NIC-NIELIT Scientist-B 2020
October 16, 2023UGC NET CS 2015 June Paper-3
October 16, 2023UGC NET CS 2009 Dec-Paper-2
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Question 3
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If in an error detection and correction code a message M : “You are good students” is stored as M’ : Youare areyou aregood goodare goodstudents studentsgood. What is the space required to store M’ in general ? (assume that ‘n’ is the length of M)
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2n
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3n
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4n
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less than 4n
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Question 3 Explanation:
Message M: “You are good students” is stored as M’
The message length is “n”.
The following string is “Youare areyou aregood goodare goodstudents studentsgood” divided as follows
You are good students — n
are you students good —- n
are good —– n
good are —– n
Then total messages length is 4n.
The message length is “n”.
The following string is “Youare areyou aregood goodare goodstudents studentsgood” divided as follows
You are good students — n
are you students good —- n
are good —– n
good are —– n
Then total messages length is 4n.
Correct Answer: C
Question 3 Explanation:
Message M: “You are good students” is stored as M’
The message length is “n”.
The following string is “Youare areyou aregood goodare goodstudents studentsgood” divided as follows
You are good students — n
are you students good —- n
are good —– n
good are —– n
Then total messages length is 4n.
The message length is “n”.
The following string is “Youare areyou aregood goodare goodstudents studentsgood” divided as follows
You are good students — n
are you students good —- n
are good —– n
good are —– n
Then total messages length is 4n.
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