MCQOPTIONS
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MCQOPTIONS
This section includes 713 Mcqs, each offering curated multiple-choice questions to sharpen your Computer Science Engineering (CSE) knowledge and support exam preparation. Choose a topic below to get started.
| 351. |
which to mount the file system |
| A. | root |
| B. | boot |
| C. | mount-point |
| D. | partition |
| Answer» D. partition | |
| 352. |
Which file contains the filesystems to be automatically mounted during boot? |
| A. | /etc/mount |
| B. | /etc/fstab |
| C. | /etc/inittab |
| D. | /etc/boot |
| Answer» C. /etc/inittab | |
| 353. |
Which filesystem can be used to change certain kernel parameters at runtime using sysctl command? |
| A. | ext3 |
| B. | sysfs |
| C. | ext4 |
| D. | procfs |
| Answer» E. | |
| 354. |
Filesystem for CDROM is: |
| A. | ext3 |
| B. | sysfs |
| C. | ext4 |
| D. | procfs |
| Answer» D. procfs | |
| 355. |
Which among the following allows fast file system recovery? |
| A. | ext2 |
| B. | journaling |
| C. | caching |
| D. | sysfs |
| Answer» C. caching | |
| 356. |
Which file system has journaling capability? |
| A. | ext2 |
| B. | ext4 |
| C. | isofs |
| D. | procfs |
| Answer» C. isofs | |
| 357. |
Which is an example for block special file? |
| A. | virtual terminal |
| B. | cd-rom |
| C. | terminal |
| D. | serial modem |
| Answer» C. terminal | |
| 358. |
Which command is used to check filesystem usage in a system? |
| A. | mount |
| B. | df |
| C. | du |
| D. | dd |
| Answer» C. du | |
| 359. |
Which is an example for character special file? |
| A. | hard disk |
| B. | cd-rom |
| C. | terminal |
| D. | memory |
| Answer» D. memory | |
| 360. |
Which of the following is not correct statement regarding file types? |
| A. | hard links share same inode number |
| B. | soft links cannot be created across partitions |
| C. | socket files are unix domain sockets |
| D. | character file is a special file |
| Answer» C. socket files are unix domain sockets | |
| 361. |
Which of the following is not a valid file type on Linux |
| A. | socket |
| B. | softlink |
| C. | inode |
| D. | fifo |
| Answer» D. fifo | |
| 362. |
Which are the two types of device files? |
| A. | character & block |
| B. | character & socket |
| C. | block & fifo |
| D. | input & output |
| Answer» B. character & socket | |
| 363. |
The directory file contains |
| A. | file names & file sizes |
| B. | file names & inode numbers |
| C. | file names & address |
| D. | file names & permissions |
| Answer» C. file names & address | |
| 364. |
Binary or executable files are: |
| A. | regular files |
| B. | device files |
| C. | special files |
| D. | directory files |
| Answer» B. device files | |
| 365. |
Which directory contain device special files? |
| A. | /etc |
| B. | /etc/dev |
| C. | /root/bin |
| D. | /dev |
| Answer» E. | |
| 366. |
srwxr-xrw- is a |
| A. | internet socket file |
| B. | unix domain socket file |
| C. | symbolic link |
| D. | shared file |
| Answer» C. symbolic link | |
| 367. |
When you use the ln command, which of the following occurs? |
| A. | a file is created that points to an existing file |
| B. | a file is created that is a copy of an existing file |
| C. | a file is moved from one location to another |
| D. | a file is renamed |
| Answer» B. a file is created that is a copy of an existing file | |
| 368. |
. The file permission 764 means: |
| A. | every one can read, group can execute only and the owner can read and write |
| B. | every one can read and write, but owner alone can execute |
| C. | every one can read, group including owner can write, owner alone can execute |
| D. | every one can read and write and execute |
| Answer» D. every one can read and write and execute | |
| 369. |
If a file is removed in Unix using ‘rm’ then |
