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1. A serial cable with an RJ-45 connector is capable of being used through an RJ-45 Ethernet port.
a.
True
b.
False
2. Multimode fiber contains a core that is larger than a single mode fiber core.
a.
True
b.
False
3. A continuity tester should not be used on a live network segment.
a.
True
b.
False
4. In order to achieve 1000Base-T over CAT5e cable, 2 pairs of copper are needed.
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a.
True
b.
False
5. The ST and SC fiber connectors are the most commonly found connectors due to their smaller sizes.
a.
True
b.
False
6. A time domain reflectometer sends a signal and analyzes the return signal’s change in amplitude to determine
where cable imperfections may exist.
a.
True
b.
False
7. Latency on data networks is based on a calculation of a packet’s round trip time (RTT).
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a.
True
b.
False
8. RG-59 is more expensive than RG-6, but has better resistance to attenuation.
a.
True
b.
False
9. A short circuit is one where needed connections are missing, such as when a wire breaks.
a.
True
b.
False
10. A wavelength mismatch occurs when transmissions are optimized for one type of cable but sent over a
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different type of cable.
a.
True
b.
False
11. What is the minimum category of UTP cable required in order to support Gigabit speeds?
a.
Cat 3
b.
Cat 5
c.
Cat 5e
d.
Cat 6
12. What is the maximum supported throughput of a CAT6 cable?
a.
100 Mbps
b.
1 Gbps
c.
10 Gbps
d.
100 Gbps
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13. PoE+ devices are defined by what IEEE standard?
a.
802.3at
b.
802.3af
c.
802.3fc
d.
802.3c
14. Both 10GBase-ER and 10GBase-EW have what maximum distance limitation on a segment of single mode
fiber?
a.
550m
b.
300m
c.
10km
d.
40km
15. Which statement accurately describes what near end crosstalk (NEXT) is?
a.
NEXT is crosstalk that occurs between wire pairs near the source of a signal.
b.
NEXT is crosstalk that occurs near the opposite end of a signal source.
c.
NEXT is crosstalk that occurs when an EMI source is near the data signal source.
d.
NEXT is crosstalk that occurs only when a cable segment exceeds the bend radius.
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16. What multiplexing technology lowers cost by spacing frequency bands wider apart to allow for cheaper
transceiver equipment?
a.
statistical time division multiplexing
b.
dense wavelength division multiplexing
c.
coarse wavelength division multiplexing
d.
spaced wavelength division multiplexing
17. A junior administrator is having issues connecting to a router’s console port using a TIA/EIA 568B standard
cable and a USB serial to RJ-45 adapter, despite verifying terminal settings. What is the issue?
a.
Router console ports are only used when connected to other routers.
b.
The router console port is providing an Ethernet connection, instead of a serial connection.
c.
The USB standard is incompatible with the serial connection used by the console port.
d.
The cable must be a rollover cable.
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18. Noise that can degrade or distort a signal on a network is measured with what unit?
a.
joules
b.
volts
c.
decibels
d.
farads
19. What statement describes a transmission flaw that is occurring due to attenuation?
a.
A customer modem is continuously losing signal due to large distance from the transmitting device.
b.
A network switch interface is dropping due to a powerful radio transmitter in the adjacent room.
c.
A customer’s video conferencing application is experiencing delay in audio and video that comes and
goes.
d.
Two network interfaces are experiencing problems at the same time due to the cables having adjacent
runs.
20. Utilizing time slots that are adjusted according to priority and need is an example of what type of
multiplexing on copper lines?
a.
time division multiplexing
b.
statistical time division multiplexing
c.
frequency division multiplexing
d.
wavelength division multiplexing
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21. In a coaxial cabling, what does the RG rating measure?
a.
The number of twists in the copper core.
b.
The overall thickness of the cable.
c.
The maximum distance the cable is rated for, in kilometers.
d.
The materials used for shielding and conducting cores.
22. You have been awarded a contract for wiring a new federal building. What twisted-pair wiring standard
must you use?
a.
TIA/EIA 568A
b.
TIA/EIA 568B
c.
TIA/EIA 568F
d.
TIA/EIA rollover
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23. A Fast Ethernet connection utilizes what pins on an RJ-45 plug?
a.
1, 2, 4, 5
b.
1, 2, 3, 5
c.
1, 2, 3, 6
d.
1, 2, 7, 8
24. When terminating an Ethernet cable, about how far should the cable sheath extend into the plug?
a.
1/2 inch
b.
3/8 inch
c.
4/5 inch
d.
1/5 inch
25. What is the fastest Ethernet standard that can possibly be used on twisted-pair cabling?
a.
100Base-T
b.
1000Base-T
c.
10GBase-T
d.
