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单选题

设置文件偏移量的系统调用是()

A
trun cate
B
sync
C
lseek
D
create

题目答案

C

答案解析

暂无解析
举一反三
单选题

用命令成功建立一个用户后,他的信息会记录在哪个文件中( )。

A
/etc/passwd
B
etc/group
C
etc/shadow
D
etc/profile

题目答案

A

答案解析

暂无解析
单选题

某台计算机原本有一块IDE硬盘,装上Linux系统后,因容量太小,又添加了一块SATA硬盘,并且在上面划了一个主分区,则该主分区的名称是( )。

A
hda1
B
sda1
C
sdb1
D
hdb1

题目答案

B

答案解析

暂无解析
单选题

用户将多个文件用压缩命令成一个压缩文件,但发现某个文件要从压缩包里删除,用到的命令是( )。

A
zip -d
B
zip –u
C
gzip -d
D
gzip -u

题目答案

A

答案解析

暂无解析
单选题

已知mount命令不是Linux的内部命令,如何查看mount的帮助信息( )。

A
mount --help
B
info mount
C
man mount
D
help mount

题目答案

C

答案解析

暂无解析
单选题

You are given a PC, a router, and a cable. Select the correct combination that will allow you to log into router VE1 locally using a terminal emulation program such as HyperTerminal.

A
Connect the PC's COM port to the router's console port using a straight-through cable.
B
Connect the PC's COM port to the router's console port using a rollover cable.
C
Connect the PC's COM port to the router's Ethernet port using a straight-through cable.
D
Connect the PC's Ethernet port to the router's Ethernet port using a rollover cable.
E
Connect the PC's Ethernet port to the router's Ethernet port using a straight- through cable.
F
None of the above

题目答案

B

答案解析

解析:EXPLANATION:TO CONNECT THE ROUTER IN CONSOLE PORT TO CONFIGURE USING HYPERTERMINAL, YOU REQUIRED THE ROLLOVER CABLE, WHICH CONNECTS THE PC'S COM PORT TO THE ROUTER'S CONSOLE PORT.INCORRECT ANSWERS:A, C, E: STRAIGHT CABLES ARE USED FOR: HOST TO SWI