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

<上一题目录下一题>

热门试题

单项选择题WhichDebianpackagesystemcommandwilllistallpartiallyinstalledpackagesandsuggesthowtogetthemcorrectlyinstalled？（）

A. dpkg-G
B. apt-get-u
C. dpkg-Dh
D. dpkg-l
E. apt-get-y

单项选择题What is the output when the following shell script executes？（） cat<；<；foobar Hello foobar foobar

A. The contents of the file foobar.
B. Hello
C. No output but a file named foobar is created.
D. Hello foobar
E. Hello foobar foobar

单项选择题WhichsystemadministrationcommandyoucanusetoupdateId.so.cacheaftertheinstallationofnewsharedlibraries？（）

A. Idconfig
B. Idd
C. libpath
D. newlibs

单项选择题YouarerunningLinux2.0.36andyouneedtoaddaUSBmousetoyoursystem.Whichofthefollowingstatementsistrue？（）

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Whichofthefollowingcommandsmakes bin fooexecutablebyeveryonebutwritableonlybyitsowner？（）

A. chmod 557 /bin/foo
B. chmod o+rwx.a+rx/bin/foo
C. chown 557 /bin/foo
D. chmod 755/bin/foo