WhatisthefirststepinBGProuteselection?（）
A. Thelocalrouterpreferstheroutewiththeshortestas-path.
B. TherouterfirstverifiesthatithasaroutetothebgpNextHopIPaddress.
C. Thelocalrouterpreferstheroutefromthepeerwiththelowestpeeridaddress.
D. Thelocalrouterpreferstheroutelearnedfromanebgppeeroveraroutelearnedfromanibgppeer.
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WhichRIPmessagetypeisusedtodeliverrouteinformationtoneighbors?（）
A
B
C
D
WhataretwopurposesoftheAS_PATHattribute?（）
A. routeselection
B. loopavoidance
C. determiningequalcostpathsforreachablilty
D. definingtheapplicationofotherBGPattributes
AuserisconnectedonaDSLlineandisusingaPPPoverEthernetservice.WhichnetworkdevicestripstheATMheaderfromthedatagramandinvestigatesthePPPheader?（）
A. DSLAM
B. DSLmodem
C. ERXEdgeRouter
D. customerworkstation
What is the administrative scoping address range associated with global scope？（）
A. 224.0.0.0/24
B. 239.128.0.0/10
C. 239.192.0.0/14
D. 224.0.1.0/38.255.255.255
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