Juniper JN0-662 問題集

質問 1：
According to Juniper Networks, what are three methods of scaling Layer 2 VPNs? (Choose three.)
A. outbound route filters
B. inbound route filters
C. route reflection
D. BGP route refresh
E. filter-based forwarding
正解：A,C,D
解説: (Topexam メンバーにのみ表示されます)

質問 2：
Click the Exhibit button.

Referring to the exhibit, what is the correct prefix length of the route for the multihomed device?
A. 248
B. 296
C. 192
D. 304
正解：D

質問 3：
Which two statements are correct regarding site IDs and circuit IDs in a VPLS routing instance? (Choose two.)
A. In an LDP VPLS routing instance, the vpls-id parameters must match in all locations.
B. In a BGP VPLS routing instance, the site-id parameters must be different in each location.
C. In an LDP VPLS routing instance, vpls-id parameters must be different in each location.
D. In a BGP VPLS routing instance, the site-id parameters must match in all locations.
正解：A,B

質問 4：
Click the exhibit button.

What would be the expected outcome from the configuration shown in the exhibit?
A. The VPLS instance would cycle through all virtual tunnel interfaces on the router to find one to use.
B. The VPLS instance would cycle through all physical interfaces configured on the router to find one to use.
C. The VPLS instance would default to using no-tunnel-services because a tunnel-services interface was not specified.
D. The VPLS instance would use a control-word instead of a tunnel-services interface, or no-tunnel-services parameter.
正解：A

質問 5：
Which statement is correct regarding BGP route reflectors?
A. The route reflectors must have a private AS number.
B. The route reflectors must have a different AS number than the clients.
C. The route reflectors must have a cluster ID configured.
D. The route reflectors must have an EBGP peering session between each other.
正解：C

質問 6：
How is a BGP Layer 2 VPN prefix formed by a PE?
A. by combining the vrf-target and route distinguisher, in that order
B. by combining the route distinguisher, remote site identifier, and site identifier, in that order
C. by combining the route distinguisher, site identifier, and remote site identifier, in that order
D. by combining the route distinguisher and vrf-target, in that order
正解：C

質問 7：
You want to use IS-IS on a GRE interface where the underlying Layer 3 MTU is 1500.
Which statement is correct in this scenario?
A. IS-IS cannot be used, but the router can enable a GRE key that serves the same function as IS-IS.
B. IS IS can be used, but the networking device directly attached to the circuit must be capable of fragmentation.
C. IS-IS can be used because every IS-IS interface must be capable of transmitting packets at least as large as 1476 bytes, and the GRE header is 24 bytes.
D. IS-IS cannot be used because the IS-IS hello is not allowed to be fragmented and has the DF bit set.
正解：B