201-450 무료 덤프문제 온라인 액세스

You use top to examine the CPU time being consumed by various processes on your system.
You discover that one process, dfcomp, is consuming more than 90 percent of your system's CPU time. What can you conclude?

• A.No program should consume 90 percent of available CPU time; dfcomp is clearly malfunctioning and should be terminated.
• B.This is normal; dfcomp is the kernel's main scheduling process, and it consumes any unused CPU time.
• C.Very little; dfcomp could be legitimately consuming that much CPU time, or it could be an unauthorized or malfunctioning program.
• D.This behavior is normal if your CPU is less powerful than a 2.5GHz EM64T Pentium; but on newer systems, no program should consume 90 percent of CPU time.

Which of the following commands will erase the contents of the /dev/sdb3 partition?

• A.umount /dev/sdb3
• B.dd if=/dev/zero of=/dev/sdb3
• C.rm /dev/sdb3
• D.dd of=/dev/zero if=/dev/sdb3

Why shouldn't you use the options -z and -j when using tar with a magnetic tape backup?

• A.Backup and restore performance will be better if we don't introduce the compression delay into the process
• B.Standard Linux compression software won't be able to write to sequential tape media.
• C.Standard Linux compression software and hardware compresion in the tape drive will cause bigger files on the tapes.
• D.In case of damaged tape uncompressed tar archives may allow partial recovery of the backup
• E.The tape drive hardware-based compression achieves higher compression rates than either gzip or bzip2 software based compression.

Which of the following commands erases the contents of the /dev/sdb3 partition?

• A.umount /dev/sdb3
• B.dd if=/dev/zero of=/dev/sdb3
• C.rm /dev/sdb3
• D.dd of=/dev/zero if=/dev/sdb3

Which program lists information about files and network connections opened by processes?
(Specify ONLY the command without any path or parameters.)