Ch 08: String Instructions and Primitives

Comprehensive study of x86 string primitives operating across DS:SI and ES:DI, hardware-accelerated memory copy, screen clearing via STOSW, string length calculation via SCASB, and string comparison via CMPSB.

307 Questions307 MCQs0 Short Questions0 Long Questions

🎯 Exam Practice Papers

CS401 - Computer Architecture and Assembly Language Programming Examination Practice

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

Showing 101 – 110 of 307 Questions

Page 11 of 31

Q101

❓ MCQ📘 CS401📑 Lec 8🏷️ Processor Exceptions and Automatic INT 0 GenerationEasy🔁⭐💡📄🎓VU🏛️VU

When an arithmetic division by zero occurs during program execution in an 8088 CPU, how is the Divide-by-Zero interrupt triggered?

💻 assembly Snippet

mov ax, 10
mov bl, 0
div bl

A.By executing 'INT 0' instruction explicitly
B.By executing 'INT 1' instruction explicitly
C.By executing 'INT 2' instruction explicitly
D.It is generated automatically by hardware exception

Q102

❓ MCQ📘 CS401📑 Lec 8🏷️ DOS Interrupt 21h Character Input ServicesEasy🔁⭐💡📄🎓VU🏛️VU

DOS INT 21h Service 01h is used to read a character from standard input with screen echo. In which register does it return the character's ASCII code?

💻 assembly Snippet

mov ah, 0x01
int 0x21

A.AL
B.BL
C.CL
D.BH

Q103

❓ MCQ📘 CS401📑 Lec 8🏷️ BIOS Disk Access vs DOS File System AbstractionMedium🔁⭐💡📄🎓VU🏛️VU

How does system BIOS view physical disk storage media compared to operating systems like DOS?

A.Logical storage (files and directories)
B.Raw storage (in the form of physical sectors)
C.Virtual memory blocks
D.Partition tables only

Q104

❓ MCQ📘 CS401📑 Lec 8🏷️ Hardware Interrupt Requests and IRQ ConflictsEasy🔁⭐💡📄🎓VU🏛️VU

What occurs when two hardware devices in an x86 system attempt to share the same unshareable Interrupt Request (IRQ) line simultaneously?

A.An IRQ Collision
B.An IRQ Conflict
C.An IRQ Crash
D.An IRQ Blockage

Q105

❓ MCQ📘 CS401📑 Lec 8🏷️ Hardware Interrupt Requests and Keyboard Controller (IRQ 1)Easy🔁⭐💡📄🎓VU🏛️VU

Which hardware Interrupt Request (IRQ) line is assigned to the keyboard controller in IBM PC architecture?

A.IRQ 0
B.IRQ 1
C.IRQ 2
D.IRQ 3

Q106

❓ MCQ📘 CS401📑 Lec 8🏷️ Hardware IRQ Assignments for Disk Controllers (IRQ 6)Easy🔁⭐💡📄🎓VU🏛️VU

Which hardware Interrupt Request (IRQ) line is used by the Floppy Disk Drive controller?

A.IRQ 4
B.IRQ 5
C.IRQ 6
D.IRQ 7

Q107

❓ MCQ📘 CS401📑 Lec 8🏷️ Hardware CPU Exceptions and INT 0 GenerationEasy🔁⭐💡📄🎓VU🏛️VU

When an arithmetic division by zero occurs during program execution in an 8088 CPU, how is the 'Division by 0' interrupt generated?

💻 assembly Snippet

mov ax, 10
mov bl, 0
div bl

A.INT 0 instruction in code
B.INT 1 instruction in code
C.INT 2 instruction in code
D.This interrupt is generated automatically by hardware

Q108

❓ MCQ📘 CS401📑 Lec 8🏷️ 8259 PIC IRQ Priority LevelsEasy🔁⭐💡📄🎓VU🏛️VU

Among hardware interrupt lines managed by the 8259 Programmable Interrupt Controller (PIC), what is the priority level of IRQ 0?

A.Medium
B.High
C.Highest
D.Low

Q109

❓ MCQ📘 CS401📑 Lec 8🏷️ BIOS Interrupt Services (INT 10h)Easy🔁⭐💡📄🎓VU🏛️VU

Interrupt INT 10h is dedicated to providing __________ system services in PC architecture.

💻 assembly Snippet

mov ah, 0x0E
mov al, 'A'
int 0x10

A.RAM
B.Disk
C.BIOS video
D.DOS video

Q110

❓ MCQ📘 CS401📑 Lec 8🏷️ Arithmetic Overflow Interrupt (INT 4)Medium🔁⭐💡📄🎓VU🏛️VU

Which software interrupt vector is dedicated to handling arithmetic overflow exceptions triggered by the INTO instruction?

💻 assembly Snippet

into

A.INT 1
B.INT 2
C.INT 3
D.INT 4

Ch 08: String Instructions and Primitives

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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