Juniper JN0-660 問題集

質問 1：
Click the Exhibit button.

You are asked to configure an OSPF network based on the topology shown in the exhibit. You must keep the link-state database in Area 1 as small as possible. What will accomplish this?
A. Area 0 should be configured with a virtual link to R4 to limit the size of the Area 1 link-state database.
B. Area 0 should be configured as a stub area so that it will not announce routes into Area 1.
C. Area 1 should be configured as a stub area with no-summaries to limit the size of the link-state database.
D. Area 1 should be configured as an NSSA to limit the size of the link-state database.
正解：D

質問 2：
Router R5 has the overload parameter configured. Which statement is true?
A. R5 will purge its LSAs from the network until the overload condition is cleared.
B. R5 will increase its link metrics to 65535 and will stop forwarding transit traffic to OSPF destinations.
C. R5 will send an overload LSA to its neighbors to indicate it is in the overload state.
D. R5 will increase its link metrics to 65535 and will continue to forward transit traffic to OSPF destinations.
正解：D

質問 3：
You are facing BGP scaling issues and decide to add dedicated route reflectors to your network. You notice that VPN routes are not being advertised by your route reflectors. Which three actions can you take to solve this? (Choose three.)
A. Add a static default route to inet.3 and/or inet6.3 on all of the client routers.
B. Use rib-groups to add IGP routes to inet.3 and/or inet6.3 on the route reflectors.
C. Add MPLS LSPs between the route reflectors and their client routers.
D. Add a full mesh of MPLS LSPs between all of the route reflectors.
E. Add a static default route to inet.3 and/or inet6.3 on the route reflectors.
正解：B,C,E

質問 4：
Click the Exhibit button.

Referring to the exhibit, which statement is true assuming BGP Layer 2 VPN signaling?
A. PE1 receives two BGP NLRI updates, each containing a remote site ID, a label base, and Layer 2 encapsulation.
B. PE2 receives two BGP NLRI updates, each containing a remote site ID, label vc, and Layer 2 encapsulation.
C. PE2 receives one BGP NLRI update containing a remote site ID, a label base, and Layer 2 encapsulation.
D. PE1 receives one BGP NLRI for VPN A containing only a remote site ID and a label offset value.
正解：A

質問 5：
Click the Exhibit button.

You are configuring a new PE router in your Layer 3 VPN. A remote PE router is using the configuration shown in the exhibit. Which configuration is needed to receive customer-vpn routes from the remote PE?

A. Option A
B. Option C
C. Option D
D. Option B
正解：B

質問 6：
Click the Exhibit button.

What would happen if the guaranteed-rate command is removed from the configuration shown in the exhibit?
A. The minimum-rate command should be configured instead.
B. The logical interface gets a minimal bandwidth reservation.
C. The logical interface receives no bandwidth constraints.
D. The transmit-rate command should be configured instead.
正解：B

質問 7：
Click the Exhibit button.

The configuration excerpts shown below are applied to R1 and R2:

Based on the exhibit and the configurations above, what combination of IS-IS adjacencies are created between R1 and R2?
A. L1 only
B. Both L1 and L2
C. No adjacency is created
D. L2 only
正解：C