UGC NET CSA JUNE 2015 Paper-3

Q1➡ |
For the 8 – bit word 00111001, the check bits stored with it would be 0111. Suppose when the word is read from memory, the check bits are calculated to be 1101. What is the data word that was read from memory?

i ➥ 10011001

ii ➥ 00011001

iii ➥ 00111000

iv ➥ 11000110

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Answer: II
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Number systems

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Q2➡ |
Consider a 32 – bit microprocessor, with a 16 – bit external data bus, driven by an 8 MHz input clock. Assume that this microprocessor has a bus cycle whose minimum duration equals four input clock cycles. What is the maximum data transfer rate for this microprocessor?

i ➥ 8 × 10 ⁶ bytes/sec

ii ➥ 4 × 10 ⁶ bytes/sec

iii ➥ 16 × 10 ⁶ bytes/sec

iv ➥ 4 × 10 ⁶ bytes/sec

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Answer: II
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Microprocessor

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Q3➡ |
The RST 7 instruction in 8085 microprocessor is equivalent to:

i ➥ CALL 0010 H

ii ➥ CALL 0034 H

iii ➥ CALL 0038 H

iv ➥ CALL 003C H

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Answer: III
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Microprocessor

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Q4➡ |
The equivalent hexadecimal notation for octal number 2550276 is:

i ➥ FADED

ii ➥ AEOBE

iii ➥ ADOBE

iv ➥ ACABE

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Answer: III
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Number systems

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Q5➡ |
The CPU of a system having 1 MIPS execution rate needs 4 machine cycles on an average for executing an instruction. The fifty percent of the cycles use memory bus. A memory read/ write employs one machine cycle. For execution of the programs, the system utilizes 90 percent of the CPU time. For block data transfer, an IO device is attached to the system while CPU executes the background programs continuously. What is the maximum IO data transfer rate if programmed IO data transfer technique is used?

i ➥ 500 Kbytes/sec

ii ➥ 2.2 Mbytes/sec

iii ➥ 125 Kbytes/sec

iv ➥ 250 Kbytes/sec

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Answer: IV
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Microprogrammed control unit

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Q6➡ |
The number of flip-flops required to design a modulo – 272 counter is:

i ➥ 8

ii ➥ 9

iii ➥ 27

iv ➥ 11

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Answer: II
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Sequential circuits

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Q7➡ |
Let E 1 and E 2 be two entities in E-R diagram with simple single valued attributes. R₁ and R ₂ are two relationships between E ₁ and E ₂ where R ₁ is one – many and R ₂ is many – many. R ₁ and R ₂ do not have any attributes of their own. How many minimum number of tables are required to represent this situation in the Relational Model?

i ➥ 4

ii ➥ 3

iii ➥ 2

iv ➥ 1

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Answer: II
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ER-Model

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Q8➡ |
The STUDENT information in a university stored in the relation STUDENT (Name, SEX, Marks, DEPT_Name) Consider the following SQL Query SELECT DEPT_Name from STUDENT where SEX = ‘M’ group by DEPT_Name having avg (Marks)>SELECT avg (Marks) from STUDENT. It Returns the Name of the Department for which:

i ➥ The Average marks of Male students is more than the average marks of students in the same Department

ii ➥ The average marks of male students is more than the average marks of students in the University

iii ➥ The average marks of male students is more than the average marks of male students in the University

iv ➥ The average marks of students is more than the average marks of male students in the University

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Answer: II
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Learn Topic Wise

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Q9➡ |
Select the ‘False’ statement from the following statements about Normal Forms:

i ➥ Lossless preserving decomposition into 3NF is always possible

ii ➥ Lossless preserving decomposition into BCNF is always possible

iii ➥ Any Relation with two attributes is in BCNF

iv ➥ BCNF is stronger than 3NF

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Answer: II
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Normalization

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Q10➡ |
The Relation Vendor Order (V_no, V_ord_no, V_name, Qty_sup, unit_price) is in 2NF because:

i ➥ Non_key attribute V_name is dependent on V_no which is part of composite key

ii ➥ Non_key attribute V_name is dependent on Qty_sup

iii ➥ Key attribute Qty_sup is dependent on primary_key unit price

iv ➥ None of the above

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Answer: IV
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Normalization

