WTN1200 - Communications Technology Flashcards
Simplex communication involves data flow in only one direction (true or false)
True
In half duplex mode, each node can transmit and receive at the same time. (True or False)
False
The transmission mode whereby when one device is sending, the other can only receive, and vice versa is called ________
Half duplex mode
The transmission mode whereby data can flow in both directions at the same time is called:
Full duplex mode
MDI NICs transmit and receive signals over which pairs?
receive over pair 2 and transmit over pair 3
In which circumstances can a straight through cable be used?
Connecting a computer to a switch, connecting a switch to a router
In which circumstances is a cross-over cable required?
connecting a computer to a computer and connecting a switch to a switch
What type of signal is required to carry data?
A carrier signal
What is a carrier signal?
a modulated signal that is used to transmit binary data.
Which wave properties can be modulated to encode data?
Phase, Amplitude and frequency
ASK
amplitude shift keying
fsk
frequency shift keying
PSK
phase shift keying
Which modulation method is most susceptible to noise intereference?
Amplitude modulation
