Lesson 4 - Operating Systems Structure Quiz

The portion of the OS code that is always resident in memory is known as the:

• Compiler

• Assembler

• Text Editor

• Kernel

Which of the following instructions is NOT an example of a privileged instruction:

• Reading the system time

• Set CPU modes

• Turns interrupts on and off

• Virtual memory on and off

An application makes a system request of an operating system service. The application made which type of call?

• Supervisor

• System

• Monitor

• Privilege

Interrupts are a key part of how the OS and hardware interact. An interrupt is:

• An event triggered by a hardware signal sent to the CPU from an external device

• Stored in ROM and loaded at start-up

• Called to access a shared library function

• Called to invoke a data structure operation

Why have kernel-mode device drivers been targets for hackers?

• To provide access to kernel memory

• To improve system performance

• To enhance user experience

• To increase device compatibility

Which of the following is not common OS architecture?

• Monolithic

• Layered

• Microkernel

• Cyclic

Operating systems provide a variety of services. What service is responsible for managing moving data in and out of devices?

• I/O Operations

• File System

• Security

• Resource Allocation

What is the difference between a program and a process?

• Programs are stored in ROM, while processes are stored in RAM

• Programs have a distinct entry point and exit point, while processes have a state

• Programs are passive collections of instructions, while processes are active instances of a program being executed

• Programs are executed by interpreters, while processes are executed by compilers

A user opens Microsoft Word on a computer. As a result, what action does the OS perform?

• Transfers process control

• Creates a new process

• Creates a context switch

• Changes the CPU state

What is the term used to describe a situation in an operating system where two or more processes are unable to proceed because each is waiting for the other to release a resource, and none of them is willing to release its own resources?

• Race Condition

• Trashing

• Deadlock

• Starvation