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Q11➡ |
The relation schemas R ₁ and R ₂ form a Lossless join decomposition of R if and only if:
R ₁ ∩ R ₂ ↠ (R ₁ – R ₂ )
R ₁ → R ₂
R ₁ ∩ R ₂ ↠ (R ₂ – R ₁ )
(R ₂ → R ₁ ) ∩ R ₂

i ➥ (a) and (b) happens

ii ➥ (a) and (d) happens

iii ➥ (a) and (c) happens

iv ➥ (b) and (c) happens

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Answer: III
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Functional dependency

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Q12➡ |
In the indexed scheme of blocks to a file, the maximum possible size of the file depends on:

i ➥ The number of blocks used for index and the size of index

ii ➥ Size of Blocks and size of Address

iii ➥ Size of index

iv ➥ Size of Block

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Answer: II
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File system

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Q13➡ |
Give the number of principal vanishing point(s) along with their direction for the standard perspective transformation:

i ➥ Only one in the direction K

ii ➥ Two in the directions I and J

iii ➥ Three in the directions I, J and K

iv ➥ Only two in the directions J and K

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Answer: I
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Transformations

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Q14➡ |
Consider a triangle A(0,0), B(1,1) and C(5,2). The triangle has to be rotated by an angle of 45 about the point P(-1, -1). What shall be the coordinates of the new triangle?

i ➥

ii ➥

iii ➥

iv ➥

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Answer: III
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Co-ordinate geometry

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Q15➡ |
The process of dividing an analog signal into a string of discrete outputs, each of constant amplitudes, is called:

i ➥ Strobing

ii ➥ Amplification

iii ➥ Conditioning

iv ➥ Quantization

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Answer: IV
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Signals

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Q16➡ |
Which of the following is not a basic primitive of the Graphics Kernel System (GKS)?

i ➥ POLYLINE

ii ➥ POLYDRAW

iii ➥ FILL AREA

iv ➥ POLYMARKER

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Answer: II
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Graphics

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Q17➡ |
Which of the following statement(s) is/are incorrect ?

i ➥ Mapping the coordinates of the points and lines that form the picture into the appropriate coordinates on the device or workstation is known as viewing transformation.

ii ➥ The coordinate system that corresponds to the device or workstation where the image is to be displayed is known as physical device coordinate system

iii ➥ The right-handed cartesian coordinates system in whose coordinates we describe the picture is known as world coordinate system.

iv ➥ Left – handed coordinate system in which the display area of the virtual display device corresponds to the unit (|x|) square whose lower left-hand corner is at the origin of the coordinate system, is known as normalized device coordinate system.

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Answer: IV
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Co-ordinate geometry

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i ➥ (i), (b)-(ii), (c)-(iii), (d)-(iv), (e)-(v)

ii ➥ (ii), (b)-(iii), (c)-(i), (d)-(iv), (e)-(v)

iii ➥ (iii), (b)-(i), (c)-(ii), (d)-(v), (e)-(iv)

iv ➥ (iv), (b)-(v), (c)-(i), (d)-(ii), (e)-(iii)

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Answer: I
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Display system

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Q19➡ |
Minimal deterministic finite automaton for the language L = {0 n | n ≥ 0, n ≠ 4} will have:

i ➥ 1 final state among 5 states

ii ➥ 4 final states among 5 states

iii ➥ 1 final state among 6 states

iv ➥ 5 final states among 6 states

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Answer: IV
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Finite automata

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Q20➡ |
The regular expression corresponding to the language L where L = { x ε {0, 1}*|x ends with 1 and does not contain substring 00 } is:

i ➥ (1 + 01) * (10 + 01)

ii ➥ (1 + 01) * 01

iii ➥ (1 + 01) * (1 + 01)

iv ➥ (10 + 01) * 01

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Answer: III
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Regular expression

