IST-220 Chapter 5 Review
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?
local connector (LC)
What kind of tool can you use to measure voltage on a cable length?
multimeter
When viewing the pinout for T568B, what is the correct order of wire colors, starting at pin 1?
white/orange, orange, white/green, blue, white/blue, green, white/brown, brown
Which transmission characteristic is never fully achieved?
Bandwidth
What is the minimum category of UTP cable required in order to support Gigabit speeds?
Cat 5e
Which of these categories of twisted-pair cable can support Gigabit Ethernet?
Cat 5e, Cat6a, Cat 7
What is the earliest twisted-pair cabling standard that meets the minimum requirements for 10GBase-T transmissions?
Cat 6a
What kind of cable uses BNC connectors?
Coaxial Cable
What statement correctly describes "jitter"?
Jitter is what happens when packets experience varying amounts of delay and arrive out of order.
Which fiber connector contains two strands of fiber in each ferrule?
MTRJ
Which kind of crosstalk occurs between wire pairs near the source of the signal?
NEXT
What statement regarding the Power Over Ethernet standards is inaccurate?
Power over Ethernet requires CAT6 or better copper cable.
Which part of a toner and probe kit emits an audible tone when it detects electrical activity on a wire pair?
Tone locator
Latency on data networks is based on a calculation of a packet's round trip time (RTT). True/False
True
What is the maximum supported throughput of a CAT6 cable?
10 Gbps
What is the fastest Ethernet standard that can possibly be used on twisted-pair cabling?
10GBase-T
When terminating an Ethernet cable, about how far should the cable sheath extend into the plug?
3/8 inch
Which connector is likely to be used by cable TV?
F-connector
A short circuit is one where needed connections are missing, such as when a wire breaks. True/False
False
What type of fiber cable problem is caused when pairing a 50-micron core cable with a 62.5-micron core cable?
Fiber type mismatch
Which kind of multiplexing assigns slots to nodes according to priority and need?
STDM (Statistical Time Division Multiplexing)
You have been awarded a contract for wiring a new federal building. What twisted-pair wiring standard must you use?
TIA/EIA 568A
Multimode fiber contains a core that is larger than a single mode fiber core. True/False
True
Suppose you're creating patch cables to be used in a government office. What color wire goes in the first pin?
White/green
Telephone connections follow what registered jack standard?
registered jack 11 (RJ-11)
Signals that can travel in only one direction on a medium are referred to as what type of signal?
simplex
