Notes for 6.1.3 Multi-Access and Multi-Programming Environments - IB | RevisionDojo
6.1.3 Multi-Access and Multi-Programming Environments Notes
Multi-Access and Multi-Programming Environments
In resource management, it is essential to understand what other factors, other than hardware, can influence the system requirements.
Multi-Access Systems
Definition
Multi-Access Environment
An environment that allows multiple users to interact with a single computer system simultaneously.
Multi-access systems introduce problems such as:
Resource contention: Multiple users competing for the same resources.
Security risks: Unauthorised access to data or applications.
Potential solutions can be:
Implementing strong access controls.
Optimising resource allocation to prioritise critical tasks.
Example
Unix is an example of an operating system that supports multi-access, allowing multiple users to run programs concurrently while maintaining data security.
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Note
Introduction to Multi-Access and Multi-Programming Environments
In modern computing, systems are designed to handle multiple users and multiple programs simultaneously.
These environments are essential for efficient resource utilization and user convenience.
DefinitionMulti-Access EnvironmentAn environment that allows multiple users to interact with a single computer system simultaneously.
DefinitionMulti-Programming EnvironmentAn environment that allows multiple programs to be loaded into memory simultaneously, with the CPU switching between them.
AnalogyThink of a multi-access environment like a library where many people can read different books at the same time, while a multi-programming environment is like a chef preparing multiple dishes simultaneously, switching between them as needed.