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Q21➡ |

i ➥ q ₀ and q ₀ respectively

ii ➥ q ₀ and q ₁ respectively

iii ➥ q ₀ and q ₂ respectively

iv ➥ q ₀ and q ₃ respectively

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Answer: IV
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Finite automata

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Q22➡ |
The clausal form of the disjunctive normal form ¬A ∨ ¬B ∨ ¬C ∨ D is:

i ➥ A ∧ B ∧ C ⇒ D

ii ➥ A ∨ B ∨ C ∨ D ⇒ true

iii ➥ A ∧ B ∧ C ∧ D ⇒ true

iv ➥ A ∧ B ∧ C ∧ D ⇒ false

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Answer: I
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Propositional logic

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Q23➡ |
Which of the following is false for the programming language PROLOG?

i ➥ A PROLOG variable can only be assigned to a value once

ii ➥ PROLOG is a strongly typed language

iii ➥ The scope of a variable in PROLOG is a single clause or rule

iv ➥ The scope of a variable in PROLOG is a single query

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Answer: II
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PROLOG

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Q24➡ |
Which one of the following is true?

i ➥ The resolvent of two Horn clauses is not a Horn clause

ii ➥ The resolvent of two Horn clauses is a Horn clause

iii ➥ If we resolve a negated goal G against a fact or rule A to get clause C then C has positive literal or non-null goal

iv ➥ If we resolve a negated goal G against a fact or rule A to get clause C then C has positive literal or null goal

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Answer: II
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Horn clause

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Q25➡ |
Which transmission technique guarantees that data packets will be received by the receiver in the same order in which they were sent by the sender?

i ➥ Broadcasting

ii ➥ Unicasting

iii ➥ Packet switching

iv ➥ Circuit switching

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Answer: IV
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Transmission techniques

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Q26➡ |
Which of the following control fields in the TCP header is used to specify whether the sender has no more data to transmit?

i ➥ FIN

ii ➥ RST

iii ➥ SYN

iv ➥ PSH

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Answer: I
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TCP/IP

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Q27➡ |
Which are the two modes of IP security?

i ➥ Transport and certificate

ii ➥ Transport and tunnel

iii ➥ Certificate and tunnel

iv ➥ Pre Shared and transport

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Answer: II
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IP header

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Q28➡ |
A message “COMPUTERNETWORK” encrypted (ignore quotes) using columnar transposition cipher with a key “LAYER”. The encrypted message is :

i ➥ CTTOEWMROPNRUEK

ii ➥ MROUEKCTTPNROEW

iii ➥ OEWPNRCTTUEKMRO

iv ➥ UEKPNRMROOEWCTT

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Answer: III
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Network security

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Q29➡ |
Suppose a digitized voice channel is made by digitizing 8 kHz bandwidth analog voice signal. It is required to sample the signal at twice the highest frequency (two samples per hertz). What is the bit rate required, if it is assumed that each sample requires 8 bits?

i ➥ 32 kbps

ii ➥ 64 kbps

iii ➥ 128 kbps

iv ➥ 256 kbps

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Answer: III
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Signals

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Q30➡ |
The maximum payload of a TCP segment is:

i ➥ 65,535

ii ➥ 65,515

iii ➥ 65,495

iv ➥ 65,475

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Answer: III
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TCP/IP

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Q31➡ |
An all-pairs shortest-paths problem is efficiently solved using:

i ➥ Dijkstra’ algorithm

ii ➥ Bellman-Ford algorithm

iii ➥ Kruskal algorithm

iv ➥ Floyd-Warshall algorithm

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Answer: IV
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Dynamic programming

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Q32➡ |
The travelling salesman problem can be solved in:

i ➥ Polynomial time using dynamic programming algorithm

ii ➥ Polynomial time using branch-and-bound algorithm

iii ➥ Exponential time using dynamic programming algorithm or branch-and-bound algorithm

iv ➥ Polynomial time using backtracking algorithm

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Answer: III
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Dynamic programming

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Q33➡ |
Which of the following is asymptotically smaller?

i ➥ lg(lg*n)

ii ➥ lg*(lgn)

iii ➥ lg(n!)

iv ➥ lg*(n!)

