A.Greater scalability is offered
B.The ASBR holds VPNv4 routes
C.Relative technical simplicity is offered
D.Lower relative security is offered
E.Multihop E-BGP between ASBRs is utilized
F.Better suitability for InterProvider VPNs is provided
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A.LDP is primarily used in internal networks of MPLS-VPN providers.
B.MP-BGP is used for label distribution for VPN customer routes.
C.Directed LDP is used for label distribution in L2-VPN Attachement Circuits.
D.MP-BGP is used for label distribution in MPLS Traffic Engineered networks.
A.Amplification is prevented if global changes have only a local effect as opposed to systems in which global changes have a local effect
B.Amplification is prevented if local changes have only a local effect as opposed to system inwhich localchange have a global effect
C.Internet domain does not suffer from“The Amplification Principle”as BGP takes care of misbehaving advertisers
D.None of the above
A.Following a link flap in the BGP speaker’s AS
B.During initial convergence.
C.Following a Route Processor Switchover.
D.Just before sending a CEASE message to tear down the session.
E.During capability negotiation
A.cs3
B.cs7
C.ef
D.af41
E.af31
F.0（default）
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
A.Logging detect fail-login
B.Login on-failure log
C.Login detect login-failure log
D.Logging login on-failure
E.none of the above
A.GFC-4 bits of generic flow control
B.Forward-explicit congestion notification（FECN）
C.VCI-16 bits of virtual channel identifier
D.CLP-1 bit of congestion loss
E.HEC-8 bit of header error control
F.ATM Discard Eligibility（DE）bit
A.lowest cost
B.highest bandwidth
C.lowest hop-count
D.path attributes
E.lowest delay
A.It prevents message looping，Session Advertisement（SA）messages must be RPF checked
B.RPF check should be done against the route to the Rendez-vous Point of the corresponding PIM-SM domain，which originated the SA
C.RPF checking Session Advertisement（SA）messages will cause message looping
D.RPF check should be done against the route to the source S of the corresponding PIM-SM domain
A.LDP and RSVP
B.RSVP and CEF
C.CEF and the FIB table
D.UDP and IP
E.A and B
最新試題
Which two statements about Layer 3 MPLS VPN are true？（）
Which option is not a valid method to assign the lowest-order 64-bit field of an IPv6 unicast address？（）
Which four statements about Ethernet virtual circuit （EVC） infrastructure are true？ （）
Which three are advantages of SONET？（）
Assume that the PEs are separated by Multiple P routers.How many labels should the ingress PE push for BPE functionality？（）
Which two requirements to deploy 6PE and 6VPE solutions are mandatory？（）
Which statement about multicast VPN is true？（）
Which statement about implementing the Cisco IPv6 provider Edge Router over MPLS is true？（）
Which of the following is used to periodically multicast by DIS on a LAN to ensure IS-IS link state databaseaccuracy？（）
How many messages does internet Key Exchange use to negotiate SA characteristics when running inmain mode？（）