Google Crome overtake apple safari

As we already know During the end of 2009 6-12 Dec. Google Launched his crome web browser for apple Mac OS. It was expected that there will be a rush for the downloading for this. And according to the social Media site Mashable, Apple safari has become the third Most popular web browser. Now in the passed month Chrome had 4.63% of the browser market that month, versus 4.46% for Apple’s Safari.you can easily understand if by graph of last month review.

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Network Topologies (Tutorial-4)

Topology refers to the way in which the network of computers is connected. The choice of topology is dependent upon--- Type and number of equipment being used Planned applications and rate of data transfers Required response times Cost Types of Network Topologies Physical Topology: Physical topology defines how devices are connected to the network through the actual cables that transmit data(physical structure of the network) Logical Topology: Logical Topology (also referred to as Signal Topology) is a network computing term used to describe the arrangement of devices on a network and how they communicate with one another.

Cisco Hierarchical Model

Cisco Hierarchical Model Defined by Cisco to simplify the design, implementation, and maintenance of responsive, scalable, reliable, and cost-effective networks. The 3 layers are logical and not physical – there may be many devices in a single layer, or a single device may perform the functions of 2 layers, eg: core and distribution. The Cisco Hierarchical Model

OSI Model (Tutorial-6)

What is the OSI model ? Open Systems Interconnection model is fundamental to all communications between network devices. Developed in 1974 by ISO after the American Department of Defence began using the TCP/IP suite of protocols. Finally adopted in 1977. It is now the theoretical model for how communication takes place between network devices. What are the seven layers ? Layers OSI Model Layer 7 Layer 6 Layer 5 Layer 4 Layer 3 Layer 2 Layer 1

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