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MPLS包头中有（）Bit的EXP，协议中没有明确，通常用作COS。
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更多 “填空题MPLS包头中有（）Bit的EXP，协议中没有明确，通常用作COS。” 相关考题
考题
In which two ways can you influence how downstream LSRs treat MPLS traffic?()
A. Use an EXP rewrite table.B. Use a DSCP rewrite table.C. Statically assign a CoS value to an LDP-signaled LSP.D. Statically assign a CoS value to an RSVP-signaled LSP.
考题
如下描述中,QOS对于MPLS标签中EXP字段的处理的原则正确的是()
A.给IP报文封装MPLS标签时，直接将IP报文的TOS字段转换成MPLS标签的EXP字段B.标签交换（swap）操作时，EXP字段保持不变C.标签压栈（push）操作时，新压入的外层标签EXP字段继承内层标签的EXP字段D.标签弹栈（pop）操作时，如果弹栈之后是MPLS报文，不会将弹出标签的EXP字段复制到内层标签上；如果弹栈之后为IP报文，不会将EXP字段复制到IP报文的TOS字段
考题
通常,MPLS包头中有()Bit用作标签(Label);3个Bit的EXP,协议中没有明确,通常用作COS;1个Bit的S,用于标识是否是栈底,表明MPLS的标签可以嵌套;8个Bit的TTL。
A.16B.19C.20D.24
考题
Which two QoS classification and marking statements are true？ （）A、 In a Frame Relay network， delay sensitive traffic is tagged with the discard eligible （DE） bit.B、 In an MPLS network， the three most significant bits of the DSCP or the IP precedence of the IP packet are copied into the MPLS EXP field.C、 In an MPLS network， the MPLS EXP bits are used to identify up to 16 CoS values.D、 The differentiated services code point （DSCP） field consists of the first three bits of the IP precedence field in the header of an IP packet.E、 The 802.1Q standard uses a three bit field referred to as the user priority bits （PRI） to mark packets as belonging to a specific CoS.
考题
Which two QoS classification and marking statements are true？（）A、 In a Frame Relay network， delay sensitive traffic is tagged with the discard eligible （DE） bit.B、 In an MPLS network， the three most significant bits of the DSCP or the IP precedence of the IP packet are copied into the MPLS EXP fieldC、 In an MPLS network， the MPLS EXP bits are used to identify up to 16 CoS values.D、 The differentiated services code point （DSCP） field consists of the first three bits of the IP precedence field in the header of an IP packet.E、 The 802.10 standard uses a three bitfield referred to as the user priority bits （PRI） to mark packets as belonging to a specific CoS.
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将数学表达式Cos2（a+b）+3e2写成VB的表达式，其正确的形式是（）。A、Cos（a+b)^2+3*exp（2）B、Cos^2（a+b)+3*exp（2）C、Cos（a+b)^2+3*ln（2）D、Cos^2（a+b)+3*ln（2）
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下列代数式的Visual Basic表达式是（）。A、（x^5-cos（29*3.14/180））/（sqr（exp（x）+log（y）+5））B、（x^5-cos（29））/（sqr（exp（x）+ln（y））+5）C、（x^5-cos（29*3.14/180））/（sqr（exp（x）+ln（y））+5）D、（x^5-cos（0.506））/（sqr（exp（x）+log（y））+5）
考题
Which of the following is true about the MPLS header and its EXP field size？（）A、The MPLS header is 2 bytes，and the EXP field is 3 bits long.B、The MPLS header is 1 byte，and the EXP field is 3 bits long.C、The MPLS header is 4 bytes，and the EXP field is 3 bits long.D、The MPLS header is 3 bytes，and the EXP field is 3 bits long.
