ABSTRACT

Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Exercises . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Part A Questions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Part B Questions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Part A Answers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Computer networks can be broadly classified as wired and wireless networks. Wireless networks can be further classified into single-hop and multi-hop wireless networks. Single-hop wireless networks can be infrastructure based (e.g., cellular networks) or infrastructure-less (e.g., Bluetooth). Multi-hop wireless networks can also be infrastructure based (e.g. Wireless Mesh Networks WMNs) or infrastructure-less (e.g., mobile ad hoc networks (MANETs), or wireless sensor networks (WSNs)). Infrastructure-based networks have a fixed infrastructure of network elements such as routers, gateways, access points and base stations. Infrastructure-less networks do not have any fixed

FIGURE 1.1 General Classification of Computer Networks; Ex=Example.