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单选题
What is periodically multicasted （every 10 seconds） by the DIS on a LAN to ensure IS-IS Link StateDatabase accuracy？（）
A
PSNP
B
CSNP
C
LSP
D
IIH
E
ISH
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单选题What is periodically multicasted （every 10 seconds） by the DIS on a LAN to ensure IS-IS Link StateDatabase accuracy？（）A
PSNPB
CSNPC
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IIHE
ISH
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单选题For a given Ethernet network， the failure cycle is set to 5 seconds and the heartbeat rate is set to 2 seconds.Given these values， what is the failure detection time for the network （in seconds）？（）A
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考题
单选题What is the recommended practice regarding UDLD when implementing it in all fiber-optic LAN ports?（）A
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Adjust the default hello timers to three seconds for aggressive modeB
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Enable it to create channels containing up to eight parallel links between switches
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