Structure of a Clustered System

Ricky Barnes
Published on 24-Aug-2018 13:18:39
Clustered systems are similar to parallel systems as they both have multiple CPUs. However a major difference is that clustered systems are created by two or more individual computer systems merged together. Basically, they have independent computer systems with a common storage and the systems work together.Clustered System StructureThe structure ... Read More

Clustered Systems

Kristi Castro
Published on 24-Aug-2018 02:15:46
Clustered systems are similar to parallel systems as they both have multiple CPUs. However a major difference is that clustered systems are created by two or more individual computer systems merged together. Basically, they have independent computer systems with a common storage and the systems work together. A diagram to ... Read More

What is Bitmap?

Alex Onsman
Published on 24-Aug-2018 01:51:37
A bitmap is a mapping from one system such as integers to bits. It is also known as bitmap index or a bit array.The memory is divided into units for bitmap. These units may range from a few bytes to several kilobytes. Each memory unit is associated with a bit ... Read More

Operating System Operations

David Meador
Published on 24-Aug-2018 01:39:47
An operating system is a construct that allows the user application programs to interact with the system hardware. Operating system by itself does not provide any function but it provides an atmosphere in which different applications and programs can do useful work. The major operations of the operating system are ... Read More

I/O Systems and Subsystems

Ricky Barnes
Published on 24-Aug-2018 01:29:53
I/O devices are very important in the computer systems.They provide users the means of interacting with the system. So there is a separate I/O system devoted to handling the I/O devices. The different Components of the I/O systems are: I/O Hardware There are many I/O devices handled by the ... Read More

Protection and Security in Operating System

Kristi Castro
Published on 24-Aug-2018 01:13:33
Protection and security requires that computer resources such as CPU, softwares, memory etc. are protected. This extends to the operating system as well as the data in the system. This can be done by ensuring integrity, confidentiality and availability in the operating system. The system must be protect against unauthorized ... Read More

Types of Computing Environments

Alex Onsman
Published on 24-Aug-2018 00:57:48
A computer system uses many devices, arranged in different ways to solve many problems. This constitutes a computing environment where many computers are used to process and exchange information to handle multiple issues. The different types of Computing Environments are: Let us begin with Personal Computing Environment: Personal Computing ... Read More

Kernel Data Structures

Ricky Barnes
Published on 24-Aug-2018 00:49:18
The kernel data structures are very important as they store data about the current state of the system. For example, if a new process is created in the system, a kernel data structure is created that contains the details about the process. Most of the kernel data structures are ... Read More

Communication Satellites

Arjun Thakur
Published on 23-Aug-2018 11:51:27
A communication satellite is an artificial satellite that acts as a large repeater in the sky. It receives signals from the source transmitter, amplifies using transponders, and relays them to the receiver. Thus, it creates a communication channel between locations of the earth that would not have been able to ... Read More

Light Transmission

George John
Published on 23-Aug-2018 11:48:07
Electromagnetic waves within the frequency range of 400 THz – 790 THz are detected by the human eye. Light transmission is line of sight propagation and is blocked by obstacles. Laser Signals Optical signalling can be obtained by laser signals. For example, the LANs in two buildings can be connected ... Read More
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