1- A static route that points to the next hop IP will have what administrative distance and metric in the routing table?
administrative distance of 0 and metric of 0
administrative distance of 0 and metric of 1
*** administrative distance of 1 and metric of 0
administrative distance of 1 and metric of 1
2- What address can be used to summarize networks 172.16.1.0/24, 172.16.2.0/24, 172.16.3.0/24, and 172.16.4.0/24?
*** 172.16.0.0/21
172.16.1.0/22
172.16.0.0 255.255.255.248
172.16.0.0 255.255.252.0
3-
The routers in the diagram use the subnet assignments shown. What is the most efficient route summary that can be configured on Router3 to advertise the internal networks to the cloud?
192.1.1.0/26 and 192.1.1.64/27
192.1.1.128/25
192.1.1.0/23 and 192.1.1.64/23
192.1.1.0/24
*** 192.1.1.0/25
192.1.1.0/24 and 192.1.1.64/24
4-
Refer to the exhibit. What is the significance of the /8 in the route to the 10.0.0.0 network?
It indicates that there are 8 hops between this router and the 10.0.0.0 network.
It represents the time, in milliseconds, it takes for a ping to reply when sent to the 10.0.0.0 network.
It indicates that there are 8 subnets in the destination network to which the router can forward packets.
*** It indicates the number of consecutive bits, from the left, in the destination IP address of a packet that must match 10.0.0.0 to use that route.
5-
Refer to the exhibit. How will packets destined to the 172.16.0.0 network be forwarded?
*** Router1 will perform recursive lookup and packet will exit S0/0.
Router1 will perform recursive lookup and packet will exit S0/1.
There is no matching interface associated with network 172.16.0.0 so packets will be dropped.
There is no matching interface associated with network 172.16.0.0 so packets will take gateway of last resort and exit out S0/2.
6-A network administrator enters the following command into Router1: ip route 192.168.0.0 255.255.255.0 S0/1/0. Router1 then receives a packet that is destined for 192.168.0.22/24. After finding the recently configured static route in the routing table, what does Router1 do next to process the packet?
drops the packet because the destination host is not listed in the routing table
looks up the MAC address of the S0/1/0 interface to determine the destination MAC address of the new frame
performs a recursive lookup for the IP address of the S0/1/0 interface before forwarding the packet
*** encapsulates the packet into a frame for the WAN link and forwards the packet out the S0/1/0 interface
7-
Refer to the exhibit. Given the output in the exhibit, how would a clock rate be determined for this link?
The rate would be negotiated by both routers.
A rate would not be selected due to the DCE/DTE connection mismatch.
The rate configured on the DTE determines the clock rate.
*** The rate configured on the DCE determines the clock rate.
8-
Refer to the exhibit. Which set of commands will configure static routes that will allow the WinterPark and the Altamonte routers to deliver packets from each LAN and direct all other traffic to the Internet?
*** WinterPark(config)# ip route 0.0.0.0 0.0.0.0 192.168.146.1
Altamonte(config)# ip route 10.0.234.0 255.255.255.0 192.168.146.2
Altamonte(config)# ip route 0.0.0.0 0.0.0.0 s0/1
WinterPark(config)# ip route 0.0.0.0 0.0.0.0 192.168.146.1
Altamonte(config)# ip route 10.0.234.0 255.255.255.0 192.168.146.2
Altamonte(config)# ip route 198.18.222.0 255.255.255.255 s0/1
WinterPark(config)# ip route 172.191.67.0 255.255.255.0 192.168.146.1
WinterPark(config)# ip route 0.0.0.0 0.0.0.0 192.168.146.1
Altamonte(config)# ip route 10.0.234.0 255.255.255.0 192.168.146.2
WinterPark(config)# ip route 172.191.67.0 255.255.255.0 192.168.146.1
Altamonte(config)# ip route 10.0.234.0 255.255.255.0 192.168.146.2
Altamonte(config)# ip route 0.0.0.0 0.0.0.0 s0/0
9-Hosts on two separate subnets cannot communicate. The network administrator suspects a missing route in one of the routing tables. Which three commands can be used to help troubleshoot Layer 3 connectivity issues? (Choose three.)
*** ping
show arp
*** traceroute
*** show ip route
show interface
show cdp neighbor detail
10-
Refer to the exhibit. A company network engineer is assigned to establish connectivity between the two Ethernet networks so that hosts on the 10.1.1.0/24 subnet can contact hosts on the 10.1.2.0/24 subnet. The engineer has been told to use only static routing for these company routers. Which set of commands will establish connectivity between the two Ethernet networks?
R1(config)# ip route 10.1.2.0 255.255.255.0 192.168.0.1
R2(config)# ip route 10.1.1.0 255.255.255.0 192.168.0.2
R1(config)# ip route 10.1.2.0 255.255.255.0 192.168.0.2
R2(config)# ip route 10.1.1.0 255.255.255.0 192.168.0.1
*** R1(config)# ip route 10.1.1.0 255.255.255.0 192.168.0.2
R2(config)# ip route 10.1.2.0 255.255.255.0 192.168.0.1
R1(config)# ip route 10.1.1.0 255.255.255.0 192.168.0.1
R2(config)# ip route 10.1.2.0 255.255.255.0 192.168.0.2
R1(config)# ip route 0.0.0.0 0.0.0.0 10.1.2.1
R2(config)# ip route 0.0.0.0 0.0.0.0 10.1.1.1
11-Which of the following are displayed by the Router# show cdp neighbors command? (Choose three.)
load
*** platform
reliability
*** holdtime
*** local interface
12-
Refer to the exhibit. What two commands are required to provide connectivity between the 192.168.1.0 and 10.0.0.0 networks without requiring recursive lookup? (Choose two.)
*** A(config)# ip route 10.0.0.0 255.0.0.0 s 0/1/0
A(config)# ip route 10.0.0.0 255.0.0.0 172.16.40.2
A (config)# ip route 10.0.0.0 255.0.0.0 s 0/0/0
*** B(config)# ip route 192.168.1.0 255.255.255.0 s 0/0/0
B (config)# ip route 192.168.1.0 255.255.255.0 172.16.40.1
B(config)# ip route 192.168.1.0 255.255.255.0 s 0/1/0
13-
Refer to the exhibit. What two commands will change the next-hop address for the 10.0.0.0/8 network from 172.16.40.2 to 192.168.1.2? (Choose two.)
