Ch 03: Branching, Loops and Program Flow

Examines program control flow in assembly, flag register evaluation (ZF, CF, SF, OF), relative displacement jumps, implementing loops, and bubble sort sorting algorithms in assembly.

261 Questions261 MCQs0 Short Questions0 Long Questions

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CS401 - Computer Architecture and Assembly Language Programming Examination Practice

Timed practice exam simulation for CS401 - Computer Architecture and Assembly Language Programming.

Showing 61 – 70 of 261 Questions

Page 7 of 27

Q61

❓ MCQ📘 CS401📑 Lec 3🏷️ 3.1. Basic Assembly Instructions (MUL Unsigned Multiplication)Easy🔁⭐💡📄🎓VU🏛️VU

Which x86 assembly instruction performs an unsigned multiplication of the source operand and the accumulator register?

💻 assembly Snippet

mov ax, 25
mov bx, 4
mul bx ; AX * BX -> Product in DX:AX (0x0000:0x0064)

A.Multi
B.DIV
C.MUL
D.Move

Q62

❓ MCQ📘 CS401📑 Lec 3🏷️ 3.1. Basic Assembly Instructions (Little-Endian Machine Instruction Encoding)Medium🔁⭐💡📄🎓VU🏛️VU

If `BB` is the opcode for moving a 16-bit constant to register `BX` (or `B8` for `AX`), and decimal constant 336 equals hex `0x0150`, what is the hexadecimal representation of the instruction `MOV AX, 336` (`0x0150`) using x86 Little-Endian byte ordering (where opcode is `BB` as specified in question prompt)?

💻 assembly Snippet

; Instruction: MOV AX, 0x0150
; Opcode = BB, Immediate = 0x0150 (Low byte = 50, High byte = 01)
; Machine encoding bytes: BB 50 01 -> 0xBB5001

A.0xBB0150
B.0x5001BB
C.0x01BB50
D.0xBB5001

Q63

❓ MCQ📘 CS401📑 Lec 3🏷️ 3.1. Basic Assembly Instructions (Instruction Operand Counting)Easy🔁⭐💡📄🎓VU🏛️VU

In the assembly instruction `MOV AX, 5`, how many operands are present?

💻 assembly Snippet

mov ax, 5 ; 2 operands: AX (destination), 5 (source)

Q64

❓ MCQ📘 CS401📑 Lec 3🏷️ 3.1. Register Architecture (CX Count Register)Easy🔁⭐💡📄🎓VU🏛️VU

In assembly language, the CX register is normally used as a __________ register.

💻 assembly Snippet

mov cx, 10 ; Load iteration count 10 into CX

A.source
B.counter
C.index
D.pointer

Q65

❓ MCQ📘 CS401📑 Lec 3🏷️ 3.1. Basic Assembly Instructions (8-Bit DIV Dividend Register AX)Easy🔁⭐💡📄🎓VU🏛️VU

When a 16-bit dividend is divided by an 8-bit divisor (`DIV reg8`), which register must hold the 16-bit dividend prior to division?

💻 assembly Snippet

mov ax, 200 ; 16-bit dividend in AX
mov bl, 10  ; 8-bit divisor in BL
div bl      ; AL = 20 (Quotient), AH = 0 (Remainder)

A.AX
B.BX
C.CX
D.DX

Q66

❓ MCQ📘 CS401📑 Lec 3🏷️ 3.1. Register Architecture (Index Registers SI and DI Function)Easy🔁⭐💡📄🎓VU🏛️VU

In x86 assembly language architecture, what primary data type do Index Registers (such as `SI` and `DI`) store during memory access?

💻 assembly Snippet

mov si, offset_data ; SI holds memory address offset

A.Address
B.Data
C.Intermediate result
D.Both data and addresses

Q67

❓ MCQ📘 CS401📑 Lec 3🏷️ 3.1. Register Architecture (FLAGS Register Bit Significance)Easy🔁⭐💡📄🎓VU🏛️VU

In which processor register do the individual bits work independently and bit-wise individually to hold distinct status flags or control states?

A.flags register
B.index register
C.base register
D.accumulator

Q68

❓ MCQ📘 CS401📑 Lec 3🏷️ 3.1. Basic Assembly Instructions (16-Bit DIV Quotient Width)Easy🔁⭐💡📄🎓VU🏛️VU

When a 32-bit dividend stored in register pair DX:AX is divided by a 16-bit divisor operand using `DIV`, what is the bit width of the resulting quotient stored in AX?

💻 assembly Snippet

div cx ; Quotient (16-bit) stored in AX, Remainder (16-bit) stored in DX

A.4 bits
B.32 bits
C.16 bits
D.8 bits

Q69

❓ MCQ📘 CS401📑 Lec 3🏷️ 3.1. Basic Assembly Instructions (8-Bit DIV Quotient Register AL)Easy🔁⭐💡📄🎓VU🏛️VU

When a 16-bit dividend in AX is divided by an 8-bit divisor operand using `DIV`, in which register is the quotient placed?

💻 assembly Snippet

div bl ; Quotient stored in AL, Remainder stored in AH

A.AL
B.AX
C.AH
D.DX

Q70

❓ MCQ📘 CS401📑 Lec 3🏷️ 3.1. Basic Assembly Instructions (ADC Operand Count)Easy🔁⭐💡📄🎓VU🏛️VU

How many explicit operands does the Add with Carry instruction `ADC` take in assembly language syntax?

💻 assembly Snippet

adc ax, bx ; 2 explicit operands: AX (destination) and BX (source)

Ch 03: Branching, Loops and Program Flow

CS401 - Computer Architecture and Assembly Language Programming Examination Practice

Mid Term Examination

Final Term Examination

CS401 - Computer Architecture and Assembly Language Programming Examination Practice

Mid Term Examination

Final Term Examination

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