GATE CS 2021 Set 2 — Question 54
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Computer Organization & Architecture → Instructions & Addressing Modes
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Question
If the numerical value of a 2-byte unsigned integer on a little endian computer is 255 more than that on a big endian computer, which of the following choices represent(s) the unsigned integer on a little endian computer?
Correct answer
(A) 0x6665; (D) 0x0100
Solution
Let the two bytes in memory be and at addresses and respectively.
The question asks for the representation of the integer on a little endian computer, which is the value . In hexadecimal, this is .
Checking the options:
(A) 0x6665: . . (Correct)
(B) 0x0001: . . (Incorrect)
(C) 0x4243: . . (Incorrect)
(D) 0x0100: . . (Correct)
- On a Big Endian computer, the most significant byte is at the lower address: .
- On a Little Endian computer, the least significant byte is at the lower address: .
The question asks for the representation of the integer on a little endian computer, which is the value . In hexadecimal, this is .
Checking the options:
(A) 0x6665: . . (Correct)
(B) 0x0001: . . (Incorrect)
(C) 0x4243: . . (Incorrect)
(D) 0x0100: . . (Correct)
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