operating system set 4 Detailed Explanation And More Example

Question : 1

Physical address (absolute address) in memory partitioning is

a) Actual location in main memory

b) A reference to memory location independent of current assignment

c) A logical address

d) None of these.

Question : 2

An unpaged cache associates disk domains with the address of the read and continues for a specific length. The major disadvantage of unpaged cache is that

a) it allows cache domain to contain redundant data

b) it does not allow writes to be cached

c) its access time is greater than that of paged caching

d) read ahead cache domain blocks are necessarily fixed in size

Question : 3

In the pure User Level Threads (ULT) (i) Thread management is done by application, (ii) Thread management is done by kernel, (iii) Kernel is not aware of the existence of thread, (iv) Application program interface (API) to the kernel thread facility.

a) i, iii are true

b) i, ii and iii are true

c) All are false

d) None of these are true

Question : 4

 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 : 5

• 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 : 6

Allocate the first hole that is big enough is called

a) first fit

b) best fit

c) worst fit

d) all of the above