1. UNIX
MULTIPLE CHOICE QUESTION

2. Check your Knowledge
Press to Start

3. 1. The letter "A" (upper case) in ASCII code is
61 hex
41 hex
40 hex
65 hex

4. 2. Hexadecimal is a number system to the base6 10 16 60

5. 3. If you open a Microsoft Word document with a Unix text editor you would see
Garbage
Exactly the same screen as in Microsoft Word
A document modified for Unix

6. 4. The first Unix editor wasVi Vx Ed
emacs

7. 5. The "vi" editor is important to learn because
It is easiest editor to learn
It is the newest editor
It is available on most Unix systems
Both B and C

8. 6. The Vi editor when compared to word processors will seem
Easy to use
Difficult to use
slower
None of the above

9. 7. The Vi editor has 2 separate modes
Input and output
Insert and edit
Edit and command
Input and command

10. 8. To end insert mode and get to edit mode press
Crtl-c
Crtl-d
Escape key
Delete key

11. 9. The run control file in Vi is called
.cshrc
.virc
.bashrc
.exrc

12. 10. Use the following command to save and exit from Vi.
A) ZZ
B) :wq
C) :q!
Both A and B

13. 11. The command syntax to display the file ‘sample
11. The command syntax to display the file ‘sample.txt’ one page at a time is
man sample.txt>more
cat sample.txt<more
cat sample.txt|more
None of these

14. 12. Which one shows the name of the operating system?
uname -n
uname -r
uname -o
uname -m

15. 13. Which command gives the first byte where the difference is in the file1 & file2?
cmp
comm
Is-a

16. 14. To open a file file1 with cursor at line number 4
vi +num file1
vi +set num file1
vi + “set num” file1
vi +/se nu file1

17. 15. What communication command provides communication to another user logged on by writing to the bottom of their terminal?
talk
write
transmit
chat

18. 16. Which command will you use to see the available routes?
Show routes
Show status
netstat -r
None of the mentioned

19. 17. Which of the following is not true
Sorting is done on the basics of first character of each line
Sort command sorts a file word by word rather than line by line
Sort command has s provision to do a numeric sort 
Sort is not filter

20. 18. To change the access time of a file to 12:40 PM on 26th Jan 1997 the command would be
Touch –a file
Touch –a file
Touch –a file
Touch –a file 

21. 19. The command to search the pattern “Hi there” in file I would be
Grep “Hi there” file 1
Grep Hi there file 1
Grep \<Hi there\> file1 
Grep ‘Hi there’ file 1

22. 20. The command head f1 would display
First line of the file f1 
First 10 lines of the file f1 
Nothing
The whole file f1 

23. 21. After you have entered text in your file, to save and quit vi you will use
Esc shift ZZ
Shift ZZ
Esc:q Enter 
None of these

24. 22. To search a pattern which starts with uni the command would be

25. 23. In command :l,.s/part/PART/g,g stands for
grep
Global
A numeric value which is to be substituted by a number 
Ignore case whilesearching

26. 24. An example of a LAN network
Groups of geographically dispersed machines
Computers in a single building networked together
Several LANs spread over several states networked together
The internet

27. 25. Which of the following is not a network topology?
Diamond
Star
Ring
Hub

28. 26. Most Ethernet networks use the
Bus topology
Ring topology
Hub topology
Diamond topology

29. 27. Which topology is increasing in popularity?
Ring
Bus
Star
Hub

30. 28. In an Ethernet network, which kind of cable is both affordable and widely used?
Thin coaxial
Thick coaxial
Twisted pair
Fiber optics

31. 29. Ethernet networks which use coaxial cable
Use hubs
Do not use hubs
Are expensive
The cable is flexible

32. 30. Which of the following is not true about the "router".
Uses very little machine CPU cycles
Determine the destination of packet
Most popular routers are Cisco routers
Ordinary personal computers can be made into routers

33. 31. Domain Name Servers are required to translate alphabetical machine names into
Packets
Routers
IP numbers
Hubs

34. 32. When we are executing a shell script the shell acts asa
32. When we are executing a shell script the shell acts asa. An interpreter 
Interpreter
Compiler
An operating system
None of these

35. 33. On executing a statement set -3+1
$1 would be -3 
$1 would be -
$1 would be set 
Error

36. 34. Which of the following is NOT a shell keyword
Shift
Randomly
Unset Is

37. 35. The statement z=’expr 5/2’ would store in z a value
2.5 3 2

38. 36. The expression expr -7 % 2evaluates to1 -1
-3.5

39. 37. Hierarchy decides which operator
Is most important
Is use first
Is fastest
Operates on largest numbers

40. 38. The command is used to compare the files is known as
cmp
ccp Do

41. 39. Which command is used to terminate a process
Shutdown
haltsys
Cancel
Kill

42. 40. Which option will be used with sort command to start sorting after the nth column of the (m+1)th field
+m.n 
–m.n 
+n.m+1 
+(m+1).n

43. 41. The cp command uses Standard input file Standard output file
Both input and output file
Neither input nor output file

44. 42. What special variable has the exit status?$? $# !$ $*

45. 43. Another name for exit status is
Exit code
Return code
Return value
Quit value

46. 44. Passing information between programs is called.
Program intertalk
Program communication
Interprocess communication
Task communication

47. 45. A more complete means of communication between programs is called.
Flags
Chat
Signals

48. 46. A signal trap is a set of instruction
In the initialing process
In between the communicating processes
In the receiving process
None of the above

49. 47. Each signal name begins with the letters
None of the above

50. 48. Which special variable contains the PID of its own process?
$job $$ $
$ps

51. 49. Which signal is used to kill a running process?

52. 50. Which variable gives the exit status of the last command executed in the shell?$* $! $?

53. The Results