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Chapter 3

Chapter 3 Study Guide

Network Fundamentals Chapter 3

Multiple Choice
Identify the choice that best completes the statement or answers the question.

____ 1. The distance between corresponding points on a wave’s cycle is called its ____.
a. amplitude c. phase
b. frequency d. wavelength


____ 2. A digital signal composed of a pulse of positive voltage represents a ____.
a. 0 c. 4
b. 1 d. 8


____ 3. The byte 00001110 means ____ on a digital network.
a. 3 c. 14
b. 6 d. 30


____ 4. In modulation, a simple wave called a ____ wave, is combined with another analog signal to produce a unique signal that gets transmitted from one node to another.
a. carrier c. information
b. data d. FM


____ 5. When signals are free to travel in both directions over a medium simultaneously, the transmission is considered ____.
a. simplex c. half-duplex
b. multiplex d. full-duplex


____ 6. ____ is a technology used with fiber-optic cable, which enables one fiber-optic connection to carry multiple light signals simultaneously.
a. Statistical multiplexing
b. WDM (wavelength division multiplexing)
c. TDM (time division multiplexing)
d. FDM (frequency division multiplexing)


____ 7. The data transmission characteristic most frequently discussed and analyzed by networking professionals is ____.
a. noise c. throughput
b. scalability d. cost


____ 8. One of the most common transmission flaws affecting data signals is ____.
a. noise c. throughput
b. attenuation d. latency


____ 9. The most significant factor in choosing a transmission method is its ____.
a. noise c. throughput
b. attenuation d. latency


____ 10. The more twists per foot in a pair of wires, the more resistant the pair will be to ____.
a. throughput c. cross talk
b. attenuation d. latency


____ 11. Modern LANs use ____ or higher wiring.
a. Cat 3 c. RG-6
b. Cat 5 d. RG-59


____ 12. Serial refers to a style of data transmission in which the pulses that represent bits follow one another along a ____ transmission line.
a. long c. secondary
b. short d. single


____ 13. ____ describes a popular serial data transmission method.
a. EIA/TIA Commercial Building Wiring Standard
b. EIA/TIA RS-232 (Recommended Standard 232)
c. EIA/TIA 568A standard
d. EIA/TIA 568BA standard


____ 14. Which connector is used in RS-232 transmissions?
a. DB-25 c. BNC
b. ST d. Cat-5


____ 15. In a ____ cable, the usual wire positions are exactly reversed in one of the two RJ-45 terminations.
a. crossover c. straight-through
b. cross-through d. rollover


____ 16. Which term describes the hardware that makes up the enterprise-wide cabling system?
a. wiring board c. network diagram
b. patch panel d. cable plant


____ 17. Which standard is also known as structured cabling?
a. TIA/EIA Commercial Building Wiring Standard
b. TIA/EIA RS-232 (Recommended Standard 232)
c. TIA/EIA 568A Standard
d. TIA/EIA 568BA Standard


____ 18. The points where circuits interconnect with other circuits is known as ____.
a. entrance facilities c. IDF (intermediate distribution frame)
b. cross-connect facilities d. telecommunications closet


____ 19. Which term identifies a room containing connectivity for groups of workstations in its area?
a. MDF (main distribution frame) c. work area
b. entrance facilities d. telecommunications closet


____ 20. ____ describes wiring that connects workstations to the closest telecommunications closet.
a. Backbone wiring c. Work area
b. Horizontal wiring d. Simple wiring


____ 21. Many network problems can be traced to poor cable ____ techniques.
a. manufacturing c. installation
b. engineering d. planning


Matching

Match each item with a statement below:
a. bit f. populated segment
b. modulation g. unpopulated segment
c. baseband h. broadband
d. EMI (electromagnetic interference) i. nonbroadcast
e. broadcast


____ 22. Transmission that involves one transmitter and multiple, undefined receivers.

____ 23. Transmission that issues signals to multiple, defined recipients.

____ 24. Transmission form in which (typically) digital signals are sent through direct current (DC) pulses applied to the wire.

____ 25. Part of a network that contains end nodes.

____ 26. A common source of noise.

____ 27. Every pulse in a digital signal.

____ 28. Part of the network that does not contain end nodes.

____ 29. A form of transmission in which signals are modulated as radio frequency (RF) analog waves that use different frequency ranges.

____ 30. Technology used to modify analog signals to make them suitable for carrying data over a communication path.
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