Karteikarten
Network hardware and physical Media
Karten in diesem Stapel (6)
- 1Network Hardware and Physical MediaSummary of flashcards
-Routers
-Switches
-Fibre Optic
-Coaxial
-Twisted Coaxial - 2RoutersThe main reason why we use routers is because they are used to connect multiple and to forward packets either have its own network or other networks.
Routers are considered a layer 3 device because its primary forwarding decision is based on the information in the Layer 3 IP packet, specifically the destination IP address. - 3SwitchesA switch can also be known as a switching hub, bridging hub, officially MAC bridge. A network switch is a computer networking device that connects devices together on a computer, by using packet switching to receive and also process and forward data to the destination device.
- 4Fibre OpticFibre Optic is a cable allows data to be transmitted by making use of light. A fibre-optic system:
1. The data is mixed (modulation) with the carrier light beam.
2. The beam is injected into the fibre-optic cable.
3. At the other end of the cable, a photo-detector senses the light and converts it into a normal electrical signal.
4. The signal is passed into electronic demodulator to extract the original data. - 5CoaxialCoaxial is a type of signal transmission cable. It has a thin copper core/wire about a millimetre thick. The core is separated from the outer sheath by some plastic spacers to keep the core in the centre of the cable at all times.
The outer sheath is braided cooper. So effectively it looks like a tube within a tube.
Some data transmission cable is co-axial. although it is used less these that, as twisted-pair and fibre-optic cables are more popular. - 6Twisted CoaxialTwisted coaxial is a type of cable that consists of two independently insulated wires twisted around one another. The use of two wires twisted together helps to reduce crosstalk and electromagnetic induction. While twisted-pair cable is used by older telephone networks and is the least expensive type of local-area network cable. most networks use twisted cabling some point along the network. Other types of cables used for LAN's include coaxial cables and fibre optic cables.
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- Karteikarten am Network hardware and physical Media , erstellt von 11.barfield am 14/09/2015.
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