AHJN: Unit16-System Software

What is the main purpose of the bootstrap program in a computer system?

• To manage user interface

• To load the operating system into main memory

• To execute multitasking operations

• To initialize input/output devices

Which type of memory is divided into two parts, one for the operating system and the other for applications and associated data in mobile devices?

• RAM

• Flash Memory

• Cache Memory

• Virtual Memory

What is the primary role of the Direct Memory Access (DMA) controller?

• To manage user inputs during I/O operations

• To handle memory allocation in the CPU

• To allow hardware to access main memory independently of the CPU

• To prioritize CPU tasks

What does the kernel of an operating system NOT do?

• Process management

• Device management

• Word processing

• Interrupt handling

Which scheduling algorithm uses equal time slices for each process in the ready queue?

• Shortest Job First

• Round Robin

• First Come First Served

• Shortest Remaining Time

Which statement best describes virtual memory?

• A hardware feature that increases physical memory

• An extension of physical memory using disk storage

• A technique to optimize CPU usage

• A program management method for multitasking

Which page replacement method looks forward in time to decide which page to replace during a page fault?

• First In First Out (FIFO)

• Least Recently Used (LRU)

• Optimal Page Replacement (OPR)

• Second-Chance Page Replacement

What is the main drawback of using virtual memory?

• Excessive CPU usage

• Increased physical RAM requirements

• Disk thrashing due to frequent page swapping

• Limited application size

During interrupt handling, what is the purpose of the Interrupt Dispatch Table (IDT)?

• To assign interrupts a priority level

• To save the state of a suspended process

• To provide the address of the routine to handle the interrupt

• To manage kernel-level multitasking

What does lexical analysis do in the compilation process?

• Optimizes the object code

• Translates source code into machine-readable instructions

• Converts source programs into tokens

• Analyzes syntax for grammatical errors