Jawaharlal Nehru Technological University Hyderabad 2009-2nd Sem B.Tech Information Technology , Code No: 07A40502 Set No1 II Regular s, / OPERATING SYSTEMS - Question Paper

Code No: 07A40502 Set No. 1
II B.Tech II Semester Regular Examinations, Apr/May 2009
OPERATING SYSTEMS
(Information Technology)
Time: three hours Max Marks: 80
ans any 5 ques.
All ques. carry equal marks
? ? ? ? ?
1. How layered approach is used in designing operating system. [16]
2. discuss in detail about interprocess communication. [16]
3. How do you resume processes with in a monitor. [16]
4. discuss any 1 technique in which a process is allocated memory wherever it is
available. [16]
5. (a) elaborate the dimensions on which the devices vary?
(b) Write brief notes on streams. [8+8]
6. (a) provide a detailed description of acyclic graph directories. elaborate the issues
with such a structure?
(b) elaborate the implications of supporting UNIX consistency semantics for
shared access for those files that are stored on remote file systems? [8+8]
7. (a) discuss the physical structure of a magnetic disk.
(b) discuss about network-attached storage device. What is its drawback? [8+8]
8. (a) discuss in detail about “Hydra”.
(b) Write short notes on the following:
i. One-time passwords
ii. Biometrics.

Earning:   Approval pending.