Media and Connectors Flashcards

1.5, 5.5

1
Q

IEEE 802.3 Standard

A

■ Defines physical and data link layers, including MAC, for wired Ethernet
networks
■ Commonly used in Local Area Networks (LANs)

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2
Q

Twisted Pair Cables

A

■ A type of wiring in which two conductors of a single circuit are twisted
together
■ Twisting reduces electromagnetic interference and crosstalk

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3
Q

Unshielded Twisted Pair (UTP)

A

● Composed of pairs of wires twisted together without additional
shielding being added to the cable
● Lightweight, flexible, and cost-effective

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4
Q

Shielded Twisted Pair (STP)

A

● Includes shielding for better EMI protection
● More expensive, bulkier, and more difficult to install

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5
Q

CAT 5

A

100 Mbps at 100 meters

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6
Q

CAT 5e

A

1Gbps at 100 meters

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7
Q

CAT 6

A

1Gbps at 100 meters; 10 Gbps at 55 meters

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8
Q

CAT 6a

A

10 Gbps at 100 meters

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9
Q

CAT 7

A

10 Gbps at 100 meters

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10
Q

CAT 8

A

10-25 or 40 Gbps at 30 meters

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11
Q

RG-6

A

1 Gbps at 300 meters

● Used to support faster internet speed in most residential
installations
● Standard for modern coaxial cable
● Supports up to 1 Gbps at up to around 300-meter distance

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12
Q

Twinaxial

A

10 Gbps or more at 10 meters

● Often a component of DAC assembly
● Considered as another specialized form of cabling
● Two insulated copper conductors
● Used in SFP+ and QSFP applications
● Supports 10 Gbps to 100 Gbps, up to 100 meters

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13
Q

DAC

A

● Fixed assembly copper cabling for short distances
● Connects switches, routers, or servers

100 Gbps at 15 meters (active cables); 100 Gbps at 7 meters
(passive cables)

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14
Q

Plenum vs. Non-Plenum Cables

A

■ Plenum – Fire-retardant, suitable for air circulation spaces
■ Non-Plenum – Less fire-resistant, used where fire risk is lower
■ Plenum meets strict fire safety standards of NFPA and NEC

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15
Q

RJ-11

A

for voice-based communication networks (telephones)

● Standard for telephone wiring
● 6P2C configuration (6 positions, 2 conductors)
● Smaller size
● Not suitable for high-speed data transmission

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16
Q

RJ-45

A

for data devices in data networks (computers, printers, switches,
routers)

● Standard for data networks (Ethernet)
● 8P8C configuration (8 positions, 8 conductors)
● Widely used for computers, switches, routers in local area
networks
● Compatible with CAT 5 to CAT 8 cables – supporting higher
bandwidths with higher CAT numbers

17
Q

Radio Guide (RG-X)

A

■ Series for coaxial cables, used in high-speed internet, television, and radio
connections
■ Commonly used cables
● RG-6 – for cable TV
● RG-59 – for older applications

18
Q

F-Type Connector

A

for coaxial cables in cable TV, satellite, and cable internet
connections

● Screw-on connector used with RG-6 and RG-59 coaxial cables
● Standard for cable TV, satellite, and cable internet connections

19
Q

BNC Connector (Bayonet Neill-Concelman)

A

for professional video connections and radio frequency
applications

● Coaxial connector with a secure bayonet locking mechanism
● Used with RG-6 or RG-59 coaxial cables
● “Push and twist” style connector
● Common in professional video connections and radio frequency
applications
● Introduced in the 1940s, often erroneously called British Naval
Connector

20
Q

Straight Through Cable (Patch Cable)

A

Contains the exact same pinout on both ends of the cable

21
Q

Data Terminal Equipment (DTE)

A

Endpoint devices that connect to a piece of data communications equipment or DCE (laptops, desktops, servers, routers)

22
Q

Data Communications Equipment

A

Switches, hubs, modems, bridges

23
Q

Crossover Cable

A
24
Q

Single-Mode Fiber (SMF)

A

● Designed for long-distance communication
● Small glass core allows light to travel in a single path without
dispersion
○ 8.3 to 10 microns in diameter
● Preferred for backbone installations and connections over vast
areas
● Yellow sheath
● For long-range transmissions with higher bandwidth

25
Q

Multi-Mode Fiber (MMF)

A

● Tailored for shorter distances
○ 2 kilometers to 1 mile
● Larger fiber core size allows light to travel in multiple paths
○ 50 to 100 microns
● Suitable for connecting servers to switches within buildings or
campuses
● Aqua blue or orange sheath
● For internal network infrastructures, offering cost-effectiveness
and ease of installation

26
Q

SC Connector (Subscriber Connector)

A

○ Square shape with push-pull design
○ Widely used in single-mode fibers
○ Common in telecommunications and data networking
○ Used in FTTH deployments for reliability and ease of use

27
Q

LC Connector (Lucent Connector)

A

○ Compact size with push-pull mechanism
○ Favored in high-density applications like data centers
○ Often shipped as paired cables for transmit and receive
sides
○ Features high-precision alignment, ensuring efficient data
transmission and minimized potential data loss

28
Q

ST Connector (Straight Tip Connector)

A

○ Round shape with twist-lock mechanism
■ Critically important when operating in any kind of
environment where movement or vibrations might
occur
○ Reliable connection, commonly used in multi-mode fiber
optics
○ Well-suited for outdoor applications due to its durability

29
Q

MTRJ Connector (Mechanical Transfer-Registered Jack)

A

○ Small, rectangular design housing transmit and receive
fibers
○ Suitable for space-constrained applications like office LANs
○ Offers high-density capabilities with an RJ-style latch
mechanism
○ Offers cost-effective solution for densely populated
network environments

30
Q

MPO Connector (Multi-fiber Push On Connector)

A

○ Designed for multiple fibers in a single connector
○ Essential in high-density applications such as data centers
and high-speed networks
○ Enables quick and efficient connections, crucial for rapid
scalability

31
Q

Transceiver (Media Converter)

A

■ A device capable of both transmitting and receiving data
■ Blend of “transmitter” and “receiver”
■ Utilizes specific protocols for data transmission and reception

Transceiver Functions
■ Converts data between different protocols
■ Enables communication between Ethernet and Fibre Channel networks
■ Converts media types in Layer 1 (e.g., fiber to copper, copper to fiber)

32
Q

SFP (Small Form Factor Pluggable)

A

● A compact hot pluggable optical module
● Can be pulled in or pulled out without turning off the associated
router or switch
● Up to 4.25 Gbps