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## Computer organization questions answers aptitude test

 Question 1 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which method/s of representation of numbers occupies a large amount of memory than others?
 A Sign-magnitude B 1's complement C 2's complement D 1's & 2's compliment
Question 1 Explanation:
It takes more memory as one bit used up to store the sign.
 Question 2 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which representation is most efficient to perform arithmetic operations on the numbers?
 A Sign-magnitude B 1's complement C 2'S complement D None of the mentioned
Question 2 Explanation:
The two's complement form is more suitable to perform arithmetic operations as there is no need to involve the sign of the number into consideration.
 Question 3 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which method of representation has two representations for '0'?
 A Sign-magnitude B 1's complement C 2's complement D None of the mentioned
Question 3 Explanation:
One is positive and one for negative.
 Question 4 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
When we perform subtraction on -7 and 1 the answer in 2's complement form is .....
 A 1010 B 1110 C 110 D 1000
Question 4 Explanation:
First the 2's complement is found and that is added to the number and the overflow is ignored.
 Question 5 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
When we perform subtraction on -7 and -5 the answer in 2's complement form is .....
 A 11110 B 1110 C 1010 D 10
Question 5 Explanation:
First the 2's complement is found and that is added to the number and the overflow is ignored.
There are 5 questions to complete.