Serialization delay and(71)delay are the two components of network delay that are improved by increasing bandwidth. Serialization delay, i.e. the amount of time it takes to put the(72)on the wire, and queuing delay(depth of the queue)are improved by increasing the(73)from a 128Kbps circuit to a THowever, three other components of delay, routing/switching deiay, distance delay, and protocol delay are components that can not be positively affected by an(74)in bandwidth. If the circuits are not over-utilized, then increasing the bandwidth to improve the(75)of the application will only result in an increased bandwidth with no positive effects on performance.A．bufferingB．queuingC．receivingD．timing
Serialization delay and(71)delay are the two components of network delay that are improved by increasing bandwidth. Serialization delay, i.e. the amount of time it takes to put the(72)on the wire, and queuing delay(depth of the queue)are improved by increasing the(73)from a 128Kbps circuit to a THowever, three other components of delay, routing/switching deiay, distance delay, and protocol delay are components that can not be positively affected by an(74)in bandwidth. If the circuits are not over-utilized, then increasing the bandwidth to improve the(75)of the application will only result in an increased bandwidth with no positive effects on performance.
A．buffering
B．queuing
C．receiving
D．timing
相关考题：
● Serialization delay and （71） delay are the two components of network delay that are improved by increasing bandwidth. Serialization delay, i.e. the amount of time it takes to put the （72） on the wire, and queuing delay (depth of the queue) are improved by increasing the （73） from a 128Kbps circuit to a T1. However, three other components of delay, routing/switching delay, distance delay, and protocol delay are components that can not be positively affected by an （74） in bandwidth. If the circuits are not over-utilized, then increasing the bandwidth to improve the （75） of the application will only result in an increased bandwidth with no positive effects on performance.
WhichparameterorparametersareusedtocalculateOSPFcostinciscorouters?() A.Bandwidth，Delay，andMTUBB.andwidthC.BandwidthandMTUD.Bandwidth，MTU，Reliability，Delay，andLoad
网络的延迟（delay）定义了网络把数据从一个网络节点传送到另一个网络节点所需要的时间。网络延迟包括（）。A、传播延迟（propagation delay）B、交换延迟（switching delay）C、介质访问延迟（access delay）D、队列延迟（queuing delay）
What is the best description of serialization delay？ （）A、the time it takes for a Layer 3 switch or a router to switch a packet from an inbound interface to the queue of the outbound interfaceB、the time it takes for a propagate from source to destinationC、the time it takes to place a frame on the physical medium for transportD、the time a packet resides in the outbound queue of a router
在STR12-280机器人例程中，执行程序指令（）后可实现延时2.5s。A、delay_ms（25）；B、delay_ms（250）；C、delay_ms（2500）；D、delay_ms（25000）；
What is jitter？（）A、The total end-to-end delayB、The variations of delay.C、The delay caused by placing the bits on the wire.D、The time it takes for the bits to transit the physical media.
What are two ways to minimize the delay of VoIP packets that are traversing a network？（）A、Use WFQ， CBWFO， and LLO to prioritize delay-sensitive packetsB、Use WFO， CBWFO， and LLO to compress the payload.C、Give TCP packets priority over UDP packets.D、Use control plane policing for cRTP queuing.E、Use stacker and predictor to compress the payload.
You work as a network technician at. Your boss， Mrs. ， is interested in the Spanning Tree Protocol timers. What can you tell her regarding the default STP timers？ （）A、The hello time is 5 seconds.B、The forward delay is 10 seconds.C、The hello time is 2 seconds.D、The forward delay is 15 secondsE、The max_age timer is 15 seconds.F、The hello time is 10 seconds.G、The max_age timer is 20 seconds.H、The forward delay is 20 seconds.I、The max_age timer is 30 seconds.
