多項(xiàng)選擇題Which three are optional extensions of the Frame Relay Local Management Interface specification？（）

A.switched virtual circuit
B.virtual circuit status
C.simple flow control
D.multicasting
E.permanent virtual circuit


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1.多項(xiàng)選擇題In the Carrier Support Carrier （CsC） feature， which two protocols run CSC-PE and CSC-CS ？（）

A.EBGPv4 with a sending community
B.IGP and LDP
C.EBGPv4 with a sending label
D.IGP and EBGPv4
E.IGP and RSVP

2.單項(xiàng)選擇題Which statement about standard STS-1 SONET framing is true？（）

A.8 rows by 64 bytes
B.6 rows by 64 bytes
C.10 rows by 96 bytes
D.8 rows by 128 bytes
E.9 rows by 90 bytes

3.單項(xiàng)選擇題What is the default BGP scanner time？（）

A.10 minutes
B.5 minutes
C.120 seconds
D.60 seconds
E.30 minutes

5.多項(xiàng)選擇題Which three of these can be a forwarding equivalence class？ （）

A.IPsec tunnel
B.routing equivalence paths
C.traffic engineering tunnel
D.bridge or switch instance
E.groups of IP addresses