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Advantages of Tree Topology
1. Tree topology is easy to install and reconfigure.
2. A faulty node can be easily detected and isolated from the network.
3. Being a hierarchical network, it is easily scalable.
4. Isolation of a network connected to a secondary hub is easy.
Disadvantages of Tree Topology
1. This topology requires more cabling than bus and ring topology.
2. There is no point to point communication between nodes.
3. If the central hub fails to function, the entire network fails.
1. In which type of network topology failure of any one node brings down the entire network?
2. Which type of topology has Central Node Dependency?
3. Which type of topology exhibits a hierarchical layout?
6.4 Network Types
Networks differ based on their geographical span, communication channels, and purpose. Based on these differentiating
parameters, networks may be classified as follows:
6.4.1 PAN
A Personal Area Network (PAN) is a computer network that links computers and gadgets within a person’s range. PANs
have a short-range, often up to 10 metres (33 feet). For example, a person travelling with a laptop, a personal digital
assistant (PDA), and a portable printer may use a PAN to connect them all. A PAN may be further connected to the
Internet or other networks. Figure 6.10 shows a PAN.
Printer
PDA
Laptop
Desktop PC Smartphone
Figure 6.10 Personal Area Network (PAN)
6.4.2 LAN
A Local Area Network (LAN) is typically owned privately by an organisation. It can span an area of about 1 Km. A LAN is
usually established within a building or campus to facilitate resource sharing amongst its users.
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