考题
通常，MPLS包头中有（）Bit用作标签（Label）；3个Bit的EXP，协议中没有明确，通常用作COS；1个Bit的S，用于标识是否是栈底，表明MPLS的标签可以嵌套；8个Bit的TTL。A、16B、19C、20D、24
考题
多选题Which two QoS classification and marking statements are true？（）AIn a Frame Relay network， delay sensitive traffic is tagged with the discard eligible （DE） bit.BIn an MPLS network， the three most significant bits of the DSCP or the IP precedence of the IP packet are copied into the MPLS EXP fieldCIn an MPLS network， the MPLS EXP bits are used to identify up to 16 CoS values.DThe differentiated services code point （DSCP） field consists of the first three bits of the IP precedence field in the header of an IP packet.EThe 802.10 standard uses a three bitfield referred to as the user priority bits （PRI） to mark packets as belonging to a specific CoS.
考题
多选题In which two ways can you influence how downstream LSRs treat MPLS traffic?（）AUse an EXP rewrite table.BUse a DSCP rewrite table.CStatically assign a CoS value to an LDP-signaled LSP.DStatically assign a CoS value to an RSVP-signaled LSP.
考题
单选题下列代数式的Visual Basic表达式是（）。A
（x^5-cos（29*3.14/180））/（sqr（exp（x）+log（y）+5））B
（x^5-cos（29））/（sqr（exp（x）+ln（y））+5）C
（x^5-cos（29*3.14/180））/（sqr（exp（x）+ln（y））+5）D
（x^5-cos（0.506））/（sqr（exp（x）+log（y））+5）
考题
多选题Which three statements about classification marking of traffic at Layer 2 are true？ （）Aa Frame Relay header includes a 1-bit discard eligible （DE） bit to provide the class of service （CoS）Ban ATM header includes a 1-bit DE field to provide the CoSCan MPLS EXP field is inserted in the Layer 3 IP precedence field to identify the CoSDthe CoS field only exists inside Ethernet frames when 802.1Q or Inter-Switch Link （ISL） trunking is usedEin the IEEE 802.1p standard， three bits are used to identify the user priority bits for the CoSFin the IEEE 802.1q standard， six bits are used to identify the user priority bits for the CoS
考题
单选题Which of the following is true about the MPLS header and its EXP field size？（）A
The MPLS header is 2 bytes，and the EXP field is 3 bits long.B
The MPLS header is 1 byte，and the EXP field is 3 bits long.C
The MPLS header is 4 bytes，and the EXP field is 3 bits long.D
The MPLS header is 3 bytes，and the EXP field is 3 bits long.
考题
多选题Which two QoS classification and marking statements are true？ （）AIn a Frame Relay network， delay sensitive traffic is tagged with the discard eligible （DE） bit.BIn an MPLS network， the three most significant bits of the DSCP or the IP precedence of the IP packet are copied into the MPLS EXP field.CIn an MPLS network， the MPLS EXP bits are used to identify up to 16 CoS values.DThe differentiated services code point （DSCP） field consists of the first three bits of the IP precedence field in the header of an IP packet.EThe 802.1Q standard uses a three bit field referred to as the user priority bits （PRI） to mark packets as belonging to a specific CoS.
考题
多选题如下描述中，QOS对于MPLS标签中EXP字段的处理的原则正确的是（）A给IP报文封装MPLS标签时，直接将IP报文的TOS字段转换成MPLS标签的EXP字段B标签交换（swap）操作时，EXP字段保持不变C标签压栈（push）操作时，新压入的外层标签EXP字段继承内层标签的EXP字段D标签弹栈（pop）操作时，如果弹栈之后是MPLS报文，不会将弹出标签的EXP字段复制到内层标签上；如果弹栈之后为IP报文，不会将EXP字段复制到IP报文的TOS字段
考题
多选题In which two ways can you influence how downstream LSRs treat MPLS traffic？（）AUse an EXP rewrite table.BUse a DSCP rewrite table.CStatically assign a CoS value to an LDP-signaled LSPDStatically assign a CoS value to an RSVP-signlated LSP
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