2.1 Cabling, tranciever, termination shit Flashcards
RG-6
Used for Cable internet/TV
Coaxial
F-connector
RG-59
Used for short distances
Coaxial
F-connector
BNC
Connector for DS3/T3 WAN coaxial cables
F-connector
RG-6, RG-59
CATV/cable modem/DOCSIS modem
RJ-45
Ethernet twisted pair, 8 position 8 pin.
RJ-11
Telephony twisted pair, 6 position 2 pin.
DB-9
RS-232. Used for asynchronous serial communications and connecting to an external modem.
RS-232
Serial communications, DB-9/DB-25 connector.
Cat3
10 Mbps
10BASE-T
Only 2 pairs.
Cat5
(Identical to cat5e)
1 Gbps (1000 Mbps) 1000BASE-T
Cat5e
(Identical to cat5)
1 Gbps (1000 Mbps) 1000BASE-T
Cat6
10 Gbps up to 55m
10GBASE-T
Cat6a
10 Gbps
10GBASE-T
Cat7
10 Gbps
10GBASE-T
Additional EMI and crosstalk resistance over cat6a
1000BASE-T
“gigabit ethernet”
uses ALL pairs
cat5, cat5e
10GBASE-T
cat6, cat6a, cat7
1000BASE-LX
1 Gbps fiber optic ethernet;
multi-mode = 550m
single-mode = 5km
1000BASE-SX
1 Gbps fiber optic ethernet;
220m-500m
usually used for mmf
MMF
Multimode fiber, shorter range up to 2km.
Often used for server patch cabling.
SMF
Singlemode fiber, long range up to 100km
What two fiber connectors are used to control light loss?
UPC
APC
UPC
Ultrapolished connector, 0 degree angle.
High return loss, lower insertion loss.
APC
Anglepolished connector, 8 degree angle.
Low return loss, higher inseration loss.
ST
Straight tip
bayonet connector with long tip and twisted in
SC
Subscriber Connect/Square
Keyed so it can only go in one way
LC
Lucent Connector/Little
Can be dual connectors with individuals TX/RX, or single connectors
has “trigger”
MT-RJ
Mechanical Transfer Registered Jack
Smallest optic connector
Has both TX/RX fibers in same cable
Looks like RJ-45
568A has what color first?
green
568B has what color first?
orange
What is a straight-through cable used for?
Connecting workstations to network devices, patch cables (unlike devices).
What is a crossover cable used for?
Connecting similar devices.
What is Auto-MDI-X?
Eliminates the need for straighthrough or crossover cables; crossover done in NIC hardware.
What is 66 block?
Analogue voice
Needs specialized punchdown tool
No connectors
What is 110 block?
Wire-to-wire patch panel
Uses cat5/cat6
Needs connector blocks.
RJ45 connectors on other side
Duplex fiber transcievers, what is important to know about them?
Traffic can only flow one direction on each wire, therefore the transmit and reciever connectors must be reversed on both devices to allow communication.
What is BiDi
Bi-Directional Transciever;
Fiber optic traffic can go in both directions across a single fiber, less runs needed.
What is GBIC
Gigabit Interface Converter;
Copper and fiber transciever, large in size
What is SFP/SFP+?
Small Form-factor Pluggable;
Used for 1 Gbit fiber
SFP+;
Used for 10-16 Gbit networks
What is QSFP?
Quad Small Form-factor Pluggable;
4 channel SFP in one small connector, x4 the throughput
What can be used to save money for fiber optic connections?
Using QSFP with Bi-Di transcievers to efficiently transfer data over a single run rather than having multiple runs.
100BASE-TX
“fast ethernet”
cat5 or better, uses only TWO PAIRS of wires
What is the difference between 100BASE-TX and 1000BASE-T?
100BASE-TX only uses 4 wires instead of all 8 like 1000BASE-T.
