The _____ layer of the OSI model makes sure the data received at the very end of

Question

The _____ layer of the OSI model makes sure the data received at the very end of a transmission is exactly the same as the data originally transmitted. a. application b. session c. transport d. network access The _____ layer is the least used layer of the OSI model. a. network b. application c. transport d. session _____ are represented as continuous waveforms that can be at an infinite number of points between some given minimum and maximum. a. Analog signals b. Digital signals c. Digital data d. Digital pulses The three basic components of analog and digital signals are: amplitude, frequency, and _____. a. cycles b. baud c. hertz d. phase The Manchester encoding schemes solve the synchronization problem but are relatively inefficient because they have a baud rate that is _____ the bps. a. equal to b. twice c. three times d. four times When converting analog data to digital signals, the frequency at which the snapshots are taken is called the _____ rate. a. baud b. sampling c. bps d. byte Three important data codes are EBCDIC, _____, and Unicode. a. NRZ-L b. 4B/5B c. ASCII d. NRZI The ASCII character set exists in a few different forms, including a _____ version that allows for 128 possible combinations of textual symbols. a. 3-bit b. 5-bit c. 6-bit d. 7-bit _____ is the designation for a digital telephone circuit that transmits voice or data at 1.544 Mbps. a. ISDN b. T-1 c. VSAT d. T-32 _____ is a form in which a shield is wrapped around each wire individually, around all the wires together, or both. a. Shielded twisted pair (STP) b. Unshielded twisted pair (UTP) c. CAT 2 twisted pair d. CAT 5 twisted pair _____ transmission systems transmit tightly focused beams of radio signals from one ground-based microwave transmission antenna to another. a. Satellite b. Cellular c. Downlink d. Terrestrial microwave

Explanation / Answer

Answers:

1. transport layer (option: c)

2. session layer (option: d)

3. analog signals (option: a)

4. phase (option: d)

5. twice (option: b)

6. sampling (option: b)

7. ASCII (option: c)

8. 7-bit (option: d)

9. T-1 (option: b)

10. shielded twisted pair (STP) (option: a)

11. Terrestrial microwave (option: d)

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