Nokia 4A0-C04 問題集

質問 1：
Which of the following is a characteristic of a VPLS?
A. An additional T-LDP session is required between PEs for each additional VPLS that is provisioned.
B. When a new site is added, all the existing sites need to be shutdown and re-provisioned.
C. All SAPs of a VPLS belong to the same broadcast domain.
D. Multiple VPLSes on the same router share a single MAC FDB.
正解：C

質問 2：
Which of the following regarding label population is TRUE?
A. Selected labels from the LIB are populated to the LFIB.
B. Selected labels from the LIB are populated to the FIB.
C. Selected labels from the FIB are populated to the LFIB.
D. Selected labels from the RIB are populated to the FIB.
正解：A

質問 3：
What are the default Hello and Dead timer intervals for OSPF on the Nokia 7750 SR?
A. 5 and 15 seconds
B. 10 and 40 seconds
C. 5 and 20 seconds
D. 10 and 30 seconds
正解：B

質問 4：
Which of the following LSA types stay within an OSPF area, and are not flooded outside of the area? Choose two answers.
A. Network LSA
C Summary network LSA
B. Type 5 (AS external) LSAs
C. Summary router LSA
D. Router LSA
正解：A,D

質問 5：
Initially, all ports on an Nokia 7750 SR have 10Gbps bandwidth. RSVP configuration limits reservable bandwidth to 30 percent on all interfaces. An LSP is signaled reserving 1 Gbps bandwidth. How much unreserved bandwidth is left on the interface?
A. 3 Gbps
B. 2 Gbps
C. 10 Gbps
D. 7 Gbps
正解：B

質問 6：
Click the exhibit button.

Two neighboring OSPF routers have exchanged the packets shown. What state is the adjacency in?
A. The adjacency is down.
B. The adjacency is in exstart state.
C. The adjacency is in the exchange state.
D. Full; both routers are exchanging Helios to maintain the adjacency.
正解：B

質問 7：
Click on the exhibit.

A fully loose LSP "toR6" is configured. All links have the same cost and all routers are Nokia 7750 SRs. The LSP currently traverses the path R1-R2-R7-R8-R4-R6 and the resignal timer is enabled. Which of the following about this LSP is FALSE?
A. The LSP will switchover to a better path in a MBB fashion.
B. CSPF must be enabled for this LSP to attempt to find a better path.
C. The LSP will switchover to another path if a failure occurs.
D. The LSP will switchover to a better path as soon as it is available.
正解：D

質問 8：
Which MPLS mode saves only active label mappings received from peer LSRs?
A. Downstream unsolicited
B. Liberal label retention
C. Downstream on demand
D. Conservative label retention
正解：D

質問 9：
Which of the following is considered a best practice for BGP address planning?
A. Exporting the networks associated with the external links of eBGP peers into BGP.
B. Using system addresses for setting up iBGP sessions.
C. Optimizing BGP route table by exporting IGP routes into BGP.
D. Advertising external networks into IGP.
正解：B