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Introduction to OS (Describe the following concept in relation of OS…
Introduction to OS
Basic function of OS:-
-Booting the computer
-Provides user interface
-Handles system resources
-Organize the storage
-Provides file system
-Manage various peripheral devices
Describe the definition of OS -Manage computer hardware -Control computer -Scheduling the tasks -Organize storage -Conduct communication with software
Architecture of OS
Single processor system
-single CPU
-only ONE process can be run at a time
-the other processes must wait until the CPU becomes free
Multiprocessor system
-2 or more CPUs in a system and share common RAM
-divide memory as many partitions as the CPUs
-give each CPU its own private memory and its own private copy of the OS
Clustered system
-allows 2 or more individual systems tied together and share the storage
-closely linked via WLAN networking
-uses multiple CPUs to complete a task
-usually performed to provide high availability
Asymmetric Clustering
-one machine standby but monitors the server
-it becomes active if the server fails
-other machine is running
Symmetric Clustering
-2 or more machines run the applications
-machines monitor each other at the same time
-more efficient
-used only when there is multiple applications are available to run
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2 various product of OS
Open Source
eg.Android, red hat
Closed Source
eg.iOS, windows 7
Identify the different interface of OS -Command line :Linux -Voice Actuated : Apple Mac -Graphical User Interface(GUI) : Menus -Web form :HTML
Component of OS
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File system: a system allows the data to be stored,located and retrieved easily.
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