Question Discussion & Solution

The correct answer is option 2.

Concept:

A process control block (PCB) is a data structure used by computer operating systems to store all process-related information. A process descriptor is another name for it. The operating system creates a process control block when a process is created (initialized or installed).

Process Control is a set of system calls that perform tasks such as process creation, termination, and so on.

Process Control Functions:

• End and Abort
• Load and Execute
• Abort, end
• Create Process and Terminate Process
• Wait and Signal Event
• Allocate and free memory.

Hence the correct answer is process control.

Additional Information File Management:

File manipulation tasks such as creating, reading, and writing is handled by file management system calls.

File manipulation Functions:

• Create a file
• Delete file
• Open and close file
• Read, write, and reposition
• Get and set file attributes

Device Management:

Device management is responsible for device manipulation such as reading from and writing to devise buffers.

Device management Functions:

• Request and release device
• Logically attach/ detach devices
• Get and Set device attributes

Information Maintenance:

It handles information and its transfer between the OS and the user program.

Information Maintenance Functions:

• Get or set time and date
• Get process and device attributes

Judge is the head in the court while the Principal is the head in a college.

Given: Sportspersons, Shooters, Swimmers

Logic: All shooters and swimmers are sportspersons but shooters and swimmers have no common relation.

Hence, option (2) is the correct answer.

Given series U, R, O, L, I, ?

We subtract 3 in each letter we get-

Hence, "F" is the correct answer.

Given : Cobbler : Shoes – Cobbler mends our shoes.

Electrician : Screw – Screw is a tool used by electricians.

Carpenter : Jig – Jig is a tool used by carpenters.

Mechanic : Car – Mechanic mends our cars.

Manager : Office – Manager is a superior person who handles the administrative work of an office.