A(config)# no network 10.0.0.0 255.0.0.0 172.16.40.2
A(config)# no ip address 10.0.0.1 255.0.0.0 172.16.40.2
*** A(config)# no ip route 10.0.0.0 255.0.0.0 172.16.40.2
A(config)# ip route 10.0.0.0 255.0.0.0 s0/0/0
*** A(config)# ip route 10.0.0.0 255.0.0.0 192.168.1.2
14-What happens to a static route entry in a routing table when the outgoing interface is not available?
*** The route is removed from the table.
The router polls neighbors for a replacement route.
The route remains in the table because it was defined as static.
The router redirects the static route to compensate for the loss of the next hop device.
15-A router has one static route to each destination network. Which two scenarios would require an administrator to alter the static routes that are configured on that router? (Choose two.)
*** The destination network no longer exists.
The destination network is moved to a different interface on the same router.
The path between the source and destination is upgraded with a higher bandwidth link.
*** A topology change occurs where the existing next-hop address or exit interface is not accessible.
The remote destination network interface has to be down for 15 minutes of maintenance.
16-Why is it advisable to enter a next-hop IP address when creating a static route whose exit interface is an Ethernet network?
Adding the next-hop address eliminates the need for the router to do any lookups in the routing table before forwarding a packet.
*** In a multi-access network, the router cannot determine the next-hop MAC address for the Ethernet frame without a next-hop address.
Using a next-hop address in a static route provides a route with a lower metric.
In multi-access networks, using a next-hop address in a static route makes that route a candidate default route.
17-The output of the Router# show interfaces serial 0/1 command displays the following:
Serial0/1 is up, line protocol is down.
What is the most likely cause for the line protocol being down?
Serial0/1 is shutdown.
There is no cable connecting the routers.
The remote router is using serial 0/0.
*** No clock rate has been set.
18-
Refer to the exhibit. Which static route should be configured on Router1 so that host A will be able to reach host B on the 172.16.0.0 network?
ip route 192.168.0.0 172.16.0.0 255.255.0.0
ip route 172.16.0.0 255.255.0.0 192.168.0.1
ip route 172.16.0.0 255.255.0.0 S0/0/1
*** ip route 172.16.0.0 255.255.0.0 S0/0/0
19-What two devices are responsible for converting the data from the WAN service provider into a form acceptable by the router? (Choose two).
the serial port of the router
*** a modem
a switch
the ethernet port of the router
*** a CSU/DSU device
a DTE device
20-
Which of the following is true regarding CDP and the graphic shown?
CDP running on Router D will gather information about routers A, B, C, and E.
*** By default, Router A will receive CDP advertisements from routers B and C.
If routers D and E are running different routing protocols, they will not exchange CDP information.
Router E can use CDP to identify the IOS running on Router B.
21-Which two statements describe functions or characteristics of CDP? (Choose two.)
*** It starts up automatically and allows the device to detect directly connected neighbor devices that use CDP.
It operates at the network layer and allows two systems to learn about each other.
It creates a topology map of the entire network.
*** It allows systems to learn about each other even if different network layer protocols are configured.
It forwards advertisements about routes for faster convergence.
22-Which piece of information is available from examining the output of the command show ip interface brief?
Interface speed and duplex
Interface MTU
Errors
Interface MAC address
*** Interface IP address
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1. If a router cannot find a valid configuration file during the startup sequence, what will occur?
The startup sequence will reset.
***The router will prompt the user for a response to enter setup mode.
The startup sequence will halt until a valid configuration file is acquired.
The router will generate a default configuration file based on the last valid configuration.
The router will monitor local traffic to determine routing protocol configuration requirements.
2. Refer to the exhibit. The network administrator has configured the router with the interface IP addresses shown for the directly connected networks. Pings from the router to hosts on the connected networks or pings between router interfaces are not working. What is the most likely problem?
The destination networks do not exist.
The IP addresses on the router interfaces must be configured as network addresses and not host addresses.
*** The interfaces must be enabled with the no shutdown command.
Each interface must be configured with the clock rate command.
3.
Refer to the exhibit. What can be concluded from the routing table output in the exhibit? (Choose two.)
This router only has two interfaces.
The router interfaces are not operational yet.
This router is configured to forward packets to remote networks.
*** The FastEthernet0/0 and Serial0/0/0 interfaces of this router were configured with an IP address and the no shutdown command.
*** An IP packet received by this router with a destination address of 198.18.9.1 will be forwarded out of the Serial0/0/0 interface.
4.
Refer to the exhibit. The frame shown in the exhibit was received by the router. The router interfaces are operational. How will the router process this frame? (Choose two.)
The router will change the source and destination IP address in the packet before forwarding the frame.
*** The router will change the frame type to one supported by the WAN link before forwarding the frame.
The router will use the destination MAC address to determine which interface to forward the packet.
The router will look up the MAC address of the S0/0/0 interface in the ARP table and add it to the frame before forwarding.
*** The frame was received on the Fa0/0 interface of the router and will be switched to the S0/0/0 interface.
The frame was received on the S0/0/0 interface of the router and will be switched to the Fa0/0 interface.
5.Passwords can be used to restrict access to all or parts of the Cisco IOS. Select the modes and interfaces that can be protected with passwords. (Choose three.)
*** VTY interface
*** console interface
Ethernet interface
secret EXEC mode
*** privileged EXEC mode
router configuration mode
6.Which two statements correctly describe the components of a router? (Choose two.)
RAM permanently stores the configuration file used during the boot sequence.
*** ROM contains diagnostics executed on hardware modules.
NVRAM stores a backup copy of the IOS used during the boot sequence.
*** Flash memory does not lose its contents during a reboot.
ROM contains the most current and most complete version of the IOS.
Flash contains boot system commands to identify the location of the IOS
7.
Refer to the exhibit. After host 2 is connected to the switch on the LAN, host 2 is unable to communicate with host 1. What is the cause of this problem?
The subnet mask of host 2 is incorrect.
*** Host 1 and host 2 are on different networks.
The switch needs an IP address that is not configured.
The router LAN interface and host 1 are on different networks.
The IP address of host 1 is on a different network than is the LAN interface of the router.
8. Which are functions of a router? (Choose three.)
*** packet switching
extension of network segments
*** segmentation of broadcast domains
*** selection of best path based on logical addressing
election of best path based on physical addressing
9.
