2023年04月21日来源:信管网 作者:cnitpm
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网络工程师每日一练试题内容(2023/4/20)
试题1
下图中 ( ) 正确地表现了CSMA/CD和令牌环两种局域网中线路利用率与平均传输延迟的关系。
A. A
B. B
C. C
D. D
查看答案
试题参考答案:B
试题解析与讨论:www.cnitpm.com/st/85842956.html
试题2
以下关于AES加密算法的描述中,错误的是( )。查看答案
试题参考答案:A
试题解析与讨论:www.cnitpm.com/st/454133022.html
试题3
当站点收到"在数据包组装期间生存时间为0"的 ICMP 报文,说明()。查看答案
试题参考答案:D
试题4
关于以下命令片段的说法中,正确的是()。查看答案
试题参考答案:D
试题解析与讨论:www.cnitpm.com/st/520783095.html
试题5
微机系统中,( )不属于CPU的运算器组成部件。查看答案
试题参考答案:A
试题6
管理员为某台Linux系统中的/etc/hosts文件添加了如下记录,下列说法正确的是( )。127.0.0.1 localhostlocaldomain localhost 192.168.1.100 linumu100.com web80 192.168.1.120 emailserver查看答案
试题参考答案:A
试题7
李某购买了一张有注册商标的应用软件光盘,则李某享有()。查看答案
试题参考答案:B
试题8
在安全通信中,A将所发送的信息使用(40)进行数字签名,B收到该消息后可利用(41)验证该消息的真实性。查看答案
试题参考答案:B、A
试题解析与讨论:www.cnitpm.com/st/403196179.html
试题9
The usual way to ensure reliable delivery is to provide the (1) with some feedback about what is happening at the other end of the line. Typically, the protocol calls for the receiver to send back special (2) frame bearing positive or negative (3) about the incoming frames. If the sender receives a positive acknowledgement about a frame, it knows the the frame has arrived safely. On the other hand, a negative acknowledgement means that something has gone wrong, and the frame must be transmitted again.
An additional complication comes from the possibility that hardware troubles may cause a frame to (4) completely. In this case, the receiver will not react at all, since it has no any reason to react. It should be clear that a protocol in which the sender transmits a frame and then waits for an acknowledgement, positive or negative, will hang forever if a frame is ever lost due to, for example, (5) hardware.。
(1)A、receiver
B、controller
C、sender
D、customer
(2)A、data
B、controll
C、request
D、session
(3)A、application
B、connection
C、stream
D、acknowledgement
(4)A、vanish
B、vary
C、appear
D、incline
(5)A、acting
B、working
C、malfunctioning
D、functioning
查看答案
试题参考答案:C、B、D、A、C
试题解析与讨论:www.cnitpm.com/st/89293074.html
试题10
下列关于DHCP的说法中,错误的是( )。查看答案
试题参考答案:D
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