10TBase-T
26. Which of the following statements about fiber-optic cabling is accurate?
a.
Fiber-optic cabling has a low resistance to signal noise.
b.
Light experiences virtually no resistance when traveling through glass.
c.
Fiber-optic cable is cheaper than shielded twisted pair cabling.
d.
The maximum length for a fiber segment is 20km.
27. A typical fiber termination kit should include what tool for cutting a clean slice through fiber strands?
a.
fiber stripper
b.
fiber snipper
c.
fiber cleaver
d.
fiber saw
28. What is the industry standard angle for an Angle Polished Connector (APC)?
a.
8 degrees
b.
12 degrees
c.
14 degrees
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d.
16 degrees
29. You’ve been handed a fiber with a 1.25-mm ferrule that requires a connector. What is the most commonly
used connector for this ferrule size?
a.
subscriber connector (SC)
b.
straight tip (ST)
c.
Mechanical Transfer-Registered Jack (MTRJ)
d.
local connector (LC)
30. Which of the following statements correctly describes the SFP+ transceiver?
a.
SFP+ provides the same function as GBICs and is more compact. It is theoretically capable of 5
Gbps.
b.
SFP+ supports up to 10 Gbps and is slightly larger than SFP, with lower power consumption than
XFP.
c.
SFP+ is the same size as SFP, and supports a theoretical maximum transmission speed of 16 Gbps.
d.
SFP+ complies with the 802.3ba standard, allowing four channels in a single transceiver and
supporting up to 40 Gbps data rates.
31. The 1000Base-LX utilizes light with what wavelength?
a.
850 nanometers
b.
1200 nanometers
c.
1300 nanometers
d.
1550 nanometers
32. What kind of tool can you use to measure voltage on a cable length?
a.
continuity tester
b.
multimeter
c.
time domain reflectometer
d.
light meter
33. Why should you terminate coaxial cable with connectors that are rated for the exact cable type?
a.
A mismatched connector will have different impedance ratings, causing data errors.
b.
A mismatched connector will not fit the coaxial cable for termination.
c.
A mismatched connector will work fine, but breaks cabling standards.
d.
A mismatched connector will destroy the equipment it is connected to.
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34. When viewing the pinout for T568B, what is the correct order of wire colors, starting at pin 1?
a.
white/green, green, white/orange, blue, white/blue, orange, white/brown, brown
b.
blue, white/blue, green, white/green, orange, white/orange, brown, white/brown
c.
white/orange, orange, white/green, blue, white/blue, green, white/brown, brown
d.
white/brown, brown, white/green, blue, white/blue, green, orange, white/orange
35. Telephone connections follow what registered jack standard?
a.
registered jack 11 (RJ-11)
b.
registered jack 12 (RJ-12)
c.
registered jack 45 (RJ-45)
d.
registered jack 100 (RJ-100)
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36. What statement regarding the Power Over Ethernet standards is inaccurate?
a.
The amount of power provided is 15.4 watts for standard PoE devices.
b.
Power over Ethernet requires CAT6 or better copper cable.
c.
Electric current may run over a pair of wires used for data transmission.
d.
A device that supplies power for PoE is known as power sourcing equipment.
37. Bidirectional transceivers utilize what technology to separate the data in each direction?
a.
wavelength division multiplexing
b.
time division multiplexing
c.
frequency division multiplexing
d.
statistical time division multiplexing
38. Signals that can travel in only one direction on a medium are referred to as what type of signal?
a.
full-duplex
b.
duplex
c.
half-duplex
d.
simplex
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39. What statement correctly describes “jitter”?
a.
Jitter is what happens when packets experience varying amounts of delay and arrive out of order.
b.
Jitter is the loss of 50% or more packets in a given data stream, causing a connection to falter.
c.
Jitter is the fluctuation of a signal’s strength as it travels away from its source.
d.
Jitter is the transmission of signal onto unintended pairs in a copper cable.
40. Broadband cable Internet service and cable TV are most commonly delivered over long distances via what
type of cable?
a.
RG-59
b.
RG-6
c.
RG-20
d.
LRG-50
41. How does a time domain reflectometer (TDR) work?
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42. What is the difference between bandwidth and throughput?
43. Noise can degrade or distort a signal on a network; what are some of its causes?
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44. What is the biggest limiting factor on fiber-optic cable length?
45. How does modal bandwidth affect the performance of a multimode fiber segment?
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46. When tracing a wire, how do you utilize a toner and probe kit?
47. What is the difference between single mode fiber and multimode fiber, and how do they compare?
48. What is a fiber distribution panel, and how is it used?
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49. Describe the two different shapes and polishes currently used on SMF ferrules to reduce back reflection.
50. What are the different transceiver types that have made the GBIC obsolete?
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