Himachal Pradesh University (HPU) 2011 B.C.A Computer Application Hp university 2nd of operating system - Question Paper

BCA second YEAR exam
OPERATING SYSTEM

SECTION-I
1> describe operating system and exlpain the subsequent kind of operating system:
a) batch system
b) time sharing system
c) distributed system
d) real time system

2> discuss the different functions and services of the operating system.

SECTION-II
3> discuss the subsequent process scheduling algorithms:
i) FCFS
ii) SJF
iii) Multilevel Scheduling.
iv) Priority Scheduling.

4> elaborate the necessary conditions for deadlock occurance? discuss the deadlock detection technique.

SECTION-III
5> discuss the segmentation system of memory management in detail.

6> a)Describe the subsequent allocation algorithms:
i) 1st Fit.
ii) Best FIT.
iii) Worst Fit.
b) discuss the difference ranging from : internal and external fragmentation.
c) discuss the concept of virtual memory.

SECTION-IV
7> discuss the different directory structures used in operating system for file storage. discuss every with its merits and demerits.
8> discuss the different file allocation methods.

SECTION-V
9> Attempt the subsequent :
(a) Name the different file attributes.
(b) Consider a logical-address space of 8 pages of 1024 words each, mapped onto a physical memory of 32 frames.
i)How many bits are in logical address?
ii)How many bits in the physical address?
(c) elaborate the different methods which can be used to recover from deadlock?
(d) discuss the life-cycle of the Process diagrammatically.

Earning:   Approval pending.