单项选择题

TheclassicSpanningTreeProtocol（802.1D1998）useswhichsequ……

The classic Spanning Tree Protocol （802.1 D 1998） uses which sequence of variables to determine thebest received BPDU？（）

A.1） lowest root bridge id，2） lowest sender bridge id，3） lowest port id，4） lowest root path cost
B.1） lowest root path cost，2） lowest root bridge id，3） lowest sender bridge id，4） lowest sender port id
C.1） lowest root bridge id，2） lowest sender bridge id，3） lowest root path cost，4） lowest sender port id
D.1） lowest root bridge id，2） lowest root path cost，3） lowest sender bridge id，4） lowest sender port id

<上一题目录下一题>

热门试题

单项选择题WhichofthesebestdescribestheactionstakenwhenaVTPmessageisreceivedonaswitchconfiguredwiththeVTPmode transparent ？（）

A.VTP updates are ignored and forwarded out all ports.
B.VTP updates are ignored and forwarded out trunks only.
C.VTP updates are made to the VLAN database and are forwarded out trunks only.
D.VTP updates are ignored and are not forwarded.

单项选择题WhenSTPUplinkFastisenabledonaswitchutilizingthedefaultbridgepriority，whatwillthenewbridgeprioritybechangedto？（）

A.8192
B.16384
C.49152
D.65535

多项选择题WhichtwooftheseareusedintheselectionofarootbridgeinanetworkutilizingSpanningTreeProtocolIEEE802.1D？（）

A.Designated Root Cost
B.bridge ID priority
C.max age
D.bridge ID MAC address
E.Designated Root Priority
F.forward delay

单项选择题SpanningTreeProtocolIEEE802.1sdefinestheabilitytodeploywhichofthese？（）

A.one global STP instance for all VLANs
B.one STP instance for each VLAN
C.one STP instance per set of VLANs
D.one STP instance per set of bridges

单项选择题TworoutersconfiguredtorunBGPhavebeenconnectedtoafirewall，oneontheinsideinterfaceandone ontheoutsideinterface.BGPhasbeenconfiguredsothetworoutersshouldpeer，includingthecorrectBGPsessionendpointaddressesandthecorrectBGPsessionhop-countlimitEBGPmultihop.WhatisagoodfirsttesttoseeifBGPwillworkacrossthefirewall？（）

A.Attempt to TELNET from the router connected to the inside of the firewall to the router connected to theoutside of the firewall. If telnet works， BGP will work， since telnet and BGP both use TCP to transportdata.
B.Ping from the router connected to the inside interface of the firewall to the router connected to theoutside interface of the firewall. If you can ping between them， BGP should work， since BGP uses IP totransport packets.
C.There is no way to make BGP work across a firewall without special configuration， so there is no simpletest that will show you if BGP will work or not， other than trying to start the peering session.
D.There is no way to make BGP work across a firewall.