1.
You work on a router with the following configuration: Int S0 IP address 192.168.37.2/24, int E0 IP address 10.1.1.1/24 and int E1 IP address 10.2.2.1/24. You only want to advertise EIGRP AS 100 on S0 and E0 NOT E1. Which command can be used to achieve this?
Correct Answer
B. Router eigrp 100 Network 192.168.37.0 Network 10.1.1.0 255.255.255.0
Explanation
The correct answer is "Router eigrp 100 Network 192.168.37.0 Network 10.1.1.0 255.255.255.0". This command is used to configure EIGRP with AS 100 and advertise the networks 192.168.37.0/24 and 10.1.1.0/24. By specifying the subnet mask 255.255.255.0 for the network 10.1.1.0, only the E0 interface with the IP address 10.1.1.1/24 will be included in the EIGRP updates, while the E1 interface will be excluded.
2.
What
command could be used to check the BGP routing table?
Correct Answer
B. Show ip bgp
Explanation
The correct answer is "Show ip bgp." This command is used to check the BGP routing table. BGP (Border Gateway Protocol) is a routing protocol used to exchange routing information between different autonomous systems on the internet. By using the "Show ip bgp" command, network administrators can view the BGP routing table, which contains information about the available routes and their attributes. This command provides detailed information about BGP routes, including the network prefix, next hop, metric, and other attributes.
3.
What
command would you use to clear a routing table?
Correct Answer
C. Clear ip route *
Explanation
The correct answer is "Clear ip route *". This command is used to clear the entire routing table in Cisco IOS devices. By using the "clear ip route *" command, all the routes in the routing table will be removed, allowing for a fresh start in the routing process.
4.
What
command if any would be used to update the bgp table if changes to the bgp policy
has been made?
Correct Answer
B. Clear ip bgp *
Explanation
To update the BGP table after making changes to the BGP policy, the command "clear ip bgp *" would be used. This command clears all the BGP sessions and forces the router to reestablish the BGP connections, causing the BGP table to be updated with the new policy changes.
5.
If
a router has the following configuration: int S0 10.1.1.1/24, int S1
10.1.2.1/24 and int S2 192.168.37.10/24
and you only want to enable ospf on int S0 in area 0. What command would you
use?
Correct Answer
E. None of the above
Explanation
The correct command to enable OSPF on interface S0 in area 0 would be "network 10.1.1.0 0.0.0.255 area 0". This command matches the network address and wildcard mask of the S0 interface, specifying that this network should be included in OSPF area 0. None of the given options match this command, so the correct answer is "None of the above".
6.
What
command can you use to see whether and what access-list is bound to an
interface as in or outbound?
Correct Answer
B. Show ip interface S0
Explanation
The correct answer is "Show ip interface S0". This command is used to display information about the specified interface, including any access-lists that are bound to it. By using this command, you can determine whether there is an access-list applied to the interface and view the details of the access-list if it is present.
7.
What
command can you use to check for authentication in OSPF areas?
Correct Answer
A. Show ip ospf
Explanation
The command "Show ip ospf" can be used to check for authentication in OSPF areas. This command displays information about OSPF routing processes, including authentication settings. By using this command, network administrators can verify if authentication is enabled and configured correctly in OSPF areas.
8.
What
command can you use to verify peering in BGP?
Correct Answer
D. Show ip bgp summary
Explanation
The command "Show ip bgp summary" can be used to verify peering in BGP. This command provides a summary of the BGP routing table, including information about the BGP neighbors and their status. It allows you to see if the BGP peering sessions are established and if there are any issues with the neighbors. By using this command, you can quickly check the status of BGP peering and ensure that the routing information is being exchanged properly.
9.
What
command could you use to summarize all the networks from 10.1.0.0 /24 to
10.1.3.0/24 in eigrp?
Correct Answer
D. (config-if)# ip summary-address eigrp 100 10.1.0.0 255.255.252.0
Explanation
The correct answer is (config-if)# ip summary-address eigrp 100 10.1.0.0 255.255.252.0. This command is used to summarize the networks from 10.1.0.0/24 to 10.1.3.0/24 in EIGRP. The subnet mask 255.255.252.0 is used to include all the networks within the range. The "config-if" indicates that this command should be entered in interface configuration mode.
