NTA UGC NET 2019 June - II

Question 41

In the context of software testing, which of the following statements is/are NOT correct?

P : A minimal test set that achieves 100% path coverage will also achieve 100% statement coverage.

Q : A minimal test set that achieves 100% path coverage will generally detect more faults than one that achieves 100% statement coverage

R : A minimal test set that achieves 100% statement coverage will generally detect more faults than one that achieves 100% branch coverage.

• R only

• Q only

• P and Q only

• Q and R only

Question 42

Consider the following:

(a) Evolution

(b) Selection

(c) reproduction

(d) Mutation

Which of the following are found in genetic algorithms?

• b, c and d only

•  b and d only

• a, b, c and d

• a, b and d only

Question 43

The value of the derivative of the sigmoid function given by

f(x)= 1 /  (1+e(-2x)) at x=0 is

• 0

•  12

•  14

•  ∞

Question 44

Consider the poset ({3,5,9,15,24,45},|)

Which of the following is correct for the given poset?

• There exist a greatest element and a least element

• There exist a greatest element but not a least element

•  There exist a least element but not a greatest element

• There does not exist a greatest element and a least element

Question 45

Hadoop(a big data tool) works with number of related tools. Choose from the following, the common tools included into Hadoop:

• MySQL, Google API and Map reduce

• Map reduce, Scala and Hummer

• Map reduce, H Base and Hive

• Map reduce, Hummer and Heron

Question 46

Let A_α0 denotes the α-cut of a fuzzy set A at α0. If α1 < α2 , then

•  A_α1⊇A_α2

• A_α1⊃A_α2

• A_α1⊆A_α2

• A_α1⊂A_α2

Question 47

Which of the following statements is/are true with regard to various layers in the Internet stack?

P: At the link layer, a packet of transmitted information is called a frame

Q: At the network layer, a packet of transmitted information is called a segment

• P only

• Q only

• P and Q

• Neither P nor Q

Question 48

Consider an LPP given as

Max Z=2x1 - x2 + 2x3

Subject to the constraints

2x1 + x2 ≤ 10

x1 + 2x2 - 2x3 ≤ 20

x1 + 2x3 ≤ 5

x1, x2, x3 ≥ 0

What shall be the solution of the LPP after applying first iteration of the Simplex Method?

• x1=52,x2=0,x3=0,Z=5

•  x1=0,x2=0,x3=52,Z=5

• x1=0,x2=52,x3=0,Z= −5 

• x1=0,x2=0,x3=10,Z=20

Question 49

A Web application and its support environment has not been fully fortified against attack. Web engineers estimate that the likelihood of repelling an attack is only 30 percent. The application does not contain sensitive or controversial information, so the threat probability is 25 percent. What is the integrity of the web application?

• 0.625

• 0.725

•  0.775

• 0.825

Question 50

Which of the following terms best describes Git?

• Issue Tracking System

• Integrated Development Environment

• Distributed Version Control System

• Web-based Repository Hosting Service