Question

a) Explain the various function of Operating System in
brief.
7​

Answer 1

Answer:

Process management:- Process management helps OS to create and delete processes. It also provides mechanisms for synchronization and communication among processes.

Memory management:- Memory management module performs the task of allocation and de-allocation of memory space to programs in need of this resources.

File management:- It manages all the file-related activities such as organization storage, retrieval, naming, sharing, and protection of files.

Device Management: Device management keeps tracks of all devices. This module also responsible for this task is known as the I/O controller. It also performs the task of allocation and de-allocation of the devices.

I/O System Management: One of the main objects of any OS is to hide the peculiarities of that hardware devices from the user.

Secondary-Storage Management: Systems have several levels of storage which includes primary storage, secondary storage, and cache storage. Instructions and data must be stored in primary storage or cache so that a running program can reference it.

Security:- Security module protects the data and information of a computer system against malware threat and authorized access.

Command interpretation: This module is interpreting commands given by the and acting system resources to process that commands.

Networking: A distributed system is a group of processors which do not share memory, hardware devices, or a clock. The processors communicate with one another through the network.

Job accounting: Keeping track of time & resource used by various job and users.

Communication management: Coordination and assignment of compilers, interpreters, and another software resource of the various users of the computer systems.

Answer 2

Answer:-

An operating system has three main functions: (1) manage the computer's resources, such as the central processing unit, memory, disk drives, and printers, (2) establish a user interface, and (3) execute and provide services for applications software. ... Thus you both establish a user interface and execute software.

Some others are:-

1) File Management.

2) Device Management.

3) Processor Management.

4) Memory Management.

5) Coordination between other software and users.

6) Error detecting aids.

7) Job accounting.

8) Control over system performance.

9) Security.