Unit 4 Assignment 1
You have created a simple electrical circuit with a battery, wires, and a light bulb. Which
of the following is true about this circuit?
The battery’s positive lead pulls current toward that lead.
– The circuit creates a direct current.
A PC NIC and a switch port create one electrical circuit to use when sending data. The
sender creates a (maximum) 1-volt electrical signal with a frequency of 1000 hertz.
Which of the following facts are also true?
The period is 1/1000 of a second
– The phase changes over time
A PC NIC and a switch port create one electrical circuit to use when sending data from
the PC to the switch. Which of the following tasks is a function done by the transmitter?
– Completes the electrical circuit by looping two wires together on its end
– Creates current on the circuit
A PC NIC and a switch port create one electrical to use when sending data from the PC to
the switch. The transmitter uses a simple encoding scheme that uses higher amplitude to
encode 1 and a lower amplitude to encode 0, sending 1 bit in each bit time. The bit rate is
2000 bits per second (2000 bps). Which of the following is true on this circuit?
– The transmitter can change the amplitude 2000 times per second.
Two nodes use an encoding scheme that cannot use one circuit to both send and receive
data at the same time. The link physically contains two wires. Which of the following is a
possible option to allow both nodes to send data?
– Create one circuit, and take turns sending over that circuit
UTP cables can have up to eight wires inside the cables. Which of the following is the
most likely reason why EMI from one wire does not affect the electrical behavior of