單項選擇題Which of the following is used to periodically multicast by DIS on a LAN to ensure IS-IS link state databaseaccuracy?()

A.CSNP
B.LSP
C.ISH
D.Hello
E.IIH
F.PSNP


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1.單項選擇題MPLS label mapping on an LSR is displayed by which IOS command?()

A.Show mpls Idp neighbor detail
B.Show mpls Idp bindings
C.Show mpls Idp parameters
D.Show mpls Idp discovery

2.多項選擇題Which three protocols use TLVs to carry attributes?()

A.Cisco Discovery Protocol
B.Label Discovery Protocol
C.Border Gateway Protocol
D.OSPF
E.RIP version 2

4.多項選擇題What are three common reasons for ATM CRC errors?()

A.Incorrect VPI and VCI configuration
B.Noise, gain hits, or other transmission problems on the data link equipment
C.ATM cells are dropped due to incorrect ATM routing in the service provider.
D.A faulty or failing ATM interface.
E.Cells are dropped due to traffic policing in the ATM cloud on one or more virtual circuits attached to theATM interface

6.多項選擇題Which three things are the building blocks of the Cisco VPLS architecture?()

A.VLAN Trunk Protocol (VTP)
B.State Synchronization Protocol (SSP)
C.L2VPN
D.Ethernet Virtual Switch Interface (VSI)
E.Label Distribution Protocol (LDP)

8.多項選擇題Which tree of these are types of Ethernet Virtue Connections (EVCs) in the MEF concept?()

A.multipart-to-multipoint EVC (E-LAN)
B.hub spoke EVC (E-Tree)
C.point to point EVC (E-Line)
D.rooted multipoint EVC (E-Tree)
E.point-to-multipoint EVC (E-Tree)

9.多項選擇題Which three statements about MPLS traffic engineering (MPLS TE) are true? ()

A.MPLS TE supports admission control
B.MPLS TE tunnel traffic is a link attribute to compute the TE tunnel path
C.MPLS TE uses BGP extension to advertise link attributes
D.MPLS TE provides protection capability
E.MPLS TE uses RSVP to establish LSP

10.多項選擇題Which three are advantages of SONET?()

A.Allows the transportation of all forms of traffic
B.Multiplexing is easy
C.Clocks do not need to be synchronized
D.Reduces network complexity and cost
E.Padding is not necessary and not permitted

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