operating system set 4 Detailed Explanation And More Example

Question : 1

• A-Fixed-Head disk,
• B-Movable-Head disk,
• 1- One head per track and al head are mounted on a rigid arm that extends across all tracks.
• 2- Only one head and the head is mounted on the arm, such that it can position the track.

a) A - 1, B - 2

b) A - 2, B - 1

c) A - 1, B - 1

d) A - 2, B - 2

Question : 2

 In three-tier client/server architecture application software match the following:

• A-User machine, 1-Client,
• B- Middle-tier, 2- Application server,
• C- Backend server, 3 Data servers.

a) A - 1, B - 2, C - 3

b) A - 1, B - 3, C - 2

c) A - 2, B - 1, C - 3

d) A - 3, B - 2, C - 1

Question : 3

Match the following for file system architecture: 

• A-Basic file system,
• B-Logical I/O module,
• 1- Deals with blocks of data,
• 2- Deals with file records,
• 3- Provides general purpose record I/O capacity.

a) A - 1, B - 2, 3

b) A - 1, 2, B - 3

c) A - 2, 3, B - 1

d) A - 1, 3, B - 2

Question : 4

In soft real time tasks

a) The dead line is always mandatory.

b) The dead line is desirable but not mandatory.

c) The results are independent of the time, when it took place.

d) None of these.

Question : 5

The following

a) Start? Fetch next instruction? Execute Instruction ? Halt, represents

b) Instruction cycle with interrupt

c) Instruction cycle without interrupt

d) Instruction cycle with two interrupts (E) None of these.

Question : 6

In First-In-First-out (FIFO) replacement policy used in memory management, the page frames to allocated to a process as circular buffer and

a) The most recent page is removed at first

b) The most recent page is removed at the last

c) The most recent page is removed any time

d) None of these