Alcatel-Lucent 4A0-102 問題集

質問 1：
Which of the following regarding BGP confederations is FALSE?
A. Member ASs within a confederation can use route reflection.
B. Within a confederation, each member AS is considered as a stand-alone AS.
C. The entire confederation is viewed as a single AS by an eBGP peer.
D. Member ASs must be fully meshed within a confederation.
正解：D

質問 2：
Click the exhibit.

Router R1 is a route reflector with clients R2, R5 and R6. Prefixes advertised by router R5 have a local preference of
200. Router R3 advertises the prefix 192.168.1.0/27 to routers R5 and R6. Assuming that router R6 is configured with
"advertise-external", what is the expected output of "show router bgp routes" when executed on router R5?

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

質問 3：
An Alcatel-Lucent 7750 SR receives a route from an eBGP peer with a MED value of 500. What MED value is sent to
iBGP peers?
A. None
B. 500
C. The IGP cost
D. 100
正解：B

質問 4：
Click the exhibit.

Which of the following about the relationship between ISP 1 and ISP 3 is TRUE?
A. ISP 3 is downstream from ISP1 and is expected to pull more traffic from ISP 1 than it pushes toward it.
B. ISP 1 is downstream from ISP 3 and is expected to push more traffic toward ISP 3 than it pulls from it.
C. ISP 3 is downstream from ISP 1 and is expected to push more traffic toward ISP 1 than it pulls from it.
D. ISP 1 is downstream from ISP 3 and is expected to pull more traffic from ISP 3 than it pushes toward it.
正解：D

質問 5：
Click the exhibit.

Assuming the network is IPv6 only, which of the following configurations on the Alcatel-Lucent
7750 SR router A can establish an IPv6 BGP session to router B?

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

質問 6：
Two Alcatel-Lucent 7750 SRs are established BGP peers with the following add-paths configuration:
R1: configure router bgp add-paths ipv4 send 4 receive
R2: configure router bgp add-paths ipv4 send 2
If router R1 advertises three routes for a given prefix X, how many routes is router R2 expected to have for prefix X?
A. 2
B. 3
C. None
D. 4
正解：B

質問 7：
What is the purpose of configuring a triggered-policy on an Alcatel-Lucent 7750 SR?
A. Policy changes are delayed until route updates for affected BGP routes are received from peers.
B. Policy changes are delayed until BGP sessions are cleared or BGP is reset.
C. Policy changes are delayed until the router reboots.
D. Policy changes are delayed until the peer router with the affected routes reboots.
正解：B

質問 8：
How are policy direction and data flow related on the Alcatel-Lucent 7750 SR?
A. Policy direction and data flow are independent.
B. Export policies affect ingress data flow.
C. Import policies affect ingress data flow.
D. Both import and export policies affect ingress data flow.
正解：B

質問 9：
Click the exhibit.

An update travels from AS 137000 to AS 135000, traversing both 32-bit and 16-bit AS Paths. What AS Path is seen by
AS 200?
A. 200 140000 137000
B. 23456 23456
C. 137000 140000
D. 140000 137000
正解：B