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COSC 3315 Chap 3

True/False
Indicate whether the statement is true or false.
 

 1. 

The maximum cable length for Category 5, 5e and 6 UTP cables is 200 meters.
 

 2. 

Fiber-optic cable eliminates the possibility of electronic eavesdropping.
 

 3. 

The cable plant is the combination of installed network cables, connectors, patch panels, wall jacks, and other media components.
 

 4. 

The frequency of the wave forms used for communication is measured in cycles per second usually expressed as Watts.
 

 5. 

Spread-spectrum radio addresses several weaknesses of single-frequency communications, whether high or low power.
 

 6. 

The 1997 802.16 Wireless Networking Standard is also referred to as Wireless Fidelity (Wi-Fi).
 

 7. 

Terrestrial microwave systems use tight-beam, high-frequency signals to link sender and receiver.
 

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

 8. 

Each type of cable can transport data only so far before its signal begins to weaken beyond where it can be read accurately; this phenomenon is called ____.
a.
attenuation
c.
insertion loss
b.
bandwidth
d.
latency
 

 9. 

____ transmission uses a digital encoding scheme at a single fixed frequency, where signals take the form of discrete pulses of electricity or light.
a.
Analog
c.
Baseband
b.
Electromagnetic
d.
Broadband
 

 10. 

____ transmission systems use analog techniques to encode binary 1s and 0s across a continuous range of values.
a.
Direct sequence
c.
Baseband
b.
Electromagnetic
d.
Broadband
 

 11. 

Coaxial cable consists of a single conductor at the core, surrounded by an insulating layer, braided metal shielding, and an outer cover (usually called the ____).
a.
braiding
c.
insulation
b.
sheath
d.
conduit
 

 12. 

Shielding works like a form of built-in ____, a type of metal or plastic pipe built specifically to contain cabling.
a.
braiding
c.
insulation
b.
sheath
d.
conduit
 

 13. 

10Base5 refers to ____.
a.
thicknet
c.
Category 5 UTP
b.
thinnet
d.
Category 6 UTP
 

 14. 

____ encloses each pair of wires within a foil shield as well as an enclosing insulating sheath.
a.
TP
c.
STP
b.
UTP
d.
ScTP
 

 15. 

10BaseT refers to ____.
a.
TP
c.
STP
b.
UTP
d.
ScTP
 

 16. 

Category ____ cable is labeled as voicegrade.
a.
1
c.
3
b.
2
d.
4
 

 17. 

Category ____ cable is labeled as datagrade.
a.
1
c.
3
b.
2
d.
4
 

 18. 

Whether STP or UTP, twisted-pair network cabling most commonly uses ____ connectors to plug into computer network interfaces or other networked devices.
a.
BNC
c.
RJ-45
b.
MT-RJ
d.
RJ-11
 

 19. 

____ are special RJ-45-terminated TP cables that permit modular cables to stretch between wall plates and equipment.
a.
Jack couplers
c.
Patch panels
b.
Wall plates
d.
Patch cables
 

 20. 

The bend radius of fiber-optic cable is ____ degrees per foot.
a.
15
c.
45
b.
30
d.
60
 

 21. 

____ is not a fiber-optic connector.
a.
BNC
c.
SC
b.
ST
d.
LC
 

 22. 

____ is not a fiber-optic connector.
a.
MIC
c.
MT-RJ
b.
SMA
d.
RJ-45
 

 23. 

The TIA/EIA developed the document “____ Commercial Building Wiring Standard”, which specifies how network media should be installed to maximize performance and efficiency.
a.
11
c.
568
b.
45
d.
802
 

 24. 

With respect to structured cabling, the ____ is where computer workstations and other user devices are located.
a.
work area
c.
equipment room
b.
telecommunications closet
d.
entrance facility
 

 25. 

With respect to structured cabling, the ____ provides connectivity to computer equipment in the nearby work area.
a.
cable plant
c.
equipment room
b.
telecommunications closet
d.
entrance facility
 

 26. 

With respect to structured cabling, the ____ houses servers, routers, switches, and other major network equipment and serves as a connection point for backbone cabling running between TCs.
a.
work area
c.
equipment room
b.
cable plant
d.
entrance facility
 

 27. 

With respect to structured cabling, a(n) ____ is the location of the cabling and equipment that connects a corporate network to a third-party telecommunications provider.
a.
work area
c.
equipment room
b.
cable plant
d.
entrance facility
 

 28. 

The ____ Worldwide Interoperability for Microwave Access (WiMax) standard, comes in two flavors.
a.
802.3
c.
802.11
b.
802.5
d.
802.16
 

Completion
Complete each statement.
 

 29. 

EMI stands for ______________________________.
 

 

 30. 

Coaxial cable is often called “____________________” for short.
 

 

 31. 

IEEE stands for __________________________________________________.
 

 

 32. 

A(n) ____________________ cable is used to connect a computer’s network interface card to a jack in the work area or to connect from a patch panel to a hub or switch in the wiring closet.
 

 

 33. 

Infrared transmissions are being used increasingly for ____________________ connections that enable portable computing devices to communicate with wired computers or peripheral devices, such as printers.
 

 

 34. 

Direct-sequence modulation breaks data into fixed-size segments called ____________________ and transmits the data on several different frequencies at the same time.
 

 

 35. 

Instead of aiming at transmitters or receivers within a clear line of sight on the ground, satellite microwave systems send and receive data from ____________________ satellites that maintain fixed positions in the sky.
 

 

Matching
 
 
Match each term with the correct statement below.
a.
shielding
f.
twisted-pair
b.
fiber-optic cable
g.
latency
c.
bandwidth
h.
coaxial
d.
insertion loss
i.
repeater
e.
amplifier
 

 36. 

how many bits or bytes of information a cable can carry over a unit of time.
 

 37. 

measures the amount of time a signal takes to travel from one end of the cable to another.
 

 38. 

each physical connection adds to the attenuation of signals on a cable segment.
 

 39. 

receives incoming signals on one cable segment and refreshes them before retransmitting them on another cable segment.
 

 40. 

detects weak signals, strengthens those signals, and then rebroadcasts them.
 

 41. 

was the predominant form of network cabling for many years.
 

 42. 

refers to any protective layers wrapped around a cable to protect it from external interference
 

 43. 

consists of one or more pairs of insulated strands of copper wire twisted around one another.
 

 44. 

trades electrical pulses for their optical equivalents.
 



 
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