单选题A transport layer protocol has several responsibilities, One is to create a process-to-process (program-to-program) communication; TCP uses port (1) to accomplish this. Another responsibility of a transport layer protocol is to create a (2) and error-

题目
单选题
A transport layer protocol has several responsibilities, One is to create a process-to-process (program-to-program) communication; TCP uses port (1) to accomplish this. Another responsibility of a transport layer protocol is to create a (2) and error-control mechanism at the transport level. TCP uses a sliding (3) protocol to achieve flow control. It uses the acknowledgment packet, time-out, and retransmission to achieve (4) control. The transport layer is also responsible for providing a connection mechanism for the application program. The application program sends (5) of data to the transport layer. It is the responsibility of the transport layer at the sending station to make a connection with the receiver. 空白（2）处应选择（）
A

procedure

B

function

C

route

D

flow

相似考题

1.● A transport layer protocol has several responsibilities. One is to create a process-to-process (program-to-program) communication; TCP uses port （71） to accomplish this. Another responsibility of a transport layer protocol is to create a （72） and error-control mechanism at the transport level. TCP uses a sliding （73） protocol to achieve flow control. It uses the acknowledgment packet, time-out, and retransmission to achieve （74） control. The transport layer is also responsible for providing a connection mechanism for the application program. The application program sends （75） of data to the transport layer. It is the responsibility of the transport layer at the sending station to make a connection with the receiver.（71）A. numbersB. connectionsC. diagramsD. resources（72）A. procedureB. functionC. routeD. flow（73）A. pathB. windowC. frameD. diagram（74）A. packetB. timeC. errorD. phase（75）A. portsB. streamsC. packetsD. cells

2.● A glue that holds the whole Internet together is the network layer protocol,(71). Unlike most older network layer protocols, it was designed from the beginning with internetworking in mind. Its job is to provide a -(72) way to transport datagrams from source to destination, without regard to whether these machines are on the same network or whether there are other networks in between them.Communication in the Internet works as follows. The (73)layer takes data streams and breaks them up into datagrams. Each datagram is transmitted through the Internet, possibly being fragmented into smaller units as it goes. When all the pieces finally get to the destination machine, they are reassembled by the(74) layer into the original datagram. This datagram is then handed to the transport layer, which inserts it into the receiving process' input stream.An IP datagram consists of a header part and a text part. The header has a (75) part and a variable length optional part.(71) A. IP (Internet Protocol)B. IP (Interworking Protocol)C. TCP (Transport Control Protocol)D. TCP (Transfer Communication Protocol)(72) A. best-qualityB. quality-guaranteedC. connection-orientedD. best-efforts(73) A. data linkB. transportC. networkD. application(74) A. data linkB. transportC. networkD. application(75) A. 40-byte fixedB. 64-byte fixedC. 20~64 bytes variableD. 20-byte fixed

3.Which one of the following protocols uses both UDP and TCP ports for the transport layer operation?A．FTPB．TFTPC．SMTPD．TelnetE．DNS

4.Regarding DHCP (dynamic host configuration protocol), which two of the following choices below are true? (Select two answer choices)A. The DHCP Discover message uses FF-FF-FF-FF-FF as the Layer 2 destination address.B. The DHCP Discover message uses UDP as the transport layer protocol.C. The DHCP Discover message uses a special Layer 2 multicast address as the destination address.D. The DHCP Discover message uses TCP as the transport layer protocol.E. The DHCP Discover message does not use a Layer 2 destination address.F. The DHCP Discover message does not require a transport layer protocol.

