Jawaharlal Nehru Technological University Hyderabad 2010-2nd Sem M.C.A -ester Supplementary s OPERATING SYSTEMS - Question Paper

Code No: 32003
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
MCA-II Semester Supplementary exams July 2010
OPERATING SYSTEMS
Time: 3hours Max.Marks:60
ans any 5 ques.
All ques. carry equal Marks
- - -
1. discuss the basic instruction cycle with improper diagram.
2.a) define the differences among short term, medium term and long term
scheduling.
b) discuss briefly about elaborate the problems are to be considered with multithreaded
programs.
3. discuss any 2 techniques for structuring the page table. explain with suitable
examples.
4. discuss different techniques implemented for free space management, explain with
suitable examples.
5. Suppose the head of a moving-head disk with 200 tracks, numbered 0 to 199, is
currently serving a request at track 143 and has just finished a request at track
125. If the queue of requests is kept in FIFO order: 86, 147, 91, 177, 94,
150,102,175,130. What is the total head movement to satisfy these requests for
the subsequent disk scheduling algorithms.
a) FCFS
b) Random
c) PRI
d) SCAN
e) SSTF
f) C-SCAN
6. provide short note about the following:
a) Binary semaphores
b) Bounded Waiting.
7. discuss the subsequent LINUX kernel concurrency mechanisms
a) Atomic Integer Operations
b) Atomic Bitmap Operations.
8.a) discuss the design principles of UNIX.
b) discuss about the inter process communication.

Earning:   Approval pending.