Comptia a+ - Networking and Cables

Comptia, cables, networking, 3.2

What is a Ethernet Cable?

Describe this cable : Ethernet

Twisted pair copper cables commonly used for LAN and internet connections.

What is an LAN?

Describe this cable: Coaxial

Copper cable with shielding, used in older networks and cable tv systems

Why do we shield cables?

Why is copper used in cables?

What is the advantages to a ethernet. cable?

What are the disadvantages to the ethernet cable?

Describe this cable: Fiber optic

Uses light signals through glass or plastic fibers for data transmission.

What are the advantages of fiber optic?

Extremely fast speeds, long distance, immune to electrical interference.

What are the downsides of fiber optic cables?

More expensive, fragile, hard to install, requires special skills and tools.

What is coaxial cabling

a type of copper cabling taht carries electrical signals (not power). uses two conductors that share the same axis. core signal is enclosed by plastic insulation, then a wire mesh conductor serves as shielding from EMI and grounding.

What does a twisted pair cable do?

What is EMI?

What is a coaxial cable mostly used for?

CCTV installations asn a patch cable. for Cable Access TV(CATV) and broadband cable modem. (usually with a screw down f-type connector)

What kind of connector is this?

Bayobet Neil-Concelman (BNC) Connector

What type of connector is this?

F-type coaxial cable

What is a plenum space?

A void in a building designed to carry heating, ventiation, and HVAC systems. (False ceiling or raised floor)

What makes plenum cables different from GP cables?

They use treated PVC or flourinated ethylene polymer (FEP) as insulation. Can make cables stiffer with no effect on bandwith. Marked as CMP on jacket.

What is a OSP cable?

Runs on the external walls of a building or between buildings. Makes vulnerable to weathering.

When are ariel cables used?

usually strung between two poles or anchors. The UV rays and exposure to weather will degrade regular PVC.

Where are DB cables used?

Laid then covered with earth, concrete, or cement.

When are conduit cables used?

Where it needs more protectin for buried cable runs. Can be exposed to extreme tempuratures and damp conditions.

What does a DVI cable support?

(Digital video interface) supports analog and digital outputs. It is no longer actively developed and is found on older displays and video cards.

What does eSATA stand for?

external serial advanced technology attachment

What does an eSATA allow for?

It allows for peripheral deives to connect using a cable up to 2 meters (78 in.)

What is an eSATA required for?

Connection to an external eSATA port.

Identify this cable

eSATA port

What does HDMI stand for?

high definition multimedia interface

What is an HDMI cord used for?

televisions, monitors, gaming consoles, etc

Pros of HDMI?

high resolution, versitile, increased refresh rate, advanced features ( HDR- high dynamic range) 

Where is display port most commonly used?

Digital display interface, connecting video source to a dispay like a computer monitor.

Display port preffered use

Professional environment, Gaming setups.

What are the key features of display port?

higher resolution and refresh rates than HDMI

Multi stream transport allows multiple displays to be connected to a single port.

transmits audio

reduces screen tearing

What is  MST?

Why is the lightning cable being phased out of modern tech?

USB-C is faster and more efficient, it has more uses and works better for devies.

What is a Molex power connector?

wires used purely for data transfer (No power supplied)

What are the two catagories fiber optic cables can fall into?

single mode fiber - small core, designed for long wavelength, supports data up to 10 Gbps or better

Multimode fiber- larger core, designed for shorter wavelengths