BCA Semester 5 – Computer Networking – Unit 2: The Physical Layer (6Hrs)

1. Transmission Impairment Definition: Transmission impairment refers to any distortion or degradation in a signal as it travels through a communication channel, which can affect the quality and acc

1. Multiple Access Taxonomy Definition: Multiple Access protocols define how multiple devices share a common communication channel without interference. Categories: 1. Random Access Protocols

1. Transmission Impairment Definition: Transmission impairment refers to any distortion or degradation of the signal as it travels from the sender to the receiver, causing errors or loss of data.

1. Pure ALOHA Definition: Pure ALOHA is a random-access protocol where a station transmits data whenever it has data to send. - Collisions may occur if two or more stations transmit simultaneously

a) Fragmentation Definition: Fragmentation is the process of breaking a large data packet into smaller pieces (fragments) so that they can pass through a network with a smaller Maximum Transmission

1. Transmission Media Definition: Transmission media refers to the physical pathway through which data signals travel from the sender to the receiver in a network. - Determines the speed, distance