Intoduction to OS

What is an operating system?

• all of the mentioned

• interface between the hardware and application programs

• collection of programs that manages hardware resources

• system service provider to the application programs

CPU scheduling is the basis of ___________

• multiprogramming operating systems

• larger memory sized systems

• multiprocessor systems

• none of the mentioned

Which of the following is NOT a function of an operating system?

• Virus Scanning

• Memory Management

• Process Scheduling

• File Management

The operating system is a type of:

• System Software

• Application Software

• Compiler

• Utility

In a mobile phone, music continues playing while a file is being downloaded and the user is chatting. Which OS concept allows all these to happen simultaneously?

• Multiprogramming

• Batch processing

• Spooling

• Time-sharing

A user runs a heavy simulation on a shared system, while 10 other users also access the same system remotely. Each user feels like they are the only one using it. What makes this possible?

• Time-sharing

• Multiprogramming

• Deadlock

• Paging

Which situation best illustrates the need for multiprogramming?

• A computer switching between a download, video playback, and a background update

• A computer that runs a game for multiple users online

• A computer running one large process that uses 100% CPU

• A mobile app that uses sensors to record real-time data

What is the main reason time-sharing systems use time quantum (time slices)?

• To allow multiple users fair access to the CPU

• To reduce I/O wait time

• To reduce power consumption

• To prevent memory leaks

When a new program is opened, the OS loads it into memory and allocates necessary space. What is this an example of?

• Memory management

• File transfer

• Process scheduling

• Input handling

Which of the following is a primary function of an operating system?

• Managing computer hardware and software resources

• Creating websites

• Compiling source code

• Designing user interfaces