MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The first process launched by the linux kernel is ___________ |
| A. | init process |
| B. | zombie process |
| C. | batch process |
| D. | boot process |
| Answer» B. zombie process | |
| 2. |
Linux uses a time-sharing algorithm ___________ |
| A. | to pair preemptive scheduling between multiple processes |
| B. | for tasks where absolute priorities are more important than fairness |
| C. | all of the mentioned |
| D. | none of the mentioned |
| Answer» B. for tasks where absolute priorities are more important than fairness | |
| 3. |
How many types of Linux files are typically used? |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» D. 5 | |
| 4. |
Which character is known as a root directory? |
| A. | ^ |
| B. | & |
| C. | && |
| D. | / |
| Answer» E. | |
| 5. |
Which of the following are grouped into directories and subdirectories? |
| A. | register |
| B. | memory |
| C. | files |
| D. | routines |
| Answer» D. routines | |
| 6. |
Which of the following is an alternate source of UNIX? |
| A. | MS-DOS |
| B. | Windows 3.1 |
| C. | Windows NT |
| D. | Linux |
| Answer» B. Windows 3.1 | |
| 7. |
Which of the following is a UNIX clone? |
| A. | XENIX |
| B. | Windows 3.1 |
| C. | Windows NT |
| D. | Linux |
| Answer» B. Windows 3.1 | |
| 8. |
Which of the following is the first version of the UNIX operating system? |
| A. | PDP-2 |
| B. | Linux |
| C. | MS-DOS |
| D. | PDP-7 |
| Answer» E. | |
| 9. |
What does MULTICS stand for? |
| A. | multiplexed information and computing service |
| B. | multiplexed information and code service |
| C. | multiplexed inter-access code service |
| D. | multiplexed inter-code sensor |
| Answer» B. multiplexed information and code service | |
| 10. |
Who had first described UNIX in an article? |
| A. | Ken Thompson |
| B. | Dennis Ritchie and Ken Thompson |
| C. | Dennis Ritchie |
| D. | Linus Torvalds |
| Answer» C. Dennis Ritchie | |
| 11. |
Which of the following is similar to UNIX OS? |
| A. | Windows NT |
| B. | MS-DOS |
| C. | Linux |
| D. | Windows 3.1 |
| Answer» D. Windows 3.1 | |
| 12. |
Who started Linux first as a personal project? |
| A. | Linus Torvalds |
| B. | Ken Thompson |
| C. | Dennis Ritchie |
| D. | John Dell |
| Answer» B. Ken Thompson | |
| 13. |
Whenever non-static member functions are called _____________ |
| A. | Address of the object is passed implicitly as an argument |
| B. | Address of the object is passed explicitly as an argument |
| C. | Address is specified globally so that the address is not used again |
| D. | Address is specified as return type of the function |
| Answer» B. Address of the object is passed explicitly as an argument | |
| 14. |
Which feature can be implemented using encapsulation? |
| A. | Inheritance |
| B. | Abstraction |
| C. | Polymorphism |
| D. | Overloading |
| Answer» C. Polymorphism | |
| 15. |
Sysconf(_SC_PAGE_SIZE) returns? |
| A. | size of the page |
| B. | max size of the page |
| C. | min size of the page |
| D. | paging allowed or not |
| Answer» B. max size of the page | |
| 16. |
shared memory can be used for? |
| A. | read only operations |
| B. | append |
| C. | read or read write operations |
| D. | write only |
| Answer» D. write only | |
| 17. |
The terminal used by a Daemon process is: |
| A. | any terminal |
| B. | no terminal |
| C. | root terminal |
| D. | system console |
| Answer» C. root terminal | |
| 18. |
Daemon process is a? |
| A. | group leader |
| B. | Session leader |
| C. | orphan process |
| D. | all of the mentioned |
| Answer» E. | |
| 19. |
______________ timer is decremented only when the process is executing |
| A. | ITIMER_REAL |
| B. | ITIMER_VIRTUAL |
| C. | ITIMER_PROF |
| D. | None of the mentioned |
| Answer» C. ITIMER_PROF | |
| 20. |
x86 architecture uses big endian or little endian addressing mechanism? |
| A. | little-endian |
| B. | endian |
| C. | big-endian |
| D. | none of the mentioned |
| Answer» B. endian | |
| 21. |
Which of the following exec call is a system call? |
| A. | execl |
| B. | execlp |
| C. | execve |
| D. | execvp |
| Answer» D. execvp | |
| 22. |
System call can be implemented using which assembly instruction(s) on x86 processors? |
| A. | int 0×80 |
| B. | sysenter |
| C. | both int 0×80 & sysenter |
| D. | both int 0×80 & sysenter |
| Answer» D. both int 0×80 & sysenter | |
| 23. |
Section 2 of manpage describes |
| A. | Commands |
| B. | System calls |
| C. | Function calls |
| D. | Drivers |
| Answer» C. Function calls | |
| 24. |
Pick the run level to run Linux in multi user mode with networking? |
| A. | 0 |
| B. | 3 |
| C. | 5 |
| D. | 6 |
| Answer» C. 5 | |
| 25. |
