QUESTION 251
Which two statements are true of IS-IS? (Choose two.)
A. |
When configured on a broadcast segment, IS-IS elects a designated intermediate system that establishes adjacencies with all IS-IS enabled nodes on the segment. |
B. |
When configured on a broadcast segment, IS-IS forms a full mesh of adjacencies called a mesh group; unlike OSPF, no designated device exists to represent the segment. |
C. |
When configured on a broadcast segment, IS-IS elects a backup designated intermediate system. |
D. |
When configured on a broadcast segment, the network itself is called a pseudo-node |
Correct Answer: AD
QUESTION 252
A company’s Junos-based router has two EBGP peers and receives two BGP update messages with the following information:
Peer A – AS path [ 65001 64513 12 ] ; MED 67 ; origin value 1
Peer B – AS path [ 65002 64513 12 ] ; MED 70 ; origin value 2
Assuming default values, how will the company router react to these updates?
A. |
The path through Peer A will be preferred for all traffic to that destination. |
B. |
The path through Peer B will be preferred for all traffic to that destination. |
C. |
The paths will be load balanced to that destination based on a Layer 3 hash. |
D. |
The company router marks the routes as hidden to that destination because the MED exceeds 63. |
Correct Answer: A
QUESTION 253
Which statement is true of BGP communities?
A. |
Communities are used to identify BGP routes based on the originating route’s attributes, whether it is an internal route, an external route, or unknown. |
B. |
Communities are added by route reflectors. A route reflector appends its own IP address and the autonomous system number separated by a colon in the community field each time a route traverses it. |
C. |
Communities are used to determine preference within a network; lower community values are more preferable than higher values. |
D. |
Communities are used as a tool for sorting and categorizing routes based on user- defined criteria. |
Correct Answer: D
QUESTION 254
Which configuration allows the virtual IP address to respond to pings?
A. |
[edit interfaces fe-0/0/0 unit 50 family inet address 192.168.0.12/24] user@RouterA# show vrrp-group 50 { virtual-address 192.168.0.1; fast-interval 250; preempt; accept-data; } |
B. |
[edit interfaces fe-0/0/0 unit 50 family inet address 192.168.0.12/24] user@RouterA# show vrrp-group 50 { virtual-address 192.168.0.1; fast-interval 250; no-preempt; no-accept-data; } |
C. |
[edit interfaces fe-0/0/0 unit 50 family inet address 192.168.0.12/24] user@RouterA# show vrrp-group 50 { virtual-address 192.168.0.1; fast-interval 250; accept-icmp; } |
D. |
[edit interfaces fe-0/0/0 unit 50 family inet address 192.168.0.12/24] user@RouterA# show vrrp-group 50 { virtual-address 192.168.0.1; priority 220; advertise-interval 10; preempt; accept-packets; } |
Correct Answer: A
QUESTION 255
Router A is configured as the VRRP master and Router B is configured as the backup. Router A has lost the mastership and has become the backup router and you need to find out why. Which two commands should you use to determine why Router A is no longer the VRRP master? (Choose two.)
A. |
show vrrp |
B. |
show vrrp summary |
C. |
show vrrp detail |
D. |
show vrrp track |
Correct Answer: CD
QUESTION 256
Which two adjacencies are allowed to form when configuring IS-IS? (Choose two.)
A. |
a Level 1 router in Area 5 connected to a Level 2 router in Area 5 |
B. |
a Level 1 router in Area 4 connected to a Level 1 router in Area 2 |
C. |
a Level 2 router in Area 4 connected to a Level 2 router in Area 8 |
D. |
a Level 1 router in Area 3 connected to a Level 1 router in Area 3 |
Correct Answer: CD
QUESTION 257
Which field of the IP header is modified on a payload packet when using GRE?
A. |
time to live |
B. |
source address |
C. |
protocol |
D. |
fragment offset |
Correct Answer: A
QUESTION 258
In the configuration shown in the exhibit, you want to form an EBGP peering relationship to the loopback address of a router administered by your ISP, but the session will not establish. What is causing the problem?
A. |
EBGP cannot peer to a virtual address. |
B. |
The EBGP session needs to be explicitly configured with multihop. |
C. |
The EBGP session needs to be explicitly configured as type external. |
D. |
The autonomous system information needs to be configured under [protocols bgp]. |
Correct Answer: B
QUESTION 259
Router 2 is receiving a route to 10.0.0.0/8 from Router 4 and Router 5. What will Router 2 do with the routes shown in the exhibit?
A. |
Router 2 will mark both routes active if both next hops are reachable. |
B. |
Router 2 will prefer the route received from Router 4 because of a lower origin code value. |
C. |
Router 2 will prefer the route that arrived first because neither route is necessarily preferable over the other. |
D. |
Router 2 will prefer the route received from Router 5 because it has a lower MED value. |
Correct Answer: B
QUESTION 260
An IP-IP tunnel must meet which two requirements to function correctly? (Choose two.)
A. |
The tunnel end points must have a valid route to each other. |
B. |
The tunnel end points must be distributed inside the IGP. |
C. |
A GRE tunnel must be established first to carry the IP-IP tunnel. |
D. |
All devices in between the tunnel end points must have a valid route to the tunnel end points. |
Correct Answer: AD
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