Computer Science Study Materials for Competitive Exams

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Saturday, 2 December 2017

CBSE UGC NET Computer Science Paper III Solved November 2017 - Part 8

71.       Consider a single perceptron with sign activation function. The perceptron is represented by weight vector [0.4 −0.3 0.1]t and a bias θ=0. If the input vector to the perceptron is X=[0.2 0.6 0.5] then the output of the perceptron is :
(1) 1
(2) 0
(3) −0.05
(4) −1
Answer: 3
72.       The Sigmoid activation function f(t) is defined as :
Answer: 4
73.       Consider the following statements :
(a) UNIX provides three types of permissions
* Read
* Write
* Execute
(b) UNIX provides three sets of permissions
* permission for owner
* permission for group
* permission for others
Which of the above statement/s is/are true?
(1) Only (a)
(2) Only (b)
(3) Both (a) and (b)
(4) Neither (a) nor (b)
Answer: 3
74.       Which of the following routing technique / techniques is / are used in distributed systems?
(a) Fixed Routing
(b) Virtual Routing
(c) Dynamic Routing
Code :
(1) (a) only
(2) (a) and (b) only
(3) (c) only
(4) All (a), (b), (c)
Answer: 4
75.       Match the following WINDOWS system calls and UNIX system calls with reference to process control and File manipulation.
Windows
(a) Create - process ()
(b) WaitForSingleObject ()
(c) CreateFile ()
(d) CloseHandle ()
UNIX
(i) Open ()
(ii) Close ()
(iii) Fork ()
(iv) Wait ()
Code :
      (a) (b) (c) (d)
(1) (iii) (iv) (i) (ii)
(2) (iv) (iii) (i) (ii)
(3) (iv) (iii) (ii) (i)
(4) (iii) (iv) (ii) (i)
Answer: 1

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