Ch 13: Multitasking & Cooperative Kernels

Covers thread and process abstractions at the assembly level, initializing independent task stacks, switching execution contexts via register swapping, and cooperative scheduling algorithms.

141 Questions141 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 21 – 30 of 141 Questions

Page 3 of 15

Q21

❓ MCQ📘 CS401📑 Lec 13🏷️ 13.1. Multitasking, Multi-threading, and Thread CreationEasy🔁⭐💡📄🎓VU🏛️VU

In multitasking systems, the creation of threads can be ________.

A.Both Static and Dynamic
B.Static only
C.Dynamic only
D.Neither Static nor Dynamic

Q22

❓ MCQ📘 CS401📑 Lec 13🏷️ 13.1. Operating System Concepts (PSP Command Tail Offset 0x82)Medium🔁⭐💡📄🎓VU🏛️VU

In a DOS COM executable file, the first command-line parameter text is stored starting at which offset within the Program Segment Prefix (PSP)?

A.0x80
B.0x82
C.0x84
D.0x86

Q23

❓ MCQ📘 CS401📑 Lec 13🏷️ 13.1. Operating System Concepts (DOS INT 0x21 Function 0x3D Error Handling)Medium🔁⭐💡📄🎓VU🏛️VU

When calling DOS service `INT 0x21` with function `AH = 0x3D` (Open File), if the file cannot be opened, how does DOS indicate the error?

💻 assembly Snippet

mov ah, 0x3d
mov al, 0
mov dx, filename
int 0x21
jc file_open_error ; Jumps if CF == 1

A.CF will contain 1
B.CF will contain 0
C.ZF will contain 1
D.ZF will contain 0

Q24

❓ MCQ📘 CS401📑 Lec 13🏷️ 13.1. Operating System Concepts (Multitasking and OS Scheduler)Medium⭐💡📄🎓VU🏛️VU

In operating system kernel multithreading, thread registration code initializes a Process Control Block (PCB) and attaches it to the ready queue list so that which OS component can assign it CPU execution time?

A.Assembler
B.Scheduler
C.Linker
D.Debugger

Q25

❓ MCQ📘 CS401📑 Lec 13🏷️ 13.1. Operating System Concepts (Static and Dynamic Thread Creation)Easy⭐💡📄🎓VU🏛️VU

In operating systems and concurrent programming, thread creation can be __________.

A.Static
B.Dynamic
C.Both
D.None of the above

Q26

❓ MCQ📘 CS401📑 Lec 13🏷️ 13.1. Operating System Concepts (Multitasking Context Switching)Medium🔁⭐💡📄🎓VU🏛️VU

During context switching in an operating system kernel, register states and stack pointers for all active tasks/threads are saved during __________.

A.Multitasking
B.Multi Processing
C.Function Call
D.BIOS

Q27

❓ MCQ📘 CS401📑 Lec 13🏷️ 13.1. Multitasking and Process Management (Multitasking OS Scheduler)Easy🔁⭐💡📄🎓VU🏛️VU

Thread registration routines initialize the Process Control Block (PCB) and insert it into the ready queue linked list so that which operating system component can allocate CPU execution turns to it?

A.Assembler
B.Linker
C.Scheduler
D.Debugger

Q28

❓ MCQ📘 CS401📑 Lec 13🏷️ 13.1. High-Level Language Interface (C vs Pascal Calling Conventions)Easy🔁⭐💡📄🎓VU🏛️VU

How many prevalent parameter passing / function calling conventions exist and are primarily discussed in assembly language programming (specifically C and Pascal calling conventions)?

Q29

📝 Short Q📘 CS401📑 Lec 13🏷️ 13.1. High-Level Language Interface (C vs Pascal Stack Parameter Cleanup Responsibility)Easy🔁⭐💡📄🎓VU🏛️VU

Who is responsible for removing parameters from the stack when calling a function in the C calling convention versus the Pascal calling convention?

💻 assembly Snippet

; C Calling Convention (Caller cleans stack):
call c_func
add sp, 4 ; Caller removes 4 bytes of parameters

; Pascal Calling Convention (Callee cleans stack):
call pascal_func
; Inside pascal_func: ret 4 ; Callee removes 4 bytes

Q30

📝 Short Q📘 CS401📑 Lec 13🏷️ Storage Access Using BIOS Disk ServicesMedium⭐💡🌟📄🎓VU🏛️VU

How is data written directly to a disk sector using BIOS disk services in assembly language?

💻 assembly Snippet

mov ah, 0x03
mov al, 1
mov ch, 0
mov cl, 2
mov dh, 1
mov dl, 0
mov bx, buffer
int 0x13

Ch 13: Multitasking & Cooperative Kernels

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

📖 Related CS401 - Computer Architecture and Assembly Language Programming Curriculum Units