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Answer: I
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Asymptotic complexity

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Q34➡ |
Consider a hash table of size m = 100 and the hash function h(k) = floor(m(kA mod 1)) for A = frac{(sqrt5 – 1) 2 = 0.618033 Compute the location to which the key k = 123456 is placed in hash table.

i ➥ 77

ii ➥ 82

iii ➥ 88

iv ➥ 89

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Answer: III
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Hashing

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Q35➡ |
Let f(n) and g(n) be asymptotically nonnegative functions. Which of the following is correct?

i ➥ θ(f(n)*g(n)) = min(f(n), g(n))

ii ➥ θ(f(n)*g(n)) = max(f(n), g(n))

iii ➥ θ(f(n)+g(n)) = min(f(n), g(n))

iv ➥ θ(f(n)+g(n)) = max(f(n), g(n))

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Answer: IV
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Asymptotic complexity

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Q36➡ |
The number of nodes of height ‘h’ in any n-element heap is ______.

i ➥ h

ii ➥ z^h

iii ➥ ⌈n/(z ^h )⌉

iv ➥ ⌈n/z ^h+1 )

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Answer: None of the above
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Heap tree

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Q37➡ |
In Java, when we implement an interface method, it must be declared as:

i ➥ Private

ii ➥ Protected

iii ➥ Public

iv ➥ Friend

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Answer: III
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Java

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Q38➡ |
The Servlet Response interface enables a servlet to formulate a response for a client using the method _______.

i ➥ void log(Exception e, String s)

ii ➥ void destroy( )

iii ➥ int get ServerPort( )

iv ➥ void set ContextType(String type)

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Answer: IV
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Client server application

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Q39➡ |
Which one of the following is correct?

i ➥ Java applets can not be written in any programming language

ii ➥ An applet is not a small program

iii ➥ An applet can be run on its own

iv ➥ Applets are embedded in another applications

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Answer: IV
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Java

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Q40➡ |
I n XML we can specify the frequency of an element by using the symbols:

i ➥ +* !

ii ➥ #*!

iii ➥ +*?

iv ➥ -*?

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Answer: III
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XML

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Q41➡ |
In XML, DOCTYPE declaration specifies to include a reference to _______ file.

i ➥ Document type Definition

ii ➥ Document type declaration

iii ➥ Document transfer definition

iv ➥ Document type language

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Answer: I
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XML

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Q42➡ |
Module design is used to maximize cohesion and minimize coupling. Which of the following is the key to implement this rule?

i ➥ Inheritance

ii ➥ Polymorphism

iii ➥ Encapsulation

iv ➥ Abstraction

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Answer: III
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Coupling and cohesion

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Q43➡ |
Verification:

i ➥ refers to the set of activities that ensure that software correctly implements a specific function

ii ➥ gives answer to the question – Are we building the product right ?

iii ➥ requires execution of software

iv ➥ both (A) and (B)

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Answer: IV
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Software configuration management

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Q44➡ |
Which design metric is used to measure the compactness of the program in terms of lines of code?

i ➥ Consistency

ii ➥ Conciseness

iii ➥ Efficiency

iv ➥ Accuracy

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Answer: II
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Software design

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Q45➡ |
Requirements prioritisation and negotiation belongs to:

i ➥ Requirements validation

ii ➥ Requirements elicitation

iii ➥ Feasibility study

iv ➥ Requirements reviews

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Answer: II
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Software requirements

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Q46➡ |
Adaptive maintenance is a maintenance which _______.

i ➥ correct errors that were not discovered till testing phase

ii ➥ is carried out to port the existing software to a new environment.

iii ➥ improves the system performance

iv ➥ both (2) and (3)

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Answer: II
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Software configuration management

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Q47➡ |
A Design concept Refinement is a

i ➥ Top-down approach

ii ➥ Complementary of Abstraction concept

iii ➥ Process of elaboration

iv ➥ All of the above

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Answer: IV
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Software reliability

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Q48➡ |
A software design is highly modular if:

i ➥ cohesion is functional and coupling is data type.

ii ➥ cohesion is coincidental and coupling is data type.

iii ➥ cohesion is sequential and coupling is content type.

iv ➥ cohesion is functional and coupling is stamp type.

