多項(xiàng)選擇題he network administrator is trying to add Switch1 to the network, but the 802.1Q trunk is not  coming up. Switch1 was previously tested in the laboratory and its trunk configuration worked fine.  What are three possible causes of this problem?()

A.The trunking configuration mode on Switch1 is set to Off.
B.The trunking configuration mode on the other end is set to On.
C.The trunking configuration mode on the other end is set to Desirable.
D.Cisco Discovery Protocol is not running on the other end.
E.There is a VTP domain name mismatch.
F.Switch1 does not support 802.1Q


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A.BGP peers must be Layer 2-adjacent.
B.EBGP multihop is not configured.
C.The firewall is not configured to allow IP protocol 89.
D.The firewall is not configured to allow UDP 179.

4.單項(xiàng)選擇題panning Tree Protocol calculates path cost based on which of these?()

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B.interface delay
C.interface bandwidth and delay
D.hop count
E.bridge priority

5.單項(xiàng)選擇題An expanding company is deploying leased lines between its main site and two remote sites. The bandwidth of the leased lines is 128kb/s each, terminated on different serial interfaces on the main router. These links are used for combined VOIP and data traffic. The network administrator has implemented a VOIP solution to reduce costs, and has therefore reserved sufficient bandwidth in a low latency queue on each interface for the VOIP traffic. Users now complain about bad voice quality although no drops are observed in the low latency queue. What action will likely fix this problem?()

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D.enable Layer 2 fragmentation and interleaving on the links
E.enable Frame Relay on the links and send voice and data on different Frame Relay PVCs

6.多項(xiàng)選擇題Which two of these are used in the selection of a root bridge in a network utilizing Spanning Tree  Protocol IEEE 802.1D? ()

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

7.單項(xiàng)選擇題To troubleshoot network issues more accurately, milliseconds should be included in the syslog of the router. Which command will achieve this?()

A.service timestamps log datetimec msec
B.logging timestamps msec
C.syslog timestamps hour minute second miliseconds
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E.logging service timestamp msec

8.單項(xiàng)選擇題On a router that is configured with multiple IP SLA probes, which command can be used to manage the CPU load that was created by the periodic probing?()

A.ip sla monitor low-memory
B.ip sla group schedule
C.ip sla reaction-trigger
D.ip sla enable timestamp

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