McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Computer Science Engineering (CSE) .
| 151. |
Which command is used to display the characteristics of a process? |
| A. | pid |
| B. | du |
| C. | ps |
| D. | au |
| Answer» C. ps | |
| 152. |
The filed separator in cut command is specified with |
| A. | -a option |
| B. | -d option |
| C. | -r option |
| D. | -x option |
| Answer» B. -d option | |
| 153. |
Which option will be used with touch command to change the access time? |
| A. | -a |
| B. | -b |
| C. | -t |
| D. | -h |
| Answer» A. -a | |
| 154. |
Which command is used to make all files and sub-directories in the directory (progs) executable by all users? |
| A. | chmod -r a+x progs |
| B. | chmod -r 222 progs |
| C. | chmod -1 a+x progs |
| D. | chmod -x a+x progs |
| Answer» A. chmod -r a+x progs | |
| 155. |
The second set of the three permissions (r-) indicates that |
| A. | group has read permission only |
| B. | other has read permission only |
| C. | owner has read permission only |
| D. | group has write permission only |
| Answer» A. group has read permission only | |
| 156. |
Which column contains all details of the permissions of a file when you issue the ls - l command? |
| A. | second |
| B. | fourth |
| C. | third |
| D. | first |
| Answer» D. first | |
| 157. |
Which of the following commands is used to display your working directory? |
| A. | second |
| B. | fourth |
| C. | third |
| D. | first |
| Answer» C. third | |
| 158. |
While working with mail command, which command is used to save mail i a separate file? |
| A. | s |
| B. | r |
| C. | w |
| D. | d |
| Answer» A. s | |
| 159. |
Which command is used to terminate a process? |
| A. | shutdown |
| B. | haltsys |
| C. | cancel |
| D. | kill |
| Answer» D. kill | |
| 160. |
The cp command uses: |
| A. | standard input file |
| B. | standard output file |
| C. | both input and output file |
| D. | neither standard input nor standard output file |
| Answer» D. neither standard input nor standard output file | |
| 161. |
Which command is used to print a file? |
| A. | |
| B. | prn |
| C. | pg |
| D. | lp |
| Answer» D. lp | |
| 162. |
Which command is used to list out all the hidden files along with the other files? |
| A. | ls -l |
| B. | ls -x |
| C. | ls -f |
| D. | ls -a |
| Answer» D. ls -a | |
| 163. |
Which command is used with vi editor to search a pattern in the forward direction? |
| A. | / |
| B. | ? |
| C. | // |
| D. | ?? |
| Answer» A. / | |
| 164. |
The command to count the number of files in the current directory by using pipes, is |
| A. | ls | wc |
| B. | ls -l | ws -l |
| C. | ls | wc -w |
| D. | ls | ws -c |
| Answer» C. ls | wc -w | |
| 165. |
Which of the following commands is used to get directory one level up? |
| A. | cd |
| B. | cd .. |
| C. | cd/ |
| D. | chdir |
| Answer» B. cd .. | |
| 166. |
Which of the following commands is used to count the total number of lines, words, and characters contained in a file. |
| A. | count p |
| B. | wc |
| C. | wcount |
| D. | countw |
| Answer» B. wc | |
| 167. |
Which command is used to delete all files in the current directory as well as all files and sub-directories in its subdirectories? |
| A. | rm * |
| B. | rm -r * |
| C. | rm all |
| D. | rm *.* |
| Answer» B. rm -r * | |
| 168. |
Which of the following commands is used to change the working directory? |
| A. | cd |
| B. | changedir |
| C. | chdir |
| D. | cdir |
| Answer» A. cd | |
| 169. |
Services provided by kernel are……… |
| A. | controlling execution of process |
| B. | scheduling processes |
| C. | allocating main memory for an executing process |
| D. | all of these |
| Answer» D. all of these | |
| 170. |
The shell acts as an interface between the ……….. |
| A. | user and kernel |
| B. | user and operating system |
| C. | kernel and operating system |
| D. | none of these |
| Answer» A. user and kernel | |
| 171. |
When a process executes a system call, the execution mode of the process changes from ……….. |
| A. | kernel mode to user mode |
| B. | user mode to kernel mode |
| C. | user mode to operating system mode |
| D. | none of these |
| Answer» B. user mode to kernel mode | |
| 172. |
when the kernel services an intrrupt, it blocks out low priority interrupts but……….. |
| A. | services middle priority interrupt |
| B. | services higher priority interrupts |
| C. | both a and b |
| D. | none of these |
| Answer» B. services higher priority interrupts | |
| 173. |
The commonly used UNIX commands like date, ls, cat, etc. are stored in……….. |
| A. | /dev directory |
| B. | /bin and /usr/bin directories |
| C. | /tmp directory |
| D. | /unix directory |
| Answer» B. /bin and /usr/bin directories | |
| 174. |
Which of the following commands is used to summarize the disk usage? |
| A. | chkdsk |
| B. | fdisk |
| C. | du |
| D. | disk |
| Answer» C. du | |
| 175. |
Which command is used to sort the lines of data in a file in alphabetical order? |
| A. | sort |
| B. | sh |
