CS401 Quiz 2 Set 2 by VU Topper RM

The ASCII code for digit 8 is _________. A. 0x80 B. 0x18

C. 0x38

D. 0x28

The main difference between standard and extended ASCII tables is the number of defined ___________. A. serial ports B. rows and columns on VGA C. I/O ports

D. symbols

After the execution of STOSB and STOSW, the CX register will be ______________ by _______________.

A. decremented, 1

B. incremented, 2 C. incremented, 1 D. decremented, 2

In iAPX88, when an element is popped from the stack, SP is ___________________ by 2.

A. incremented

B. divided C. multiplied D. decremented

The symbols in extended ASCII table by IBM fits in one

A.

byte

B. word C. doubleword D. bit Which of the following is a non-destructive AND operation? A. CMP B. ADC C. NAND

D. TEST ok

ASCII stands for_______. A. American Standard Code for Information Interaction

B. American Standard Code for Information Interchange Google ok

C. American Scientific Communication for Integer Interaction D. American Standard Communication for Integer Interchange

Which of the following is the correct instruction for NOT operation?

1. not byte [var], ax
2. not bx
3. not word [var], ax
4. not ax, bx

Correct answer: not bx

The ________ flag sets if the last mathematical or logical instruction has produced a zero in its destination. A. trap B. sign

C. zero

D. Interrupt

Which type of jump(s) cover the whole memory?

I. Short II. Near III. Far A. I and II B. ll C.

lll

D. l Shift logical Left (SHL) moves all the bits one position to the ______________ and inserts a zero from the ______________. A. left, left B. left, right

C. Right, left Page 52

D. right, right

Which of these hexadecimal numbers is equal to -40 in 2’s complement?

1. FFDD
2. FFFF
3. FFEE
4. FFD8

Correct answer: FFD8

Physical memory address in Intel 8088 processor is determined by the

A. Data Segment register B. Stack Segment register C. Code Segment register

D. Segment register and offset

Which of following assembly code best matches with the instruction A17528?

1. mov ax 2875
2. mov ax, [7528]
3. mov ax, 7528
4. mov ax, [2875]

Correct answer: mov ax, [7528]

In ____________ operation, a carry flag is inserted from the left moving every bit one position to its right. The right most bit is dropped into the carry flag. A. Rotate Left (ROL) B. Rotate Right (ROR)