Refer to the exhibit. All routers have a route in its routing table to each network that is shown in the exhibit. Default routes have not been issued on these routers. What can be concluded about how packets are forwarded in this network? (Choose two.)
If RouterC receives a packet that is destined for 10.5.1.1, it will be forwarded out interface Fa0/0.
*** If RouterA receives a packet that is destined for 192.168.3.146, it will be forwarded out interface S0/0/1.
*** If RouterB receives a packet that is destined for 10.5.27.15, it will be forwarded out interface S0/0/1.
If RouterB receives a packet that is destined for 172.20.255.1, it will be forwarded out interface S0/0/0.
If RouterC receives a packet that is destined for 192.16.5.101, it will be forwarded out interface S0/0/1.
10.
The serial connection shown in the graphic needs to be configured. Which configuration commands must be made on the Sydney router to establish connectivity with the Melbourne site? (Choose three.)
*** Sydney(config-if)# ip address 201.100.53.2 255.255.255.0
*** Sydney(config-if)# no shutdown
Sydney(config-if)# ip address 201.100.53.1 255.255.255.224
*** Sydney(config-if)# clock rate 56000
Sydney(config-if)# ip host Melbourne 201.100.53.2
11.
Refer to the exhibit. What can be concluded from the output of the running-configuration of a router?
The passwords are encrypted.
The current configuration was saved to NVRAM.
The configuration that is shown will be the one used on the next reboot.
*** The commands that are displayed determine the current operation of the router.
12.
Refer to the exhibit. Host A pings host B. When R4 accepts the ping into the Ethernet interface, what two pieces of header information are included? (Choose two.)
source IP address: 192.168.10.129
source IP address: BBBB.3333.5677
destination IP address: 192.168.10.33
*** destination IP address: 192.168.10.134
*** destination MAC address: 9999.DADC.1234
13. What is the outcome of entering these commands?
R1(config)# line vty 0 4
R1(config-line)# password check123
R1(config-line)# login
ensures that a password is entered before entering user EXEC mode
*** sets the password to be used for connecting to this router via Telnet
requires check123 to be entered before the configuration can be saved
creates a local user account for logging in to a router or switch
14. Which of the following is the correct flow of routines for a router startup?
*** load bootstrap, load IOS, apply configuration
load bootstrap, apply configuration, load IOS
load IOS, load bootstrap, apply configuration, check hardware
check hardware, apply configuration, load bootstrap, load IOS
15.What three processes does a router execute when it receives a packet from one network that is destined for another network? (Choose three.)
*** decapsulates the Layer 3 packet by stripping off the Layer 2 frame header
uses the destination MAC Address in the IP Header to look up the next-hop address in the routing table
leaves the Layer 2 frame header intact when decapsulating the Layer 3 packet
*** uses the destination IP Address in the IP header to look up the next-hop address in the routing table
*** encapsulates the Layer 3 packet into the new Layer 2 frame and forwards it out the exit interface
encapsulates the Layer 3 packet into a special Layer 1 frame and forwards it to the exit interface
16.The network administrator needs to connect two routers directly via their FastEthernet ports. What cable should the network administrator use?
straight-through
rollover
*** cross-over
serial
17. Which two statements describe characteristics of load balancing? (Choose two.)
Load balancing occurs when a router sends the same packet to different destination networks. Load balancing occurs when a router sends the same packet to different destination networks.
*** Load balancing allows a router to forward packets over multiple paths to the same destination network.
*** Unequal cost load balancing is supported by EIGRP.
If multiple paths with different metrics to a destinations exist, the router cannot support load balancing.
18. What information about the router and its startup process can be gathered from the output of the show version command? (Choose three.)
*** the last restart method
the command buffer contents
the amount of NVRAM and FLASH used
*** the configuration register settings
*** the location from where the IOS loaded
19.
Which interfaces in the exhibit could be used for a leased line WAN connection? (Choose two.)
*** 1
2
3
*** 4
5
6
20. From what location can a router load the Cisco IOS during the boot process? (Choose two.)
RAM
*** TFTP server
NVRAM
setup routine
*** Flash memory
terminal
21. A network administrator has just entered new configurations into Router1. Which command should be executed to save configuration changes to NVRAM?
Router1# copy running-config flash
Router1(config)# copy running-config flash
Router1# copy running-config startup-config
*** Router1(config)# copy running-config startup-config
Router1# copy startup-config running-config
Router1(config)# copy startup-config running-config
22. What is the default sequence for loading the configuration file?
NVRAM, FLASH, ROM
FLASH, TFTP,CONSOLE
*** NVRAM, TFTP, CONSOLE
FLASH, TFTP, ROM
23. What header address information does a router change in the information it receives from an attached Ethernet interface before information is transmitted out another interface?
only the Layer 2 source address
only the Layer 2 destination address
only the Layer 3 source address
only the Layer 3 destination address
*** the Layer 2 source and destination address
the Layer 3 source and destination address
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1- Refer to the exhibit. A network administrator noticed that the VLAN configuration changes at SW2 did not propagate to SW3. On the basis of the partial output of the show vtp status command, what is the possible cause of the problem?
VTP V2 mode is disabled.
***SW3 is configured as transparent mode.
The number of existing VLANs does not match.
The configuration revision number does not match.
2-Refer to the exhibit. Which route will appear in the routing table?
R 10.10.4.0/24 [120/1] via 10.10.10.1, 00:00:12, FastEthernet0/1
R 10.10.4.0/24 [120/1] via 10.10.20.1, 00:00:12, FastEthernet0/0
R 10.10.4.0/24 [120/2] via 10.10.20.1, 00:00:12, FastEthernet0/0
***R 10.10.4.0/24 [120/3] via 10.10.30.1, 00:00:12, FastEthernet1/0
R 10.10.4.0/24 [120/1] via 10.10.30.1, 00:00:12, FastEthernet1/0
3-What will be the two wildcard masks required in an extended access list statement that blocks traffic to host 192.168.5.45 from the 172.16.240.0/27 network? (Choose two.)
***0.0.0.0
255.255.240.0
255.255.255.255
0.0.31.255
255.255.255.240
***0.0.0.31
4-Which bandwidth allocation technique minimizes bandwidth waste by reallocating unused time slices to communicating users?