| C. | st |
| D. | sort -r |
| Answer» A. sort | |
| 176. |
If a file has read and write permissions for the owner, then the octal representation of the permissions will be |
| A. | 1 |
| B. | 6 |
| C. | 5 |
| D. | 3 |
| Answer» B. 6 | |
| 177. |
Which command is used to copy a file wb with the same name from the programs directory to the misc directory? |
| A. | copy programs/wb misc/wb |
| B. | cp programs/wb misc |
| C. | tar programs/wb misc/wb |
| D. | copy a:programs/wb b:misc/wb |
| Answer» B. cp programs/wb misc | |
| 178. |
The seventh field of /etc/password is…………. |
| A. | password |
| B. | login |
| C. | shell |
| D. | home |
| Answer» C. shell | |
| 179. |
Which command is used to display the end of the file? |
| A. | head - r |
| B. | tail |
| C. | eof |
| D. | bof |
| Answer» B. tail | |
| 180. |
The ls -l command tells |
| A. | who the owner of the file is |
| B. | the name of the group owner of the file |
| C. | how large the file is and when the file was last modified. |
| D. | all of the above |
| Answer» D. all of the above | |
| 181. |
Which option will be used with disk free command to include the total amount of disk space in the file system? |
| A. | -t |
| B. | -tt |
| C. | -4 |
| D. | -i |
| Answer» A. -t | |
| 182. |
Which command is used to set the three permissions for all the three categories of users of a file? |
| A. | chgrp |
| B. | chown |
| C. | chmod |
| D. | chusr |
| Answer» C. chmod | |
| 183. |
Which of the following commands can be used to get information about yourself? |
| A. | who am i |
| B. | i /4 |
| C. | pwd |
| D. | which |
| Answer» A. who am i | |
| 184. |
Which of the following commands can be used to get information about all users who are currently logged into the system? |
| A. | which |
| B. | who |
| C. | who am i |
| D. | 1 /u |
| Answer» B. who | |
| 185. |
Which of the following keys is used to overstrike a whole line? |
| A. | r |
| B. | v |
| C. | c |
| D. | u |
| Answer» A. r | |
| 186. |
Which command is used to locate all the .profile files in the system? |
| A. | ls profile |
| B. | find /-name profile print |
| C. | cd /.profile |
| D. | l -u .profile |
| Answer» B. find /-name profile print | |
| 187. |
The File that contains a set of instructions which are performed when a user logs in, is |
| A. | .exrc |
| B. | .profile |
| C. | .autoexec |
| D. | autoexec.bat |
| Answer» B. .profile | |
| 188. |
The octal representation 652 indicates |
| A. | execute permission for the owner |
| B. | write permission for others |
| C. | read and write permission of groups |
| D. | all of the above |
| Answer» B. write permission for others | |
| 189. |
Which of the following command is used to count just the number of lines contained in a file? |
| A. | wc -l |
| B. | wc -c |
| C. | wc -w |
| D. | wc -r |
| Answer» A. wc -l | |
| 190. |
Which command is used to move all files to the bin sub-directory of the parent directory? |
| A. | mv *.* /bin/ |
| B. | mv * /bin/* |
| C. | mv * ../bin |
| D. | mv * ../bin *.* |
| Answer» C. mv * ../bin | |
| 191. |
Which command is used to save the standard output in a file, as well as display it on the terminal? |
| A. | more |
| B. | cat |
| C. | grep |
| D. | tee |
| Answer» D. tee | |
| 192. |
Which of the following commands is used to copy directory structures in and out |
| A. | cp |
| B. | cpio |
| C. | cp - p |
| D. | copy |
| Answer» B. cpio | |
| 193. |
Which command allows you to view your file 24 lines at a time? |
| A. | more |
| B. | pg |
| C. | cat |
| D. | lp |
| Answer» B. pg | |
| 194. |
Which of the following special shell variables is used to process number of the current shell? |
| A. | $! |
| B. | $$ |
| C. | 0 |
| D. | $* |
| Answer» B. $$ | |
| 195. |
Which option is used with cmp command to give a detailed list of the byte number and the differing bytes in octal for each character that differs in both the files? |
| A. | -l |
| B. | -d |
| C. | -r |
| D. | -b |
| Answer» A. -l | |
| 196. |
Which command is used with vi editor scroll half page backward? |
| A. | [control-d] |
| B. | [control - u] |
| C. | [control-c] |
| D. | [control -p] |
| Answer» B. [control - u] | |
| 197. |
Which command is used with vi editor to move cursor forward to first occurrence of character 'ch' in the current line? |
| A. | tch |
| B. | fch |
| C. | rch |
| D. | ech |
| Answer» B. fch | |
| 198. |
Which of the following keys is used to delete the character beneath the cursor? |
| A. | x |
| B. | x |
| C. | dd |
| D. | d |
| Answer» A. x | |
| 199. |
Which command is used to assign only read permission to all three categories of the file 'note'? |
| A. | chmod go+r note |
| B. | chmod a-rw |
| C. | chmod ugo=r note |
| D. | chmod u+r,g+r,o x note |
| Answer» C. chmod ugo=r note | |
| 200. |
Which command will be used with vi editor to append text at end of line? |
| A. | a |
| B. | a |
| C. | i |
| D. | i |
| Answer» A. a | |
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