单项选择题

A.Network management layerB.Element management layerC.B……

What layer of the TMN （telecommunications management network） model does CTM fit into？（）

A.Network management layer
B.Element management layer
C.Business management layer
D.Network element layer

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热门试题

单项选择题WhatfeaturessetismostfrequentlyusedtopreventhackersfromfloodingaportwithMAC-addresses？（）

A.BPDU Guard
B.802.x
C.Port Security
D.Storm Control

单项选择题ATT（Attached）bitneedstobesetinthelinkstatePDUsinanIS-ISlevel-1-2routertoindicatethattheyareapotentialexitpointoutofthearea.（）

A.True
B.False

单项选择题Whatisthestatisticalreserve？（）

A.Bandwidth that is reserved for SVCs to route over a trunk
B.Bandwidth that is reserved on a trunk so that ABR connections can burst
C.Bandwidth on a trunk that is reserved for control traffic and cannot be used by connections
D.Bandwidth that cannot be allocated to connections but can be used to accommodate statistical variations in the traffic

单项选择题WhatisTCI？（）

A.Tag Calling Interface
B.Tag Control Identifier
C.ToS Class Interface
D.Tag Control Information

多项选择题Inwhichmodesdoesselectivepacketdiscard（SPD）operate？（）

A.normal
B.discard
C.random
D. full