D12CSPII-41-50

UGC NET Dec-2012 

Computer Science (Paper II)

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41.Enumeration is a process of

Declaring a set of numbers
Sorting a list of strings
Assigning a legal values possible for a variable
Sequencing a list of operators

42.Which of the following mode declaration is used in C++ to open a file for input ?
ios : : app
in : : ios
ios : : file
ios : : in

43.Data Encryption Techniques are particularly used for ______.
protecting data in Data Communication System.
reduce Storage Space Requirement.
enhances Data Integrity.
decreases Data Integrity.

44.Let L be a set accepted by a nondeterministic finite automaton. The number of states in non-deterministic finite automaton is |Q|. The maximum number of states in equivalent finite automaton that accepts L is
|Q|
2|Q|
2^|Q| – 1
2^|Q|

45.What is the result of the following expression ?
(1 & 2) + (3 & 4)
1
3
2
0

46.Back propagation is a learning technique that adjusts weights in the neural network by propagating weight changes.
Forward from source to sink
Backward from sink to source
Forward from source to hidden nodes
Backward from since to hidden nodes

47.Match the following :
a. TTL                      1. High fan out
b. ECL                      2. Low propagation delay
c. CMOS                   3. High power dissipation
Code : 
     a b c
3 2 1
1 2 3
1 3 2
3 1 2

48.______ is an “umbrella” activity that is applied throughout the software engineering process.

Debugging
Testing
Designing
Software quality assurance

49.Identify the operation which is commutative but not associative ?
OR
NOR
EX-OR
NAND

50.Given a Relation POSITION (Posting- No, Skill), then query to retrieve all distinct pairs of posting-nos. requiring skill is
Select p.posting-No, p.posting-No from position p where p.skill = p.skill and p.posting-No < p.posting-No
Select p₁.posting-No, p₂.posting-No from position p₁,position p₂where p₁.skill = p₂.skill
Select p₁.posting-No, p₂.posting-No from position p₁,position p₂where p₁.skill = p₂.skill and p₁.posting-No < p₂.posting-No
Select p₁.posting-No, p₂.posting-Nofrom position p₁, position p₂ where p₁.skill = p₂.skill and p₁.posting-No = p₂.posting-No

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Mr.Neelamadhaba Panigrahi,I & CT,FMU

This page is developed by our student Mr. Neelamadhaba Panigrahi, 2nd semester ICT and Ex-student, Miss Priyadarsini Mishra Thank u Neelamadhaba & Priyadarsini!!