ATM中的CBR（constant bit rate）模拟的是（）业务A、报文交换B、分组交换C、电路交换D、时分交换
ATM中的CBR（constant bit rate）模拟的是（）业务
- A、报文交换
- B、分组交换
- C、电路交换
- D、时分交换
相关考题：
ATM(异步传输模式)网络所采用的多路技术是(188)，如果它的数据速率为155.5Mb/s，这样每秒大约可以传送(189)万个信元。ATM是为B-ISDN定义的传输和交换方式，可以适应各种不同特性的电信业务，CBR(Constant Bit Rate)模拟(190)业务，适用这种业务的ATM适配层是(191)，用于ATM局域网仿真的ATM适配层是(192)。A．统计时分B．同步时分C．频分D．码分
You would like to configure an ATM PVC with a virtual circuit identifier of 33 on virtual path 0.The PVC should use an unspecified bit rate and be encapsulated in the AAL5SNAP format.Which command accomplishes this goal？（）A.atm pvc0/33 aal5snapB.atm pvc33033 aal5snapC.atm pvc0/33 aal5snap ubrD.atm pvc33033 aal5snap ubr
ATM网络采用(11)多路技术传送信元，典型的数据速率为155.5Mbit/s，这样每秒大约可以传送(12)万个信元。采用短的、固定长度的信元，为使用硬件进行高速数据交换创造了条件。ATM是为B-ISDN定义的传输和交换方式，可以适应各种不同特性的电信业务，CBR(Constant Bit Rate)模拟(13)业务，适用这种业务的ATM适配层是(14)，用于ATM局域网仿真的ATM适配层是(15)。A．统计时分B．同步时分C．频分D．码分
下列关于ATM业务服务质量从高到低的排序,正确的是()。 A.CBR ABR rt-VBR nrt-VBR UBRB.rt-VBR nrt-VBR CBR ABR UBRC.CBR rt-VBR nrt-VBR ABR UBRD.Rt-VBR CBR nrt-VBR UBR ABR
You are making a sharp turn in a channel and using a buoy four points on the bow to gauge your rate of turn．If you observe the buoy moving aft relative to you，what should you do ________．A.Increase the rate of turnB.Decrease the rate of turnC.Maintain a constant rate of turnD.Decrease speed
If you are bunkering and you close off one tank in the line of tanks being filled，the rate of flow to other open tanks on the same line will ______．A.increaseB.decreaseC.stopD.remain constant
UMG8900支持ATM承载的业务类型包括（）。A、rt-VBR（real-time Variable Bit Rate）B、ABR（Available bit rate）C、CBR（Constant Bit Rate）D、UBR（Unspecified Bit Rate）E、nrt-VBR（noreal-time Variable Bit Rate）
You would like to configure an ATM PVC with a virtual circuit identifier of 33 on virtual path 0.The PVC should use an unspecified bit rate and be encapsulated in the AAL5SNAP format.Which command accomplishes this goal？（）A、atm pvc0/33 aal5snapB、atm pvc33033 aal5snapC、atm pvc0/33 aal5snap ubrD、atm pvc33033 aal5snap ubr
下列关于ATM 业务服务质量从高到低的排序，正确的是（） A、 CBR ABR rt-VBR nrt-VBR UBRB、 rt-VBR nrt-VBR CBR ABR UBRC、 CBR rt-VBR nrt-VBR ABR UBRD、 Rt-VBR CBR nrt-VBR UBR ABR
通过命令ADD PVCTRF配置流量参数表，增加PVC时指定连接所使用的流量参数不支持的业务类别有（）。A、rt-VBR（real-time Variable Bit Rate）B、CBR（Constant Bit Rate）C、UBR（Unspecified Bit Rate）D、PBR（Pead Bit Rate）
What is the advantage of using DTX for an MS? （）A、Increases battery lifeB、Better Bit Error Rate (BQRE)C、Higher strengthD、Increased bit rateE、Better voice quality
Pick the 4 valid ATM Cell Header fields：（）A、GFC-4 bits of generic flow controlB、Forward-explicit congestion notification（FECN）C、VCI-16 bits of virtual channel identifierD、CLP-1 bit of congestion lossE、HEC-8 bit of header error controlF、ATM Discard Eligibility（DE）bit
单选题You are making a sharp turn in a channel and using a buoy four points on the bow to gauge your rate of turn.If you observe the buoy moving aft relative to you，what should you do（）.AIncrease the rate of turnBDecrease the rate of turnCMaintain a constant rate of turnDDecrease speed
单选题Which of the statements listed concerning heat transfer is correct?（）AHeat is always transferred at a constant rateBHeat transfer rate increases as temperature difference increasesCThe rate of heat transfer is not affected by temperature differenceDThe high temperature region is known as a heat sink
单选题The rate of heat transfer between the hot and cold fluids passing through a shell-and-tube type heat exchanger will （）.Aremain constant along the tubes lengthBbe greatest in a single pass counter flow heat exchangerCremain constant throughout the heat exchangerDvary from section to section through out the heat exchanger
单选题If you are bunkering and you close off one tank in the line of tanks being filled，the rate of flow to other open tanks on the same line will（）.AincreaseBdecreaseCstopDremain constant
单选题When a router is connected to a Frame Relay WAN link using a serial DTE interface, how is the interface clock rate determined?（）AIt is supplied by the CSU/DSU.BIt is supplied by the far end router.CIt is determined by the clock rate command.DIt is supplied by the Layer 1 bit stream timing.