MCQOPTIONS
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MCQOPTIONS
This section includes 358 Mcqs, each offering curated multiple-choice questions to sharpen your Unix knowledge and support exam preparation. Choose a topic below to get started.
| 301. |
What if the destination file specified in mv command already exists ? |
| A. | it will be deleted |
| B. | it will not be affected |
| C. | it will be overwritten |
| D. | an error will be produced |
| Answer» D. an error will be produced | |
| 302. |
Which command is used for renaming files? |
| A. | rename |
| B. | mv |
| C. | cp |
| D. | move |
| Answer» C. cp | |
| 303. |
Which command is used for removing file named -file.txt? |
| A. | rm –file.txt |
| B. | rm file.txtrm |
| C. | rm — -file.txt |
| D. | rm –f file.txt |
| Answer» D. rm –f file.txt | |
| 304. |
If we wish to delete a remove a file forcefully, we can use ____ option with rm command. |
| A. | -i |
| B. | -r |
| C. | -R |
| D. | -f |
| Answer» E. | |
| 305. |
To delete all files in a directory we use _______ |
| A. | rmdir * |
| B. | mv * |
| C. | rm * |
| D. | del * |
| Answer» D. del * | |
| 306. |
–v option is used with cp command for displaying __ |
| A. | errors |
| B. | informative messages |
| C. | diagnostic messages |
| D. | file contents |
| Answer» C. diagnostic messages | |
| 307. |
–n option is used with cp command for what purpose? |
| A. | existing file should not be overwritten |
| B. | to update file |
| C. | interactive copying |
| D. | recursive copying |
| Answer» B. to update file | |
| 308. |
What does -i option do? |
| A. | interactive copying |
| B. | recursively copying |
| C. | updating |
| D. | none of the mentioned |
| Answer» B. recursively copying | |
| 309. |
What is the correct syntax for copying multiple files with a filename starting as ‘file’ into another file named as ‘directory_one’? |
| A. | cp -i file directory_one |
| B. | cp -R file directory/directory_one |
| C. | cp file* directory_one |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 310. |
Which one of the following commands is incorrect? |
| A. | cat file01 |
| B. | cat > file01 |
| C. | cat >> file1 |
| D. | cat -a file01 |
| Answer» E. | |
| 311. |
What does cat file01 file01 file01 display? |
| A. | error |
| B. | blank terminal |
| C. | contents of file01 three times successively |
| D. | contents of file01 single time |
| Answer» D. contents of file01 single time | |
| 312. |
Which of the following cannot be performed by cat command? |
| A. | displaying files |
| B. | creating files |
| C. | appending files |
| D. | deleting files |
| Answer» E. | |
| 313. |
–t option sorts the files according to __ |
| A. | last modification time |
| B. | last access time |
| C. | ASCII collating sequence |
| D. | file size |
| Answer» B. last access time | |
| 314. |
The output of ls dir* is __ |
| A. | all files in the current directory |
| B. | all files in the directory having filename starting with dir |
| C. | no filename is displayed |
| D. | erroneous |
| Answer» C. no filename is displayed | |
| 315. |
–u option sorts the files according to __ |
| A. | last modification time |
| B. | last access time |
| C. | ASCII collating sequence |
| D. | file size |
| Answer» C. ASCII collating sequence | |
| 316. |
What does the –S option do in ls command? |
| A. | sorts according to modification time |
| B. | sorts according to last access time |
| C. | sorts according to file size |
| D. | sorts according to inode number |
| Answer» D. sorts according to inode number | |
| 317. |
–a option is used with ls command for what purpose? |
| A. | for showing hidden files |
| B. | for showing executables |
| C. | for showing directories |
| D. | for multi columnar output |
| Answer» B. for showing executables | |
| 318. |
For moving two level up in the file hierarchy system using cd command once, we separates ( . . ) by which symbol? |
| A. | ? |
| B. | $ |
| C. | * |
| D. | / |
| Answer» E. | |
| 319. |
$ cp file_01 . copies the file named file_01 in ____ directory |
| A. | current |
| B. | parent |
| C. | root |
| D. | user |
| Answer» B. parent | |
| 320. |
$ cd . . is used to move ___ level up in the file hierarchy. |
| A. | two |
| B. | one |
| C. | three |
| D. | zero |
| Answer» C. three | |
| 321. |
Which command is used for removing an empty directory? |
| A. | mkdir |
| B. | rmdir |
| C. | del |
| D. | remove |
| Answer» C. del | |
| 322. |
Sometimes we are unable to create a directory because __________ |
| A. | the directory may already exist in the current directory |
| B. | there may be a ordinary file by the same name innthe current directory |
| C. | the permissions set for the current directory does not allow the creation |
| D. | the directory may exist, there may be a ordinary file, the permissions set for the current directory does not allow the creation |
| Answer» E. | |
| 323. |
