CCNP: BSI Chapter 6 Answer

1
Top of Form
A BGP router has two routes with the same weight, same local preferences and reachable next hops. Both routes originated from peer routers. What is the next tie-breaker in BGP route selection process?
Multi_exit_discriminator
AS_path_length*
Origin
Lowest BGP metric
Bottom of Form
2
Top of Form
Refer to the diagram and configuration. RTA receives the prefix 192.213.0.0/16 from both providers SF and NY. Which of the route-map configurations on RTA will set up NY as a primary link and SF as a backup link?
route-map NY permit 10match access-list 5set local-preference 50!route-map NY permit 20!ip as-path access-list 5 permit ^$
route-map NY permit 10*match as-path 5set local-preference 200!route-map NY permit 20!ip as-path access-list 5 permit ^300$
route-map NY permit 10match as-path 5set local-preference 50!ip as-path access-list 5 permit ^300$
route-map NY permit 10match as-path 5set local-preference 200!ip as-path access-list 5 permit ^$
Bottom of Form

3
Top of Form
Observe the diagram and the configuration on RTA. RTA cannot establish an EBGP session with RTC in AS 100. Which configuration command will fix the problem?
The neighbor 3.3.3.1 remote-as 100 command should be configured on RTA.
The neighbor 1.1.1.2 remote-as 100 command should be configured on RTB.
The neighbor 3.3.3.1 ebgp-multihop command should be configured on RTA.
The neighbor 1.1.1.2 ebgp-multihop command should be configured on RTA.*
The neighbor 1.1.1.2 ebgp-multihop command should be configured on RTB.
Bottom of Form
4
Top of Form
What is a characteristic of an IBGP session type?
Neighbors may be located anywhere within multiple autonomous systems, even several hops away from each other.
A session typically occurs between routers in different autonomous systems with multiple ISPs.
It can be established between routers in the same AS even if they are not link partners.*
It occurs between routers in two different autonomous systems.
Bottom of Form

5
Top of Form
Refer to the exhibit. A network administrator is troubleshooting the BGP configuration on router R2. R2 is not advertising the network connected via FastEthernet0/0 in BGP.
How can the administrator correct this problem?
Disable synchronization.
Enable autosummarization.
Remove the distance bgp command.
Remove the aggregate-address command.
Add a network command.*
Bottom of Form
6
Top of Form
From the given configuration taken from RTA and graphic, which network will be filtered from being propagated to RTC from RTA?router bgp 3no synchronizationneighbor 172.16.1.2 remote-as 3neighbor 172.16.20.1 remote-as 1neighbor 172.16.20.1 distribute-list 1 outno auto-summaryaccess-list 1 deny 192.68.10.0 0.0.0.255access-list 1 permit 0.0.0.0 255.255.255.255
172.16.1.0
172.16.20.0
0.0.0.0
192.68.10.0*
Bottom of Form

7
Top of Form
Multiple paths exist in the BGP table. Assuming the weights are the same, what will the next determining factor be?
lowest MED
locally originated
shortest AS_Path
lowest origin type
largest local preference*
Bottom of Form
8
Top of Form
Refer to the diagram. RTA, RTB, and RTC are connected through Frame Relay. RTA advertises network 180.80.0.0 to RTC with a next hop of 170.70.20.3. When RTC attempts to reach network 180.80.0.0, the routing fails. What should be configured under the BGP routing process to remedy the problem?
RTA(config-router)# neighbor 170.70.20.3 next-hop-self
RTA(config-router)# neighbor 170.70.20.1 next-hop-self*
RTB(config-router)# neighbor 170.70.20.1 next-hop-self
RTA(config-router)# bgp default local-preference 200
RTA(config-router)# neighbor 170.70.20.1 weight 2000
RTA(config-router)# neighbor 170.70.20.1 send-community
Bottom of Form

9
Top of Form
Which three are well-known mandatory attributes? (Choose three.)
AS_PATH*
NEXT_HOP*
LOCAL_PREF
ORIGINATOR_ID
AGGREGATOR
ORIGIN*
Bottom of Form


10
Top of Form
RTB is connected to two different service providers, ISP1 and ISP2, through S0 and S1 respectively. RTB also has network 194.168.1.0 connected to E0 and network 174.16.1.0 connected to E1. The following configuration can be used to policy route traffic based on its source network as well as its destination.RTB(config)# access-list 1 permit 194.168.1.0 0.0.0.255RTB(config)# access-list 2 permit 174.16.1.0 0.0.0.255RTB(config)# route-map ISP1 permit 10RTB(config-route-map)# match ip address 1RTB(config-route-map)# set interface serial0RTB(config-route-map)# exitRTB(config)# route-map ISP2 permit 20RTB(config-route-map)# match ip address 2RTB(config-route-map)# set interface serial1Which commands would apply this policy to route all the 194.168.1.0 traffic to the serial0 interface?
RTB(config)# interface s1RTB(config-if)# ip route-map ISP2
RTB(config)# interface e1RTB(config-if)# ip route-map ISP1
RTB(config)# interface s0RTB(config-if)# ip policy route-map ISP2
RTB(config)# interface e0*RTB(config-if)# ip policy route-map ISP1
Bottom of Form

11
Top of Form
Refer to the diagram. Assume RTB does not have BGP enabled and the neighbor remote-as router configuration command is entered on RTA and RTC. Given this information, which two statements are true? (Choose two.)
RTA will establish a peer relationship with RTB because they belong to the same BGP AS.
RTA will establish a peer relationship with RTC because they have an IBGP session established.*
RTA will establish a peer relationship with RTB although they do not have an IBGP session established.
RTA will establish a peer relationship with RTC although they are not directly connected.*
RTA will establish a peer relationship with RTB because they are directly connected.
Bottom of Form
12
Top of Form
Which command would result in the router sending default route information only to the specified neighbor?
neighbor 172.16.20.1 static-path
neighbor 172.16.20.1 ip route
neighbor 172.16.20.1 default
neighbor 172.16.20.1 default-originate*
Bottom of Form

13
Top of Form
A BGP routing policy has been created using route maps. The command route-map TEST permit 10 is part of the configuration. What does the parameter 10 indicate?
It identifies the access-list number to be used by the route map statement.
It identifies the position of the route map in relation to other instances.*
It indicates the local preference to be set for routes that match the route map.
It specifies the route map to be used on AS 10.
It indicates the metric to be set for routes that match the route map.
Bottom of Form
14
Top of Form
Which command would force a router to inject an external route into BGP?
route-inject
router bgp network
Network*
summary
Bottom of Form

15
Top of Form
Observe the above graphic. RTC is the hub router and RTA and RTB are spokes within a Frame Relay cloud that is NBMA. What must the administrator configure under the router bgp 100 command to allow RTA to communicate with RTB?
the command neighbor 10.10.10.1 next-hop-self on RTC *
the command neighbor 10.10.10.2 next-hop-self on RTA
the command neighbor 10.10.10.2 remote-as 65001 on RTB
the command neighbor 10.10.10.3 remove-private-as on RTC
the command bgp default local-preference on RTA
Bottom of Form