July 2016 - Paper 3

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66:  

A perceptron has input weights W₁ = – 3.9 and W₂ = 1.1 with threshold value T = 0.3.

What output does it give for the input x₁ = 1.3 and x₂ = 2.2 ?

A.	– 2.65
B.	– 2.30
C.	0
D.	1
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	Option: C Explanation : Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments..

67:  

What is the function of following UNIX command ? WC – l b &

A.	It runs the word count program to count the number of lines in its input, a, writing the result to b, as a foreground process.
B.	It runs the word count program to count the number of lines in its input, a, writing the result to b, but does it in the background.
C.	It counts the errors during the execution of a process, a, and puts the result in process b.
D.	It copies the ‘l’ numbers of lines of program from file, a, and stores in file b.
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	Option: B Explanation : Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments..

68:   Which of the following statement is not correct with reference to cron daemon in UNIX
O.S. ?

A.	The cron daemon is the standard tool for running commands on a pre-determined schedule.
B.	It starts when the system boots and runs as long as the system is up.
C.	Cron reads configuration files that contain list of command lines and the times at which they invoked.
D.	Crontab for individual users are not stored.
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	Option: D Explanation : Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments..

69:   In Unix, files can be protected by assigning each one a 9-bit mode called rights bits. Now,
consider the following two statements:

I. A mode of 641 (octal) means that the owner can read and write the file, other
members of the owner�s group can read it, and users can execute only.

II. A mode of 100 (octal) allows the owner to execute the file, but prohibits all other
access.

Which of the following options is correct with reference to above statements ?

A.	Only I is correct.
B.	Only II is correct.
C.	Both I and II are correct.
D.	Both I and II are incorrect.
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	Option: C Explanation : Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments..

70:  

Consider the statement, “Either – 2 ≤ x ≤ – 1 or 1 ≤ x ≤2”. The negation of this statement is

A.	x < – 2 or 2 < x or – 1 < x < 1
B.	x < – 2 or 2 < x
C.	– 1 < x < 1
D.	x ≤ – 2 or 2 < x or – 1 < x < 1
	Answer Report Discuss
	Option: A Explanation : Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments..

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