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What is used to prevent ‘ping-pong effects’, that is, rapid, successive handovers? （）
- A、Discontinuous Transmission
- B、Hysteresis
- C、Dynamic Power Control
- D、Frequency Hopping
- E、Cell Load Sharing
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多选题RIP version 2 is being used as the routing protocol within the Testking network.What does RIP version 2 use to prevent routing loops?（）ACIDRBSplit horizonCAuthenticationDClassless maskingEHold-down timersFMulticast routing updatesGPath Vectoring
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单选题What features set is most frequently used to prevent hackers from flooding a port with MAC- addresses？（）A
BPDU GuardB
802.xC
Port SecurityD
Storm Control
考题
单选题What is the purpose of an explicit "deny any" statement at the end of an ACL？（）A
none，since it is implicitB
to enable Cisco IOS IPS to work properly；however，it is the deny all traffic entry that is actually requiredC
to enable Cisco IOS Firewall to work properly；however，it is the deny all traffic entry that is actually requiredD
to allow the log option to be used to log any matchesE
to prevent sync flood attacksF
to prevent half-opened TCP connections
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多选题What are two QoS mechanisms that are used to prevent packet loss？（）Aheader compressionBpayload compressionClow latency queuing （LLQ）Dweighted random early detection （WRED）Etraffic policingFtraffic shaping
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单选题What is the purpose of configuring router R1 with the "IP Helper address" command？（）A
IP Helper is used to direct BOOTP clients to a BOOTP serverB
IP Helper is used to prevent the router form forwarding IP broadcastsC
IP Helper is used to allow IPX clients to communicate with IP-based serversD
IP Helper is used to accommodate compatibility routers using different IP routing protocolsE
None of the other alternatives apply
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单选题What is the Flush Input Buffer setting used for in the Input tab of the Menu step?（）A
to release memory held by the prompt variable B
to clear the value of the menu choice before the prompt is played C
to prevent the previous value from being used again on the menu choice D
to prevent the caller from entering a menu choice before the prompt has played
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