Alcatel-Lucent 4A0-101 問題集

質問 1：
Which of the following regarding the IS-IS PSNP is FALSE?
A. PSNPs are used by an IS-IS router to request LSP information from a neighboring router.
B. There are three types of PSNPs: Level 1, Level 2, and Level 1/2.
C. A PSNP lists some of the LSPs in the router's database.
D. PSNPs are used on point-to-point links to acknowledge the receipt of an LSP.
正解：B

質問 2：
What acts as the tie breaker on an Alcatel-Lucent 7750 SR if the priorities are the same when IS-IS is electing a DIS?
A. The loopback address
B. The sequence number of the hello packet
C. The system ID
D. The device that first initiated communication becomes the DIS
正解：C

質問 3：
Click on the exhibit.

The numbers beside the links are the metrics for that link.
Given the diagram, what path will traffic follow from router R1 to router R7,and from router R7 to router R1, if IS-IS is the routing protocol?
A. Router R1 to router R7 will follow (R1-R2-R4-R6-R7). Router R7 to R1 will follow (R7R6-R4-R2-R1)
B. Router R1 to router R7 will follow (R1-R2-R4-R6-R7). Router R7 to R1 will follow (R7R6-R5-R3-R1)
C. Router R1 to router R7 will follow (R1-R3-R5-R6-R7). Router R7 to R1 will follow (R7R6-R5-R3-R1)
D. Router R1 to router R7 will follow (R1-R3-R5-R6-R7). Router R7 to R1 will follow (R7R6-R4-R2-R1)
正解：D

質問 4：
Click on the exhibit.

What type of OSPFv3 LSA is shown?
A. Network LSA
B. Link LSA
C. Inter-Area Prefix LSA
D. Router LSA
正解：A

質問 5：
Click the exhibit button

The 192 168 3.0/24 network is learned on router R1 via IS-IS Given the OSPF configuration shown, and assuming that the OSPF adjacency between routers R1 and R3 is up, why is the 192 168.3.0/24 route not in router R3's route table? (Choose two)
A. The interface between routers R1 and R3 needs to be in OSPF area 0 rather than OSPF area 1 because a backbone area must always exist.
B. The no-redistribute-external command is used on router R1
C. The route policy is incorrect. It should say "from protocol ISIS" rather than "from protocol direct".
D. It is not possible to be an ASBR and an NSSA. The ASBR configuration should be removed.
E. The route policy should be applied as in import policy
正解：B,C

質問 6：
Which of the following best describes the actions after an IS-IS router receives on a broadcast interface, a newer LSP than the one in its database?
A. The router sends a copy of the LSP from its database to its neighbor
B. The router updates its database with the LSP and acknowledges it with a PSNP.
C. The router updates its database with the LSP, acknowledges the LSP with a PSNP and floods a copy to its other neighbors.
D. The router updates its database with the LSP and floods a copy to its other neighbors.
正解：D

質問 7：
What are the ways the RID can be created on an Alcatel-Lucent 7750 SR router? (Choose three)
A. By using the command "config router ospf rid X.X.X.X"
B. From the highest interface IP address
C. From the first 32 bits of the chassis MAC address
D. The loopback IP address
E. From the system IP address
F. From the last 32 bits of the chassis MAC address
正解：A,E,F

質問 8：
Which of the following is an optional parameter when configuring IS-IS protocol on a router?
A. Configure level capabilities
B. Configure IS-IS interfaces
C. Specify an area address
D. Enable IS-IS
正解：A

質問 9：
In IS-IS, which of the following regarding an L1/L2 router is FALSE?
A. An L1/L2 router advertises its L2 routes to other L1 routers in the same area.
B. An L1/L2 router sets the ATT bit in L1 LSPs to indicate that it has routes to other areas.
C. An L1/L2 router calculates separate SPF trees for the Level 1 and Level 2 topology.
D. An L1/L2 router can have adjacencies with routers in different areas.
正解：A