CompTIA认证考试LX0-101章节练习(2019.05.04)

单项选择题
With Xorg 7.0， what is the name of the default font server？（）
A. xfserv
B. xfs
C. fonts
D. xfstt
E. fserv
单项选择题
Which of the following commands will change all CR-LF pairs in an imported text file， userlist.txt， to Linux standard LF characters and store it as newlist.txt？（）
A. tr ’\r\n’ " < userlist.txt > newlist.txt
B. tr -c ’\n\r’ " < newlist.txt > userlist.txt
C. tr -d \r¯ < userlist.txt > newlist.txt
D. tr \r¯\n¯ userlist.txt newlist.txt
E. tr -s ®^M’¡®^J’ userlist.txt newlist.tx
填空题
What command with all options and/or parameter will send the signal USR1 to any executing process of program apache2？（）
答案：KILLALL-SUSR1APACHE2
单项选择题
You are running Linux 2.0.36 and you need to add a USB mouse to your system. Which of the following statements is true？（）
A. You need to rebuild the kernel.
B. You need to upgrade the kernel
C. You need to load the USB modules for your existing modular kernel.
D. USB support is not available in Linux.
单项选择题
You are looking for an executable file foo. Select the command that would search forfoo within directories set in the shell variable， PATH.（）
A. locate
B. which
C. find
D. query
E. whereis
单项选择题
Many people like the vi text editor but the default bash command line editor recognizes emacs keystrokes. What command entered into a bash initialization file will have bash recognize vi keystrokes after login？（）
A. history-pvi
B. alias emacs=vi
C. HISTCMD=vi
D. set -o vi
E. unset emacs
单项选择题
You ran out of space and added a eighth disk to your SCSI-1 system. When you try to start， the system no longer boots. What is most likely the cause of this problem？（）
A. SCSI-1 supports only 8 devices including the adaptor.
B. SCSI-1 supports only 6 disks per adaptor.
C. There is a SCSI-ID conflict that causes that problem.
D. You forgot to set the SCSI-ID #8 for the new disk.
单项选择题
What command will print a list of usernames （first column） and their corresponding user id （uid， third column） from /etc/passwd？（）
A. cut -d： -f 1，3 /etc/passwd
B. chop -c 1，3 /etc/passwd
C. tac 1-3/etc/passwd
D. fmt -u /etc/passwd
填空题
Which program finds only files that are in your PATH？（）
答案：/USR/BINyWHICH
单项选择题
What information is displayed by the command cat/proc/dma？（）
A. whether DMA is enabled
B. which DMA channels are in use
C. which DMA mode is in use
D. general information about DMA on the machine