Data communication and network Chapter - 2Zafar Ayub
The document discusses network protocols and Ethernet. It provides details on:
- Common network protocols include Ethernet, LocalTalk, Token Ring, FDDI, and ATM. Ethernet is the most widely used protocol.
- Ethernet uses CSMA/CD access method where nodes listen before transmitting and can detect collisions. It operates at speeds of 10 Mbps, 100 Mbps, 1 Gbps, and 10 Gbps.
- Ethernet standards include IEEE 802.3 for 10BASE-T, 802.3u for 100BASE-TX, 802.3z for 1000BASE-T, and 802.3ae for 10 Gbps.
Data communication and network Chapter -1Zafar Ayub
This document discusses data communication and networks. It defines data communication as the electronic transmission of digitally encoded information between networks via a medium. A network is defined as hardware, software, and protocols that allow sharing of resources and information according to set rules. The document also defines several key terms related to data communication and networks such as data, resources, channels, protocols, encryption, network hardware and software, senders, and receivers. It describes methods of data transmission including serial and parallel transmission.