Download JNTUA MCA 2014 Oct Supply 4th Sem 06MC405C Systems Programming Question Paper

Download JNTUA (JNTU Anantapur) MCA (Master of Computer Applications) 2014 Sept-Oct Supplementary 4th Sem 06MC405C Systems Programming Question Paper

Code: 06MC405C
MCA IV Semester Supplementary Examinations September/October 2014
SYSTEMS PROGRAMMING
(For students admitted in 2008 only)
Time: 3 hours Max Marks: 60
Answer any FIVE questions
All questions carry equal marks
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1 (a) Differentiate between :
(i) Kernel modules and application programs.
(ii) Policy and mechanism.
(b) What is the reason for splitting the kernel?s role into various tasks?

2 (a) Define a SCULL. What are the various types of devices that are implemented by the
SCULL source?
(b) Give the procedure for registering and unregistering a char device into the module.

3 Describe various debugging techniques in the Linux kernel.

4 Explain the following system calls related memory management.
(a) brk( )
(b) kmalloc ( )
(c) vmalloc ( )
(d) malloc ( )

5 Explain briefly about Spinlocks & Completions and various system calls associated with
them.

6 (a) Explain the functions related to declare register and remove kernel timers.
(b) What is a tasklet? Explain the purpose of a tasklet.

7 (a) Explain how spinlocks and circular buffers are used to protect data from concurrent access.
(b) Explain various string functions available in Linux kernel for using I/O ports.

8 Describe the procedure for implementation llseek ( ) system call with a sample code.
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