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Answer: I
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Software design

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i ➥ (a)-(iii), (b)-(i), (c)-(ii), (d)-(iv)

ii ➥ (a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)

iii ➥ (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)

iv ➥ (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)

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Answer: II
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Match the following

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Q50➡ |
Which of the following statements is not true for Multi Level Feedback Queue processor scheduling algorithm?

i ➥ Queues have different priorities

ii ➥ Each queue may have different scheduling algorithm

iii ➥ Processes are permanently assigned to a queue

iv ➥ This algorithm can be configured to match a specific system under design

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Answer: III
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Process scheduling

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Q51➡ |
What is the most appropriate function of Memory Management Unit (MMU)?

i ➥ It is an associative memory to store TLB

ii ➥ It is a technique of supporting multiprogramming by creating dynamic partitions

iii ➥ It is a chip to map virtual address to physical address

iv ➥ It is an algorithm to allocate and deallocate main memory to a process

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Answer: III
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Memory management

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Q52➡ |
Dining Philosophers problem is a:

i ➥ Producer – consumer problem

ii ➥ Classical IPC problem

iii ➥ Starvation problem

iv ➥ Synchronization primitive

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Answer: II
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Process synchronization

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Q53➡ |
In _____ allocation method for disk block allocation in a file system, insertion and deletion of blocks in a file is easy.

i ➥ Index

ii ➥ Linked

iii ➥ Contiguous

iv ➥ Bitmap

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Answer: III
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File system

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Q54➡ |
A unix file may be of the type:

i ➥ Regular file

ii ➥ Directory file

iii ➥ Device file

iv ➥ Any one of the above

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Answer: IV
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Unix operating system

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i ➥ (a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)

ii ➥ (a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)

iii ➥ (a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)

iv ➥ (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)

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Answer: II
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Knowledge representation

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i ➥ (a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)

ii ➥ (a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)

iii ➥ (a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)

iv ➥ (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)

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Answer: I
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Computer science basics

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Q57➡ |
In propositional logic P ↔ Q is equivalent to (Where ~ denotes NOT):

i ➥ ~( P ∨ Q ) ∧ ~ ( Q ∨ P )

ii ➥ ( ~P ∨ Q ) ∧ (~ Q ∨ P )

iii ➥ ( P ∨ Q ) ∧ ( Q ∨ P )

iv ➥ ~( P ∨ Q ) → ~ ( Q ∨ P )

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Answer: II
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Propositional logic

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Q58➡ |
Which of the following statements is true for Branch – and – Bound search?

i ➥ Underestimates of remaining distance may cause deviation from optimal path.

ii ➥ Overestimates can’t cause right path to be overlooked.

iii ➥ Dynamic programming principle can be used to discard redundant partial paths.

iv ➥ All of the above

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Answer: None of the above
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Branch and bound

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i ➥ (a)-(i), (b)-(iv), (c)-(iii), (d)-(ii)

ii ➥ (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)

iii ➥ (a)-(i), (b)-(iv), (c)-(ii), (d)-(iii)

iv ➥ (a)-(iv), (b)-(ii), (c)-(i), (d)-(iii)

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Answer: II
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Hill climbing algorithm

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i ➥ (a)-(i), (b)-(iii), (c)-(ii), (d)-(iv)

ii ➥ (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)

iii ➥ (a)-(i), (b)-(v), (c)-(ii), (d)-(iii)

iv ➥ (a)-(iv), (b)-(ii), (c)-(i), (d)-(iii)

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Answer: II
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Software design

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Q61➡ |
A context free grammar for L = { w | n₀ (w) > n₁(w) } is given by:

i ➥ S → 0 | 0 S | 1 S S

ii ➥ S → 0 S | 1 S | 0 S S | 1 S S | 0 | 1

iii ➥ S → 0 | 0 S | 1 S S | S 1 S | S S 1

iv ➥ S → 0 S |1 S | 0 | 1

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Answer: III
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Context free grammar

