Checkpoint 13.1.1. What is the OS?
- True
- Correct!
- False
- Incorrect. The OS kernel is still a program (although a special one).
True or False: The operating system is a program that runs on the computer.
Section 13.1 Booting and Running
Checkpoint 13.1.2. Role of OS.
- Power on the CPU
- Correct!
- Load program from disk to RAM
- Incorrect.
- Initialize CPU to start running instructions
- Incorrect.
- Provide efficient use of system resources
- Incorrect.
Which of the following is NOT an example of what an OS does?
Checkpoint 13.1.3. Multiprogramming.
- Sharing computer hardware resources among several running programs.
- Correct!
- Running several programs on a multicore computer.
- Incorrect.
- Being able to run programs written in different programming languages.
- Incorrect.
- Letting many people write programs simultaneously.
- Incorrect.
What is the definition of multiprogramming?
Checkpoint 13.1.4. The Kernel.
- System calls
- Correct!
- Device interface
- Correct!
- Managing how programs use hardware
- Correct!
- Word processing program (such as Microsoft Word)
- Incorrect.
- CPU
- Incorrect.
- RAM
- Incorrect.
Select all of the following that are part of the OS Kernel:
Checkpoint 13.1.5. Mechanism vs. Policy.
Checkpoint 13.1.6. Layers of the Computer System.
- System call interface
- Correct!
- Disk driver
- Incorrect.
- Physical memory (RAM)
- Incorrect.
- Hard drive
- Incorrect.
- Network interface card
- Incorrect.
- Device interface
- Incorrect.
Which part of a computer system does a user’s program directly interact with?
Checkpoint 13.1.7. OS Booting and Running.
- A system call is a software request made by a user program to access services provided by the operating system, while an interrupt is a hardware-triggered event that requires immediate attention from the operating system.
- Correct!
- A system call is a hardware-triggered event, while an interrupt is a software request for a service from the operating system.
- Incorrect.
- A system call is initiated by the operating system to handle hardware events, while an interrupt is initiated by the user process.
- Incorrect.
- Both system calls and interrupts are triggered by hardware but differ in how they are processed by the CPU.
- Incorrect.
Which of the following best describes the key difference between a system call and an interrupt in operating systems?
Checkpoint 13.1.8. OS Booting and Running.
Fill in the blanks with the appropriate word:
In an operating system, mode is the mode in which the operating system executes with full access to all system resources and hardware, while mode is the mode in which user applications run with limited access to system resources to prevent them from directly interacting with critical parts of the system.
