Alcatel-Lucent 4A0-101 問題集

質問 1：
Which of the following statements regarding IS-IS LSPs is true?
A. There are three types of LSPs: L1, L2 and L1/L2.
B. Separate databases are maintained for L1 , L2, and L1/L2 LSPs.
C. The lower the LSP sequence number, the more current the update.
D. An LSP packet contains the ATT bits and the IS-type bits.
正解：D

質問 2：
What command will show the OSPF neighbors, and their status on the Alcatel-Lucent 7750 SR?
A. Show router ospf adjacency
B. Show ospf neighbors
C. Show ospf adjacency
D. Show router ospf neighbors
正解：D

質問 3：
Static routing will be used in a network between a corporate head office, with many connected networks, and a branch office, with one connection to the head office. Which of the following best describes the likely configuration?
A. The corporate head office router will have a default route and the branch site will have a more specific static route.
B. The corporate head office router will have a more specific static route and the branch office router will have a default route.
C. The corporate head office router and the branch router will both have default routes.
D. The corporate head office router and the branch office router will both have specific static routes.
正解：B

質問 4：
Click on the exhibit.

Given the contents of the LSPs from routers R1 and R2, which of the following is TRUE?
A. Router R1 does not summarize the prefixes from routers R3 and R2 summarizes them as 192.168.0.0/16.
B. RouterR1summarizes the prefixes from router R3 as 192.168.0.0/20 and router R2 does not summarize the prefixes.
C. Router R1summarizes the prefixes from router R3 as 192.168.0.0/16 and router R2 does notsummarize the prefixes.
D. Both routers R1 and R2 summarize the prefixes from R3 as 192.168.0.0/20.
E. Neither router R1 nor router R2 summarizes the prefixes from router R3.
F. RouterR1does not summarize the prefixes from routers R3 and R2 summarizes them as 192.168.0.0/20.
正解：D

質問 5：
A new router is added to a broadcast network. What is used by IS-IS as the tie breaker for selecting the DIS if the priorities are the same?
A. The existing DIS remains the DIS.
B. The Hello packet with the highest sequence number.
C. The router with the highest interface MAC address.
D. The router with the highest loopback address.
E. The router with the highest system ID.
正解：C

質問 6：
Click on the exhibit.

Given the output shown, which router is the ASBR in this network?
A. 10.10.10.4
B. 10.10.10.3
C. 10.10.10.2
D. There is no ASBR configured in the network.
E. 10.10.10.6
正解：A

質問 7：
Click on the exhibit.

Router R2 uses IS-IS to advertise the network 192.168.3.0/24 to R1. How can router R1 discard the route?
A. Use an import policy and a prefix list on router R1.
B. Use an export policy and a prefix list on router R1.
C. Use an import policy and a prefix list on router R2.
D. Router R1 cannot discard the route because IS-IS does not support import policies.
正解：D

質問 8：
Which of the following statements regarding OSPF routing updates on a point-to-point link is true?
A. On a point-to-point link, a DR and BDR are elected. To ensure resiliency, both the DR and BDR send link-state advertisements describing the network.
B. On a point-to-point link, there is no need for a DR and BDR election; all routing updates are sent to 224.0.0.5.
C. On a point-to-point link, there is no need for a DR and BDR election. All routing updates are sent to the unicast address of the neighbor's interface.
D. On a point-to-point link, a DR and BDR are elected. The DR sends link-state advertisements describing the network.
正解：B

質問 9：
Click on the exhibit.

Router R1 distributes its globally routed address and its loopbacks into IS-IS. Routers R2 and R4 have their globally routed addresses in IS-IS.
How many routes will router R4 have in its IPv6 route table?
A. 2
B. 3
C. 4
D. 6
E. 7
F. 5
正解：D