Which command is used for printing the current working directory ? |
| A. | HOME |
| B. | cd |
| C. | pwd |
| D. | dir |
| Answer» D. dir | |
| 324. |
The root directory is represented by _ |
| A. | / |
| B. | \ |
| C. | * |
| D. | $ |
| Answer» B. \ | |
| 325. |
When we log in, the UNIX places us in a directory, called ______ directory |
| A. | home |
| B. | main |
| C. | parent |
| D. | current |
| Answer» B. main | |
| 326. |
Each entry of directory file has component(s) namely __ |
| A. | filename |
| B. | inode number |
| C. | filename and inode number |
| D. | file size |
| Answer» D. file size | |
| 327. |
The most common file type is _ |
| A. | ordinary file |
| B. | directory file |
| C. | device file |
| D. | ordinary file and directory file |
| Answer» B. directory file | |
| 328. |
In how many broad categories, files are divided in UNIX? |
| A. | 2 |
| B. | 4 |
| C. | 5 |
| D. | 3 |
| Answer» E. | |
| 329. |
Which command is used for killing a line? |
| A. | ctrl-k |
| B. | del |
| C. | esc |
| D. | ctrl-u |
| Answer» E. | |
| 330. |
Ctrl-S stops scrolling of screen output and ____ |
| A. | locks terminal |
| B. | delete a character |
| C. | locks keyboard |
| D. | delete a line |
| Answer» D. delete a line | |
| 331. |
Which control unlocks the keyboard? |
| A. | ctrl-u |
| B. | ctrl-c |
| C. | ctrl-z |
| D. | ctrl-q |
| Answer» E. | |
| 332. |
For interrupting a command, we can use __ |
| A. | ctrl-f |
| B. | esc |
| C. | ctrl-h |
| D. | ctrl-c |
| Answer» E. | |
| 333. |
Which command handles a character stream by duplicating its input? |
| A. | tree |
| B. | tee |
| C. | tty |
| D. | ls |
| Answer» C. tty | |
| 334. |
When backspace doesn’t work to erase characters, we can use ___ |
| A. | ctrl-f |
| B. | ctrl-h |
| C. | ctrl-c |
| D. | ctrl-u |
| Answer» C. ctrl-c | |
| 335. |
–h option is used with who command for what purpose? |
| A. | display output with header information. |
| B. | display output with a more detailed version |
| C. | display output with trailer information |
| D. | display output in columnar form |
| Answer» B. display output with a more detailed version | |
| 336. |
Which command is used by the user to change their login password in UNIX? |
| A. | man |
| B. | reset |
| C. | passwd |
| D. | cp |
| Answer» D. cp | |
| 337. |
Which of the following is not an internal command used by mailx? |
| A. | N |
| B. | d |
| C. | q |
| D. | a |
| Answer» E. | |
| 338. |
Which of the following function cannot be performed by mailx command? |
| A. | sending and receiving mails |
| B. | reply to the sender |
| C. | forward, delete and print mails |
| D. | un-send mails |
| Answer» E. | |
| 339. |
script command is used for___ |
| A. | recording history |
| B. | recording our session |
| C. | recording passwords |
| D. | recording scripts |
| Answer» C. recording passwords | |
| 340. |
echo command is used for ___ |
| A. | displaying errors |
| B. | displaying operating system details |
| C. | displaying diagnostic messages |
| D. | displaying date and time |
| Answer» D. displaying date and time | |
| 341. |
Which command is used for displaying date in the format dd/mm/yyyy ? |
| A. | date +%m |
| B. | date +%h |
| C. | date +“%d/%m/%Y” |
| D. | date +“%h %m” |
| Answer» E. | |
| 342. |
What are meta-characters? |
| A. | special characters having predefined meaning to the shell |
| B. | special symbols |
| C. | shell symbols |
| D. | command symbols |
| Answer» B. special symbols | |
| 343. |
What is the output of who command? |
| A. | display information about users who are currently logged in. |
| B. | display file hierarchy |
| C. | display administrator information |
| D. | display processes |
| Answer» B. display file hierarchy | |
| 344. |
Which command is used for displaying date and calendar in UNIX? |
| A. | date and cal |
| B. | DATE and CAL |
| C. | date and calendar |
| D. | dt and cl |
| Answer» B. DATE and CAL | |
| 345. |
What are Commands? |
| A. | specific instructions for performing a particular task |
| B. | part of the operating system |
| C. | part of the shell |
| D. | special instructions |
| Answer» B. part of the operating system | |
| 346. |
What is the windowing system of UNIX known as? |
| A. | X Window system |
| B. | LINUX |
| C. | Red Hat |
| D. | DOS |
| Answer» B. LINUX | |
| 347. |
What is a superuser? |
| A. | system manager |
| B. | normal user |
| C. | administrator |
| D. | a user with special rights |
| Answer» B. normal user | |
| 348. |
TWO_UNIX_SYSTEMS_MAY_OR_MAY_NOT_USE_THE_SAME_SET_OF_SYSTEM_CALLS.?$ |
| A. | True |
| B. | False |
| Answer» C. | |
| 349. |
What is the windowing system of UNIX known as?$ |
| A. | X Window system |
| B. | LINUX |
| C. | Red Hat |
| D. | DOS |
| Answer» B. LINUX | |
| 350. |
What is a superuser?$ |
| A. | system manager |
| B. | normal user |
| C. | administrator |
| D. | a user with special rights |
| Answer» B. normal user | |