VPN
NCP
TDM
STP
***STDM
5-Which two statements are true about RIPv1 and RIPv2? (Choose two.)
***Both versions broadcast updates on port 520.
Both versions send the subnet mask as part of the update.
By default, both versions will receive RIPv1 and RIPv2 updates.
***Both versions support the features of split horizon and poison reverse.
By default, both versions automatically summarize routes.
RIPv1 has a higher AD than RIPv2 has.
6-Refer to the exhibit. A network administrator must manually summarize all IP addresses on the POP router for the ISP. Which one is the correct summary address?
***192.168.0.0/22
192.168.0.0/23
192.168.0.0/24
192.168.0.0/25
7-After comparing a previous baseline to current network statistics, the network engineer has discovered a significant increase in unwarranted traffic to the extranet. Which two steps simplify administration and control the unwanted traffic? (Choose two.)
define an ACL at the distribution layer to isolate packets
***add an ACL at the router in the enterprise edge to block the traffic
deploy a Layer 3 switch to contain broadcasts
connect remote locations directly to the intranet
***configure all hosts with the same default gateway to eliminate unnecessary broadcasts
deploy one core ISP router to reduce the delay in path determination
8-What do companies gain from the services performed at the enterprise edge?
faster communication with server farms
***stronger security against malicious attacks
faster communication with Internet destinations
enhanced performance and reliability through VLANs and redundant trunk links
9-Refer to the exhibit. What two pieces of information can be gathered from the output of this command? (Choose two.)
172.16.16.0/20 is a manually summarized route.
****All subnets are being advertised because default summarization was disabled.
The output verifies that EIGRP is advertising only the networks in the same AS.
The 172.16.1.0/24 network is directly attached to the router that produced this output.
*****The Null0 interface indicates that this is not an actual path, but a summary for advertising purposes.
10-Refer to the exhibit. Assuming that the RIPv1 routing protocol is enabled and that all networks are being advertised, which statement is true?
All packets from H1 that are destined to H2 will arrive at H2.
***None of the packets from H1 that are destined to H2 will arrive at H2.
Approximately half the traffic from H1 that is destined to H2 will reach R3.
Some of the packets from H1 that are destined to H2 will be sent to the switch that is connected to network 192.168.3.64/26.
11- Which statement is accurate about the CIR in Frame Relay?
It is important to purchase a CIR that matches the highest bandwidth requirements of the enterprise.
The CIR can be no lower than the port speed of the local loop.
The CIR defines the contracted maximum rate available from the service provider on the Frame Relay circuit.
***It is possible to burst over the CIR if bandwidth is available.
12-What are two characteristics of an extended ACL? (Choose two.)
IP is used to specify TCP traffic only.
IP is used to specify TCP and UDP traffic only.
***IP is used to specify all TCP/IP protocols including TCP, UDP, ICMP and routing protocols.
Traffic can be filtered on source address only.
Traffic can be filtered on source and destination address only.
***Traffic can be filtered on source and destination address, protocol, and specific port number.
13-Refer to the exhibit. In what sequence (from first to last) does an OSPF router check the parameters listed when selecting the DR?
C, B, A, D
D, C, B, A
A, B, C, D
A, C, B, D
***B, C, A, D
14-Refer to the exhibit. What three facts represent the result of DR and BDR elections in this OSPF network? (Choose three.)
***RTC will be the DR of 10.5.0.0/30.
RTD will be the BDR of 10.5.0.0/30.
***RTD will be the DR of 10.4.0.0/28.
RTB will be the BDR of 10.7.0.0/28.
***RTB will be the DR of 10.7.0.0/28.
RTA will be the BDR of 10.4.0.0/28.
15-Which two statements describe how the information contained in a BPDU is used by a switch? (Choose two.)
to set the duplex mode of a redundant link
to activate looped paths throughout the network
****to determine the root bridge
to prevent loops by sharing routing tables between connected switches
***to determine which ports are placed in forwarding mode
16-If a modem is being used to connect to an ISP, which WAN connection type is being used?
leased line
cell switched
***circuit switched
packet switched
17-Refer to the exhibit. A network administrator enters the command ip route 10.10.4.16 255.255.255.248 s0/0/1 into the router. What will be the result of this configuration?
***A static route pointing to 10.10.4.16/29 is placed into the routing table.
A static route to 10.10.4.16/29 is placed into the routing table if interface FastEthernet0/1 goes down.
A static route pointing to 10.10.4.16/29 is only placed into the routing table if the route to 10.10.4.0 is removed.
A static route is not placed into the routing table because a RIP route that includes the destination network already exists.
18-Refer to the exhibit. What is represented by the Null0 route for the 128.107.0.0 network?
a child route that is defined
a parent route that is defined and sourced from a physical interface
****a summary route for advertising purposes, not an actual path
the result of the no auto-summary command on a router
19- What are two ways VLAN memberships can be created in an enterprise network? (Choose two.)
***manually configuring the switch ports to be part of a VLAN
allowing the user to choose a specific VLAN through a GUI menu
configuring the switch to allow VLAN membership based on NetBIOS association
implementing an access list that specifies which devices are placed into specific VLANs.
***associating MAC addresses to specific VLANs in a VLAN management policy server database
manually configuring the host devices to be part of a VLAN
20-If an authentication protocol is configured for PPP operation, when is the client or user workstation authenticated?
prior to link establishment
during the link establishment phase
***before the network layer protocol configuration begins
after the network layer protocol configuration has ended
21-Refer to the exhibit. R1 is connected to the Internet through its serial 0/0/0 interface. Hosts on the 192.168.100.0/24 LAN on R1 cannot communicate with hosts on the Internet. What two NAT configuration issues might explain this failure? (Choose two.)
***The ip nat pool command has not been applied correctly.
The inside interface has not been defined on R1.
The access list does not include the group of IP addresses that are supported by the inside network.
***The ip address that is assigned to the serial 0/0/0 interface is incorrect.
The outside interface has not been defined on R1.
22-A network administrator wants to deny responses to ping requests. Which ACL statement denies ping responses while not affecting other traffic?
access-list 123 deny tcp any any eq 80
access-list 123 deny tcp any any eq 20
access-list 123 deny tcp any any eq 21
***access-list 123 deny icmp any any echo-reply
access-list 101 deny tcp any any established
23- Refer to the exhibit. Which IP addressing scheme would be correct for the network?
