Systems Architecture - Data and Network Communication Technology

A collection of flashcards summarizing key terms and concepts from the lecture on Data and Network Communication Technology.

Communication Protocol

A set of rules and conventions governing message transmission and reception.

Data Message

A unit of data transmitted from sender to one or more recipients.

Control Message

A message that controls some aspect of the communication process, such as start/stop or error detection.

Amplitude Modulation (AM)

A technique that represents bit values as amplitude (power) levels in a carrier wave.

Frequency Modulation (FM)

A technique that represents bit values as frequency changes in a carrier wave.

Phase-Shift Modulation

A technique that represents bit values through instantaneous changes in the phase of a carrier wave.

Digital Signal

A signal that can contain one of a finite number of values in each signal event.

Analog Signal

A signal that uses all possible values of a wave characteristic as different numeric values.

Bandwidth

The difference between the maximum and minimum frequencies that a transmission medium can carry.

Signal-to-Noise Ratio (S/N Ratio)

The difference between signal power and noise power, crucial for determining transmission integrity.

Error Detection Methods

Techniques to identify errors in data transmission to ensure data integrity.

Synchronous Transmission

Transmission method ensuring clocks of sender and receiver stay synchronized.

Asynchronous Transmission

Transmission method where packets or messages are sent as they arrive, with ‘silence’ periods.

Multiplexing

The process of transmitting multiple messages through a single communication channel.

Twisted Pair Cable

A type of electrical cabling commonly used for networking, which helps to cancel noise.

Coaxial Cable

A type of electrical cable with a central conductor and insulating layer, used for cable television.

Fiber Optic Cable

A cable that transmits data as light through fibers, offering high bandwidth over long distances.