單項選擇題When configuring Multicast VPN (MVPN) over an MPLS core, both the Default and Data MDT isconfigured under which configuration mode?()

A.router(config)#
B.router(config-if)#
C.router(config-vrf)#
D.router(config-router)#
E.router(config-router-af)#


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1.多項選擇題Which two statements best describe EtherChannel?()

A.EtherChannel technology helps aggregate traffic grouping multiple,full-duplex point-to-point linkstogether
B.EtherChannel technology is based on the 802.1 IEEE stand
C.EtherChannel can aggregate up to 800 Mbps,8 Gbps,or Gbps of aggregate bandwidth for a Fast EtherChannel,Gigabit EtherChannel,or 10 Gigabit EtherChannel connection respectively
D.EtherChannel is defined for Rapid Spanning Tree for faster convergence

2.單項選擇題RFC 3270 describes Differentiated Services (Diff-Serv) over Multi-Protocol Label Switching (MPLS)networks. Which model alters Differentiated Services (Diff-Serv) code points set in different DifferentiatedServices (Diff-Serv) domain?()

A.Uniform model
B.Pipe Model
C.Short Pipe
D.None of the above will alter Differentiated Services(Diff-Serv)code points set in different DifferentiatedServices(Diff-Serv)domain

3.多項選擇題Identify the differences of option 10A, as opposed to option 10C, for interAS vpn offerings. For option 10A().

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

4.單項選擇題Which option describes the incorrect usage of the Label Distribution method?()

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.

5.單項選擇題Select the statement that best describes The cure for Amplification Principle in the Internetdomain, as explained in RFC 3429 (Internet Architectural Guidelines )()?

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

6.多項選擇題In which of the following BGP-related events is an End-of-RIB (EOR) message sent?()

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

7.單項選擇題VoIP bearer traffic is typically marked to which DSCP value?()

A.cs3
B.cs7
C.ef
D.af41
E.af31
F.0(default)

8.多項選擇題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

9.單項選擇題A network administrator wants to detect a login attack against a router. What IOS command can make the attack recorded in syslog server?()

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

10.多項選擇題Pick the 4 valid ATM Cell Header fields:()

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