Ch 5: Network Cabling Flashcards
What is the minimum category of UTP cable required in order to support Gigabit speeds?
Cat 5e
What is the maximum supported throughput of a CAT6 cable?
10 Gbps
PoE+ devices are defined by what IEEE standard?
802.3at
Both 10GBase-ER and 10GBase-EW have what maximum distance limitation on a segment of single mode fiber?
40km
Which statement accurately describes what near end crosstalk (NEXT) is?
NEXT is crosstalk that occurs between wire pairs near the source of a signal.
What multiplexing technology lowers cost by spacing frequency bands wider apart to allow for cheaper transceiver equipment?
coarse wavelength division multiplexing
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?
The cable must be a rollover cable.
Noise that can degrade or distort a signal on a network is measured with what unit?
decibels
What statement describes a transmission flaw that is occurring due to attenuation?
A customer modem is continuously losing signal due to large distance from the transmitting device.
Utilizing time slots that are adjusted according to priority and need is an example of what type of multiplexing on copper lines?
statistical time division multiplexing
In a coaxial cabling, what does the RG rating measure?
The materials used for shielding and conducting cores.
You have been awarded a contract for wiring a new federal building. What twisted-pair wiring standard must you use?
TIA/EIA 568A
A Fast Ethernet connection utilizes what pins on an RJ-45 plug?
1, 2, 3, 6
When terminating an Ethernet cable, about how far should the cable sheath extend into the plug?
3/8 inch
What is the fastest Ethernet standard that can possibly be used on twisted-pair cabling?
10GBase-T
Which of the following statements about fiber-optic cabling is accurate?
Light experiences virtually no resistance when traveling through glass.
A typical fiber termination kit should include what tool for cutting a clean slice through fiber strands?
fiber cleaver
What is the industry standard angle for an Angle Polished Connector (APC)?
8 degrees
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)
Which of the following statements correctly describes the SFP+ transceiver?
SFP+ is the same size as SFP, and supports a theoretical maximum transmission speed of 16 Gbps.
The 1000Base-LX utilizes light with what wavelength?
1300 nanometers
What kind of tool can you use to measure voltage on a cable length?
multimeter
Why should you terminate coaxial cable with connectors that are rated for the exact cable type?
A mismatched connector will have different impedance ratings, causing data errors.
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
