Operating System Architecture Mock Test

1. What is an internal command in Unix ?

2. The game program,"space travel"for GECOS system was written in

3. How many line are there are in the result of date command

4. what is the relationship of a filename to its inode

5. what is the use of exec command

6. Buffering mechanisms regulated the data between

7. What does OSS stand for

8. What does command LS do

9. A thread is a ____ process

10. Which is the carrect command to list files & folders in unix

11. Which of the following is used to write disk block images from memory to disk

12. A RAID system is useful because --

13. Programs like shell and editors (ed and vi) interact with the kernal by invoking

14. Unix os was first rewritten in C in

15. The text formatting program traff

16. Among the directory entries inode and file contents which will be changed when a file is updated

17. Why is PWD used

18. The system acctcom accounting program

19. Internal or external command is checked using

20. NFS stands for

21. is used to stop a process

22. How many fields are there in /etc/passwd file

23. Which of the following sections of an executable binary file has all un initialized data items

24. grep means

25. How can you display a list of files including hidden files

26. The Hardware at centre of UNIX system provides

27. Unix system treats devices as a

28. Operating System is also called as

29. Non leaf node of the file system structure is

30. Permission mode on newly created file will be

31. Full path name starts with

32. Permission mode 0666(octal) means

33. Which of the following commands is used to rename a file?

34. Text formatting program troff find __character at the end of each line

35. Which command is used to display a file contents in octal form?

36. System accounting program acctcom find

37. Which command is used to display the device name of the terminal you are using?

38. Which of the following is not a communication command?

39. Directories are

40. Which command is used to remove a directory?

41. Program such as Shell and editors interact with kernel by invoking

42. Which of the following file names can be found in more than one directory?

43. Which command allows you to view your file 24 lines at a time ?

44. The command that can be used to restrict incoming messages to a user is

45. The tail command in UNIX

46. responsible for exchanging data between kernel and programs

47. The open and create system calls returns an integer called a

48. what is a.out ?

49. The sort command in UNIX

50. Which of the following commands is used for an automatic remainder service?

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