Alcatel-Lucent 4A0-102 問題集

質問 1：
Which of the following is NOT a goal of BGP routing policies?
A. To protect external networks from instability.
B. To communicate the architecture of an AS to external ASs.
C. To protect the local AS and other external ASs from bad NLRI.
D. To optimize ingress and egress traffic patterns to best serve the users of the AS.
正解：B

質問 2：
Click the exhibit.

After router A receives the BGP update for the 10.3.3.0/24 prefix, which routers will the route be propagated to?
A. All routers with which it has a BGP session.
B. All routers with which it has a BGP session, except the router it received the update from, which is router
C. Only eBGP neighbors.
D. All routers with which it has a BGP session, except the router it received the update from, which is router
E. All routers with which it has a BGP session, except the router it received the update from, which is router
正解：C

質問 3：
Which of the following statements regarding BGP route selection is TRUE?
A. Higher MED is preferred over lower MED.
B. Lower local preference is preferred over higher local preference.
C. Higher origin code is preferred over lower origin code.
D. Lower BGP router ID is preferred over higher BGP router I
正解：D

質問 4：
An Alcatel-Lucent 7750 SR receives a route from an eBGP peer without a MED. What MED value is sent to iBGP peers?
A. None
B. The IGP cost
C. 250
D. 100
正解：A

質問 5：
Assuming that "client1" and "client2" are directly-connected networks, what is the result of executing the following
BGP policy?

A. "client2" routes will be tagged with community "South".
B. "client2" routes will be tagged with communities "West" and "North".
C. "client2" routes will be tagged with community "West".
D. "client2" routes will be tagged with communities "West", "North" and "South".
正解：C

質問 6：
Click on the exhibit.

AS 65540 is using MPLS to provide BGP shortcuts for its iBGP routing. AS 65541 is advertising prefix 192.168.1.0/27
into BGP. Which routers have the BGP update for the advertised prefix in their BGP table?
A. Routers R1and R4 only.
B. Routers R1, R2, R3, R4 and R5.
C. Routers R1, R4 and R5 only.
D. Routers R1, R2, R3 and R4 only.
正解：C

質問 7：
Click the exhibit.

Assume all router-IDs are properly configured, and IPv6 link-local addresses are used to establish all eBGP sessions.
Given the following iBGP configuration on router A, what is the Next Hop for prefix 2001:DB8:A:401::1/128 on router
B?

A. The IPv6 global address of router A.
B. The IPv6 global address of router
C. The IPv6 link-local address of the router D interface towards router
D. The IPv6 link-local address of the router A interface towards router D.
正解：A

質問 8：
Which of the following about default BGP behavior is FALSE?
A. Next Hop is modified in iBGP updates.
B. Origin Code is NOT modified in eBGP updates.
C. Local Preference is NOT modified in iBGP updates.
D. AS Path is modified in eBGP updates.
正解：A

質問 9：
Click the exhibit.

Given the following configuration for router R1, what is the expected Next Hop for prefix 192.168.1.0/27 as seen on
router R2?

A. 10.0.2.1
B. 10.16.10.1
C. 10.0.2.2
D. 10.16.10.3
正解：C