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网络工程师每日一练试题内容(2022/6/17)
试题1
能够容纳 200 台客户机的 IP 地址段,其网络位最长是()位。查看答案
试题参考答案:D
试题解析与讨论:www.cnitpm.com/st/520747875.html
试题2
The TCP protocolis a (1) layer protocol. Each connection connects two TCPs that may be just one physical network apart or located on opposite sides ofthe globe. In other words, each connection creates a (2) witha length that may be totally different from another path created by another connection. This means that TCP cannot use the same retransmission time for all connections. Selecting afixed retransnussion time for all connections can result in serious consequences. Ifthe retransmission time does not allow enough time for a (3) to reach the destination and an acknowledgment to reach the source, it can result in retransmission of segments that are still on the way. Conversely, if the retransnussion time is longer than necessary for a short path, it may result in delay for the application programs.Even for one single connection, the retransmission time should not be fixed.A connection may be able to send segments and receive (4)faster during nontraffic period than during congested periods. TCP uses the dynamic retransmission time,a transmission time is different for each connection and which may be changed during the same connection. Retransmission time can be made(5) by basing it on the round-trip time (RTT). Several formulas are used for this purpose.
(1)A、physical
B、network
C、transport
D、application
(2)A、path
B、window
C、response
D、process
(3)A、process
B、segment
C、program
D、user
(4)A、connections
B、requests
C、acknowledgments
D、datagrams
(5)A、long
B、short
C、fixed
D、dynamic
查看答案
试题参考答案:C、A、B、C、D
试题解析与讨论:www.cnitpm.com/st/92823196.html
试题3
浮点数的表示分为阶和尾数两部分。两个浮点数相加时,需要先对阶,即()(n为阶差的绝对值)。查看答案
试题参考答案:D
试题解析与讨论:www.cnitpm.com/st/402859663.html
试题4
关于RSA 的描述中,错误的是( )。查看答案
试题参考答案:D
试题解析与讨论:www.cnitpm.com/st/314516941.html
试题5
NAT技术解决了IPv4地址短缺的问题,假设内网的地址数是m,而外网地址数n,若m>n,则这种技术叫做(1),若m>n,且n=1,则这种技术这叫做(2)。查看答案
试题参考答案:A、C
试题解析与讨论:www.cnitpm.com/st/238318386.html
试题6
HDLC协议中,若监控帧采用SREJ进行应答,表明采用的差错控制机制为()。查看答案
试题参考答案:B
试题7
Windows系统下,通过运行 ( ) 命令可以打开Windows管理控制台。
A、regedit
B、cmd
C、mmc
D、mfc
查看答案
试题参考答案:C
试题解析与讨论:www.cnitpm.com/st/88963063.html
试题8
在网络系统设计时,不可能使所有设计目标都能达到最优,下列措施中较为合理的是( )。查看答案
试题参考答案:D
试题解析与讨论:www.cnitpm.com/st/45433761.html
试题9
关于Windows Server 2008 操作系统的描述中,错误的是( )。查看答案
试题参考答案:B
试题10
SNMP是一种异步请求/响应协议,采用()协议进行封装。查看答案
试题参考答案:D
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