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CS401 Quiz No.2 Shared by Shakeel

1. if we apply NOT operation of bit 1 the answer is also 1
True
False

2.Our computers screen is like a 2-D array having __________ rows and __________ columns.
25-40
25-80
80-25
40-25

3.ASCII table is the contiguous arrangement of the uppercase alphabets (41-5A), the lowercase alphabets (61-7A), and the numbers ________________
31-40
29-39
30-39
31-41

4. To convert the case of a character, we add or subtract _______________ from its ASCII code.
0x10
0x20
0x30
0x41

5. decrements SP (the stack pointer) by two and then transfers a word from source operand to the top of stack now pointed to by SP.___________ 
 push
pop
call
ret

7. The ASCII code for digit 8 is _________.
0x80
0x28
0x18
0x38

8. Stack is:
an algorithm
a data structure
both algorithm and data structure
a procedure

9. Which of the following string instruction is generally used in a loop instead of REP prefix?
SCAS
LODS
CMPS
STOS

10. Which of the following are the two variants of STOS instruction?
STOSB and STOSW
STOS and STOSES
STOS1 and STOS2
STOSA and STOSB


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