Computer ArithmeticRepresentation of Numbers (NTANET (Based on NTAUGC) Computer Science (PaperII)): Questions 1  4 of 42
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Question number: 1
» Computer Arithmetic » Representation of Numbers » Octal, Hex, Decimal, and Binary
Appeared in Year: 2010
Question
What is decimal equivalent of ? (June Paper II)
Choices
Choice (4)  Response  

a.  20.2 

b.  22.2 

c.  22.0 

d.  21.2 

Question number: 2
» Computer Arithmetic » Representation of Numbers » 2'S Complement and 1'S Complement Arithmetic
Appeared in Year: 2010
Question
The value of the following expression is (December Paper II)
Choices
Choice (4)  Response  

a.  5.75 

b.  2.95 

c.  1.4875 

d.  5 

Question number: 3
» Computer Arithmetic » Representation of Numbers » Octal, Hex, Decimal, and Binary
Appeared in Year: 2010
Question
The decimal number equivalent of is (December Paper II)
Choices
Choice (4)  Response  

a. 


b. 


c.  2095.0937 

d. 


Question number: 4
» Computer Arithmetic » Representation of Numbers » Octal, Hex, Decimal, and Binary
Appeared in Year: 2010
Question
For your ATM debit card, you have a 4decimaldigit personal secret code. In the absence of any clue, a bruteforce attack takes time‘t’ to crack the code on an ATM terminal. Therefore ‘t’ is the securetime for a customer to report in case the card is misplaced. Your Bank has decided to facilitate an increased securetime. Out of the following, which option should provide the largest rise in the value of ‘t’? (June Paper II)
Choices
Choice (4)  Response  

a.  Instead of 4decimaldigits, maintain the personal secret code in 4hexadecimaldigits. 

b.  Instead of 4decimal digits, maintain a 5decimaldigit personal secret code. 

c.  Reduce the processing speed of the ATM terminals to the half of their current speed. 

d.  All of the above 
