The diffserv approach to providing QoS in networks employs a small,well-defined set of building blocks from which you can build a variety of( ).Its aim is to define the differentiated services(DS)byte,the Type of Service(ToS)byte from the Internet

题目
The diffserv approach to providing QoS in networks employs a small,well-defined set of building blocks from which you can build a variety of( ).Its aim is to define the differentiated services(DS)byte,the Type of Service(ToS)byte from the Internet Protocol Version 4(________)and the Traffic Class byte from IP Version 6,and mark the standardized DS byte of the packet such that it receives a particular forwarding treatment,or per- hop behavior(PHB),at each network node.The diffserv architecture provides a( )within which service providers can offer customers a range of network services,each differentiated based on performance.A customer can choose the( )level needed on a packet-by-packet basis by simply marking the packet's Differentiated Services Code Point(DSCP)field to a specific value.This ( ) specifies the PHB given to the packet within the service provider network。横线处应选（ ）

(72)A message B. Packet

C.header D. package


A. message
B. Packet
C.header
D.package
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更多“The diffserv approach to providing QoS in networks employs a small,well-defined set of building blocks from which you can build a variety of( ).Its aim is to define the differentiated service”相关问题

  • 第1题：

    The diffserv approach to providing QoS in networks employs a small, well-defined set of building blocks from which you can build a variety of( ). Its aim is to define the differentiated services (DS) byte, the Type of Service (ToS) byte from the Internet Protocol Version 4 ( )and the Traffic Class byte from IP Version 6, and mark the standardized DS byte of the packet such that it receives a particular forwarding treatment, or per-hop behavior (PHB), at each network node. The diffserv architecture provides a( )within which service providers can offer customers a range of network services, each differentiated based on performance. A customer can choose the ( )level needed on a packet-by-packet basis by simply marking the packet&39;s Differentiated Services Code Point (DSCP) field to a specific value.This ( ) specifies the PHB given to the packet within the service provider network.

    A.servicesB.UsersC.networksD.structuresA.messageB.PacketC.headerD.packageA.informationB.StructureC.meansD.frameworkA.performanceB.SecureC.privacyD.dataA. packetB.valueC.serviceD.paragraph


    正确答案：A,B,C,A,B

  • 第2题：

    The diffserv approach to providing QoS in networks employs a small,well-defined set of building blocks from which you can build a variety of( ).Its aim is to define the differentiated services(DS)byte,the Type of Service(ToS)byte from the Internet Protocol Version 4( )and the Traffic Class byte from IP Version 6,and mark the standardized DS byte of the packet such that it receives a particular forwarding treatment,or per- hop behavior(PHB),at each network node.The diffserv architecture provides a( )within which service providers can offer customers a range of network services,each differentiated based on performance.A customer can choose the(________ )level needed on a packet-by-packet basis by simply marking the packet's Differentiated Services Code Point(DSCP)field to a specific value.This ( ) specifies the PHB given to the packet within the service provider network。横线处应选（ ）


    A.performance
    B. Secure
    C. privacy
    D.data


    答案：A
    解析：
    在网络中提供QoS的差分服务应用了一种很小的明确定义的构建模块集合来建立各种服务。它的目的就是利用IPv4头部中的服务类型(ToS )和IPv6中的通信类型定义不同的服务字节(DS)，而且在每一个网络节点用分组的标准化DS字节来表示它接收到一种特殊的转发处理规则或每跳的行为(PHB)。差分服务体系结构提供了一种框架，使得可以为用户提供一定范围的网络服务，每种服务都有不同的性能。用户只要给分组的差分服务码点(DSCP)字段赋予特殊的值，就可以按照各个分组的需要选择性能级别。这个值说明了在服务提供的网络中给予分组的PHB 。

  • 第3题：

    Which QoS model manages the QoS requirements for the network on a per-hop behavior （PHB） basis？（）

    • A、best-effort delivery
    • B、ingress committed rate （ICR）
    • C、shaping and policing
    • D、egress committed rate （ECR）
    • E、Integrated Services （IntServ）
    • F、differentiated services （DiffServ）

    正确答案:F

  • 第4题：

    All of these are fundamental building blocks of a differentiated services Traffic Conditioner Block except which one？（）

    • A、dropper
    • B、classifier
    • C、marker
    • D、querier
    • E、meter
    • F、shaper

    正确答案:D

  • 第5题：

    QoS中通常有以下哪些服务模型（）。

    • A、Best Effort
    • B、FIFO（First Input First Output）
    • C、DiffServ（Differentiated Service）
    • D、IntServ（Integrated Service）

    正确答案:A,C,D

  • 第6题：

    Which two statements about the DiffServ QoS model are true？（）

    • A、DiffServ requires RSVP to set up a path through the network to accommodate the requested QoS.
    • B、Network traffic is identified by class， and the level of service is chosen for each class.
    • C、The DiffServ model relies on a fairly simple mechanism to provide QoS over a wide range of equipment.
    • D、RSVP enables the DiffServ model to provide end-to-end QoS.
    • E、The DiffServ model is more scalable than the IntServ model.
    • F、The flow-based approach of the DiffServ model is ideal for large scalable implementations such as the public Internet.

