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Craig W Macey NT 1210 Intro to Networking Unit 4 Assignment 1: Physical Layer Network Concepts 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? b. The battery's positive lead pulls current toward the lead. c. The circuit creates a direct current. 2. 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? a. The period is 1/1000 of a second. c. The amplitude changes over time. 3. 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? b. Senses current on the circuit. d. Removes noise from the circuit. 4. A PC NIC and a switch port create one electrical circuit to use when sending data from the PC to the switch. The transmitter uses a simple encoding scheme that uses a 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?... View Full Document

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