Physical Stack Layer Flashcards
1
Q
What does the physical layer transmit?
A
Bits
2
Q
What is a bit?
A
The smalles representation of data that a computer can understand: A one or a zero.
3
Q
What is modulation?
A
A way of varying the voltage of charge moving across the cables
4
Q
What is Line Coding?
A
Another name for modulation
5
Q
What is duplex communication?
A
The concept that information can flow in both directions across the cable.
6
Q
What is simplex communication?
A
Unidirectional communication across the wire.
7
Q
What is Full-duplex communication?
A
Where two endpoints can transmit data to each other simultaniously
8
Q
What is half-duplex communication?
A
Where two endpoints can transmit data to each other but they have to take turns
9
Q
A
