Director Essay

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itt technical institute | Unit 4 – Assignment 1 | IT220 – Physical Layer Network Concepts | | | 11/19/2013 | We were to complete all of the tasks assigned with regard to chapter 4. We were to answer the question the end of the chapter and define the terms. This was completed by type the full questions and providing the answers. | 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? (Choose two answers.) a. The battery’s positive lead pushes current away from that lead, and 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? (Choose two answers.) b. The phase changes over time. 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? (Choose tow answers.) a. Completes the electrical circuit by looping two wires tighter on its end. And C. Create current on 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? B. The bit time is .0002 seconds. C. The transmitter must change the amplitude 2000 times per second. 5. Two nodes use an encoding scheme that cannot use one circuit to both send and receive

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