    正确答案:B,E

  • 第7题：

    You are building a client for a Windows Communication Foundation (WCF) service. You need to create a proxy to consume this service. Which class should you use?（）

    • A、ChannelFactory
    • B、 ServiceHost
    • C、ClientRuntime
    • D、CommunicationObject

    正确答案:A

  • 第8题：

    单选题
    All of these are fundamental building blocks of differentiated services Traffic Conditioner Block exceptwhich one？（）
    A

    dropper

    B

    classifier

    C

    marker

    D

    querier

    E

    meter

    F

    shaper


    正确答案： E
    解析： 暂无解析

  • 第9题：

    多选题
    Which two statements about the DiffServ QoS model are true？（）
    A

    DiffServ requires RSVP to set up a path through the network to accommodate the requested QoS.

    B

    Network traffic is identified by class， and the level of service is chosen for each class.

    C

    The DiffServ model relies on a fairly simple mechanism to provide QoS over a wide range of equipment.

    D

    RSVP enables the DiffServ model to provide end-to-end QoS.

    E

    The DiffServ model is more scalable than the IntServ model.

    F

    The flow-based approach of the DiffServ model is ideal for large scalable implementations such as the public Internet.


    正确答案： C,B
    解析： 暂无解析

  • 第10题：

    多选题
    Which three statements are true about the application of QoS models？ （）
    A

    The DiffServ model requires applications to signal the network with QoS requirements.

    B

    The DiffServ model can be used to deliver QoS based upon IP precedence， or source and destination addresses.

    C

    The DiffServ model requires RSVP.

    D

    The best effort model is suitable for applications such as file transfer and e-mail

    E

    The IntServ model requires applications to signal the network with QoS requirements.

    F

    The IntServ model attempts to deliver a level of service based on the QoS specified by each packet


    正确答案： A,C
    解析： 暂无解析

  • 第11题：

    单选题
    RFC 3270 describes Differentiated Services （Diff-Serv） over Multi-Protocol Label Switching （MPLS）networks. Which model alters Differentiated Services （Diff-Serv） code points set in different DifferentiatedServices （Diff-Serv） domain？（）
    A

    Uniform model

    B

    Pipe Model

    C

    Short Pipe

    D

    None of the above will alter Differentiated Services（Diff-Serv）code points set in different DifferentiatedServices（Diff-Serv）domain


    正确答案： A
    解析： 暂无解析

  • 第12题：

    单选题
    Which part of the text helps if you are angry about the Building Service?
    A

    HELP US TO HELP YOU

    B

    YOUR BUILDING SERVICE

    C

    WHAT YOU CAN DO IF THINGS GO WRONG


    正确答案： C
    解析：
    由文章最后一部分内容可得出答案。

  • 第13题：

    The Internet is based on connectionless end-to-end packet service, which traditionally provided best-effort means of data （请作答此空）using the Transmission Control Protocol/Internet Protocol Suite. Although the （ ）design gives the Internet its flexibility and robustness, its packet dynamics also make it prone to congestion problems,especially at （ ）that connect networks of widely different bandwidths.The initial QoS function set was for internet hosts.One major problem with expensive wide-area（ ）links is the excessive overhead due to small Transmission Control Protocol packets created by applications such as telnet and rlogin. The Nagle （ ），which solves this issue,is now supported by all IP host implementations.

