Types of Operating System (OCR A-Level Computer Science): Flashcards
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13 cards from this deck
Distributed OS definition
Distributed OS definition
Network of separate computers working together as one system
Distributed OS: fault tolerance benefit
Distributed OS: fault tolerance benefit
If one computer fails, others continue the task
Distributed OS use case examples
Distributed OS use case examples
Cloud computing & data processing centres
Embedded OS definition
Embedded OS definition
Operates specific devices w/ limited resources efficiently
Embedded OS: small footprint meaning
Embedded OS: small footprint meaning
Requires low memory & processing power
Embedded OS use case examples
Embedded OS use case examples
Appliances, automobiles, medical devices, IoT devices
Multi-tasking OS definition
Multi-tasking OS definition
Allows multiple apps to run simultaneously for one user
Multi-tasking OS: time-sharing feature
Multi-tasking OS: time-sharing feature
Divides CPU time among tasks for concurrent execution
Multi-user OS definition
Multi-user OS definition
Multiple users access single system simultaneously
Multi-user OS: user accounts feature
Multi-user OS: user accounts feature
Separate environments w/ unique access permissions per user
Real-time OS (RTOS) definition
Real-time OS (RTOS) definition
Processes data & responds instantly within guaranteed time
Hard RTOS vs Soft RTOS
Hard RTOS vs Soft RTOS
Hard: strict timing (critical). Soft: minor flexibility OK
Multi-tasking vs Multi-user OS difference
Multi-tasking vs Multi-user OS difference
Multi-tasking: 1 user, many apps. Multi-user: many users