Operating System Architecture Set 19

Computer Science Engineering (CSE)

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This set of Operating System Architecture Multiple Choice Questions & Answers (MCQs) focuses on Operating System Architecture Set 19

Q1 | The command that can be used to restrict incoming messages to a user is
  • halt
  • mesg
  • grep
  • sleep
Answer: mesg
Q2 | The sort command in UNIX
  • used to sort a file
  • used to sort the list of files in a directory
  • both a and b
  • none of the abov
Answer: used to sort a file
Q3 | Which of the following keys is used to replace a single character with new text?
  • s
  • s
  • c
Answer: s
Answer: s
Q4 | The tail command in UNIX
  • can be used to look at the tail or bottom of the file
  • can be used to display the list of last 10 files in the current directory
  • can be used to display the list of last 15 in the current directory
  • none of the above
Answer: can be used to look at the tail or bottom of the file
Q5 | Which command is used to change protection mode of files starting with the string emp and ending with 1,2, or 3?
  • can be used to look at the tail or bottom of the file
  • chmod u x emp[l-3]
  • chmod u r ??? emp
  • chmod 222 emp?
Answer: chmod u x emp[l-3]
Q6 | Which command will be used with vi editor to append text at end of line?
  • is–x
  • is
  • is–1
  • is–f–x
Answer: is
Q7 | Which command is used to display the device name of the terminal you are using?
  • who
  • stty
  • tty
  • ls
Answer: tty
Q8 | Which command allows you to view your file 24 lines at a time ?
  • more
  • cat
  • none of the above
  • pg
Answer: more
Q9 | The tar command in UNIX
  • used to create compressed archives of directories and file
  • used to extract directories and files from an archives
  • both a and b
  • none of the abov
Answer: both a and b
Q10 | Which of the following commands is used to rename a file?
  • rename
  • remove
  • mv
  • ren
Answer: mv
Q11 | Which of the following calls never returns an error?
  • getpid
  • ioct1
  • fork
  • open
Answer: getpid
Q12 | Which of the following commands is used to count the total number of lines,words and characters contained in a file?
  • count p
  • wc
  • wcount
  • count w
Answer: wc
Q13 | The cc command makes a total of
  • 1 pass
  • 2 pass
  • 3 pass
  • 4 pass
Answer: 4 pass
Q14 | Which command will be used with vi editor to move back to the beginning of a word
  • b
  • e
  • a
  • w
Answer: b
Q15 | Mounting a file system results in the loading of
  • boot block
  • super block
  • i-node table
  • all of thes
Answer: super block
Q16 | When a process makes a system call ,its mode changes from
  • user to kernel
  • kernel to user
  • restricted to unrestricted
  • unrestricted to restricted
Answer: user to kernel
Q17 | Which of the following files contains information related to password aging?
  • hadow
  • profile
  • password
  • all of these
Answer: password
Q18 | Which of the following are character special files?
  • terminal
  • printer
  • modem
  • tape drive
Answer: printer
Q19 | To allow only one user to work with a particular file at a particular time ,one has to
  • semaphore
  • critical region
  • locking
  • dedicated mode
Answer: locking
Q20 | A popular boot loader used by most Linux distributions to boot Linux is called
  • fifo
  • lilo
  • lifo
  • none
Answer: lilo
Q21 | LILO can also be used to boot other operating systems as well such as ……..
  • ms-dos
  • windows 98
  • windows nt
  • all of these
Answer: all of these
Q22 | LILO can be installed to either ……..of Linux root partition.
  • mbr
  • to the boot record
  • both a and b
  • none
Answer: both a and b
Q23 | What is LILO ?
  • list in list out
  • last in last out
  • linux loader
  • none
Answer: linux loader
Q24 | LILO’s configuration file is
  • /etc/lilo.conf
  • lilo.config
  • etc/lilo.config
  • none
Answer: /etc/lilo.conf
Q25 | Other boot loaders which can be used to load Linux exist:
  • grub
  • loadlin
  • both a and b
  • none
Answer: both a and b
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