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【单选题】
TCP/IP 协议族是理解计算机网络和因特网的关键。下图给出了现实生活中邮政系统的工作过程与网络基于 TCP/IP 协议进行信息传输的过程示意图,仔细理解该图,注意理解、区分与命名,回答问题。 按图示,邮政网络被划分成了1  发件人 / 收件人层,2 ‚ 聚集点 / 分送点层, ƒ3 发送邮局 / 接收邮局层, „4 发送站点 / 接收站点层, 5 运输层。 TCP/IP 协议 ( 族 ) 被划分成了 (I) 物理层, (II) 链路层, (III)IP 层, (IV) 传输层, (V) 应用层。类比邮政网络和 TCP/IP 协议族的计算机网络,具有正确类比关系的是 _____ 。
A.
映射:  ①  --(I) ,② ‚ ---(II) , ③ƒ ---(III) , „④ ---(IV) , ⑤ ---(V)
B.
映射:  ①  -- (IV) ,② ‚ --- (V) , ③ƒ ---(III) , „④ ---(II) , ⑤ ---(I)
C.
映射:  ①  --(V) , ‚ ② ---(IV) , ③ƒ ---(III) , ④„ ---(II) , ⑤ ---(I)
D.
映射:①  --(II) ,② ‚ ---(III) , ƒ③ ---(IV) , „④ ---(I) , ⑤ ---(V)
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举一反三
【单选题】A={1,4,7}, B={-2,1,2,4}, 则A∩B=__________.
A.
{1,4,7,7,2}
B.
{1,4}
C.
{1,4,2}
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A.
{1,2,3,4,7,9}
B.
{1,3,9}
C.
{2,7}
D.
{1,3,4,9}
【简答题】按规律填空. (1)1,4,9,16,25,______,______. (2)1,7,2,7,4,7,8,7,______,______.
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简短化
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连续化
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大型化
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A.
because
B.
if
C.
as
D.
until
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【单选题】Be kind and courteous to the interviewer , not sitting ___ you are told to do so.
A.
if
B.
as
C.
until
D.
because
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