H1-172.18.0.10/16
H2-172.18.0.11/16
H3-172.18.0.12/16
***H1-172.18.0.10/16
H2-172.19.0.10/16
H3-172.18.0.11/16
H1-172.18.0.10/16
H2-172.18.0.11/16
H3-172.19.0.11/16
H1-172.18.0.10/16
H2-172.19.0.11/16
H3-172.19.0.11/16
24-Refer to the exhibit. Internet access is crucial for the company network shown. Internet access is provided by two ISPs. ISP1 is the primary provider and ISP2 is the backup provider. The network administrator configures BorderR as the border router so that in normal operations, all Internet traffic goes through ISP1. However, if the link to ISP1 fails, then BorderR will automatically forward Internet traffic to ISP2. The administrator configures two default routes:
BorderR(config)# ip route 0.0.0.0 0.0.0.0 192.168.100.1 200
BorderR(config)# ip route 0.0.0.0 0.0.0.0 172.16.1.1
However, when the administrator issued the show ip route command to verify the configuration, only the second default route is in the routing table. Why is the first default route not showing?
The first configuration command overwrites the second command.
The first default route will be installed into the routing table if there is traffic with an IP address that is destined for the 192.168.100.0 network.
***This is expected because the link to ISP1 is active. If the link to ISP1 goes down, then the first default route will be installed into the routing table.
The first default route cannot be installed into the routing table unless the administrator manually disables the second default route with the no ip route 0.0.0.0 0.0.0.0 172.16.1.1 command.
25- Which command should a network administrator issue to disable default summarization in an EIGRP network?
Router(config-router)# null 0 route
Router(config-if)# no ip summary-address
Router(config-router)# no ip summary-address
Router(config-if)# no auto-summary
***Router(config-router)# no auto-summary
26- The headquarters of a corporation uses static routes to connect to three branch offices. What are two advantages of using static routes for the WAN connections? (Choose two.)
****Static routes are more secure.
Static routes converge faster.
Static routes have higher administrative distances than dynamic routing protocols.
The metrics of a static route need adjusting only if the bandwidth of the WAN connection changes.
***They are more stable and less susceptible to network changes in the interior gateway protocol.
27-What two statements are true regarding EIGRP tables? (Choose two.)
***A feasible successor route can be found in the topology table.
A successor route can only be found in the routing table.
***The topology table shows whether a route is in the passive or active state.
The routing table shows the amount of time elapsed since a router adjacency was formed.
The neighbor table shows all adjacent Cisco devices.
Administrative distance is shown as a column in the neighbor table.
28-Refer to the exhibit. A company has recently installed a new switch (S2) into their network. After several minutes, the network administrator notices that the new VLAN information is not being propagated to the new switch. Given the show vtp status command output, what is the possible problem that prevents the information from being received by the new switch?
***VTP version mismatch
VTP domain name mismatch
VTP revision number mismatch
time synchronization problems
29- Refer to the exhibit. An administrator is adding a new router to the network. The IP address 192.168.13.6/30 has been assigned to the connecting serial interface on R2. What IP address must the administrator assign to the serial interface of the new router?
192.168.13.4/30
***192.168.13.5/30
192.168.13.7/30
192.168.13.58/30
192.168.13.61/27
192.168.13.63/27
30-Refer to the exhibit. A network support technician has been asked to set an IP address on one of the FastEthernet interfaces on a new router. What is causing the interface to reject the address?
The IP address is already in use.
****The technician is using a network address.
The technician is using the wrong subnet mask for /26.
The technician must enable VLSM on the interface.
31- Why would a network administrator want to limit the size of failure domains when designing a network?
to eliminate the effects of Ethernet collisions
***to reduce the impact of a key device or service failure
to reduce the impact of Internet congestion on critical traffic
to eliminate the need to block broadcast packets at the edge of the local network
32-Refer to the exhibit. RIPv2 is configured in the network shown. Hosts in the network have access to all internal networks but do not have Internet access. On which router should the commands, shown in the exhibit, be added to provide Internet access for all hosts in the network?
R1
***R2
R3
ISP
33-Refer to the exhibit. If R4 is announcing all shown internal networks as a summary address to the ISP, which summary address will be most specific?
192.168.1.0/22
192.168.4.0/21
192.168.6.0/23
****192.168.8.0/21
192.168.4.0/22
34-When MD5 authentication is used for OSPF routing protocol authentication, what two facts are known about the key? (Choose two.)
The key passes between routers in plain text.
The key is used to help generate an encrypted number for authentication.
The key passes between routers in encrypted form.
***The key is never transmitted.
The key can be captured by using a packet sniffer.
35- What are two benefits of implementing VLANs in an enterprise network? (Choose two.)
eliminates the need for a Layer 3 device
***provides segmentation of broadcast domains
allows for the propagation of broadcasts from one local network to another
***allows for the logical grouping of devices despite physical location
prevents issues such as broadcast storms by ensuring a loop free environment
36- Refer to the exhibit. Because of continuing instability of one of the serial links in the OSPF network, a network administrator configures router ASBR as shown. Which two statements will be a result of this configuration? (Choose two.)
Traffic intended for destinations across unstable serial links will be forwarded by ASBR even when the links are down.
***A summary route of 192.168.0.0/22 will be advertised to the ISP router.
Serial links in range 192.168.0.0 255.255.252.0 will be forced into a passive state.
Networks connected to the unstable serial links will be placed in an unreachable state.
***Negative effects of route flapping will be reduced.
37-Refer to the exhibit. OSPF is enabled and the network has completely converged. Which two routers will be designated as DROTHER routers? (Choose two.)
***R1
***R2
R3
R4
38-Refer to the exhibit. Users on the 172.30.20.0/24 network are unable to access any of the servers located on the 192.168.0.0/23 network. Given the network topology and OSPF configuration, what two problems exist in this network? (Choose two.)
There is a routing loop occurring between all three routers.
***There is a network statement missing.
***Network 172.30.20.0 has an incorrect wildcard mask.
The OSPF Area configuration is incorrect.
/23 is an invalid subnet mask for the 192.168.0.0 network.
39-Which two statements are true about the native VLAN on a switch? (Choose two.)
It requires a special VLAN ID tag.
It is unable to be changed to a different VLAN.
Untagged traffic slows the switching process down.
