(完整版)计算机网络英文题库(附答案)chapter5

更新时间:2023-06-04 01:07:10 阅读: 评论:0

Chapter 5 The Link Layer and Local Area Network
1A (  ) protocol is ud to move a datagram over an individual link.
A    application-layer       
B    transport-layer
C    network-layer           
D    link-layer
shoot the moon2.The units of data exchanged by a link-layer protocol are called (  ).
火星时代A    datagrams               
B    frames
C    gments               
D    messages
3.Which of the following protocols is not a link-layer protocol? (  )
A    Ethernet               
B    PPP
C    HDLC                   
D研究生政审表    IPmba分数线
4unbreak my heartIn the following four descriptions, which one is not correct? (  )
A    link-layer protocol has the node-to-node job of moving network-layer datagrams over a single link in the path.
B    The rvices provided by the link-layer protocols may be different.
C    A datagram must be handled by the same link-layer protocols on the different links in the path.
D    The actions taken by a link-layer protocol when nding and receiving frames include error detection, flow control and random access.
5Which of the following rvices can not offered by a link-layer protocol? (  )
A    congestion control               
B    Link Access   
C    Error control                   
D    Framing
6(  ) protocol rves to coordinate the frame transmissions of the many nodes when multiple nodes share a single broadcast link.
A    ARP       
B    MAC   
C    ICMP   
D    DNS
7In the following four descriptions about the adapter, which one is not correct? (  )
Abho    The adapter is also called as NIC.
B    The adapter is a mi-autonomous unit.
C    The main components of an adapter are bus interface and the link interface.
D    The adapter can provide all the link-layer rvices.
8Consider CRC error checking approach, the four bit generator G is 1011, and suppo that the data D is 10101010, then the value of R is(  ).
    010     
    100     
    011       
    110
9In the following four descriptions about random access protocol, which one is not correct? (  )
    In slotted ALOHA, nodes can transmit at random time.
    In pure ALOHA, if a frame experiences a collision, the node will immediately retransmit it with probability p.
    The maximum efficiency of a slotted ALOHA is higher than a pure ALOHA.
    In CSMA/CD, one node listens to the channel before transmitting.
10In the following descriptions about MAC address, which one is not correct? (  )
    The MAC address is the address of one node’s adapter.
    No two adapters have the same MAC address.
    The MAC address doesn’t change no matter where the adapter goes.
    MAC address has a hierarchical structure.
11The ARP protocol can translate (  ) into (    ). (  )
    host name, IP address         
    host name, MAC address
C     IP address, MAC address       
D    broadcast address, IP address
12The value of Preamble field in Ethernet frame structure is (  )
A    10101010 10101010……10101010 11111111
B弗兰克 阿巴内尔    10101011 10101011……10101011 10101011
C    10101010 10101010……10101010 10101011
D    10101010 10101010……10101010 10101010
13There are four steps in DHCP, the DHCP rver can complete (  ).
A    DHCP rver discovery           
B    DHCP rver offers
C    DHCP request                   
D    DHCP respon英文句子在线翻译
14In CSMA/CD, the adapter waits some time and then returns to nsing the channel. In the following four times, which one is impossible? (  )
A    0 bit times           
B    512 bit times
C    1024 bit times       
D    1028 bit times
15The most common Ethernet technologies are 10BaT and 100BaT. “10” and “100” indicate(  ).
A    the maximum length between two adapters
B    the minimum length between two adapters
C    the transmission rate of the channel
D    the transmission rate of the node
16The principal components of PPP include but not(  ).
A    framing                   
B    physical-control protocol 
Cbenevolence    link-layer protocol         
D    network-layer protocoljoss paper
17In the following four options, which rvice can not be provided by switch? (  )
A    filtering                   
B    lf-learning
C    forwarding                 
D    optimal routing
18In the following four rvices, which one was be required in PPP? (  )
A    packet framing             
B    error detection
C    error correction            
D  multiple types of link
19The ability to determine the interfaces to which a frame should be directed, and then directing the frame to tho interfaces is(  ).
A  filtering                   
forwarding
C  lf-learning               
D  optimal routing
20In (  ) transmission(s), the nodes at both ends of a link may transmit packets at the same time.
A    full-duplex               

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