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Computer Science Question Answers Competitive Exams Online MCQ

Computer Science MCQ Questions Answers for competitive exams: This mock test having 15 question each, with four choices. On each click on answers system will tell you where the answers is correct or incorrect. You can view this Computer Science test question details at the end of the quiz.

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This Computer Science questions answers are applicable for any kind of entrance exam or job related exam especially for P.O. GATE, IIT JAM and other placement examination. You practice as much as you can so gather knowledge of how to answers Computer Science critical type papers in short time and this can be a big factor for cracking any exam.



Computer Science and Information Technology (CS)

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Question 1
The minimum number of D flip-flops needed to design a mod-258 counter is
A
9
B
8
C
512
D
258
Question 2
The lexical analysis for a modern computer language such as Java needs the power of which one of the following machine models in a necessary and sufficient sense?
A
Finite state automate
B
Deterministic pushdown automata
C
Non-Deterministic pushdown automata
D
Tuning machine
Question 3
In a compiler, keywords of a language are recognized during
A
parsing of the program
B
the code generation
C
the lexical analysis of the program
D
dataflow analysis
Question 4
Any identifier is also a token so it is recognized in lexical Analysis 15. A layer-4 firewall (a device that can look at all protocol headers up to the transport layer) CANNOT
A
block entire HTTP traffic during 9:00PM and 5:00AM
B
block all ICMP traffic
C
stop incoming traffic from a specific IP address hut allow outgoing traffic to the same IP address
D
block TCP traffic from a specific user on a multi-user system during 9:00PM and 5:00AM
Question 5
If two fair coins are flipped and at least one of the outcomes is known to be a head, what is the probability that both outcomes are heads?
A
1/3
B
1/4
C
1/2
D
2/3
Question 6
A company needs to develop digital signal processing software for one of its newest inventions. The software is expected to have 40000 lines of code. The company needs to determine the effort in person-months needed to develop this software using the basic COCOMO model. The multiplicative factor for this model is given as 2.8 for the software development on embedded systems, while the exponentiation factor is given as 1.20. What Is the estimated effort In person months?
A
234.25
B
932.50
C
287.80
D
122.40
Question 7
Which of the following pairs have DIFFERENT expressive power?
A
Deterministic finite automata (DFA) and Non-deterministic finite automata (NFA)
B
Deterministic push down automata (DPDA) and Non-deterministic push down automata (NPDA)
C
Deterministic single-tape Turing machine and Non-deterministic single tape Turing machine
D
Single-tape Turing machine and multi-tape Turing machine
Question 8
HTFIL (Hyper Text Markup Language) has language elements which permit certain actions other than describing the structure of the web document. Which one of the following actions is NOT supported by pure HTML (without any server or client side scripting) pages?
A
Embed web objects from different sites into the same page
B
Refresh the page automatically after a specified interval
C
Automatically redirect to another page upon download
D
Display the client time as part of the page
Question 9
Which of the following is NOT desired in a good Software Requirement Specifications (SRS) doc Lament?
A
Functional Requirements
B
Non Functional Requirements
C
Goals of Implementation
D
Algorithms for Software Implementation
Question 10
An application loads 100 libraries at startup. Loading each library requires exactly one disk access. The seek time of the disk to a random location is given as 10ms. Rotational speed of disk is 6000rpm. If all 100 libraries are loaded from random locations on the disk, how long does it take to load all libraries? (The time to transfer data from the disk block once the head has been positioned at the start of the block may he neglected)
A
0.50s
B
1.50s
C
1.25s
D
1.00s
Question 11
If at some instance prior to the occurrence of the clock edge, P. Q and R have a value 0, 1 and 0 respectively, what shall be the value of PQR after the clock edge?
A
000
B
001
C
010
D
011
Question 12
A deck of 5 cards (each carrying a distinct number from 1 to 5) is shuffled thoroughly. Two cards are then removed one at a time from the deck. What is the probability that the two cards are selected with the number on the first card being one higher than the number on the second card?
A
1/5
B
4/25
C
1/4
D
2/5
Question 13
The cost of link N2-N3 reduces to 2 in (both directions). After the next round of updates, what will be the new distance vector at node, N3?
A
(3. 2, 0, 2, 5)
B
(3, 2, 0, 2, 6)
C
(7, 2, 0, 2, 5)
D
(7, 2, 0, 2, 6)
Question 14
Choose the most appropriate word(s) from the options given below to complete the following sentence. I_______ contemplated Singapore for my vacation but decided against it.
A
To visit
B
having to visit
C
visiting
D
for a visit
Question 15
Choose the most appropriate word from the options given below to complete the following sentence. If you are trying to iliac a strong impression on your audience, you cannot do so by being understated, tentative or______________
A
Hyperbolic
B
Restrained
C
Argumentative
D
Indifferent
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