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单选题
What is the typical marked DSCP value for a voice media packet in Voice over IP technology？（）
A
AF41
B
AF31
C
AF21
D
BE
E
EF
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With the DSCP value fo "101110"， what does the "11" in bits 1 and 2 indicate ？（）A、AF ClassB、Drop ProbabilityC、CS（Class Selector Value ）D、PHB （Per-Hop Behavior ）E、IP PrecedenceF、Queue Depth
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What is the typical marked DSCP value for a voice media packet in Voice over IP technology？（）A、AF41B、AF31C、AF21D、BEE、EF
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On the basis of the definitions of different services in various RFCs， traffic with Expedited Forwarding per-hop behavior should be marked as which of these？（）A、IP ToS of 0xEFB、IP experimental ECNC、DSCP decimal 5D、Binary value of 101110
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单选题What is the typical marked DSCP value for a voice signaling packet in VoIP technology？（）A
BEB
AF41C
AF21D
EFE
AF31
考题
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79xx IP phones do not automatically mark voice packets with non-zero DSCP values.B
79xx IP phones do not mark protocol packets such as DHCP， DNS， or TFTP with non-zero DSCP values.C
79xx IP phones do not mark voice packets with optimal DSCP values.D
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考题
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After two days， the backup will be marked obsolete.B
After two days， the backup will be deleted from the media.C
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If the RMAN repository has records of two or more recent backups of a file， then the older backup will be marked obsolete.
考题
单选题For acceptable voice calls, the packet error rate should be no higher than what value?（）A
0.1%B
1%C
2.5%D
25%
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单选题Which line contains a constructor in this class definition？（） public class Counter { // （1） int current， step； public Counter（int startValue， int stepValue） { // （2） set（startValue）； setStepValue（stepValue）； } public int get（） { return current； } // （3） public void set（int value） { current = value； } // （4） public void setStepValue（int stepValue） { step = stepValue； } // （5） }A
Code marked with （1） is a constructorB
Code marked with （2） is a constructorC
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Code marked with （4） is a constructorE
Code marked with （5） is a Constructor
考题
单选题With the DSCP value fo "101110"， what does the "11" in bits 1 and 2 indicate ？（）A
AF ClassB
Drop ProbabilityC
CS（Class Selector Value ）D
PHB （Per-Hop Behavior ）E
IP PrecedenceF
Queue Depth
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data marked with DSCP AF21，VOIP marked with DSCP EFB
data marked with DSCP AF51，VOIP marked with DSCP EFC
data marked with the DE-bit. VOIP marked with the CLP-bitD
data marked with DSCP EF，VOIP marked with DSCP AF31E
data marked with IP precedence 5，VOIP marked with DSCP EF
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单选题What is the recommended Cisco DSCP value for a switch or router passing Cisco Unified Wireless IP Phone 7921G RTP packets?（）A
CS3B
CS1C
EFD
5E
6
考题
单选题VoIP bearer traffic is typically marked to which DSCP value？（）A
cs3B
cs7C
efD
af41E
af31F
0（default）
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data marked with DSCP AF21，VOIP marked with DSCP EFB
data marked with DSCP AF51，VOIP marked with DSCP EFC
data marked with the DE-bit，VOIP marked with the CLP-bitD
data marked with DSCP EF，VOIP marked with DSCP AF31E
data marked with IP precedence 5 VOIP marked with DSCP EF
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DTIM = 1B
DTIM = 2C
DTIM = 3D
DTIM = 4
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