UGC NET DECEMBER 2018 Computer Science Paper – II – Modal Exam

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Welcome to your UGC NET DECEMBER 2018 Computer Science Paper - II Modal Exam

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The number of bits required for an IPV 6 address is

128

The design issue of Datalink Layer in OSI Reference Model is

Synchronization of bits

Representation of bits

Framing

Connection control

A hash function f defined as f (key) = key mod 13, with linear probing is used to insert keys 55, 58, 68, 91, 27, 145. What will be the location of 79 ?

B + tree are preferred to binary tree in database because

Disk data transfer rates are much less than memory data transfer rate

Disk capacities are greater than memory capacities

Disk are more reliable than memory

Disk access much slower than memory access

A graph is non-planar if and only if it contains a subgraph homomorphic to

k2,3 or k6

k3,3 or k6

k3,3 or k5

K3,2 or K5

“Black” refers in the “Black-box” testing means

Design is hidden

Users are hidden

Functions are hidden

I – O is hidden

Component level design is concerned with

None of the above

Flow oriented analysis

Class based analysis

Both of the above

A station in a network forward incoming packets by placing them on its shortest output queue. What routing algorithm is being used ?

Flooding

Static routing

Delta routing

Hot potato routing

Data security threats include

hardware failure

fraudulent manipulation of data

encryption and decryption

privacy invasion

10.

The amount of uncertainty in a system of symbol is called

Entropy

Loss

Bandwidth

Quantum

11.

The relationship of data elements in a module is called

Granularity

Modularity

Cohesion

Coupling

12.

The ‘C’ language is

None of the above

Context sensitive language

Regular language

Context free language

13.

Match the following IC families with their basic circuits :
a.   TTL                   1. NAND
b.   ECL                  2. NOR
c.   CMOS              3. Inverter Code

a-2,b-3,c-1

a-1,b-2,c-3

a-3,b-2,c-1

a-1,b-3,c-2

14.

Encryption and Decryption is the responsibility of Layer.

Network

Datalink

Application

Physical

15.

All of the following are examples of real security and privacy risks except

Identify theft

Hackers

Spam

Viruses

16.

In UNIX, which of the following command is used to set the task priority ?

nice

kill

init

17.

The post order traversal of a binary tree is DEBFCA. Find out the preorder traversal.

ABFCDE

ABDECF

ABDCEF

ADBFEC

18.

Which of the following is a bad example of recursion ?

Tower of Hanoi

Tree traversal

Factorial

Fibonacci numbers

19.

The time complexity to build a heap of n elements is

O(nlgn)

O(1)

O(n)

O(lgn)

20.

The VLF and LF bauds use propagation for communication

Ground

Space

Line of sight

Sky

21.

How much space will be required to store the bit map of a 1.3 GB disk with 512 bytes block size ?

256.6 KB

266.2 KB

332.8 KB

83.6 KB

22.

The number of bit strings of length eight that will either start with a 1 bit or end with two bits 00 shall be

160

128

23.

What is the size of the Unicode character in Windows Operating System?

32-Bits

16-Bits

None of the above

8-Bits

24.

Which of the following can be the sequence of nodes examined in binary search tree while searching for key 88 ?

90, 40, 65, 50, 88

90, 110, 80, 85, 88

190, 60, 90, 85, 88

65, 140, 80, 70, 88

25.

The maturity levels used to measure a process are

Initial, Stating, Defined, Managed, Optimized

Primary, Secondary, Defined, Managed, Optimized

None of the above

Initial, Repeatable, Defined, Managed, Optimized

26.

Web Mining is not used in which of the following areas ?

Information filtering

Online transaction processing

Crime fighting on the internet

Click stream analysis

27.

Consider a logical address space of 8 pages of 1024 words mapped with memory of 32 frames. How many bits are there in the physical address ?

9 Bits

13 Bits

15 Bits

11 Bits

28.

Which API is used to draw a circle ?