关于过渡动画的延迟效果，设置正确的是（）。A、transition-delay：none；B、transition-delay：0.3s；C、transition-delay：-1s；D、transition-delay：500ms；
设置主接口由Up转Down后延迟30秒切换到备份接口，主接口由Down转Up后60秒钟切换回主接口的配置为（）A、backup 30 60B、backup delay 30 60C、backup delay 60 30D、backup delay enable-delay 30 disable-delay 60
Which two statements about the best effort model for QoS are true？（）A、delay sensitive packets are given preferential treatmentB、the default policy identifies a delay sensitive class and default classC、the default policy identifies a delay sensitive class， best effort class， and default classD、the model is highly scalableE、the model is still predominant on the internet F the model provides guaranteed service
Which three statements about end-to-end delay are true？（）A、End-to-end delay is the sum of propagation delays，processing delays，serialization delays，and queuing delays.B、Coast-to-coast end-to-end delay over an optical link is about 20 ms.C、Processing delay depends on various factors，which include CPU speed，CPU utilization，IP switching mode， and router architecture.D、Propagation and serialization delays are related to the media.E、Propagation delay is the time it takes to transmit a packet and is measured in bits-per-second （bps）.F、Serialization delay is the time it takes for a router to take the packet from an input interface and put it into the output queue of the output interface.
Which two statements are true about the application of QoS in a converged network？（）A、end-to-end network delay times that exceed 50 ms for real-time traffic are considered unacceptableB、end-to-end network delay times that exceed 250 ms for real-time traffic are considered unacceptableC、end-to-end network delay is not a factor as long as the delay is consistentD、some packet loss can be corrected by codec algorithmsE、RSVP handles voice packet retransmissionF、fragmentation is a result of packet loss
What are two major sources of delay that can be managed by QoS in voice-enabled networks？（）A、propagation delayB、voice packet serialization delayC、congested egress queuesD、header overheadE、packets dropped because of CRC errors
QoS refers to the ability of a network to provide improved service， over various underlying technologies， to select network traffic. Which two traits are inherent to QoS？（）A、 reference to network ability to provide improved service to all network trafficB、 reduction in delay， jitter， and packet lossC、 equal handling of all packetsD、 support for real-time applicationsE、 best-effort actions
What are two ways to minimize the delay of VoIP packets that are traversing a network？ （）A、 Use WFQ， CBWFQ， and LLQ to prioritize delay-sensitive packets.B、 Use WFQ， CBWFQ， and LLQ to compress the payload.C、 Give TCP packets priority over UDP packets.D、 Use control plane policing for cRTP queuing.E、 Use stacker and predictor to compress the payload.
设置主接口由Up转Down后延迟30秒切换到备份接口，主接口由Down转Up后60秒钟切换回主接口的配置为（）A、backup 3060B、backup delay3060C、backup delay6030D、backup delay enable-delay 30 disable-delay 60
Adobepremiereprocs3中，声音特效主要有（）A、Echo、Delay、MixtureB、Fade、Delay、MixtureC、Echo、Fade、DelayD、Echo、Delay
多选题Which two statements are true about the application of QoS in a converged network？（）Aend-to-end network delay times that exceed 50 ms for real-time traffic are considered unacceptableBend-to-end network delay times that exceed 250 ms for real-time traffic are considered unacceptableCend-to-end network delay is not a factor as long as the delay is consistentDsome packet loss can be corrected by codec algorithmsERSVP handles voice packet retransmissionFfragmentation is a result of packet loss
多选题Which three statements about end-to-end delay are true？ （）AEnd-to-end delay is the sum of propagation delays， processing delays， serialization delays， and queuing delays.BCoast-to-coast end-to-end delay over an optical link is about 20 ms.CProcessing delay depends on various factors， which include CPU speed， CPU utilization， IP switching mode， and router architecture.DPropagation and serialization delays are related to the media.EPropagation delay is the time it takes to transmit a packet and is measured in bits-per-second （bps）.FSerialization delay is the time it takes for a router to take the packet from an input interface and put it into the output queue of the output interface.
问答题Practice 1 ● Recently, your company has received a letter complaint concerning the delay of an order. As the manager of the Department of Customer Service, you are to handle this. ● Write the letter to the customer: ● explaining the reason for the delay, ● apologizing for the delay, ● offering some measures to make up for the delay.
单选题What is the best description of serialization delay？ （）Athe time it takes for a Layer 3 switch or a router to switch a packet from an inbound interface to the queue of the outbound interfaceBthe time it takes for a propagate from source to destinationCthe time it takes to place a frame on the physical medium for transportDthe time a packet resides in the outbound queue of a router
单选题What is jitter？（）AThe total end-to-end delayBThe variations of delay.CThe delay caused by placing the bits on the wire.DThe time it takes for the bits to transit the physical media.
多选题What are two major sources of delay that can be managed by QoS in voice-enabled networks？（）Apropagation delayBvoice packet serialization delayCcongested egress queuesDheader overheadEpackets dropped because of CRC errors