3.1-3.2 - Circuits and Communication Media Flashcards
A ___________ is a discrete (specific) path between two or more points along which signals can be carried
circuit
Circuit configuration is the basic physical layout of the circuit
- Point-to-point
- Multipoint
Sometimes called dedicated circuits; one computer to another
Point-to-point Circuit
Used when the computers generate enough data to fill the capacity of the communication circuit
Point-to-point Circuit
Also called shared circuit; many computers are connected to the same circuit
Multipoint Circuit
Typically used when each PC does not need to continuously use the entire capacity of the circuit
Multipoint Circuit
Data flow in circuits are also known as _______________
transmission nodes
A one-way transmission, such that radios or tv sets
Simplex Transmission
Devices in this transmission mode can only take one of two device roles:
- A transmitter (sender)
- A receiver
A two-way transmission, but you can transmit in only one direction at a time — similar to a walkie-talkie
Half-duplex Transmission
Computers use _______________ to negotiate that they will send and receive data
control signals
The amount of time half-duplex communication takes to switch between sending and receiving is called _______________ (or retrain time, relocking time)
turnaround time
You can transit in both direction simultaneously
Full-duplex Transmission
Devices in this mode of transmission are capable of transmitting and receiving data, thus, they are sometimes referred to as _______________
transceivers
To break one high-speed physical communication circuit into several lower-speed logical circuits; often done in multiples of 4
Multiplexing