更多“A transport layer protocol has several responsibilities, One”相关问题

  • 第1题：

    Networks can be interconnected by different devices in the physical layer networks can be connected by (71) or hubs．which just move the bits from one network to an identical network．One layer up we find bridges and switches which operate at data link layer．They can accept (72) ，examine the MAC address and forward the frames to a different network while doing minor protocol translation in the process in me network layer，we have routers that can connect two networks，If two networks have (73) network layer，the router may be able to translate betweenthe packer formats．In the transport layer we find transport gateway，which can interface between two transport connections Finally，in the application layer，application gateways translate message (74) ．As an example，gateways between Internet e-mail and X，400 e-mail must (75) thee-mail message and change various header fields．

    (68)

    A．reapers

    B．relays

    C．packages

    D．modems


    正确答案：A

  • 第2题：

    TCP/IP is a communication protocol, which provides many different networking services. The TCP/IP Internet protocol suite is formed from two standards: the TCP （Transmission Control Protocol） and the IP（Internet Protocol）.

    （72） means it is on the transport layer.

    A.ISO

    B.IP

    C.OSI

    D.TCP


    正确答案：D
    TCP/IP通信协议，它提供了许多不同的网络服务。TCP/IP网络协议是从两个标准的形成：TCP（传输控制协议）和IP（互联网协议）。（72）意味着它是在传输层。A.ISOB.IPC.OSID.TCP

  • 第3题：

    ● A transport layer protocol usually has several responsibilities. One is to create a process-to-process communication; UDP uses （71） numbers to accomplish this. Another responsibility is to provide control mechanisms at the transport level. UDP does this task at a very minimal level. There is no flow control mechanism and there is no （72） for received packet. UDP,however, does provide error control to some extent. If UDP detects an error in the received packet, it will silently drop it．

    The transport layer also provides a connection mechanism for the processes. The （73） must be able to send streams of data to the transport layer. It is the responsibility of the transport layer at （74） station to make the connection with the receiver, chop the stream into transportable units,number them, and send them one by one. It is the responsibility of the transport layer at the receiving end to wait until all the different units belonging to the same process have arrived, check and pass those that are （75） free, and deliver them to the receiving process as a stream.

    （71）A．hop B．port C．route D．packet

    （72）A．connection B．window C．acknowledgement D．destination

    （73）A．jobs B．processes C．programs D．users

    （74）A．sending B．routing C．switching D．receiving

    （75）A．call B．state C．cost D．error


    正确答案：B,C,B,A,D

  • 第4题：

    TCP/IP communication protocol contains four layers． From bottom to top, the four layers are __（71）__．

    A.network interface layer, internet layer, transport layer and application layer

    B.internet layer, network interface layer, transport layer and application layer

    C.network interface layer, transport layer, network interface layer and application layer

    D.application layer, transport layer, internet layer and network interface layer


    正确答案：A
    TCP/IP协议是当今世界上最流行的开放系统协议集，它正在支撑着Internet的正常运转。它由4层组成，由低到高依次为网络接口层．Internet层．传输层．应用层。

  • 第5题：

    根据下面的文字资料回答 71～75 题 connected by（ 1 ）or Hubs,which just move the bits from one network to an identical network. One layer up we find bridgas and swiehes,which operate at data link layer. They can accept （ 2 ） , examine the MAC address, and forward the frames to a different network while doing minor protocol translation in the process. In the network layer,we have touters that can connect two netwoks. If two networks have（ 3 ）network layer,the router may be able to translate between the packet formats. In the transport layer we find transport gateway, which cart interface between the two transport connections. Finally, in the application layer, application gateways translate message（ 4 ）. As an example,gateways between Internet e-mail and X.400 e-mail must （ 5 ）the e-mail message and change various header fields.