***The native VLAN defaults to VLAN 1 on Cisco Catalyst switches.
***Untagged frames that are received on a trunk become members of this VLAN.
40- In which VTP mode can a switch create VLANs, ignore VTP messages, and not pass local VLAN information to other VTP domain members?
client
***server
pruning
transparent
41-Assuming VLSM is not being used, what impact will adding the command ip route 172.16.64.0 255.255.240.0 serial0/0 have on a router that is already operational in a network?
All packets with a destination address between 172.16.64.1 and 172.16.80.254 will be forwarded out serial0/0.
All packets with a destination address between 172.16.64.1 and 172.16.255.254 will be forwarded out serial0/0.
***All packets with a destination address between 172.16.64.1 and 172.16.79.254 will be forwarded out serial0/0.
All packets with a destination address between 172.16.0.1 and 172.16.64.254 will be forwarded out serial0/0.
42-What is the term for the value 2172416 that is highlighted in the output of the show ip eigrp topology command?
feasible distance of the successor
reported distance of the successor
feasible distance of the feasible successor
***reported distance of the feasible successor
43-Refer to the exhibit. R1 and R2 are connected via serial interfaces. Both interfaces show that there is Layer 2 connectivity between them. The administrator verifies that CDP is operational; however, pings between the two interfaces are unsuccessful. What is the cause of this connectivity problem?
no set loopback
***incorrect subnet mask on R2
incompatible bandwidth
incorrect IP address on R1
incompatible encapsulation
44- Which two statements are true regarding a PPP connection between two Cisco routers? (Choose two.)
***LCP tests the quality of the link.
***LCP manages compression on the link.
Only a single NCP is allowed between the two routers.
NCP terminates the link when data exchange is complete.
With CHAP authentication, the routers exchange plain text passwords.
45-Refer to the exhibit. All routes in the exhibit are available to a router. Which two routes will be placed into the routing table? (Choose two.)
A
***B
***C
D
E
F
46- Which two criteria are used by STP to select a root bridge? (Choose two.)
memory size
***bridge priority
number of ports
switch location
switching speed
***base MAC address
47- Refer to the exhibit. What two conclusions can be drawn from the displayed output? (Choose two.)
A packet with a destination IP address of 172.20.1.14 will exit the router via the Serial 0/1/0 interface.
The default administrative distance for EIGRP has been changed.
***Network 172.20.1.4 can be reached through two possible routes of equal cost.
***The addresses on this network were created using VLSM.
The router connected to Serial 0/1/1 is advertising four separate routes through EIGRP to this router.
48- Refer to the exhibit. The network is using OSPF as the routing protocol. A network administrator issues the show ip ospf neighbor command to check the status of operation. Which statement is true?
RB has the lowest priority value.
RC and RD have the lowest router IDs on the network.
***RA has established adjacencies with all neighbor routers.
RA and RB can not form an adjacency because they are stuck in the 2-way state.
49- Refer to the exhibit. If router RTA fails, which statement is true?
***Hosts A and B can reach each other, but cannot reach hosts C and D or the server.
No host can reach any other host.
Hosts A, B, C, and D can reach each other, but cannot reach the server.
All hosts can reach each other.
50- Refer to the exhibit. Assuming that all three routers are configured with the EIGRP routing protocol and sharing information, what information can be gathered from the show command output?
Router B has EIGRP adjacencies with both router A and C.
Router B has a fully converged topology table.
Router B has not formed an adjacency with router A.
***Router B has not formed an adjacency with router C.
51- A sales representative is preparing to send sensitive information to corporate headquarters from a hotel room using the Internet. Prior to the trip, the IT staff made the necessary provisions to allow secure Internet access. What solution was implemented for the sales representative?
***VPN
Frame Relay
PPP with CHAP authentication
PPP with PAP authentication
52- Refer to the exhibit. A network administrator wishes to deny Internet access to all R2 LAN hosts, while allowing these hosts to reach all other devices on the company networks. Where should the ACL shown in the exhibit be placed to meet these requirements?
R2: Fa0/0 inbound
***R1: S0/1/0 outbound
R1: S0/0/1 inbound
R2: S0/0/1 outbound
R2: Fa0/0 outbound
53- Which three statements are true about RSTP? (Choose three.)
RSTP can fall back to STP to provide support for legacy equipment.
***RSTP and STP have the same number of port states.
Like PortFast and UplinkFast, RSTP is a proprietary protocol.
RSTP takes up to 50 seconds to converge.
***RSTP requires a point-to-point, full-duplex connection.
***RSTP views all ports that are not discarding as part of an active topology.
54-A company is using a Class B IP addressing scheme and expects to need as many as 150 networks. What is the correct subnet mask to use with the network configuration?
255.255.0.0
255.255.240.0
255.255.254.0
***255.255.255.0
255.255.255.128
255.255.255.192
55
A sales representative is using a wireless connection to make a VoIP call. Which protocol will be used to transport the voice packets?
TCP
***UDP
PPP
HDLC
56-Refer to the exhibit. What is the purpose of the command: RouterA(config)# access-list 1 permit 192.168.16.0 0.0.0.255?
It identifies traffic on all inside interfaces to be translated and given access to the ISP router.
It identifies traffic from the fa0/1 interface to be translated and given access to the ISP router.
It allows traffic from the ISP to reach all of the inside interfaces.
***It identifies traffic from the fa0/0 interface to be translated and given access to the ISP router.
It allows traffic from the ISP router to the fa0/1 interface.
57-Refer to the exhibit. Server7 has been added to the server farm network. The hosts can ping Servers 2 and 3 and Server2 and Server3 can ping each other. Server7 cannot ping the other servers connected to the switch. What is the cause of this problem?
The Fa0/1 port on the switch should be in access mode.
The switch IP address is not on the same subnet as Server7.
***The switch port used for Server7 is not in the same VLAN as Server2 and Server3.
The Fa0/0 interface of the router has not been configured for subinterfaces to support inter-VLAN routing.
58-Which three IP addresses are valid host addresses in the 10.200.0.0/20 network? (Choose three.)
***10.200.11.69
10.200.16.1
***10.200.0.255
10.201.0.55
***10.200.15.240
10.200.30.29
1.Which two statements describe the function of time-division multiplexing? (Choose two.)
Multiple data streams share one common channel.
Conversations that require extra bandwidth receive any unused time slices. ******
Time slots are utilized on a first-come, first-served basis. *****
Packets that are sent during transmission are reconstructed at the receiving end.
