Free Huawei H31-161 Exam Dumps Questions & Answers

Exhibit:

As shown in the figure, RTA and have one BGP session. To detect fault fast, the BFD for BGP feature needs to be configured on RTA and RTB. BGP-related configurations are as follows:

The only Ethernet link between RTA and RTB becomes faulty when the BGP neighbor session is in ESTABLISHED state and the BFD session is in the UP state. Which statements is true? (Note: BFD works in asynchronous mode)

• A.The BGP session between RTA and RTB is interrupted when the BGP hold time (time duration is 180s by default) express.
• B.RTA detect the fault faster than RTB.
• C.RTA and RTB detect the fault simultaneously.
• D.RTB detect the fault faster than RTA.

An Ethernet cable connects RTA to RTB through Ethernet 0/0.the OSPF neighbor relationship can be established without enabling the OSPF authentication function is enabled, Which of the following statements about the OSPF relationship between RTA and RTB are true?

• A.The OSPF neighbor relationship can be established between RTA and RTB
• B.The OSPF neighbor relationship cannot be established between RTA and RTB due to failure of area authentication
• C.Simple authentication is used between RTA and RTB
• D.MD5 authentication is used between RTA and RTB

BFD for RSVP is a mechanism that uses BFD to check the connectivity of RSVP neighbors. As shown in the figure, TE FRR node protection is deployed to protect a node, the blue path is the primary LSP (RTA -> RTB -> RTC -> RTD -> RTE) and the red one is the bypass LSP (RTB -> RTF -> RTD). Which of the following statements about BFD for RSVP are true?

• A.The BFD session triggered by RSVP is for the exclusive use of RSVP.
• B.Only RSVP HELLO needs to be enabled if RSVP GR instead of TE FRR is deployed on a network.
• C.BFD for RSVP needs to be enabled only on RTB if you expect to set up a BFD for RSVP session on RTB to check the connectivity between RTB and RTC.
• D.TE FRR will be triggered only when the link between RTB (acting as the PLR) and RTC (the node under protection) is faulty or RTC is faulty but will not be triggered when the link between RTC and RTD (acting as the MP) is faulty. This problem can be solved by establishing a BFD session between RTB and RTD. In this case, faults may be reported falsely or be missed.

In which L2VPN technology is L2VPN information transferred through the extended LDP signaling?

• A.Cross circuit connection (CCC)
• B.SVC
• C.Martini
• D.Kompella

As shown in the figure, the PHP function is enabled on all routers by default and an MPLS TE tunnel RT 1-RT 2-RT 3-RT 4-RT 5 is set up between RT 1 and RT 5. See the figure for label distribution of the TE tunnel. A bypass tunnel RT 2-RT 6-RT 4 is configured on RT 2 to protect RT 3. See the figure for the label distribution of the bypass tunnel. When RT 3 is faulty, RT 2 switches traffic to the bypass tunnel. How many MPLS labels do packets on the path from RT
6 to RT 4 have? What is the value of each label?

• A.One label; label value: 3
• B.Two labels; label value: 1200 for the outer label and 2200 for the inner label
• C.One label; label value: 2200
• D.Two labels; label value: 3 for the outer label and 2200 for the inner label