Cabling and termination Flashcards
What is used to stop the connection bouncing back and forth in a bus topology?
Terminators
What is the name of the “talking pillow” used in ring topologies?
The token
How did manufacturers make hybrid topologies such as star bus and star ring?
They reduced the ring and bus into a single device that sat at the center of the network.
What is partial mesh topology.
Not everything is connected, but at least two computers have redundancy
Coax consists of the copper core, ______, _________ and the jacket
Insulation, braiding
What are the two types of connectors for coax
BNC and F connector. (screw in)
What are the two ratings of Coax
RG 59 and RG 6. The former is used for tv cabling, the latter for networks.
What is Twinax
Two copper cores in a coax cable
What is the purpose the twists in TP cabling
Reducing crosstalk
What is F/UTP
Twisted pair with foil shielding on the outside, but no protection on the twisted pairs themselves.
What is S/UTP
Braided shield over the cable, no protection on twisted pair
What is S/FTP
Braided shield on an ethernet cable, foil shielding on each twisted pair.
What is the speed of cat 5
100mbps
What is the speed of cat 6
10gbps at 55m
What’s the difference between rj 11 and 45
11 has 4 gold contacts (4P4C) and 45 has 8 (8P8C)
What does 8P8C mean.
Eight position, eight contacts. Describes wires and contacts on ethernet cabling.
Fiber cabling consists of the core, ______, _______ and the jacket.
Cladding, buffer.
What is a µ
A micro measurement. Used for measuring cladding/core width.
What is a nm
Nanometer. One billionth of a meter. Used to measure wavelengths within fiber.
What was made to fix the fiber optic cabling issue of needing a send and receive cable.
Full duplex fiber. LC and MTRJ
What are the alternate abbreviations for SMF and MMF
OS, OM
Which OM versions use LEDs and is their colour
OM1, OM2 (orange)
Which OM versions use lasers and what are their colours
OM3,4,5 (Aqua for 3/4, lime for 5)
What colour is OS cabling
Yellow
What are the terms that can be used for ST and SC connectors?
Snap twist, snap click.
What does PVC mean
Polyvinyl Chloride.
What term is used to describe the interconnectivity of network components?
Topology
Coaxial cables all have a(n) _______________ rating.
Ohm
Which network topology is most commonly seen only in wireless networks?
Mesh
Which of the following is a duplex fiber-optic connection? A. LC B. RJ-45 C. ST D. SC
LC
What is the most common category of UTP used in new cabling installations? A. Cat 3 B. Cat 5e C. Cat 6 D. Cat 7
Cat 6
Star bus is a _____ star and _____ bus topology
physical, logical
What is the difference between a cat 5e and cat 6 RJ45
Cat 5e’s pins (above the gold contacts) are in a line. Whereas the cat 6 version has them in an “up down up down” pattern
What is the purpose of a Wiremap tool
To determine continuity within a cable’s termination
What is the purpose of a Time Domain Reflectometer
Measures length of a cable - also has a fiber optic variant in OTDR
What is NEXT and FEXT
Near and fear end crosstalk - interference bleeding between the twisted pairs within an ethernet cable
What is crosstalk measured in (Ethernet)
dB