10.
What
command could you use to summarize all the networks from 10.1.0.0 /24 to
10.1.3.0/24 in ospf in area 0?
Correct Answer
C. Area 0 range 10.1.0.0 255.255.252.0
Explanation
The correct answer is "Area 0 range 10.1.0.0 255.255.252.0". This command is used to summarize all the networks from 10.1.0.0/24 to 10.1.3.0/24 in OSPF area 0. By specifying the range as 10.1.0.0 and the subnet mask as 255.255.252.0, it includes all the subnets within the specified range. This helps in reducing the routing table size and improving network efficiency.
11.
Show
ip ospf border-routers:
Correct Answer
D. Displays information about ABRs and ASBRs
Explanation
The command "ip ospf border-routers" is used to display information about ABRs (Area Border Routers) and ASBRs (Autonomous System Boundary Routers). ABRs are routers that connect different OSPF areas, while ASBRs are routers that connect OSPF to external networks. Therefore, this command provides information about both types of routers.
12.
Which
command can be used to view the level-1 and level-2 topology table in IS-IS?
Correct Answer
C. Show is-is topology
Explanation
The correct answer is "Show is-is topology". This command is used to view the level-1 and level-2 topology table in IS-IS. It provides information about the network topology, including the routers, links, and their respective metrics. By using this command, network administrators can gain insights into the IS-IS routing protocol and make informed decisions about network optimization and troubleshooting.
13.
How
do you enable IS-IS on a router?
Correct Answer
A. Router isis
Explanation
To enable IS-IS on a router, the correct command is "Router isis". This command allows the router to participate in the IS-IS routing protocol. The other options mentioned, "Router is-is", "Router ip isis", and "Router ip is-is" are incorrect and do not activate IS-IS on the router.
14.
What
command can be used to check information about clns in IS-IS?
Correct Answer
A. Show clns route
Explanation
The "Show clns route" command can be used to check information about clns in IS-IS. This command displays the routing table for clns, showing the routes and their associated metrics. It provides information about the clns routes in the IS-IS network, allowing network administrators to troubleshoot and analyze the clns routing information.
15.
What
command would you use to check IS-IS level 1 routing table?
Correct Answer
D. Show isis route
Explanation
The correct answer is "show isis route." This command is used to check the IS-IS level 1 routing table. IS-IS (Intermediate System to Intermediate System) is a routing protocol used in computer networks. By using this command, network administrators can view the routing information specific to IS-IS level 1.
16.
What
command could be used to stop rip from sending updates to an interface?
Correct Answer
C. (config-router)# Passive interface s 0
Explanation
The correct answer is (config-router)# Passive interface s 0. This command is used in the router configuration mode to stop the Routing Information Protocol (RIP) from sending updates to the specified interface. By making the interface passive, RIP will not send any updates through it, effectively stopping RIP updates on that interface.
17.
You
want to change the rid on a ospf configured router, what is the best way to
make sure that the new rid
will be used?
Correct Answer
B. #Clear ip ospf process
Explanation
The best way to ensure that the new RID will be used is by clearing the OSPF process on the router. This can be done by using the command "clear ip ospf process". This command will reset the OSPF process on the router, causing it to reevaluate the RID and use the new one.
18.
You
want to set a manual rid of 10.1.1.1
in ospf, what command will best achieve this?
Correct Answer
A. Router-id 10.1.1.1
Explanation
The correct answer is "router-id 10.1.1.1" because this command is used in OSPF to manually set the router ID. The router ID is a unique identifier for the router within the OSPF domain. By using this command, the router will use the specified IP address as its router ID.
19.
What
command can be used to make sure a ospf router does not take over the DR or BDR
role in a broadcast
medium?
Correct Answer
B. (config-if)# ip ospf priority 0
Explanation
Setting the OSPF priority to 0 using the "ip ospf priority 0" command on the interface configuration level ensures that the OSPF router will not take over the DR (Designated Router) or BDR (Backup Designated Router) role in a broadcast medium. The OSPF priority value determines the likelihood of a router becoming the DR or BDR, with a higher value indicating a higher priority. By setting the priority to 0, the router effectively removes itself from contention for these roles.
