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Friday, 28 October 2016
Tuesday, 27 September 2016
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What is Hybrid Topology?
The hybrid topology is a type of network topology that is composed of one or more interconnections of two or more networks that are based upon different physical topologies
Note
A Star ring network consists of two or more star topologies connected using a multistation access unit (MAU) as a centralized hub.
A Star Bus network consists of two or more star topologies connected using a bus trunk (the bus trunk serves as the...
What is Tree Topology?
Nodes in a tree are linked to a central hub that controls the traffic to the network. However not
every devices plugs directly into the central hub. The majority of devices connect to a secondary hub that in turn is connected to the central hub. The control hub in the tree is an active hub. An active hub
contains a repeater which is a hardware device that regenerates the received but patterns before sending them out. Repeating strengthens transmission...
What is Mesh Topology?
Topology in which each of the nodes of the network is connected to each of the other nodes in the network with a point-to-point link – this makes it possible for data to be simultaneously transmitted from any single node to all of the other nodes.
The physical fully connected mesh topology is generally too costly and complex for practical networks, although the topology is used when there are only a small number of nodes to be interconnected
•...
What is Ring Topology?
Topology in which each of the nodes of the network is connected to two other nodes in the network and with the first and last nodes being connected to each other, forming a ring
All data that is transmitted between nodes in the network travels from one node to the next node in a circular manner and the data generally flows in a single direction only.
Advantages:
• Easy to install and wire.
• Because every computer is given equal...
What is Star Topology?
Topology in which each of the nodes of the network is connected to a central node with a point-to-point link in a "hub” or “Switch”
All data that is transmitted between nodes in the network is transmitted to this central node
• Advantages:
It is easy to modify and add new computers to a star network without disturbing the rest of the network.
If one node or workstation (beside the middle node) goes down, the rest of...
What is Bus Topology?
In this type of network topology, all the nodes of a network are connected to a common transmission medium having two endpoints. All the data that travels over the network is transmitted through a common transmission medium known as the bus or the backbone of the network.
When the transmission medium has exactly two endpoints, the network topology is known by the name, 'linear bus topology'. In case the transmission medium, also called the...
What is Network Topology?
• A network topology describes the configuration of a network and the physical and logical arrangement of the nodes that form the network. There are two ways of defining network geometry: the physical topology and the logical (or signal) topology.
Physical topology is the physical layout of the network, how the cables are arranged and how the computers are connected.
Logical topology refers to the nature of the paths the signals follow from node to node....
Friday, 23 September 2016
Windows Server 2012 – An Overview
Greater flexibility and agility with Windows Server 2012 R2
At the heart of the Microsoft Cloud OS vision, Windows Server 2012 R2 brings Microsoft’s experience delivering global-scale cloud services into your infrastructure with new features and enhancements in virtualization, management, storage, networking, virtual desktop infrastructure, access and information protection, the web and application platform, and more.
windows Server 2012, codenamed "Windows Server 8" is the sixth release of Windows Server. It is the server version of Windows...
Services of server 2012
IP address management (IPAM)
Windows Server 2012 has an IP address management role for discovering, monitoring, auditing, and managing the IP address space used on a corporate network. The IPAM is used for the management and monitoring of Domain Name System (DNS) and Dynamic Host Configuration Protocol (DHCP) servers. Both IPv4 and IPv6 are fully supported.
Active Directory
Windows Server 2012 has a number of changes to Active Directory from the version shipped with Windows Server 2008 R2. The Active Directory Domain Services installation...
Types of Computer Networks
A personal area network (PAN):
A personal area network (PAN) is a computer network used for data transmission among devices such
as computers,telephones and personal digital assistants. PANs can be used for communication among the personal devices themselves (intrapersonal communication), or for connecting to a higher level
network and the Internet.
• Local Area Network (LAN):
A local area network is a computer network that interconnects computers...
Saturday, 17 September 2016
Features of windows server 2012
Installation options
Unlike its predecessor, Windows Server 2012 can switch between "Server Core" and "Server with a GUI" installation options without a full reinstallation. Server Core - an option with a command-line interface only - is now the recommended configuration. There is also a third installation option that allows some GUI elements such as MMC and Server Manager to run, but without the normal desktop, shell or default programs like File Explorer.
User interface
Server Manager has been redesigned with an emphasis on easing...
Advanced Research Projects Agency Network (ARPANET)
ARPANET
Promoted to the head of the information processing office at ARPA,
Robert Taylor intended to realize Licklider's ideas of an interconnected
networking system. Bringing in Larry Roberts from MIT, he initiated a
project to build such a network. The first ARPANET link was
established between the University of California, Los Angeles and the
Stanford Research Institute on 21 November 1969. By 5 December
1969, a 4-node network was connected by adding the
University of Utah and the University of California, Santa Barbara.
Building...
Computer network
• History
• In the 1960s, the Advanced Research Projects Agency (ARPA)
started funding the design of the Advanced Research Projects
Agency Network (ARPANET) for the United States Department
of Defense. Development of the network began in 1969, based on
designs developed during the 1960s. The ARPANET evolved into
the modern Interne...
Saturday, 10 September 2016
About Windows server 2012
Windows Server 2012, codenamed "Windows Server 8" is the sixth release of Windows Server. It is the server version of Windows 8 and succeeds Windows Server 2008 R2. Two pre-release versions, a developer preview and a beta version, were released during development. The software was generally available to customers starting on September 4, 2012.
Unlike its predecessor, Windows Server 2012 has no support for Itanium-based computers and has four...
Thursday, 1 September 2016
Wednesday, 31 August 2016
About RED HAT 6
Linux Operating system
•It is a system software which provides
an interface between user, hardware, peripherals devices and application
program. Every os consists
of two components
•Kernel
•shell
Kernel
•It is core of an operating system, it
is an interpreter between user and hardware. In Dos – 10.sys, msdos.sys, in xp –
NTUSKRMI32.com,...