Circle ()

Pie()

Round Rect ( )

Ellipse ( )

29.

Active X controls are Pentium binary programs that can be embedded in ____________

Web pages

Word pages

URL pages

Script pages

30.

In which tree, for every node the height of its left subtree and right subtree differ almost by one

Complète Binary Tree

Threaded Binary Tree

Binary search tree

AVL tree

31.

RAD stands for______.

Rapid Application Development

Rapid Aided Development

Rapid Application Design

Rapid and Design

32.

Optical storage is a

high-speed direct access storage device

medium-speed direct access storage device

high-speed sequential access storage device

low-speed direct access storage device

33.

Which of the following is true ?

A relation in BCNF is not in 3NF

BCNF and 3NF are same

A relation in BCNF is always in 3NF

A relation in 3NF is always in BCNF

34.

Dijkestra banking algorithm in an operating system, solves the problem of

deadlock recovery

context switching

deadlock avoidance

mutual exclusion

35.

How many edges are there in a forest of t-trees containing a total of n vertices ?

n-t

n*t

n+1

36.

Basis path testing falls under

unit testing

white box testing

system testing

black box testing

37.

The worst case time complexity of AVL tree is better in comparison to binary search tree for

Search and Insert Operations

Search, Insert and Delete Operations

Insert and Delete Operations

Search and Delete Operations

38.

Consider the tree given below :

Using the property of eccentricity of a vertex, find every vertex that is the centre of the given tree.

g, b, c, h, i, m

c & k

d & h

c & h

39.

Match the following with respect to C++ data types :
a.   User defined type      1. Qualifier
b.   Built in type              2. Union
c.   Derived type             3. Void
d.   Long double             4. Pointer

a-3,b-4,c-1,d-2

a-1,b-2,c-3,d-4

a-2,b-3,c-4,d-1

a-2,b-4,c-3,d-1

40.

Emergency fixes known as patches are result of

perfective maintenance

none of the above

corrective maintenance

adaptive maintenance

41.

The value of the following expression (13 / 4 * 3) % 5 + 1 is

2.95

1.4875

5.75

42.

The Mobile Application Protocol (MAP) typically runs on top of which protocol ?

SNMP (Simple Network Management Protocol)

SMTP (Simple Mail Transfer Protocol)

SS7 (Signalling System 7)

HTTP (Hyper Text Transfer Protocol)

43.

What is the result of the following expression ?
(l&2) + (3&4)

44.

Match the following :
List-I                                                        List – II
a. Wireless Application Environment i. HTTP
b. Wireless Transaction Protocol                       ii. IP
c. Wireless Datagram Protocol    iii. Scripts
d. Wireless                                                            iv. UDP

a-iii,b-i,c-iv,d-ii

a-iii,b-ii,c-iv,d-i

a-ii,b-iii,c-i,d-iv

a-i,b-ii,c-iii,d-iv

45.

In how many ways can 15 indistinguishable fish be placed into 5 different ponds, so that each pond contains atleast one fish ?

775

3876

1001

200

46.

The problem of indefinite blockage of low-priority jobs in general priority scheduling algorithm can be solved using :

Aging

Compaction

Timer

Parity bit

47.

Linux operating system uses

Hand Shaking

Highest Penalty Ratio Next

Fair Preemptive Scheduling

Affinity Scheduling

48.

Encoding of data bits 0011 into 7-bit even Parity Hamming Code is

0010110

0011110

0101110

0011100

49.

A chip having 150 gates will be classified as

VLSI

MSI

LSI

SSI

50.

Testing of software with actual data and in actual environment is called

Regression testing

Beta testing

Alpha testing

None of the above

51.

If a packet arrive with an M-bit value is ‘1’ and a fragmentation offset value ‘0’, then it is______ fragment

First

Last

All the above

Middle

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UGC NET DECEMBER 2018 Computer Science Paper – II – Modal Exam