Priority can be dedicated to one data source.
2-At which two layers of the OSI model does a WAN operate? (Choose two.)
Layer 1 ****
Layer 2 ****
Layer 3
Layer 4
Layer 6
Layer 7
3-Which three statements describe functions of the Point-to-Point Protocol with regards to the OSI model? (Choose three.)
operates at all layers of the OSI model
provides a mechanism to multiplex several network layer protocols ****
can be configured on both synchronous and asynchronous serial interfaces *****
uses Layer 3 of the OSI model to establish and maintain a session between devices
uses the data link layer to configure such options as error detection and compression *****
uses network control protocols to test and maintain connectivity between devices
4-When customers use credit cards to make purchases at a small business, a modem is heard dialing a telephone number to transfer the transaction data to the central office. What type of WAN serial connection is in use?
leased line
point-to-point
circuit switched *****
packet switched
5-Permanent virtual circuits and switched virtual circuits are both part of which option for WAN connectivity?
leased line
cell switching
packet switching
circuit switching ****
6-Which two options can LCP negotiate? (Choose two.)
link quality ****
authentication *****
dynamic flow control
compression and network layer address for IP
connection-oriented or connectionless communication methods
7-Why are Network Control Protocols used in PPP?
to establish and terminate data links
to provide authentication capabilities to PPP
to manage network congestion and to allow quality testing of the link
to allow multiple Layer 3 protocols to operate over the same physical link *****
8-Refer to the exhibit. What statement is true about the debug output?
R2 is using PAP instead of CHAP.
The routers have different CHAP passwords configured. *****
The administrator performed a shutdown on the R2 PPP interface during negotiation.
The Layer 3 protocol negotiation caused the connection failure.
9-Which best describes data communications equipment (DCE)?
serves as data source and/or destination
responsible for negotiating windowing and acknowledgements
physical devices such as protocol translators and multiplexers
equipment that forwards data and is responsible for the clocking signal ****
10-What statement best describes cell switching?
dedicated path created between endpoints
permanent physical link between two points
virtual circuits established in network of ISPs
fixed-length packets that traverse virtual circuits ****
11-What is the data transmission rate for the DS0 standard?
56 kbps
64 kbps ****
1.544 Mbps
44.736 Mbps
12-What best describes the use of a data-link connection identifier (DLCI)?
an address identifying a virtual circuit *****
a logical address identifying the DCE device
an address identifying a Layer 3 service across a Frame Relay network
a logical address identifying the physical interface between a router and a Frame Relay switch
13-At what physical location does the responsibilty for a WAN connection change from the user to the service provider?
demilitarized zone (DMZ)
demarcation point *****
local loop
cloud
14-Which three statements are true regarding LCP? (Choose three.)
It is responsible for negotiating link establishment.
It negotiates options for Layer 3 protocols running over PPP. ****
It uses MD5 encryption while negotiating link-establishment parameters. ****
It terminates the link upon user request or the expiration of an inactivity timer.
It can test the link to determine if link quality is sufficient to bring up the link. ****
It monitors the link for congestion and dynamically adjusts the acceptable window size.
15-Refer to the exhibit. What statement is true regarding the output shown?
LCP is in the process of negotiating a link.
LCP and NCP are waiting for CHAP authentication to complete.
LCP negotiation has completed successfully, but NCP negotiation is in progress. *****
LCP and NCP negotiation is complete, and the data link service is available to carry packets.
16-Refer to the exhibit. The command output is from two routers that are connected by a point-to-point T1 link. Based on the information shown, what is the likely problem if the routers are unable to communicate using TCP/IP?
A loopback has not been set on either router.
The routers have mismatched serial line encapsulation. *****
Carrier delay has not been configured on router Cisco_2801.
The IP addresses are not in the same subnet.
17-Why are Frame Relay paths referred to as virtual?
Frame Relay PVCs are created and discarded on demand.
The connections between PVC endpoints act like dialup circuits.
There are no dedicated circuits to and from the Frame Relay carrier.
The physical circuits inside the Frame Relay cloud do not contain exclusive links for a specific Frame Relay connection. ****
18-What does a Frame Relay switch use to inform the sender that there is congestion?
FECN ****
BECN
DE
FCS
19-Which statement is true concerning the Cisco implementation of the HDLC protocol?
supports authentication
universally compatible frame format
default encapsulation for serial interfaces on Cisco routers *****
does not support multiple protocols across a single link
20-What two services allow the router to dynamically map data link layer addresses to network layer addresses in a Frame Relay network? (Choose two.)
ARP
ICMP
Proxy ARP
Inverse ARP ****
LMI status messages****
1-Refer to the exhibit. Based on the output shown, to which IP network should the workstations in the Support department belong?
192.168.1.0
172.16.1.0
***172.16.3.0
172.16.5.0
2-Refer to the exhibit. A network administrator is doing proactive network maintenance. The administrator pings 192.168.1.100 and compares the results to the baseline data. Based on the comparison of the two pings, what is one possibility?
There is an ACL applied, making the destination host unreachable.
There is a malfunctioning NIC on the destination host.
The sending host is unable to access the network.
***There are congestion problems on the network.
3-Refer to the exhibit. Given the output generated by the debug ppp negotiation command, which statement is true?
***The line protocol of the local router is now up.
The username ’Goleta’ is configured locally.
The command ppp authentication pap is configured on both routers.
The local router requested to terminate the session.
4-What is important to consider while configuring the subinterfaces of a router when implementing inter-VLAN routing?
The subinterface numbers must match the VLAN ID number.
The physical interface must have an IP address configured.
***The IP address of each subinterface must be the default gateway address for each VLAN subnet.
The no shutdown command must be given on each subinterface.
5-Refer to the exhibit. A lab technician connects two routers together via a serial cable using the default interface configuration values. The interfaces are up; however, the technician is unable to ping between the two devices. What is the most likely problem?
The lab technician used the wrong cable to connect the serial ports.
There is an IP mismatch between the serial ports.
There is an encapsulation mismatch between the serial ports.
***No clock rate has been set on the DCE interface.
6-Refer to the exhibit. Based on the output shown, why is VTP information unable to propagate the network?
One of the two client mode switches must be reconfigured to Transparent mode.
Each switch must be synchronized to the network time server.