Runlevel system command is used for? |
| A. | getting the present and previous runlevel of the system |
| B. | setting the runlevel attribute of the system in the inittab file |
| C. | can be used to restart or reboot the system |
| D. | all of the mentioned |
| Answer» E. | |
| 26. |
Monolithic kernel |
| A. | is highly extensiblity |
| B. | has less run time overhead |
| C. | smaller than micro level |
| D. | suitable for real time system |
| Answer» C. smaller than micro level | |
| 27. |
UNIX/Linux kernel is? |
| A. | Monolithic |
| B. | Micro |
| C. | Exo |
| D. | Nano |
| Answer» B. Micro | |
| 28. |
A communication end-point is identified by |
| A. | ip address |
| B. | port number |
| C. | both IP address and port number |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 29. |
A server which is handling many clients at a time is called as |
| A. | single server |
| B. | multiserver |
| C. | concurrent server |
| D. | iterative server |
| Answer» D. iterative server | |
| 30. |
A server which is handling one client at a time is called as |
| A. | single server |
| B. | multiserver |
| C. | concurrent server |
| D. | iterative server |
| Answer» E. | |
| 31. |
Race condition can be avoided by using |
| A. | semaphore |
| B. | mutex |
| C. | socket |
| D. | both semaphore & mutex |
| Answer» E. | |
| 32. |
Which call to use to set the resource count of semaphore? |
| A. | semget( ) |
| B. | semctl( ) |
| C. | sem_setcount( ) |
| D. | sem_set_count( ) |
| Answer» E. | |
| 33. |
Semaphore P( ) operation usually does the following: |
| A. | descrements the semaphore count and the process sleeps if needed |
| B. | increments the semaphore count |
| C. | wakes up a sleeping process |
| D. | none of the mentioned |
| Answer» B. increments the semaphore count | |
| 34. |
One process requires M resource to complete a job. What should be the minimum number of resources available for N processes so that at least one process can continue to execute without blocking/waiting? |
| A. | M * N |
| B. | M * N – 1 |
| C. | M * N + 1 |
| D. | M |
| Answer» E. | |
| 35. |
The structure which keeps the information about shared memory in the kernel is |
| A. | struct ipc_perm |
| B. | struct semid_ds |
| C. | struct shmid_ds |
| D. | struct msgid_ds |
| Answer» D. struct msgid_ds | |
| 36. |
What is the persistancy level of Shared memory segments? |
| A. | signal |
| B. | process |
| C. | file system |
| D. | kernel |
| Answer» E. | |
| 37. |
Which is Fastest IPC? |
| A. | Message Queue |
| B. | shared memory |
| C. | Socket |
| D. | All of the mentioned |
| Answer» C. Socket | |
| 38. |
Command used to check shared memory is |
| A. | ipcs |
| B. | ipcs - m |
| C. | ipcs -s |
| D. | ipcs -q |
| Answer» C. ipcs -s | |
| 39. |
Message queues are created in |
| A. | userspace |
| B. | kernelspace |
| C. | userspace & kernelspace |
| D. | none of the mentioned |
| Answer» C. userspace & kernelspace | |
| 40. |
Which is not the correct option for removing a message queue |
| A. | ipcrm -Q |
| B. | ipcrm -q |
| C. | ipcrm -m |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 41. |
Which system call is used to create Sys V message Queue. |
| A. | msgget |
| B. | shemget |
| C. | semget |
| D. | msgctl |
| Answer» B. shemget | |
| 42. |
Which one of the following is not system V IPC ? |
| A. | Shared Memory |
| B. | Semaphores |
| C. | FIFO |
| D. | Message Queues |
| Answer» D. Message Queues | |
| 43. |
System V IPC common attributes are |
| A. | key |
| B. | id |
| C. | owner |
| D. | all of the mentioned |
| Answer» E. | |
| 44. |
What mkfifo() creats? |
| A. | pipe |
| B. | unnamed pipe |
| C. | named pipe |
| D. | msg queue |
| Answer» D. msg queue | |
| 45. |
Advantage of FIFO over pipe is |
| A. | related processes can communicate |
| B. | unrelated processes can communicate |
| C. | all of the mentioned |
| D. | none of the mentioned |
| Answer» C. all of the mentioned | |
| 46. |
The persistancy of a FIFO is |
| A. | process |
| B. | kernel |
| C. | file system |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 47. |
Which is true regarding pipes? |
| A. | half duplex |
| B. | full duplex |
| C. | message boundaries are preserved |
| D. | unordered data |
| Answer» B. full duplex | |
| 48. |
Default action of SIGSEGV is |
| A. | Terminate |
| B. | Core dump + Terminate |
| C. | Stop |
| D. | Cont |
| Answer» C. Stop | |
| 49. |
Signals are handled using which system call? |
| A. | kill |
| B. | Signal |
| C. | both |
| D. | none |
| Answer» C. both | |
| 50. |
When real interval timer expires which signal is generated? |
| A. | SIGINT |
| B. | SIGCHLD |
| C. | SIGKILL |
| D. | SIGALRM |
| Answer» E. | |