| A. | the file can be recovered by a normal user |
| B. | the file cannot be recovered by a user |
| C. | the file can be fully recovered provided the sytem is not rebooted |
| D. | the file will be moved to /lost+found directory and can be recovered only by administrator’s |
| Answer» C. the file can be fully recovered provided the sytem is not rebooted | |
| 370. |
The command chmod 4777 a.out |
| A. | will set the suid bit of a.out |
| B. | will set the suid bit of a.out only if the command is issued by root |
| C. | is not a valid command |
| D. | will set the sticky bit of a.out |
| Answer» B. will set the suid bit of a.out only if the command is issued by root | |
| 371. |
Which of the following umask settings doesn’t allow execute permission to be set by default on directory files |
| A. | 222 |
| B. | 111 |
| C. | 444 |
| Answer» D. | |
| 372. |
What does chmod +t do? |
| A. | wrong syntax |
| B. | set effective userid for filename |
| C. | set effective groupid for filename |
| D. | set the sticky bit |
| Answer» E. | |
| 373. |
If you are a root user, how can you grand execute permission only for the owner of the file project1? |
| A. | chmod +x project1 |
| B. | chmod u+x project1 |
| C. | chmod a+x project1 |
| D. | chmod u+x project1 |
| Answer» C. chmod a+x project1 | |
| 374. |
Which of these commands will set the permissions on file textfile to read and write for the owner, read for the group, and nothing for everyone else? |
| A. | chmod 046 textfile |
| B. | chmod 640 textfile |
| C. | chmod 310 textfile |
| D. | chmod rw r nil textfile |
| Answer» C. chmod 310 textfile | |
| 375. |
A user executes the following command successfully:$ chmod +x file1.txt Which of the following is true of the output of this command? |
| A. | he command results in adding execute permission to the user who ran this command |
| B. | the command results in adding execute permission for the owner of the file |
| C. | the command results in an error since the file is not an executable file |
| D. | the command results in adding execute permission for all users (i.e., user,group & others) |
| Answer» E. | |
| 376. |
Given the command $ chmod o-w datafile |
| A. | sets write permission to everyone for datafile |
| B. | sets write permission to others for datafile |
| C. | clears write permission to everyone for datafile |
| D. | lears write permission to others for datafile |
| Answer» E. | |
| 377. |
Which command is used to assign read- write permission to the owner? |
| A. | chmod a+r file |
| B. | chmod o+r file |
| C. | chmod u=rw file |
| D. | chmod og-r file |
| Answer» D. chmod og-r file | |
| 378. |
With a umask value of 112, what is the default permission assigned to newly created regular file? |
| A. | —x–x-wx |
| B. | -rw-rw-r– |
| C. | -r-xr-x-r– |
| D. | -rw-rw-r– |
| Answer» E. | |
| 379. |
What is the command to set the execute permissions to all the files and subdirectories within the directory /home/user1/direct |
| A. | chmod –r +x /home/user1/direct |
| B. | chmod –r +x /home/user1/direct |
| C. | chmod –f –r +x /home/user1/direct |
| D. | chmod –f +x /home/user1/dire ct |
| Answer» C. chmod –f –r +x /home/user1/direct | |
| 380. |
The permission -rwxr-xr-t represented in octal expression will be |
| A. | 777 |
| B. | 1755 |
| C. | 1754 |
| D. | 2754 |
| Answer» C. 1754 | |
| 381. |
A user does a chmod operation on a file. Which of the following is true? |
| A. | the last accessed time of the file is updated |
| B. | the last modification time of the file is updated |
| C. | the last change time of the file is updated |
| D. | none of the above |
| Answer» D. none of the above | |
| 382. |
f user tries to remove (rm) a readonly file (444 permission), what will happen? |
| A. | the file is removed successfully (and silently) |
