默认题库 - CCIE SP

单选题

Using more than one label on a single packet is required in what context？（）

A. MPLS TE
B. MPLS VPN
C. When CEF switching and Label switching is done
D. In all the above circumstance

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单选题

GMPLS is based upon Non-Packet-based devices.（）

A. True
B. False

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单选题

Which of the following is true regarding Label Distribution Protocol （LDP）？（）

A. It is a label distribution protocol for MPLS
B. It is a set of procedures and messages by which LSRs establish Label Switch Paths （LSPs） through a network
C. Tag distribution Protocol （TDP） was the basis for LDP
D. All of the above are true

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单选题

What is the main difference between the information displayed on the dspload and the dsptrkutl screens？（）

A. The dspload screen is for all trunks； the dsptrkutl screen is for one trunk
B. The dspload screen shows the expected traffic； the dsptrkutl screen shows actual traffice
C. The information on the dspload screen never changes； the dsptrkutl screen is dynamic
D. The dspload screen shows historical information； the dsptrkutl screen shows current informatio

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单选题

Which statement is FALSE concerning the interleave depth value？（）

A higher interleave depth provides more protection from burst of noise on the HFC network
B. Higher interleave depth increase downstream latency
C. Lower interleave depth cause some packet loss on typical HFC networks
D. None ofthe above

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多选题

Which IOS features are used to avoid Routing loops when dynamic Routing protocols are used betweenPE and CE in MPLS-VPN networks？（）

A. Site Of Origin SO
B. SHAM links with OSPF
C. BGP cost community
D. BGP feature allow-as in
E. RPF Reverse Path forwarding.
F. Access-list Control in Distance Vector protocol like RIP and EIGR

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单选题

What is the importance of using Virtual Output Queues on ingress Line Cards in a high-end router？（）

A. Prevents head-of-line blocking
B. Uses less memory
C. Increases forwarding performance
D. Simplifies configuratio

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单选题

What best explains the BGP route-reflector function？（）

A. BGP route-reflector should be in forwarding path of data coming from its clients
BGP route-reflector does not have to be in the forwarding path of data coming from its clients
C. BGP route-reflector will stop reflecting the routes if they’re not directly-connected clients
D. None of the above

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多选题

In Multicast VPN （MVPN） implementations， which two of the following statements are regarding the DefaultMDT Group？（）

A. It is used for PIM control traffic
B. It is optionally configured for a high bandwidth multicast source to reduce multicast traffic replication to uninterested PE routers
C. Within the VPF configuration in the PE router， multiple Default MDT groups are configured so each VPF can support multiple multicast sources
D. There is a reduced multicast state in the MPLS core P routers
E. When multicast traffic exceeds a certain configured threshold， traffic from the Data MDT is switched to the Default MDT to conserve bandwidth

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多选题

Which statements are correct for forwarding traffic into MPLS TE tunnels？（）

Autoroute causes the tunnel to be treated as a directly connected link to the head-end.
B. Autoroute causes the TE head-end to establish IGP adjacency with the tail-end over the tunnel.
C. Forwarding adjacency makes the TE head-end node advertise the Tunnel LSP into the IG
D. Forwarding adjacency supports unequal cost load balancing over multiple TE tunnels.

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