OSG202_SU24_B5FE_146098

In the operating system zoo, what is the main priority of time-sharing system over a multiprogramming system?

• The cost of managing smaller processes
• Increase the CPU's performance
• Response time is smaller
• Reduce the burst time of the process

The development of computers has gone through five generations, with many operating systems in use such as FM, UNIX, OS/360, Windows, Linux,... According to you, in the first generation of computers, what operating system did users use to control their computer?

• This stage does not have an operating system.
• Users use the FM operating system.
• Users use the OS/360 operating system.
• Users use the UNIX operating system

The CPU is the most important part of the computer. What is the simple model of the instructions being retrieved from memory and run by the CPU?

• Fetch, decode, and execute
• Fetch, execute, and decode
• Decode, fetch, and execute
• Execute, decode, and fetch

Many popular operating systems, including Windows and Linux, run on multiprocessors. What are the main advantages of multiprocessor systems?

• Increase throughput
• Decrease throughput
• Low-speed communication
• Reduced reliability

Since operating systems interact closely with the hardware, some knowledge of computer hardware is useful for understanding them. Computers are built up of processors, memory, and I/O devices....Which of the following is not a part of the operating system?

• Performance monitor
• Input/output control program
• Job control program
• Supervisor

In Window OS, which command is used to create a new directory?

• Mkdir
• Rmdir
• Chdir
• Chmod

In the FIFO page replacement algorithm, what data structure is commonly used to implement the page replacement queue?

• Stack
• Queue
• Linked list
• Array

A computer has 4GB RAM of which the operating system occupies 2GB. The processes are all 1024 MB and have the same characteristics. How many percent is CPU utilization when these programs are idle waiting for I/O 50% of the time?

• 0.75
• 0.9
• 0.01
• 0.5

What is the primary purpose of process control blocks (PCBs) in process management?

• To display information about running processes on the screen.
• To store the user's program and data.
• To maintain information about each process, including its state, program counter, and CPU registers.
• To allocate memory for new processes.

Which of the following process state transitions(from-to) is illegal?

• Ready, Blocked (waiting)
• Running, Blocked (waiting)
• Blocked, Ready
• Running, Ready