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網(wǎng)絡(luò)工程師每日一練試題內(nèi)容(2023/4/20)
試題1
下圖中 ( ) 正確地表現(xiàn)了CSMA/CD和令牌環(huán)兩種局域網(wǎng)中線路利用率與平均傳輸延遲的關(guān)系。
A. A
B. B
C. C
D. D
查看答案
試題參考答案:B
試題2
以下關(guān)于AES加密算法的描述中,錯誤的是( )。查看答案
試題參考答案:A
試題3
當站點收到"在數(shù)據(jù)包組裝期間生存時間為0"的 ICMP 報文,說明()。查看答案
試題參考答案:D
試題4
關(guān)于以下命令片段的說法中,正確的是()。查看答案
試題參考答案:D
試題5
微機系統(tǒng)中,( )不屬于CPU的運算器組成部件。查看答案
試題參考答案:A
試題6
管理員為某臺Linux系統(tǒng)中的/etc/hosts文件添加了如下記錄,下列說法正確的是( )。127.0.0.1 localhostlocaldomain localhost 192.168.1.100 linumu100.com web80 192.168.1.120 emailserver查看答案
試題參考答案:A
試題7
李某購買了一張有注冊商標的應(yīng)用軟件光盤,則李某享有()。查看答案
試題參考答案:B
試題8
在安全通信中,A將所發(fā)送的信息使用(40)進行數(shù)字簽名,B收到該消息后可利用(41)驗證該消息的真實性。查看答案
試題參考答案:B、A
試題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
試題參考答案:C、B、D、A、C
試題10
下列關(guān)于DHCP的說法中,錯誤的是( )。查看答案
試題參考答案:D
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