单选题With MPLS Fast Reroute, what is the "point of local repair"?()A egress routerB ingress routerC start of the bypass tunnelD all routers in the bypass tunnel

题目
单选题
With MPLS Fast Reroute, what is the "point of local repair"?()
A

egress router

B

ingress router

C

start of the bypass tunnel

D

all routers in the bypass tunnel

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第1题:

With MPLS Fast Reroute, what is the "point of local repair"?()

A. egress router

B. ingress router

C. start of the bypass tunnel

D. all routers in the bypass tunnel


参考答案:C

第2题:

Which CLI command is used to enable MPLS Fast Reroute on a ingress router?()

A. mpls fast reroute

B. mpls fast-reroute

C. enable mpls fast-reroute

D. tunnel mpls fast-reroute


参考答案:D

第3题:

How is an RSVP resv message sent back to the ingress router?()

A. reverse path of the RRO

B. least cost to the ingress router

C. shortest path to the egress router

D. reverse path of the path vector TLV


参考答案:A

第4题:

On Cisco Nexus 5000 Series Switches, where are the virtual output queues implemented, and what is the main purpose of virtual output queues?()

  • A、 on all ingress interfaces; to ensure maximum throughput on a per-egress, per-CoS basis
  • B、 on all ingress interfaces; to provide independent congestion management and 16 queues
  • C、 on all egress interfaces; so that a congested egress port does not affect traffic directed to other egress ports
  • D、 on all egress interfaces; to prevent head-of-line blocking by utilizing multiple virtual output queues
  • E、 on all egress interfaces; to be able to use EEE 802.1p CoS

正确答案:A

第5题:

Which three statements about the Cisco MPLS TE Fast Reroute (FRR) process are true?()

  • A、TE tunnels that are configured with the FRR option cannot be used as backup tunnels.
  • B、TE tunnels that are configured with the FRR option can be used as backup tunnels.
  • C、The backup tunnel that is used to protect a physical interface must have a valid IP address configured.
  • D、Interfaces must use MPLS global label allocation.
  • E、The source IP address of use backup tunnel and the merge point (MP) should not be reachable.

正确答案:A,C,D

第6题:

What is true about a Bypass Tunnel in MPLS Fast Reroute?()

A. Only configured on the egress router

B. Only configured on the ingress router

C. Is pre-signalled to reduce packet loss

D. Must intersect the primary LSP at two locations


参考答案:D

第7题:

The policy action of color is used for congestion control under which circumstance?()

A.congestion in an upstream router

B.congestion in a downstream router

C.contention for queue space on an egress interface

D.contention for queue space on an ingress interface


参考答案:C

第8题:

What is the term "ordered control" mean regarding how MPLS LSPs are established?()

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


参考答案:A

第9题:

Which statement about the Cisco MPLS TE Fast Reroute (FRR) node protection operation is not correct?()

  • A、It requires a next-next hop backup tunnel.
  • B、Point of local repair (PLR) swaps the next hop label and pushes the backup label.
  • C、The backup tunnel terminates on the merge point (MP) where traffic rejoins the primary tunnel.
  • D、The backup tunnel can have associated bandwidth capacity.
  • E、Restoration time is expected under 50 ms.

正确答案:E

第10题:

Where are MPLS point-to-multipoint traffic engineering packets replicated?()

  • A、head-end router
  • B、branch-point router
  • C、midpoint router
  • D、leaf-point router
  • E、tail-end router

正确答案:B

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