CompTIA认证考试LX0-101章节练习(2018.12.07)

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
Which system administration command you can use to update Id.so.cache after the installation of new shared libraries？（）
A. Idconfig
B. Idd
C. libpath
D. newlibs
单项选择题
What is the difference between thE.remove and thE.purge action with the dpkg command？（）
A. -remove removes the program， -purge also removes the config files
B. -remove only removes the program， -purge only removes the config files
C. -remove removes a package， -purge also removes all packages dependent on it
D. -remove removes only the package file itself， -purge removes all files related to the package
填空题
USB fax/modems that conform to this subclass of the Communication Device Class （CDC） vendor neutral standard are Linux compatible （answer is a 3 letter acronym）.（）
答案：ACM(ABSTRACTCONTROLMODEL)
填空题
What application can be used in place of xhost？ Please enter only the name without path. Answer：（）
答案：XAUTH
单项选择题
The command echo $! will produce what output？（）
A. the process id of last background command
B. the exit status of the last command
C. the exit status of the last background command
D. the process id of the current shell
E. the name of the command being executed
单项选择题
You have read/write permission on an ordinary file foo. You have just run In foo bar. What would happen if you ran rm foo？（）
A. foo and bar would both be removed.
B. foo would be removed while bar would remain accessible.
C. foo would be removed， bar would still exist but would be unusable.
D. Both foo and bar would remain accessible.
E. You would be asked whether bar should be removed.
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
填空题
Which program finds only files that are in your PATH？（）
答案：/USR/BINyWHICH
单项选择题
Which of the following commands makes /bin/foo executable by everyone but writable only by its owner？（）
A. chmod 557 /bin/foo
B. chmod o+rwx.a+rx/bin/foo
C. chown 557 /bin/foo
D. chmod 755/bin/foo