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This set of Operating System Architecture Multiple Choice Questions & Answers (MCQs) focuses on Operating System Architecture Set 7
Q1 | Which command is used to display the characteristics of a process?
- pid
- du
- ps
- au
Q2 | The filed separator in cut command is specified with
- -a option
- -d option
- -r option
- -x option
Q3 | Which option will be used with touch command to change the access time?
- -a
- -b
- -t
- -h
Q4 | Which command is used to make all files and sub-directories in the directory (progs) executable by all users?
- chmod -r a+x progs
- chmod -r 222 progs
- chmod -1 a+x progs
- chmod -x a+x progs
Q5 | The second set of the three permissions (r-) indicates that
- group has read permission only
- other has read permission only
- owner has read permission only
- group has write permission only
Q6 | Which column contains all details of the permissions of a file when you issue the ls - l command?
- second
- fourth
- third
- first
Q7 | Which of the following commands is used to display your working directory?
- second
- fourth
- third
- first
Q8 | While working with mail command, which command is used to save mail i a separate file?
- s
- r
- w
- d
Q9 | Which command is used to terminate a process?
- shutdown
- haltsys
- cancel
- kill
Q10 | The cp command uses:
- standard input file
- standard output file
- both input and output file
- neither standard input nor standard output file
Q11 | Which command is used to print a file?
- prn
- pg
- lp
Q12 | Which command is used to list out all the hidden files along with the other files?
- ls -l
- ls -x
- ls -f
- ls -a
Q13 | Which command is used with vi editor to search a pattern in the forward direction?
- /
- ?
- //
- ??
Q14 | The command to count the number of files in the current directory by using pipes, is
- ls | wc
- ls -l | ws -l
- ls | wc -w
- ls | ws -c
Q15 | Which of the following commands is used to get directory one level up?
- cd
- cd ..
- cd/
- chdir
Q16 | 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
- countw
Q17 | Which command is used to delete all files in the current directory as well as all files and sub-directories in its subdirectories?
- rm *
- rm -r *
- rm all
- rm *.*
Q18 | Which of the following commands is used to change the working directory?
- cd
- changedir
- chdir
- cdir
Q19 | Services provided by kernel are………
- controlling execution of process
- scheduling processes
- allocating main memory for an executing process
- all of these
Q20 | The shell acts as an interface between the………..
- user and kernel
- user and operating system
- kernel and operating system
- none of these
Q21 | When a process executes a system call, the execution mode of the process changes from ………..
- kernel mode to user mode
- user mode to kernel mode
- user mode to operating system mode
- none of these
Q22 | when the kernel services an intrrupt, it blocks out low priority interrupts but………..
- services middle priority interrupt
- services higher priority interrupts
- both a and b
- none of these
Q23 | The commonly used UNIX commands like date, ls, cat, etc. are stored in………..
- /dev directory
- /bin and /usr/bin directories
- /tmp directory
- /unix directory
Q24 | Which of the following commands is used to summarize the disk usage?
- chkdsk
- fdisk
- du
- disk
Q25 | Which command is used to sort the lines of data in a file in alphabetical order?
- sort
- sh
- st
- sort -r