***The VTP domain names are different.
VTP passwords must be set.
The configuration revision numbers are all the same.
7-The enterprise mail server software recently went through a minor update. A network administrator notices an excessive amount of traffic between a database server and the newly updated mail server, compared to the baseline data. What is the first action the administrator should do to investigate the problem?
Wait to see if the recent update will stabilize after a while.
Redo the baseline data to include the minor upgrade.
***Check the log to see what software components are producing the excess traffic.
Check for viruses and spyware on the database server.
8-Refer to the exhibit. Users are reporting that they cannot access the Internet. Routers R1 and R2 are configured with RIP version 2 as shown. If R2 receives a packet with a destination address on the Internet, how is the packet routed?
The packet is routed to the ISP router and then to network 10.1.1.0/24.
The packet is routed to the ISP router and then to the Internet.
***The packet is routed to R1 and then forwarded out Fa0/0 on R1.
The packet will not be routed because R2 does not have a valid default route.
9-Refer to the exhibit. Both routers are configured using RIPv1. Both routers are sending updates about the directly connected routes. R1 can successfully ping the serial interface of R2. The routing table on R1 does not contain any dynamically learned routes from R2, and the routing table on R2 shows no dynamically learned routes from R1. What is the problem?
Subnetting is not supported by RIPv1.
One of the routers needs a clock rate on the serial interface.
The serial link between the two routers is unstable.
***VLSM is not supported by RIPv1.
10-Refer to the exhibit. Host 192.168.1.14 is unable to download email from 192.168.2.200. After reviewing the output of the show running-config command, what problem is discovered?
Access to the SMTP server is denied.
***The destination host address in an ACL statement is incorrect.
The ACL is applied to the interface in the wrong direction.
The implicit deny any any is blocking all access to email.
11- An employee called the help desk to report a laptop that could not access a web-based application on the Internet. The help desk technician asked the employee to open a Windows command prompt and type the ipconfig /all command. Which problem-solving technique did the technician choose?
top-down
bottom-up
substitution
***divide-and-conquer
12-Refer to the exhibit. Based on the network diagram and the output shown, which statement is true?
***The command was entered on router R1.
The command was entered on router R2.
The command was entered on router R3.
The command could have been entered on either R1 or R2.
13-Refer to the exhibit. An ACL is configured to prevent access by network 192.168.1.0 to network 192.168.2.0, but it is not working properly. What problem is discovered after observing the output of the show running-config command?
The protocol type specified in the ACL should be TCP, not IP.
The source and destination addresses are reversed in the statement.
***The ACL is applied to the wrong interface, but the right direction.
The ACL is applied to the wrong interface and the wrong direction.
The permit ip any any statement allows network 192.168.1.0 access.
14-Although all networks are reachable, the network administrator notices abnormal routing behavior after configuring OSPF on each router. According to the partial output from the debug ip ospf events command, which statement is true about the contents of the routing table in RA?
***It will show network 172.16.3.0 learned from RB.
It will show network 172.16.3.0 learned from RC.
It will show two equal routes to network 192.168.1.4/30.
It will show two equal routes to network 192.168.1.8/30.
15-A network at a large building failed, causing a severe disruption in business activities. The problem was eventually detected and resolved by replacing a piece of failed network equipment. Investigation led to the conclusion that a network design problem was the main cause of the disruption. Loss of a single piece of equipment should not have been able to cause such a large problem. What two terms best describe this type of design weakness? (Choose two.)
bottleneck
limited availability
limited scalability
****large failure domain
***single point of failure
limited staff capabilities
16-Refer to the exhibit. The network administrator is troubleshooting the connectivity issue between RA and RB. According to the partial configuration, what is the cause of the problem?
***password mismatch for PPP authentication
username mismatch for PPP authentication
encapsulation method mismatch for PPP authentication
authentication method mismatch for PPP authentication
17-Refer to the exhibit. ABC Company is using the 172.16.0.0/18 network. It is standard company practice to use the first 50 addresses for switches and servers and assign the last usable address to the router. The remaining addresses are assigned to the hosts. After assigning the addresses, the network technician tests connectivity from the host above and is not able to ping the router. What could be the problem?
The router was assigned the broadcast address.
The host is not in the same subnet as the switch and router.
***The router interface is in the wrong subnet.
The host was assigned a network address.
18-Refer to the exhibit. A network administrator is troubleshooting a problem. No users are able to access the 10.10.2.0/24 network, but are able to access all other networks. Assuming R3 is configured correctly and based on the output shown, what is most likely the problem?
There is congestion on the 10.10.2.0 network.
***The EIGRP process number on R2 is incorrect.
The Fa0/0 interface on R2 is shut down.
The Fa0/0 interface on R2 has an incorrect IP address or subnet mask.
19-Refer to the exhibit. The network administrator correctly configures RTA to perform inter-VLAN routing. Using the show vlan command, the administrator verifies that port Fast Ethernet 0/4 is the first available port in the default VLAN on SW2. The administrator connects RTA to port 0/4 on SW2, but inter-VLAN routing does not work. What could be the possible cause of the problem with the SW2 configuration?
Port 0/4 is not active.
Port 0/4 must be a member of VLAN1.
***Port 0/4 is configured in access mode.
Port 0/4 is configured as a trunk port.
20-Refer to the exhibit. The network administrator is unable to ping from the console of router R3 to host 10.10.4.63. What is the problem?
RIPv1 does not support VLSM.
Router R2 does not have RIP correctly configured.
Router R3 is missing a network statement for network 10.0.0.0.
***There is an addressing problem on the link between routers R2 and R3.
21-
Refer to the exhibit. A network administrator has implemented subnetting using the network 192.168.25.0 and a /28 mask. Workstation 1 is not able to ping with Workstation 2. What is a possible cause for this lack of communication?
Workstation 1 and Workstation 2 are on the same subnet.
The serial connections are using addresses from the LAN subnets.
All hosts in the network must be in the same subnet to communicate.
***Workstation 1 is not on the same network that the RTA router LAN interface is on.
22-Which two statements describe when a network administrator should perform a network baseline? (Choose two.)
It should be done monthly as a minimum standard.
***It should be performed when all switch Cisco IOS versions are upgraded.
It should be done when all network printers are upgraded to a new model.
***It should be done when the network is performing at normal activity levels.
It should be done whenever an SLA has been signed with a new service provider.