20.
What
command can be used to set int s 0/0 to its default?
Correct Answer
A. (config)# default interface s0
Explanation
The correct answer is (config)# default interface s0. This command is used to reset the configuration of interface s0 to its default settings. It allows the user to undo any changes made to the interface and revert it back to its original state.
21.
Wat
is the command used to create a p2p interface in frame relay?
Correct Answer
B. Interface s 0/0.1 point-to-point
Explanation
The correct answer is "interface s 0/0.1 point-to-point". This command is used to create a point-to-point interface in frame relay. The "point-to-point" keyword specifies that the interface is a point-to-point connection, which means that it is a direct connection between two devices.
22.
What
command would typically be used to check the LSDB in ospf?
Correct Answer
C. Show ip ospf database
Explanation
The correct answer is "Show ip ospf database". This command is typically used to check the Link State Database (LSDB) in OSPF. The LSDB contains information about the network topology and is used by OSPF routers to determine the best path for routing. By using the "Show ip ospf database" command, network administrators can view the contents of the LSDB and gather information about the OSPF network.
23.
What
command would typically be used to check the lsdb for type 5 LSAs?
Correct Answer
C. Show ip ospf database external
Explanation
The correct answer is "Show ip ospf database external". This command is typically used to check the link state database (lsdb) for type 5 LSAs in OSPF. The "show" command is commonly used in network devices to display information, and in this case, "show ip ospf database external" specifically displays the OSPF database entries for external LSAs. This command allows network administrators to view the information about external routes learned by OSPF.
24.
What
command can be used to stop the flow of LSAs type 3,4 and 5 through an ABR?
Correct Answer
A. Area 1 stub no-summary
Explanation
The correct answer is "Area 1 stub no-summary". This command can be used on an ABR (Area Border Router) to stop the flow of LSAs (Link State Advertisements) of type 3, 4, and 5 through the specified area. By configuring this command, the ABR will not advertise external routes (type 5 LSAs) or summary routes (type 3 and 4 LSAs) into the stub area. This helps in reducing the size of the routing table and preventing unnecessary traffic in the stub area.
25.
What
command can be used to check the routing table?
Correct Answer
C. Show ip route
Explanation
The correct answer is "Show ip route." This command can be used to check the routing table. It displays the routing table information, including the network destinations and their corresponding next hop addresses. By using this command, network administrators can verify the current routing configuration and troubleshoot any routing issues.
26.
What
command can be used to check whether a virtual link is operational?
Correct Answer
C. Show ip ospf virtual-links
Explanation
The command "Show ip ospf virtual-links" can be used to check whether a virtual link is operational. This command specifically displays information about the OSPF virtual links configured on a router. By using this command, network administrators can verify the status and operational state of the virtual links in the OSPF network.
27.
What
command should be used to set an interface in level 2 only with ISIS?
Correct Answer
D. (config-if)# isis circuit level-2 only
Explanation
The correct answer is "(config-if)# isis circuit level-2 only". This command is used to set an interface in level 2 only with ISIS. It specifies that the interface should only participate in level 2 routing with ISIS, and not in level 1 routing.
28.
What
command could be used to summarize an address in level 2 only?
Correct Answer
C. Summary-address 10.3.2.0 255.255.254.0 level-2
Explanation
The command "summary-address 10.3.2.0 255.255.254.0 level-2" could be used to summarize an address in level 2 only. This command specifies the network address and subnet mask to be summarized, and the "level-2" parameter indicates that the summarization should be performed at level 2 only.
29.
What
command can be used to set a router to only participate int level 1 isis
routing?
Correct Answer
B. (config-router)# is-type level-1
Explanation
The command "is-type level-1" is used to set a router to only participate in level 1 ISIS routing.
30.
What
command can be used to switch of auto summary on Rip1
Correct Answer
D. None of the above
Explanation
None of the given commands can be used to switch off auto summary on Rip1. The correct command to disable auto summary on Rip1 is "no auto-summary" which is not listed as an option.
31.
What
command can be used to switch of auto summary on Rip2?