    第6题：文中（ 1 ）处正确的答案是（ ）。

    A．reapers

    B．relays

    C．connects

    D．modems


    正确答案：A

    网络可以用不同的设备互联。在物理层，用中继器或者集线器互联，这些设备只是在相同的网络之间传送比特串。在上面的数据链路层，可以使用网桥或者交换机，这些设备接收数据帧，检查MAC地址，并可以实瑰少量的协议转换，把数据帧转发到不同的网络中。在网络层，使用路由器连接两个网络。如果两个网络的网络层不同，路由器能够对分组格式进行转换。在传输层，使用传输网关，它可以在两个传输连接之间建立接口。最后，在应用层，应用网关实现消息语法之间的翻译。例如，在Internet邮件和X．400邮件之间的网关可以对邮件报文进行语法分析，对报文的各个头字段做出改变。

  • 第6题：

    Together with the network layer,the transport layer is the heart of the protocol ( 请作答此空).The network layer provides end-to-end () delivery using datagrams or virtual circuits.The transport layer builds on the network layer to provide data transport from a process on a () machine to a process on a destination machine with a desired level of reliability that is independent of the physical () currently in use.It provides the abstractions that applications nedd to use the network..Without the () layer,the whole concept of layered protocols would make little sense.

    A.transport
    B.network
    C.hierarchy
    D.service

    答案：C
    解析：

  • 第7题：

    The TCP protocol is a （ ） layer protocol.

    A.physical
    B.network
    C.transport
    D.application

    答案：C
    解析：
    TCP协议是传输层的协议。 A．物理 B．网络 C．传输 D．应用参考答案：C

  • 第8题：

    Which one of the following protocols uses both UDP and TCP ports for the transport layer operation?（）

    • A、FTP
    • B、TFTP
    • C、SMTP
    • D、Telnet
    • E、DNS

    正确答案:E

  • 第9题：

    Which three statements about firewall modes are correct？ （）

    • A、 A firewall in routed mode has one IP address
    • B、 A firewall in transparent mode has one IP address
    • C、 In routed mode， the firewall is considered to be a Layer 2 dew
    • D、 In routed mode， the firewall is considered to be a Layer 3 device
    • E、 In transparent mode， the firewall is considered to be a Layer 2 device
    • F、 In transparent mode， the firewall is considered to be a Layer 3 device

    正确答案:A,D,E

  • 第10题：

    Regarding DHCP (dynamic host configuration protocol), which two of the following choices below are true?（）

    • A、The DHCP Discover message uses FF-FF-FF-FF-FF as the Layer 2 destination address.
    • B、The DHCP Discover message uses UDP as the transport layer protocol.
    • C、The DHCP Discover message uses a special Layer 2 multicast address as the destination address.
    • D、The DHCP Discover message uses TCP as the transport layer protocol.
    • E、The DHCP Discover message does not use a Layer 2 destination address.
    • F、The DHCP Discover message does not require a transport layer protocol.

    正确答案:A,B

  • 第11题：

    单选题
    Which one of the following protocols uses both UDP and TCP ports for the transport layer operation?（）
    A

    FTP

    B

    TFTP

    C

    SMTP

    D

    Telnet

    E

    DNS


    正确答案： A
    解析： 暂无解析

  • 第12题：

    单选题
    Which of the following is a connection oriented transport layer protocol？ （）
    A

     TCP

    B

     UDP

    C

     TFTP

    D

     SNMP


    正确答案： B
    解析： 暂无解析

  • 第13题：

    ● TCP/IP communication protocol contains four layers. From bottom to top, the four layers are __(71)__.

    （71）A．network interface layer, internet layer, transport layer and application layer

    B．internet layer, network interface layer, transport layer and application layer

    C．network interface layer, transport layer, network interface layer and application layer

    D．application layer, transport layer, internet layer and network interface layer


    正确答案：A

  • 第14题：

    ● The TCP protocol is a __（72）__ layer protocol．

    （72） A． physical B． network C． transport D． application


    正确答案：C
    TCP协议是传输层的协议。

  • 第15题：

    is a connectionless TCP/IP transport layer protocol.

