ABA 620 FINAL TEST PAPER 2026 EXAM
QUESTIONS AND CORRECT ANSWERS 100%
ACCURATE
⩥ What layer of the OSI model communicates directly with the
transmission media? Answer: Physical (L 1) Layer
⩥ What are two key reasons for building a star network? Answer:
Economic for both installation AND administration
⩥ What is the name of the international organization founded in the
United States comprised of electronic, computer, and communications
engineers responsible for the preparation and dissemination of
telecommunication standards? Answer: IEEE or Institute of Electrical
and Electronics Engineers
⩥ What is the purpose of a full-wave rectifier in electronic devices?
Answer: This converts an AC to DC
⩥ Define connectivity. Answer: A connectivity links an end-user to a
node and from there possibly through other nodes to some final end-user
destination with which the initiating end-user wants to communicate
, ⩥ How would a decrease in temperature (e.g., 0 degrees Kelvin) affect
data throughput in an electronic communications device? Answer:
Increase throughput
⩥ What are the three generic forms of modulation? Answer: 1.
Amplitude
2. Frequency
3. Phase
⩥ Using Shannon's Law, if the spectrum bandwidth is increased, does
the capacity increase or decrease? Answer: Increase
⩥ Name four different transmission media. Answer: 1. Wire pair
2. Coaxial cable
3. Fiber-optic cable
4. Radio Frequency (RF)
⩥ What is the primary reason for reduced throughput of data on twisted
pair cabling? Answer: Delay distortion caused by capacitance.
⩥ Define transmission medium. Provide two different examples of a
transmission medium. Answer: The transmission medium carries the
encoded signals from the transmitter to the receiver. Wire (copper), air
(RF), and fiber (optics) are examples
QUESTIONS AND CORRECT ANSWERS 100%
ACCURATE
⩥ What layer of the OSI model communicates directly with the
transmission media? Answer: Physical (L 1) Layer
⩥ What are two key reasons for building a star network? Answer:
Economic for both installation AND administration
⩥ What is the name of the international organization founded in the
United States comprised of electronic, computer, and communications
engineers responsible for the preparation and dissemination of
telecommunication standards? Answer: IEEE or Institute of Electrical
and Electronics Engineers
⩥ What is the purpose of a full-wave rectifier in electronic devices?
Answer: This converts an AC to DC
⩥ Define connectivity. Answer: A connectivity links an end-user to a
node and from there possibly through other nodes to some final end-user
destination with which the initiating end-user wants to communicate
, ⩥ How would a decrease in temperature (e.g., 0 degrees Kelvin) affect
data throughput in an electronic communications device? Answer:
Increase throughput
⩥ What are the three generic forms of modulation? Answer: 1.
Amplitude
2. Frequency
3. Phase
⩥ Using Shannon's Law, if the spectrum bandwidth is increased, does
the capacity increase or decrease? Answer: Increase
⩥ Name four different transmission media. Answer: 1. Wire pair
2. Coaxial cable
3. Fiber-optic cable
4. Radio Frequency (RF)
⩥ What is the primary reason for reduced throughput of data on twisted
pair cabling? Answer: Delay distortion caused by capacitance.
⩥ Define transmission medium. Provide two different examples of a
transmission medium. Answer: The transmission medium carries the
encoded signals from the transmitter to the receiver. Wire (copper), air
(RF), and fiber (optics) are examples