    A.transformation
    B.transportation
    C.processing
    D.progressing

    答案：B
    解析：
    平时多积累专业词汇。

  • 第14题：

    Which three statements are true about the application of QoS models？ （）

    • A、 The DiffServ model requires applications to signal the network with QoS requirements.
    • B、 The DiffServ model can be used to deliver QoS based upon IP precedence， or source and destination addresses.
    • C、 The DiffServ model requires RSVP.
    • D、 The best effort model is suitable for applications such as file transfer and e-mail
    • E、 The IntServ model requires applications to signal the network with QoS requirements.
    • F、 The IntServ model attempts to deliver a level of service based on the QoS specified by each packet

    正确答案:B,D,E

  • 第15题：

    All of these are fundamental building blocks of differentiated services Traffic Conditioner Block exceptwhich one？（）

    • A、dropper
    • B、classifier
    • C、marker
    • D、querier
    • E、meter
    • F、shaper

    正确答案:D

  • 第16题：

    Which statement is true about the SDM QoS wizard and its ability to enable a QoS policy on router interfaces？（）

    • A、QoS can be enabled on interfaces used for Easy VPN clients
    • B、QoS can be enabled on IPsec VPN interfaces and tunnels
    • C、QoS can be enabled on interfaces with an existing QoS policy
    • D、the QoS policy can be enabled for incoming and outgoing traffic on the interface

    正确答案:B

  • 第17题：

    以下哪些不属于QoS中的服务模型（）

    • A、Best Effort
    • B、FIFO（First Input First Output）
    • C、DiffServ（Differentiated ServicE）
    • D、IntServ（Integrated ServicE）

    正确答案:B

  • 第18题：

    Which three statements are true about the appliance of QoS models？（）

    • A、the DiffServ model requires applications to signal the network with QoS requirements
    • B、the DiffServ model can be used to deliver QoS based upon IP precedence， or source and destination addresses
    • C、the DiffServ model requires RSVP
    • D、the best effort model is suitable for applications such as file transfer and e-mail
    • E、the IntServ model requires applications to signal the network with QoS requirements
    • F、the IntServ model model attempts to deliver a level of service based on the QoS specified by each packet

    正确答案:B,D,E

  • 第19题：

    A Windows Communication Foundation (WCF) service has a callback contract. You are developing a client application that will call this service.You must ensure that the client application can interact with the WCF service. What should you do?（）

    • A、On the OperationContractAttribute, set the AsyncPattern property value to true.
    • B、On the OperationContractAttribute, set the ReplyAction property value to the endpoint address of the client.
    • C、On the client, create a proxy derived from DuplexClientBase<TChannel >.
    • D、On the client, use GetCallbackChannel<T >.

    正确答案:C

  • 第20题：

    单选题
    All of these are fundamental building blocks of a differentiated services Traffic Conditioner Block except which one？（）
    A

    dropper

    B

    classifier

    C

    marker

    D

    querier

    E

    meter

    F

    shaper


    正确答案： C
    解析： 暂无解析

  • 第21题：

    多选题
    When policy - based routing (PBR) is being configured, which three criteria can the set command specify?（）
    A

    all interfaces in the path toward the destination

    B

    all networks in the path toward the destination

    C

    adjacent next hop router in the path toward the destination

    D

    all routers in the path toward the destination

    E

    all interfaces through which the packets can be routed

    F

    type of service and precedence in the IP packets


    正确答案： F,C
    解析： 暂无解析

  • 第22题：

    多选题
    Which three statements are true about the appliance of QoS models？（）
    A

    the DiffServ model requires applications to signal the network with QoS requirements

    B

    the DiffServ model can be used to deliver QoS based upon IP precedence， or source and destination addresses

    C

    the DiffServ model requires RSVP

    D

    the best effort model is suitable for applications such as file transfer and e-mail

    E

    the IntServ model requires applications to signal the network with QoS requirements

    F

    the IntServ model model attempts to deliver a level of service based on the QoS specified by each packet


    正确答案： F,C
    解析： 暂无解析

  • 第23题：

    单选题
    A Windows Communication Foundation (WCF) service has a callback contract. You are developing a client application that will call this service.You must ensure that the client application can interact with the WCF service. What should you do?（）
    A

    On the OperationContractAttribute, set the AsyncPattern property value to true.

    B

    On the OperationContractAttribute, set the ReplyAction property value to the endpoint address of the client.

    C

    On the client, create a proxy derived from DuplexClientBase<TChannel >.

    D

    On the client, use GetCallbackChannel<T >.


    正确答案： D
    解析： 暂无解析

  • 第24题：

    单选题
    Acknowledgement by you of receipt of a distress message from a vessel which，beyond any possible doubt，is not in your vicinity and is a long distance away must be made when（）.
    A

    Vessels nearer the distress vessel acknowledge receipt

    B

    Vessels nearer the distress vessel fail to acknowledge receipt

    C

    Even you have not reveived the distress

    D

    Even the vessel in distress expressly prohibit you from providing any salvage service


    正确答案： D
    解析： 暂无解析

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