The _____ table contains the base address of each page in physical memory.

In a paged memory, the page hit ratio is 0.35. The required to access a page in secondary memory is equal to 100 ns. The time required to access a page in primary memory is 10 ns. The average time required to access a page is?

A

3.0 ns

B

68.0 ns

C

68.5 ns

D

78.5 ns

A multilevel page table is preferred in comparison to a single level page table for translating virtual address to physical address because ____________

A

it reduces the memory access time to read or write a memory location

B

it helps to reduce the size of page table needed to implement the virtual address space of a process

C

it is required by the translation lookaside buffer

D

it helps to reduce the number of page faults in page replacement algorithms

If the size of logical address space is 2 to the power of m, and a page size is 2 to the power of n addressing units, then the high order _____ bits of a logical address designate the page number, and the ____ low order bits designate the page offset.

A

m, n

B

n, m

C

m – n, m

D

m – n, n

Applying the LRU page replacement to the following reference string. 1 2 4 5 2 1 2 4 The main memory can accommodate 3 pages and it already has pages 1 and 2. Page 1 came in before page 2. How many page faults will occur?

A

2

B

3

C

4

D

5

Which daemon manages the physical memory by moving process from physical memory to swap space when more physical memory is needed.

A

Sched daemon

B

Swap daemon

C

Init daemon

D

Process daemon

Suppose, you begin reading a book on page h and end on page k. If you read each page completely and the pages are numbered and read consecutively, then how many page shave you read?

A

h+k

B

h-k

C

k-h+2

D

k-h-1

When they had a meeting seven company executives __ T, U, V, W, X, Y and Z ___ sit at a rectangular table .Three executives sit along one side of the table , and three sit along the other side, each directly opposite one of the other three. The seventh sits at the head of the table . There is no seat at the foot of the table . Ualways sits in one of te two seats farthest from the head of the table. Y and V always sit next to each other .V never sits next to Z . If Z does not sit at the head of the table, W sits there. If W sits directly opposite T, X must sit next to which of the following excutives?

A

T

B

U

C

V

D

Z

Which two statements describe the IP address 10.16.3.65/23?
1. The subnet address is 10.16.3.0 255.255.254.0.
2. The lowest host address in the subnet is 10.16.2.1 255.255.254.0.
3. The last valid host address in the subnet is 10.16.2.254 255.255.254.0.
4. The broadcast address of the subnet is 10.16.3.255 255.255.254.0.

A

1 and 3

B

2 and 4

C

1, 2 and 4

D

2, 3 and 4

E

2 and 5 only

In the following passage some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the four alternatives. The quest for a _____ life engrosses every human being on this earth. Everyman tends to define a happy life in a _____ individualistic fashion. _____have attempted to define a happy life in various terms. Hedonists have a _____ notion that happiness lies in the _____ of physical appetites. that happiness lies in the _____ of physical appetites.

A

gratification

B

simplification

C

purification

D

identification

interface Base{ boolean m1 (); byte m2(short s);}

which two code fragments will compile?

1. interface Base2 implements Base {}2. abstract class Class2 extends Base { public boolean m1(){ return true; }}3. abstract class Class2 implements Base {}4. abstract class Class2 implements Base { public boolean m1(){ return (7 > 4); }}5. abstract class Class2 implements Base { protected boolean m1(){ return (5 > 7) }}

A

1 and 2

B

2 and 3

C

3 and 4

D

1 and 3

E

4 and 5

The _____ table contains the base address of each page in physical memory.

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