CMS专题
单选题What is the default function of a secondary path in MPLS?（）A to act as an equal-cost path to the primary pathB to enable another LSP for load balancingC to act as a diverse backup path to the primary pathD to allow the use of explicit path selection vi
题目
to act as an equal-cost path to the primary path
to enable another LSP for load balancing
to act as a diverse backup path to the primary path
to allow the use of explicit path selection via EROs
参考答案和解析
相似问题和答案
第1题：
A. export PATH=pwd
B. export PATH=$PWD
C. export PATH=$PATH:pwd
D. export PATH=$PATH:$PWD
第2题：
What is the function of the command switchport trunk native vlan 999 on a？（）
- A、It designates VLAN 999 for untagged traffic.
- B、It blocks VLAN 999 traffic from passing on the trunk.
- C、It createsa VLAN 999 interface.
- D、It designates VLAN 999 as the default for all unkown tagged traffic.
正确答案:D
第3题：
A. establish starting at the egress router going back to the ingress router
B. establish starting at the ingress router going downstream to the egress router
C. establish when a router learns of a new prefix
D. establish when the path correctly matches the reverse path forwarding check
第4题：
What is the function of the command switchport trunk native vlan 999 on a switch?（）
- A、It designates VLAN 999 for untagged traffic.
- B、It blocks VLAN 999 traffic from passing on the trunk.
- C、It creates a VLAN 999 interface.
- D、It designates VLAN 999 as the default for all unkown tagged traffic.
正确答案:A
第5题：
帧模式MPLS可以利用（）来避免环路。
- A、IP TTL
- B、MPLS TTL
- C、Hop Count TLV
- D、Path Vector TLV
正确答案:A,B,C,D
第6题：
Which two statements about spanning tree path cost are true？（）
- A、The path cost can be changed for an interface using the spanning-tree cost command
- B、The path cost can be changed for an interface using the stp path-cost command
- C、The SPT default path cost depends on the interface speed
- D、The STP default path cost is similar for all interface
正确答案:A,C
第7题：
信元模式MPLS可以利用（）来避免环路。
- A、IP TTL
- B、MPLS TTL
- C、Hop Count TLV
- D、Path Vector TLV
正确答案:C,D
第8题：
Given the following LSP configuration, which statement is true?（）label-switched-path lsp-xyz { to 10.200.1.1; primary path1; secondary path2; secondary path3; no-cspf; } path path1 { 10.200.10.1 strict; } path path2 { 10.200.20.1 strict; } path path3 { 10.200.30.1 loose; }
A. The router will use path1 when it is available and stable.
B. The router will use path3 when it is available and stable.
C. The router will attempt to establish path2 only when path1 and path3 are down.
D. The router will attempt to establish path1 only when path2 and path3 are down.
第9题：
What protocol is used for Path Setup in MPLS traffic engineering？（）
- A、OSPF
- B、ISIS
- C、BGP
- D、RSVP
- E、PIM
正确答案:D
第10题：
What IOS commands display MPLS label mapping on an LSR？（）
- A、Show mpls forwading-table
- B、Show mpls ldp bindings
- C、Show mpls ldp neighbor detail
- D、Show mpls ldp parameters
- E、Show mpls ldp discovery
正确答案:B