NIELIT 2020 : Mini Mock -5 for GATE & PSU CS Exams

Question 1

Which of the following is correct with regard to insertion sort?

Question 2

Which of the following has best lower bound time complexity?

Question 3

What are the ACID properties of a transaction:

Question 4

Which of the following is the correct order of keywords for SQL SELECT statements?

Question 5

0.75 decimal system is equivalent to ____ in octal system

Question 6

Ring counter is analogous to

Question 7

Company X shipped 5 computer chips, 1 of which was defective and company Y shipped 4 computer chips, 2 of which were defective. One computer chip is to be chosen uniformly at a random from the 9 chips shipped by the companies. If the chosen chip is found to be defective, what is the probability that the chip came from the company Y?

Question 8

The maximum number of states that a modulus counter with a six flip-flop can count are

Question 9

Which one is correct with respective RDBMS ?

Question 10

Comparing the time T1 taken for a single instruction on a pipelined CPU, with time T2 taken on a non-pipelined but identical CPU, we can say that __________?

Question 11

Choose the False statement.

Question 12

The application layer of a network ________

Question 13

A six-face fair dice is rolled a large number of times. The mean value of the outcomes is ______.

Question 14

A Binary Counter is being Pulsed by a 256 kHz Clock Signal. The Output Frequency from the Last Flip-flop is 2 kHz. What is the MOD number?

Question 15

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

Question 16

The performance of a pipelined processor suffers if?

Question 17

Match the problem domains in GROUP I with the solution technologies in GROUP II
Group - I
(P) Service oriented computing
(Q) Heterogeneous communicating systems
(R) Information representation
(S) Process Description
Group - II
(1) Interoperability
(2) BPMN
(3) Publish-find-bind
(4) XML

Question 18

Consider the grammar defined by the following production

X → X # Y | Y

Y → Y $ Z | Z

Z → W & Z |W

W → id

Which of the following is true?

Question 19

Two trains A and B of 150 m and 300 m, run at speed of 54 km/hr and 108 km/hr respectively, in the direction opposite direction to each other. Find the time required to cross each other after the moment they met?

Question 20

A train moves with a speed of 108 kmph. Its speed in metres per second is :

Question 21

In a class of 100 students 70 are boys and rest are girls. mean of boy’s marks is 75 and that of complete class is 72, What is the average of girl’s marks?

Question 22

Alfred buys an old scooter for Rs. 4700 and spends Rs. 800 on its repairs. If he sells the scooter for Rs. 5800, his gain percent is:

Question 23

Choose the odd numeral pair/group in each of the following options:

Question 24

Direction: Have a word followed by four answer choices. You will choose the word that is a necessary part of the word.

oligopoly

Question 25

A vendor sells 50 percent of apples he had and throws away 20 percent of the remainder. Next day he sells 60 percent of the remainder and throws away the rest. What percent of his apples does the vendor throw?

Question 26

The sum of ages of 5 children born at the intervals of 3 years is 50 years. What is the age of the youngest child?

Question 27

Sonu saves 15% of her income. If her income increases by 20% and she still saves the same amount as before, then what is the percentage increase in her expenditure? (correct to one decimal place)

Question 28

A man crosses a 400 m long bridge in 8 minutes. What is his speed in km/h?

Question 29

If (21x – 25y) : (4x + 5y) = 5 : 4, then one of the value of

is.

Question 30

Anu fixes the selling price of an article at 25% above its cost of production. If the cost of production goes up by 20%, which raises the selling price by 10%, then her percentage profit is (correct to one decimal place):