Grade 13 Computer Science Unit II - Unit Test 3 - 2023

A process is said to be blocked when

• the CPU is unavailable
• it has now entered the system
• it is waiting for I/O and cannot use the CPU if it were free
• processes with higher priority are given CPU time

Two processes are said to be deadlocked when

• they are awaiting I/O
• they are denied CPU time by processes with higher priority
• neither can proceed because each is waiting on the other to do something
• they are about to be killed

What type of scheduling algorithm ensures that any given instant the process with the highest priority in the system is using the CPU?

• Pre-emptive
• Non pre-emptive
• FCFS
• Non pre-emptive SJF

The BEST definition of an ‘interrupt’ is?

• A period in time when the CPU does nothing
• A signal sent to get CPU situation
• A time when a processed is blocked
• A signal sent when a process is complete

All the following are functions of the operating system EXCEPT?

• Resource Manager
• User Interface
• File Manager
• User Guidance

Within this year, batch processing was introduced in operating systems development.

• 1950s
• 1960s
• 1970
• 1980s

This is a component of the process control block (PCB) which indicates the address of the next instruction to be executed for a particular process.

• CPU Registers
• CPU Scheduling Information
• Accounting Information
• Program Counter

Which piece of information does a process control block NOT contain?

• Amount of CPU time used
• Estimated time to completion
• Job priority
• Process ID

Which of the following determines the amount of time a running process gets to use the CPU when a round-robin scheduling algorithm is used?

• The order of arrival of process on the ready queue
• The priority of the process
• The estimated running time of the process
• The time is fixed by the operating system

A running process initiates an input request to get data from the keyboard. Which of the following state transitions will take place when the data is made available?

• Ready to running
• Running to ready
• Blocked to ready
• Blocked to running