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Q62➡ |
Given the following two statements:
S 1 :If L 1 and L 2 are recursively enumerable languages over ∑, then L 1 ∪ L 2 and L 2 ∩ L 2 are also recursively enumerable.
S 2 : The set of recursively enumerable languages is countable. Which of the following is correct ?

i ➥ S 1 is correct and S 2 is not correct

ii ➥ S 1 is not correct and S 2 is correct

iii ➥ Both S 1 and S 2 are not correct.

iv ➥ Both S 1 and S 2 are not correct.

Answer: I
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Assignment problem

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i ➥ is degenerate solution

ii ➥ is optimum solution

iii ➥ needs to improve

iv ➥ is infeasible solution

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Answer: II
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Transportation problem

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Q69➡ |
Given the following statements with respect to linear programming problem:
S 1 : The dual of the dual linear programming problem is again the primal problem
S 2 : If either the primal or the dual problem has an unbounded objective function value, the other problem has no feasible solution.
S 3 : If either the primal or dual problem has a finite optimal solution, the other one also possesses the same, and the optimal value of the objective functions of the two problems are equal.
Which of the following is true?

i ➥ S 1 and S 2

ii ➥ S 1 and S 3

iii ➥ S 2 and S 3

iv ➥ S 1 , S 2 and S 3

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Answer: IV
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Duality

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Q70➡ |
Let A and B be two fuzzy integers defined as :
A = {(1, 0.3), (2, 0.6), (3, 1), (4, 0.7), (5, 0.2)}
B = {(10, 0.5), (11, 1), (12, 0.5)}
Using fuzzy arithmetic operation given by

i ➥ {(11, 0.8), ,(13, 1), (15, 1)}

ii ➥ {(11, 0.3), ,(12, 0.5), (13, 1), (14, 1), (15, 1), (16, 0.5), (17, 0.2)}

iii ➥ {(11, 0.3), ,(12, 0.5), (13, 0.6), (14, 1), (15, 1), (16, 0.5), (17, 0.2)}

iv ➥ {(11, 0.3), ,(12, 0.5), (13, 0.6), (14, 1), (15, 0.7), (16, 0.5), (17, 0.2)}

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Answer: IV
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Fuzzy logic

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Q71➡ |
Suppose the function y and a fuzzy integer number around – 4 for x are given as y = (x – 3) ² + 2.
Around – 4 = {(2, 0.3), (3, 0.6), (4, 1), (5, 0.6), (6, 0.3)} respectively. Then f (Around – 4) is given by:

i ➥ {(2, 0.6), (3, 0.3), (6, 1), (11, 0.3)}

ii ➥ {(2, 0.6), (3, 1), (6, 1), (11, 0.3)}

iii ➥ {(2, 0.6), (3, 1), (6, 0.6), (11, 0.3)}

iv ➥ {(2, 0.6), (3, 0.3), (6, 0.6), (11, 0.3)}

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Answer: III
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Fuzzy logic

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i ➥ (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)

ii ➥ (a)-(iii), (b)-(ii),(c)-(iv), (d)-(i)

iii ➥ (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)

iv ➥ (a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)

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Answer: I
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Learn Topic Wise

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Q73➡ |
WOW32 is a:

i ➥ Win 32 API library for creating processes and threads.

ii ➥ Special kind of file system to the NT namespace.

iii ➥ Kernel – mode objects accessible through Win 32 API

iv ➥ Special execution environment used to run 16 bit Windows applications on 32 – bit machines.

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Answer: IV
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Win32

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Q74➡ |
The unix command: $vi file1 file2

i ➥ Edits file1 and stores the contents of file1 in file2

ii ➥ Both files i.e. file1 and file2 can be edited using ‘ex’ command to travel between the files

iii ➥ Both files can be edited using ‘mv’ command to move between the files

iv ➥ Edits file1 first, saves it and then edits file2

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Answer: II
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Unix operating system

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