Cable Types :
|CAT3||Unshielded twisted pair capable of speeds up to 10Mbit/s. Used with 10Base-T, 100Base-T4, and 100Base-T2 Ethernet.|
|CAT4||Unshielded twisted pair capable of speeds up to 20Mbit/s. Not widely used. Used with 10Base-T, 100Base-T4, and 100Base-T2 Ethernet.|
|CAT5||Unshielded twisted pair capable of speeds up to 100Mbit/s. May be used with 10Base-T, 100Base-T4, 100Base-T2, and 100Base-TX Ethernet.|
|CAT6||Can transmit data up to 220m at gigabit speeds. It has improved specifications for NEXT (Near End Cross Talk), PSELFEXT (Power Sum Equal Level Far End Cross Talk), and Attenuation. Cat 6 is backward compatible with lower Category grades and supports the same Ethernet standards as Cat 5e.|
|Multimode Fiber||Multimode fibers have large cores. They are able to carry more data than single mode fibers though they are best for shorter distances because of their higher attenuation levels.|
|Single Mode Fiber||USingle Mode fibers have a small glass core. Single Mode fibers are used for high speed data transmission over long distances. They are less susceptible to attenuation than multimode fibers.|
|RG59 and RG6||These are both shielded coaxial cables used for broadband networking, cable television, and other uses.|
|Serial||A serial cable is a cable that can be used to transfer information between two devices using serial communication, often using the RS-232 standard. Typically use D-subminiature connectors with 9 or 25 pins. Cables are often unshielded, although shielding cables may reduce electrical noise radiated by the cable.|
Shielded twisted pair (STP) – differs from UTP in that it has a foil jacket that helps prevent cross talk. Cross talk is signal overflow from an adjacent wire.
EMI – Electrical devices such as printers, air conditioning units, and television monitors can be sources of electromagnetic interference, or EMI. Some types of network media have more resistance to EMI than others. Standard UTP cable has minimal resistance to EMI, while fiber optic cable is highly resistant.
Plenum grade cabling – is required if the cabling will be run between the ceiling and the next floor (this is called the plenum). Plenum grade cabling is resistant to fire and does not emit poisonous gasses when burned.
Simplex – Signals can be passed in one direction only.
Half Duplex – Half duplex means that signals can be passed in either direction, but not in both simultaneously.
Full Duplex – Full duplex means that signals can be passed in either direction simultaneously.
**Source by wikipedia**
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