Display Memory

Lecture 16: Display Memory

216 Questions192 MCQs19 Short Questions5 Long Questions

Showing 81 – 90 of 216 Questions

Page 9 of 22

Q81❓ MCQ📑 Lec 6Easy🔁Repeated⭐High-Yield💡Conceptual

When comparing two operands (`CMP DEST, SRC`), if the result sets the Zero Flag (`ZF = 1`), what does this indicate about the operands?

💻 assembly Snippet

cmp ax, bx ; Performs AX - BX
; If AX == BX, ZF = 1

A.DEST = SRC
B.DEST != SRC
C.DEST < SRC
D.DEST > SRC

Q82❓ MCQ📑 Lec 6Easy🔁Repeated⭐High-Yield💡Conceptual

True or False: In x86 assembly language, `SHL` (Shift Logical Left) and `SAL` (Shift Arithmetic Left) are identical in operation and assemble to the exact same machine opcodes.

💻 assembly Snippet

shl ax, 1 ; Identical to sal ax, 1
sal ax, 1 ; Identical opcode and behavior as shl

A.True
B.False

Q83❓ MCQ📑 Lec 6Easy🔁Repeated⭐High-Yield💡Conceptual

True or False: The `JA` (Jump if Above) instruction CANNOT be taken after a `CMP` instruction if the unsigned destination operand is greater than the source operand.

💻 assembly Snippet

cmp ax, bx
ja label ; Jumps if AX > BX (unsigned)

A.true
B.false

Q84❓ MCQ📑 Lec 6Easy🔁Repeated⭐High-Yield💡Conceptual

In 8088/8086 assembly language architecture, conditional jump instructions (such as `JZ`, `JNZ`, `JC`, `JNC`) can perform only which type of jump?

💻 assembly Snippet

jz short_label ; Short jump (-128 to +127 bytes displacement)

A.Far
B.short
C.near
D.all of the given

Q85❓ MCQ📑 Lec 6Easy🔁Repeated⭐High-Yield💡Conceptual

True or False: In 8088/8086 assembly language, a Near Jump allows transferring execution to any target offset within the same 64 KB code segment.

💻 assembly Snippet

jmp near target_label ; Near jump within same 64KB CS segment

A.TRUE
B.FALSE

Q86❓ MCQ📑 Lec 6Easy🔁Repeated⭐High-Yield💡Conceptual

In 8088/8086 assembly language architecture, conditional jump instructions (such as `JZ`, `JNZ`, `JC`, `JNC`) are restricted to which type of branch displacement?

💻 assembly Snippet

jz short_label ; Short relative jump (-128 to +127 bytes)

A.far
B.near
C.short
D.all of the given

Q87❓ MCQ📑 Lec 6Medium🔁Repeated⭐High-Yield💡Conceptual

If register `AX` contains decimal `-2` (`0xFFFE`) and register `BX` contains decimal `2` (`0x0002`), what occurs upon executing `CMP AX, BX` followed by `JA label`?

💻 assembly Snippet

mov ax, -2 ; AX = 0xFFFE (65534 unsigned)
mov bx, 2  ; BX = 0x0002 (2 unsigned)
cmp ax, bx ; Performs 0xFFFE - 0x0002 -> CF = 0, ZF = 0
ja  label  ; Jump IS taken because 65534 > 2

A.Zero flag will set
B.Jump will be taken
C.ZF will contain value -4
D.Jump will not be taken

Q88❓ MCQ📑 Lec 6Easy🔁Repeated⭐High-Yield💡Conceptual

How many explicit operands does the `ADC` (Add with Carry) instruction accept in x86 assembly language?

💻 assembly Snippet

adc ax, bx ; Destination = AX, Source = BX (2 operands)

Q89📝 Short Q📑 Lec 6Easy🔁Repeated⭐High-Yield💡Conceptual

Explain the difference between `SHR` (Shift Logical Right) and `SAR` (Shift Arithmetic Right) instructions in x86 assembly language.

💻 assembly Snippet

shr ax, 1 ; Logical right shift (fills MSB with 0)
sar ax, 1 ; Arithmetic right shift (preserves MSB sign bit)

Q90📝 Short Q📑 Lec 6Easy🔁Repeated⭐High-Yield💡Conceptual

In x86 assembly language, explain the operation and mechanics of the `ADC` (Add with Carry) instruction, and how it is used for multi-word addition.

💻 assembly Snippet

; Adding 32-bit integers (DX:AX) + (CX:BX)
add ax, bx ; Add lower 16 bits (sets CF if carry occurs)
adc dx, cx ; Add upper 16 bits plus Carry Flag (CF)

Display Memory

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