| B. | the rm command prompts for a confirmation, the command is successful upon confirmation |
| C. | he rm command prompts for a confirmation, however the operation fails because of insufficient permissions |
| D. | the rm command fails because of insufficient permissions |
| Answer» C. he rm command prompts for a confirmation, however the operation fails because of insufficient permissions | |
| 383. |
The permission -rwSr–r– represented in octal expression will be |
| A. | 777 |
| B. | 2666 |
| C. | 4744 |
| D. | 4644 |
| Answer» E. | |
| 384. |
The permission -rwxr-sr– represented in octal expression will be |
| A. | 777 |
| B. | 2766 |
| C. | 2744 |
| D. | 2754 |
| Answer» E. | |
| 385. |
Effective user id can be set using following permission |
| A. | 777 |
| B. | 2666 |
| C. | 4744 |
| D. | 1711 |
| Answer» D. 1711 | |
| 386. |
Effective group id can be set using following permission |
| A. | 777 |
| B. | 2666 |
| C. | 4744 |
| D. | 1711 |
| Answer» C. 4744 | |
| 387. |
The permission -rwxr–r– represented in octal expression will be |
| A. | 777 |
| B. | 666 |
| C. | 744 |
| D. | 711 |
| Answer» D. 711 | |
| 388. |
The file permission 764 means |
| A. | every one can read, group can execute only and the owner can read and write |
| B. | every one can read and write, but owner alone can execute |
| C. | every one can read, group including owner can write, owner |
| D. | every one can read and write and execute |
| Answer» D. every one can read and write and execute | |
| 389. |
Any file’s attribute information is stored in which structure on the disk |
| A. | inode |
| B. | data blocks |
| C. | file blocks |
| D. | directory file |
| Answer» B. data blocks | |
| 390. |
What command is used to copy files and directories? |
| A. | copy |
| B. | cp |
| C. | rn |
| D. | cpy |
| Answer» C. rn | |
| 391. |
When mv f1 f2 is executed which file’s inode is freed? |
| A. | f1 |
| B. | f2 |
| C. | new inode will be used |
| D. | mplementation dependent |
| Answer» C. new inode will be used | |
| 392. |
How do you rename file “new†to file “old� |
| A. | mv new old |
| B. | move new old |
| C. | cp new old |
| D. | rn new old |
| Answer» B. move new old | |
| 393. |
Executing the ‘cd ..’ command when at the root level causes |
| A. | error message indicating the user can’t access beyond the root level |
| B. | behavior is unix- flavor dependent |
| C. | results in changing to the ‘home’ directory |
| D. | nothing happens |
| Answer» E. | |
| 394. |
Which represents the user home directory |
| A. | / |
| B. | . |
| C. | .. |
| D. | ~ |
| Answer» E. | |
| 395. |
f a file is removed in Unix using ‘rm’ then |
| A. | the file can be recovered by a normal user |
| B. | the file cannot be recovered by a user |
| C. | the file can be fully recovered provided the sytem is not rebooted |
| D. | he file will be moved to /lost+found directory and can be recovered only by administrator’s intervention |
| Answer» C. the file can be fully recovered provided the sytem is not rebooted | |
| 396. |
Which option of rmdir command will remove all directories a, b, c if path is a/b/c |
| A. | –b |
| B. | –o |
| C. | –p |
| D. | –t |
| Answer» D. –t | |
| 397. |
Which command is used to set limits on file size |
| A. | fsize |
| B. | flimit |
| C. | ulimit |
| D. | usize |
| Answer» D. usize | |
| 398. |
Which of the following time stamps need not exist for a file on traditional unix file system |
| A. | access time |
| B. | modification time |
| C. | creation time |
| D. | change time |
| Answer» D. change time | |
| 399. |
What UNIX command is used to update the modification time of a file? |
| A. | time |
| B. | modify |
| C. | cat |
| D. | touch |
| Answer» E. | |
| 400. |
Where can I find the printer in the file structure? |
| A. | /etc |
| B. | /dev |
| C. | /lib |
| D. | /printer |
| Answer» C. /lib | |