Free Software Development Lifecycle MCQs with Answers

• A. ic
• B. ai
• C. sm
• D. ts

Explanation: The vi setting ic means ignore case during pattern searches, so uppercase and lowercase letters are treated as equivalent.

• A. who | tee user.lst
• B. who > user.lst
• C. who >> user.lst
• D. who < user.lste

Explanation: tee sends the command's output to both standard output and the specified file, so who | tee user.lst displays the result while saving it.

• A. copy programs/wb misc/wbx
• B. cp programs/wb misc/wbx
• C. tar programs/wb misc/wbx
• D. copy a:programs/wb b:misc/wbx

Explanation: cp copies the source path programs/wb to the destination path misc/wbx.

• A. more
• B. pg
• C. cat
• D. lp

Explanation: pg displays text one page at a time and is traditionally associated with viewing a file in fixed screen-sized pages, such as 24 lines.

• A. s
• B. r
• C. w
• D. d

Explanation: Within the traditional mail command, s saves the current message to a separate file, normally followed by its filename.

• A. .exrc
• B. .profile
• C. .autoexec
• D. autoexec.bat

Explanation: The .profile file contains shell commands executed when a user logs in, such as environment-variable and path settings.

• A. pid
• B. du
• C. ps
• D. au

Explanation: ps displays information about active processes, including their process IDs, owners, and status.

• A. head - r
• B. tail
• C. eof
• D. bof

Explanation: `tail` displays the last part of a file, whereas `head` displays its beginning.

• A. write
• B. mail
• C. wall
• D. mesg

Explanation: `wall` broadcasts a message to all users currently logged in to the system.

• A. sort
• B. sh
• C. st
• D. sort -r

Explanation: `sort` arranges input lines in ascending lexicographic order by default, which is usually described as alphabetical order.

• A. logic
• B. profile
• C. shell
• D. erxc

Explanation: The shell is the command interpreter between the user and the UNIX kernel, accepting commands and launching programs.

• A. cd
• B. changedir
• C. chdir
• D. cdir

Explanation: `cd` changes the shell's current working directory. The other names are not the standard UNIX command used for this purpose.

• A. chmod 761 note
• B. chmod 671 note
• C. chmod 167 note
• D. chmod 4=rwx, g=rw note

Explanation: In numeric permissions, 7 means read, write, and execute; 6 means read and write; and 1 means execute only.

• A. cat
• B. head
• C. more
• D. grep

Explanation: `head` displays the beginning, or top portion, of a file. `tail` is its counterpart for the end of a file, while `grep` searches for…

• A. -1
• B. -i
• C. -x
• D. -R

Explanation: The `-R` option makes `chmod` operate recursively on a directory and its contents, including subdirectories.

• A. chmod go + x, u - x letter
• B. chmod g - x, uo + r letter
• C. chmod go + r, u + x letter
• D. chmod u - x, go + r letter

Explanation: `u-x` removes execute permission from the user, and `go+r` adds read permission for the group and others.

• A. shutdown
• B. haltsys
• C. cancel
• D. kill

Explanation: The `kill` command sends a signal to a process, including the termination signal.

• A. /boot/lilo.conf
• B. /etc/conf.modules
• C. /etc/named.boot
• D. /etc/lilo.conf

Explanation: On traditional Linux systems using LILO, `/etc/lilo.conf` contains the kernel image and boot-entry configuration that must be updated…

• A. grep
• B. wc
• C. touch
• D. cat

Explanation: `touch` updates a file's access and modification timestamps, creating the file if it does not already exist.

• A. 0
• B. 755
• C. 744
• D. 555

Explanation: Permissions are written as owner, group, and others: `7` gives the owner read, write, and execute, while `5` gives each remaining class…