Network Topology Pdf Download
Network Layer (Cont.) • IP is a standard that defines the manner in which the network layers of two hosts interact. IP addresses are 32 bit long, hierarchical addressing scheme. 3 Network IP Address Logical Address= 192.168.6.17. Data Communication and Computer Network 6 WAN may use advanced technologies such as Asynchronous Transfer Mode (ATM), Frame Relay, and Synchronous Optical Network (SONET). WAN may be managed by multiple administration. Internetwork A network of networks is called an internetwork, or simply the internet.
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What is Network Topology The physical topology of a network refers to the configuration of cables, computers, and other peripherals. Physical topology should not be confused with logical topology which is the method used to pass information between workstations.
Logical topology was discussed in the Protocol chapter. Main Types of Network Topologies In networking, the term 'topology' refers to the layout of connected devices on a network. This article introduces the standard topologies of computer networking. One can think of a topology as a network's virtual shape or structure. This shape does not necessarily correspond to the actual physical layout of the devices on the network. For example, the computers on a home LAN may be arranged in a circle in a family room, but it would be highly unlikely to find an actual ring topology there.
Network topologies are categorized into the following basic types: • Star Topology • Ring Topology • Bus Topology • Tree Topology • Mesh Topology • Hybrid Topology More complex networks can be built as hybrids of two or more of the above basic topologies. Star Topology Many home networks use the star topology. A star network features a central connection point called a 'hub' that may be a hub, switch or router.
Devices typically connect to the hub with Unshielded Twisted Pair (UTP) Ethernet. Compared to the bus topology, a star network generally requires more cable, but a failure in any star network cable will only take down one computer's network access and not the entire LAN. (If the hub fails, however, the entire network also fails.) See the illustration of Star Network Topology.
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Advantages of a Star Topology • Easy to install and wire. • No disruptions to the network then connecting or removing devices. • Easy to detect faults and to remove parts.
Disadvantages of a Star Topology • Requires more cable length than a linear topology. • If the hub or concentrator fails, nodes attached are disabled.
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Network Topology Ppt
Types Of Network Topology Pdf Download
• More expensive than linear bus topologies because of the cost of the concentrators. The protocols used with star configurations are usually Ethernet or LocalTalk. Token Ring uses a similar topology, called the star-wired ring. Star-Wired Ring A star-wired ring topology may appear (externally) to be the same as a star topology. Internally, the MAU of a star-wired ring contains wiring that allows information to pass from one device to another in a circle or ring (See fig.