單項(xiàng)選擇題How many messages does internet Key Exchange use to negotiate SA characteristics when running inmain mode?()

A.3 messages
B.6 messages
C.4 messages
D.2 messages
E.5 messages


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1.多項(xiàng)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

3.多項(xiàng)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)

5.多項(xiàng)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)

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