1. Eco system is
a Frame work for

(A) Building a Computer System

(B) Building Internet Market

(C) Building Offline Market

(D) Building Market

Answer: B

2. The efficiency
(E) and speed up (sp) for Multiprocessor with p processors satisfies :

(A) E≤p and s

_{p}≤p
(B) E≤1 and s

_{p}≤p
(C) E≤p and s

_{p}≤1
(D) E≤1 and s

_{p}≤1
Answer: B

3. Match the
following :

**List – I**

a. Critical region

b. Wait/signal

c. Working set

d. Dead lock

**List – II**

1. Hoares Monitor

2. Mutual exclusion

3. Principal of locality

4. Circular wait

**Codes :**

a b c d

(A) 2 1 3 4

(B) 1 2 4 3

(C) 2 3 1 4

(D) 1 3 2 4

Answer: A

4. The technique
of temporarily delaying outgoing acknowledgements so that they can be hooked
onto the next outgoing data frame is known as

(A) Bit stuffing

(B) Piggy backing

(C) Pipelining

(D) Broadcasting

Answer: B

5. …………… is
process of extracting previously non known valid and actionable information
from large data to make crucial business and strategic decisions.

(A) Data Management

(B) Data base

(C) Data Mining

(D) Meta Data

Answer: C

6. The aspect
ratio of an image is defined as

(A) The ratio of width to its height measured in unit
length.

(B) The ratio of height to width measured in number of
pixels.

(C) The ratio of depth to width measured in unit
length.

(D) The ratio of width to depth measured in number of
pixels.

Answer: A

7. Which of the
following features will characterize an OS as multiprogrammed OS?

(a) More than one program may be loaded into main
memory at the same time.

(b) If a program waits for certain event another
program is immediately scheduled.

(c) If the execution of a program terminates, another
program is immediately scheduled.

(A) (a) only

(B) (a) and (b) only

(C) (a) and (c) only

(D) (a), (b) and (c) only

Answer: D

8. Using RSA
algorithm, what is the value of cipher text C, if the plain text M=5 and p=3,
q=11 & d=7?

(A) 33

(B) 5

(C) 25

(D) 26

Answer: D

__Explanation:__
RSA (Rivest, Shamir, & Adleman) is an algorithm
used by modern computers to encrypt and decrypt messages. It is an asymmetric
cryptographic algorithm. Asymmetric means that there are two different keys. The
keys for the RSA algorithm are generated the following way:

Choose two different large random prime numbers p and
q.

Calculate n = pq = 3 x11=33

Calculate the totient: É¸(n) = (p-1)(q-1)=2 x 10=20

(In number theory, the totient É¸(n) of a positive
integer is the number of integers less than the number which are coprime to n
(they share no factors).)

(In mathematics, two integers (a and b) are coprime
(or relatively prime) if they share no common factors. In other words, there is
no number, other than 1, that divides both a and b.)

Choose an integer e, such that 1 < e < É¸(n), and
e is coprime to É¸(n), ie: e and É¸(n) share no factors other than 1.

de ≡ 1 (mod É¸(n)) => 7e≡1mod20,
then 7e must be 21, 41, 61, etc. Dividing each of these in turn by 7 to see
which is divisible by 7, we find that 21/7 = 3, hence e = 3.

c=m

^{e}mod n = 5^{3}mod 33 = 125 mod 33 = 26
9. You are given
an OR problem and a XOR problem to solve. Then, which one of the following statements
is true?

(A) Both OR and XOR problems can be solved using
single layer perception.

(B) OR problem can be solved using single layer
perception and XOR problem can be solved using self organizing maps.

(C) OR problem can be solved using radial basis
function and XOR problem can be solved using single layer perception.

(D) OR problem can be solved using single layer
perception and XOR problem can be solved using radial basis function.

Answer: D

10. Match the
following :

**List – I List – II**

a. Application layer 1.
TCP

b. Transport layer 2.
HDLC

c. Network layer 3.
HTTP

d. Data link layer 4.
BGP

**Codes :**

a b c d

(A) 2 1 4 3

(B) 3 4 1 2

(C) 3 1 4 2

(D) 2 4 1 3

Answer: C

## 1 Comments

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