Correct Answer
C. (config-router)# no auto-summary
Explanation
The correct answer is "(config-router)# no auto-summary". This is the correct command to switch off auto summary on Rip2. By entering this command in the router configuration mode, the auto summary feature will be disabled for the Rip2 routing protocol.
32.
You
have a router with ospf and rip configured and you want to redistribute Rip
into ospf. What is the most
correct command to achieve this?
Correct Answer
D. Router ospf 10
Redistribute rip subnets
Explanation
The most correct command to redistribute Rip into ospf is "Router ospf 10 Redistribute rip subnets". This command specifies that the OSPF process with ID 10 should redistribute RIP routes into OSPF, including all subnets.
33.
You
want to redistribute RIP into EIGRP 100 with all subnets. What command can be
used to achieve this?
Correct Answer
A. Redistribute rip metric 10
Explanation
The command "Redistribute rip metric 10" can be used to redistribute RIP into EIGRP 100 with all subnets. This command specifies the redistribution of RIP routes into EIGRP 100 and sets the metric of the redistributed routes to 10.
34.
What
command should be used to bind a route-map to a router?
Correct Answer
C. Ip local policy route-map pbr
Explanation
The correct answer is "Ip local policy route-map pbr." This command should be used to bind a route-map to a router. The "ip local policy route-map pbr" command is used to apply a route-map to the router's local policy routing. It allows the router to make routing decisions based on the defined route-map criteria.
35.
You
want traffic originating from E0 on Ra to use S0 as its next hop with a route
map called PBR. What command
can you use to achieve this?
Correct Answer
C. Int E0
ip policy route-map PBR
Explanation
The correct answer is "Int E0 ip policy route-map PBR" because this command is used to apply the route map called PBR to the interface E0. By applying the route map to this interface, any traffic originating from E0 will be routed using the policy defined in the route map, which specifies that the next hop should be S0.
36.
What
command can be used to check whether a route-map is bound to an interface?
Correct Answer
C. Show ip policy
Explanation
The "Show ip policy" command can be used to check whether a route-map is bound to an interface. This command displays the IP policy routing configuration, which includes information about any route-maps that are applied to interfaces. By using this command, network administrators can verify if a specific route-map is being applied to the desired interface.
37.
What
command can be used to debug whether the route map is working as intended?
Correct Answer
C. Debug ip policy
Explanation
The command "debug ip policy" can be used to debug whether the route map is working as intended. This command allows for the debugging of IP policy routing, which includes the use of route maps to control the flow of traffic. By using this command, network administrators can monitor and troubleshoot any issues or inconsistencies in the route map configuration and ensure that it is functioning correctly.
38.
What
command can be used to set up BGP between RA and RC?
Correct Answer
B. Neighbor 10.1.1.2 remote-as 198
Explanation
The correct answer is "Neighbor 10.1.1.2 remote-as 198" because this command is used to establish a BGP neighbor relationship between the local router (RA) and the remote router (RC) with the IP address 10.1.1.2. The "remote-as" parameter specifies the autonomous system number (AS) of the remote router, which in this case is 198. By configuring this command, BGP can be set up between RA and RC to exchange routing information.
39.
What
command can be used to set up BGP between RA and RB?
Correct Answer
C. Neighbor 10.4.4.1 remote-as 189
Explanation
The correct answer is "neighbor 10.4.4.1 remote-as 189" because this command is used to set up a BGP neighbor relationship between two routers. The "neighbor" keyword is used to specify the IP address of the neighbor router, and the "remote-as" keyword is used to specify the autonomous system number of the neighbor router. In this case, the command is setting up BGP between router RA and router RB, with router RB having the IP address 10.4.4.1 and autonomous system number 189.
40.
What
command should be used to set up a relationship between RC and RD?
Correct Answer
D. None of the above
Explanation
The correct answer is "None of the above." This is because the given commands are used to set up relationships between the local router and the specified neighbors, but none of the specified neighbors are RC or RD. Therefore, none of the given commands can be used to set up a relationship between RC and RD.
41.
What
command can be used to advertise the network 10.3.3.0 on RA?
