Domain 1.3 Flashcards
Describe Twisted Copper Pair Cabling
Two cables are wrapped with one another. They both carry opposite charges.
Pairs in the cables have different twist rates.
Describe the two types of CoAx Cables and what they use as a connector
A single wire conductor is shrouded by a dielectric insulator, metal shielding, and a plastic jacket.
Two major types -
RG-6 - Used in TV/Digital cable and high speed internet over cable
RG-59 - Used as patch cables and is not designed for long distances.
These cables can be terminated with F-Type connectors for common installations in homes and whatnot.
Describe TwinAX cables
Two wire conductors (Twins)
Common on 10 Gigabit Ethernet SFP+ Cables.
Full duplex, five meters, low cost and low latency compared to twisted pair
What are the two ANSI/TIA wiring standards for Ethernet cables making use of twisted pair?
ANSI/TIA 568A and 568B
In which order would you terminate the cables of a Twisted pair into an RJ-45 connector for a TIA 568b cable
White Orange
Orange
White Green
Blue
White blue
green
White brown
brown
In which order would you terminate the cables of a Twisted pair into an RJ-45 connector for a TIA 568a cable
White green
Green
White Orange
Blue
White blue
Orange
White brown
brown
Describe the Cable Category and Maximum distance of 100BASE-T cable
Copper twisted pair -
Category - 5
Max Distance 100 Meters
Describe the Cable Category and Maximum distance of 1000BASE-TX
Fast Ethernet
Cat 5e (Enhanced)
100 meters
Describe the Cable Category and Maximum distance of 10GBASE-T cable
Cat 6 -
Unshielded 55 meters
Shielded 100 meters
Cat6A -
100 meters
Cat 7 - Shielded only
100 meters
Describe the Cable Category and Maximum distance of 40GBASE-T cable
Cat 8 - shielded only
30 meters
Describe UPC Versus APC fiber connectors
UPC - Ultrapolished connector -
Uses no angle to connect two cables together.
High return loss
APC - Angle-polished Connector
Uses an 8 degree angle
Lower return loss, BUT generally higher
insertion loss than UPC
Describe a media converter
layer one device that takes one form of signal or transmission media and converts it to a different form of signal or media.
They can also be used to extend copper wiring over longer distances.
Typically require a power source.
Describe some Transceiver types
SFP & SFP+ - Small form factor plugable
Commonly used to provide 1 Gbit/s fiber
Also can be used for GB copper
SFP+ - Exactly the same size as SFP, but supports data rates up to 16gb/s
Common with 10 GB ethernet
Describe QSFP and QSFP+
Quad small form factor plugable
-4 channel SFP = 4x1GB lines = 4GBit\s
QSFP+ 4x10GB lines = 40GBit\s
You can make use of BiDI (Bi Directional) over QSFP and QSFP+ for additional efficiency over one run.
Describe the differences between Duplex communication and BiDI (Bi Directional)
Duplex involves two fibers that independantly transmit and recieve.
BiDirectional allows for each of the two fibers to send and simutaliously recived on a single fiber line. Different wavelengths are used for send and receive functions for BIDI wires.
What is a krone Block
Alternative to 110 block. Common in Europe
You can use them for analog and digital communication
Different models allow for different frequencies
What is a BIX
Building Industry Cross_Connect
Common Block type
Updated through the years, with gigbix version using Cat6 cable
Describe the 10 and 100 megabit over copper Ethernet standards
10BASE-T (twisted pair)
Two pair, Category 3 cable min
100 meter max distance
100Base-TX (Fast Ethernet)
Two Pairs
Cat 5 or better
100 Meters
Describe the 1000 megabit over copper Ethernet standard
1000Base-T
Cat 5e - Four Pairs (all 8 cables are used)
100 meters
Describe the 10 Gigabit over copper Ethernet standards
10GBase-T
increased frequency of 500Mhz over 125 in 1000BASE-T
Cat 6 - Unshielded 55 Meters
Cat 6 - Shielded 100 Meters
Cat 6a (Augmented) - 100 Meters unshielded or shielded
Describe the 40 GB over copper Ethernet standards
4 pair twisted pair
Cat 8 cable - up to 30 meters
Describe 100 megabit over fiber Ethernet standards
100BASE-FX
-Pair of MultiMode Fiber
- Laser TX
- 400 Meters (Half Duplex)
- 2 KM (Full Duplex)
100BASE-SX
-Cheaper than FX - Uses LED transmitter
-300 Meter Max Distance
Describe the Gigabit over Fiber Ethernet standards
1000BASE-SX
-Gigabit using NIR (Near InfraRed) light
-Usually uses MMF
-220 Meters to 500 Meters depending on fiber type
1000BASE-LX
-Gigabit using long wavelength laser
-MMF up to 550 Meters
-SMF up to 5 KM
Describe 10 GB over fiber Ethernet standards
10GBASE - SR (Short Range)
-MMF
-26-400 meters, depending on the fiber
10GBASE -LR (Long Range)
-SMF
-10KM Range
What is WDM?
Wavelength Division Multiplexing
-Bidirectional Comms over a single fiber
-Uses different wavelengths for each carriers (different colors)
What is CWDM
Coarse Wavelength Division Multiplexing
10GBASE-LX4 - uses four 3.125 Gbit/s carriers at four different wavelengths
What is DWDM
Dense Wavelength Division Multiplexing
-Multiplex multiple OC carriers into a single fiber
Add 160 signals, which increase throughput to 1.6 Tbps
