UNIX MODEL PAPER

PVP-14

Code : IT5T1

III B.Tech – I Semester- Regular Examination

UNIX

Model Paper

Duration: 3 hours                                                                                            Max. Marks: 70

PART - A

Answer all the questions. All questions carry equal marks

            11 x 2 = 22M

a)      Summarize  the features of UNIX? (L2) -CO1

b)      Compare cp and mv commands with example? (L2) -CO1

c)      Demonstrate the following commands a) who b) uniq. (L2) -CO1

d)     Demonstrate $# variable in bourne shell. (L3) –CO2

e)      Calculate ((2+3\2)*3) using expr. (L3) –CO2

f)       Write the syntax of opendir? (L2) –CO3

g)      Explain fseek system call. (L2) –CO3

h)      Illustrate fork system call? (L3) –CO4

i)        Demonstrate zombie process? (L3) –CO4

j)        Give example for sleep function. (L2) –CO5

k)      Discuss advantages of Named Pipes. (L2) –CO5

PART-B

Answer any THREE questions. All questions carry equal marks      3 x 16 = 48M

2. a) Discuss briefly on the following UNIX commands(L2) -CO1                                      8M

       i) date                   ii) ps                iii) cat              iv) man

    b)  Explain briefly about file permission in UNIX (L2) -CO1                                           8M

3.  Summarize  control structures in Bourne shell(L3) –CO2                                   16M

4.  Discuss the following with suitable example(L2) –CO3                                                 16M

      i) fopen ()              ii) fflush ()                   iii) fgetc ()       iv) putc ()

5. a) Demonstrate  different states in process structure(L3) –CO4                                        8M

    b) Classify System Calls and Illustrate any four system calls with examples(L3) –CO4   8M

6. Demonstarte Inter Process Communication with suitable example (L2) –CO5               16M