Correct Answer
D. Network 10.3.3.0 mask 255.255.255.0
Explanation
The correct answer is "Network 10.3.3.0 mask 255.255.255.0". This command is used to advertise the network 10.3.3.0 on RA. The network command followed by the network address and subnet mask is used to advertise a network in a routing protocol. In this case, the network address is 10.3.3.0 and the subnet mask is 255.255.255.0, so this command correctly advertises the network with the specified subnet mask.
42.
RA
needs to advertise ALL routing information to RB and RC, only BGP is used in AS
189. What command should
be used to achieve this?
Correct Answer
A. No-synchronization
Explanation
The "no-synchronization" command should be used to achieve the goal of advertising ALL routing information to RB and RC. This command disables the synchronization between the BGP routing table and the Interior Gateway Protocol (IGP) routing table, ensuring that all routes are advertised regardless of their synchronization status. This is necessary in this scenario because only BGP is being used in AS 189, so synchronization is not required.
43.
If
RA want to summarize the whole 1.0.0.0 network, what command/s can be used?1) ip route 1.0.0.0 255.0.0.0 null 0
2) aggregate- address 1.0.0.0 mask 255.255.255.03) aggregate-address 1.0.0.0 255.255.255.0 summary-only 4) network 1.0.0.0 mask 255.0.0.0
Correct Answer
F. 1 and 3 or 4
44.
You
want to pass all traffic in AS 189 through RB. What command will achieve this
for you?
Correct Answer
C. Bgp default local-preference 150
Explanation
The command "bgp default local-preference 150" will achieve passing all traffic in AS 189 through RB by setting a higher local preference value. By default, BGP uses the local preference attribute to determine the preferred path for outbound traffic. Setting a higher local preference value for RB ensures that all traffic from AS 189 will be sent through RB.
45.
What
command should you use to set up RC as a route reflector for RB AND RC?
Correct Answer
D. On RC
neighbor 10.3.3.1 route-reflector-client
neighbor 10.4.4.1 route-reflector-client
Explanation
To set up RC as a route reflector for RB and RC, the "neighbor" command should be used on RC with the IP addresses of RB and RC as the neighbors. The "route-reflector-client" keyword is added to both neighbor commands to specify that these neighbors are route reflector clients. Therefore, the correct answer is "On RC: neighbor 10.3.3.1 route-reflector-client, neighbor 10.4.4.1 route-reflector-client."
46.
What
command should be used to view a prefix list in detail?
Correct Answer
C. Show ip prefix-list
Explanation
The correct answer is "Show ip prefix-list detail" because the "show ip prefix-list detail" command is used to view a prefix list in detail. This command provides a more comprehensive and detailed output compared to other options.
47.
What
is important to remember with class full routing?
Correct Answer
B. Within the same network consistency of the subnet mask is assumed
Explanation
In classful routing, the subnet mask is assumed to be consistent within the same network. This means that all devices within the network must use the same subnet mask. Classful networks do not support the use of classless masks, so the subnet mask cannot be varied within the network. Therefore, the correct answer is that within the same network, consistency of the subnet mask is assumed.
48.
Which
of these protocols does class full auto-summarization?1) Rip2) Rip23) EIGRP4) IGRP5) OSPF6) IS-IS7) BGP
Correct Answer
C. 1,2,3,4,7
49.
Which
of these protocols is class full and only works with FLSM?1) Rip2) Rip23) EIGRP4) IGRP5) OSPF6) IS-IS7) BGP
Correct Answer
A. 1,4
Explanation
RIP (Routing Information Protocol) and IGRP (Interior Gateway Routing Protocol) are both classful protocols that only work with Fixed Length Subnet Masking (FLSM). These protocols do not support Variable Length Subnet Masking (VLSM) which allows for more efficient use of IP addresses. Therefore, the correct answer is 1,4.
50.
Which
if any of these protocols is capable of auto and manual summarization?1) Rip2) Rip23) EIGRP4) IGRP5) OSPF6) IS-IS7) BGP
Correct Answer
C. 2,3,7
Explanation
The protocols capable of auto and manual summarization are EIGRP, IGRP, and BGP. Rip2, OSPF, and IS-IS do not support manual summarization. Rip2, EIGRP, and BGP support auto summarization. Therefore, the correct answer is 2,3,7.