What Does 101-400 test question Mean?

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Q31. – (Topic 3) 

Which grep command will print only the lines that do not end with a / in the file foo? 

A. grep '/$' foo 

B. grep '/#' foo 

C. grep -v '/$' foo 

D. grep -v '/#' foo 

Answer:

Q32. – (Topic 3) 

What is the maximum niceness value that a regular user can assign to a process with the nice command when executing a new process? 

A. 9 

B. 19 

C. 49 

D. 99 

Answer:

Q33. – (Topic 4) 

Creating a hard link to an ordinary file returns an error. What could be the reason for this? 

A. The source file is hidden. 

B. The source file is read-only. 

C. The source file is a shell script. 

D. The source file is already a hard link. 

E. The source and the target are on different filesystems. 

Answer:

Q34. – (Topic 4) 

Which of the following commands can be used to display the inode number of a given file? 

A. inode 

B. ls 

C. ln 

D. cp Answer: B 

Q35. CORRECT TEXT – (Topic 3) 

Which Bash environment variable defines in which file the user history is stored when exiting a Bash process? (Specify ONLY the variable name.) 

Answer: HISTFILE 

Q36. – (Topic 3) 

When given the following command line. 

echo "foo bar" | tee bar | cat 

Which of the following output is created? 

A. cat 

B. foo bar 

C. tee bar 

D. bar 

E. foo 

Answer:

Q37. – (Topic 2) 

When using rpm –verify to check files created during the installation of RPM packages, which of the following information is taken into consideration? (Choose THREE correct answers.) 

A. Timestamps 

B. MD5 checksums 

C. Inodes 

D. File sizes 

E. GnuPG signatures 

Answer: A,B,D 

Q38. – (Topic 2) 

After modifying GNU GRUB's configuration file, which command must be run for the changes to take effect? 

A. kill -HUP $(pidof grub) 

B. grub-install 

C. grub 

D. No action is required 

Answer:

Q39. – (Topic 3) 

Which of the following commands will reduce all consecutive spaces down to a single space? 

A. tr '\\s' ' ' < a.txt > b.txt 

B. tr -c ' ' < a.txt > b.txt 

C. tr -d ' ' < a.txt > b.txt 

D. tr -r ' ' '\\n' < a.txt > b.txt 

E. tr -s ' ' < a.txt > b.txt 

Answer:

Q40. – (Topic 3) 

Which of the following commands displays the contents of a gzip compressed tar archive? 

A. gzip archive.tgz | tar xvf –

B. tar ztf archive.tgz 

C. gzip -d archive.tgz | tar tvf –

D. tar cf archive.tgz 

Answer:

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