    A．FTP

    B．UDP

    C．1P

    D．ICMP


    正确答案：B
    解析：UDP是一个无连接的TCP/IP传输层协议。

  • 第16题：

    When an IP packet is Layer 3－switched from a source in one VLAN to a destination in another VLAN,which field in a packet will be rewritten? ()

    A. Layer 2 TTL

    B. Layer 3 TTL

    C. Layer 3 source address

    D. Layer 3 transport protocol

    E. Layer 3 destination address


    参考答案：B

  • 第17题：

    TCP/IP（ ）layer protocols provide services to the application（ ）running on a computer.The application layer does not define the application itself,but rather it defines（ ）that applications need--like the ability to transfer a file in the case of HTTP.In short,the application layer provides an（ ）between software running on a computer and the network itself.The TCP/IP application layer includes a relatively large number of protocols,with HTTP being only one of those.The TCP/IP（请作答此空）layer consists of two main protocol options--the Transmission Control Protocol（TCP）and the User Datagram Protocol（UDP）.

    A.application
    B.session
    C.physical
    D.transport

    答案：D
    解析：
    TCP/IP传输层协议为运行在计算机上的应用软件提供服务。应用层没有定义应用本身，而是定义了应用需要的服务，例如采用HTTP可以传输文件。简而言之，应用层提供了运行在计算机上的软件与网络之间的接口。TCP/IP应用层包括了很多的协议，HTTP仅是其中之一。TCP/IP传输层主要由两个可选的协议组成——传输控制协议（TCP）和用户数据报协议（UDP）。

  • 第18题：

    The TCP protocolis a （71） layer protocol. Each connection connects two TCPs that may be just one physical network apart or located on opposite sides ofthe globe.

    A.physical
    B.network
    C.transport
    D.application

    答案：C
    解析：
    网络工程师

  • 第19题：

    When an IP packet is Layer 3-switched from a source in one VLAN to a destination in anotherVLAN, which field in a packet will be rewritten? （）

    • A、Layer 2 TTL
    • B、Layer 3 TTL
    • C、Layer 3 source address
    • D、Layer 3 transport protocol
    • E、Layer 3 destination address

    正确答案:B

  • 第20题：

    When an IP packet is Layer 3-switched from a source in one VLAN to a destination in another VLAN,which field in a packet will be rewritten? （）

    • A、Layer 2 TTL
    • B、Layer 3 TTL
    • C、Layer 3 source address
    • D、Layer 3 transport protocol
    • E、Layer 3 destination address

    正确答案:B

  • 第21题：

    Which of the following is a connectionless transport layer protocol？（）

    • A、 TCP
    • B、 HTTP
    • C、 SMTP
    • D、 UDP

    正确答案:D

  • 第22题：

    Which of the following is a connection oriented transport layer protocol？ （）

    • A、 TCP
    • B、 UDP
    • C、 TFTP
    • D、 SNMP

    正确答案:A

  • 第23题：

    单选题
    A transport layer protocol has several responsibilities, One is to create a process-to-process (program-to-program) communication; TCP uses port (1) to accomplish this. Another responsibility of a transport layer protocol is to create a (2) and error-control mechanism at the transport level. TCP uses a sliding (3) protocol to achieve flow control. It uses the acknowledgment packet, time-out, and retransmission to achieve (4) control. The transport layer is also responsible for providing a connection mechanism for the application program. The application program sends (5) of data to the transport layer. It is the responsibility of the transport layer at the sending station to make a connection with the receiver. 空白（1）处应选择（）
    A

    numbers

    B

    connection

    C

    diagrams

    D

    resources


    正确答案： A
    解析： 传输层协议有多个职责。一是创建进程到进程（程序到程序）的通信，由TCP使用端口号来完成；另一个职责是在传输层创建流和差错控制机制。TCP利用滑动窗口协议来实现流控制。它使用确认分组、超时、重传机制来完成差错控制。传输层也负责为应用程序提供连接机制，应用程序将数据流发送到传输层，发送端的传输层负责建立于接收端之间的连接。

  • 第24题：

    单选题
    Which of the following is a connectionless transport layer protocol？（）
    A

     TCP

    B

     HTTP

    C

     SMTP

    D

     UDP


    正确答案： A
    解析： 暂无解析

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