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Computer Networking Devices for Network.pdf
- 1. Modem A hardwaredevice that allows a computer to send and receive data over a telephone line or a cable or satellite connection. In the case of transmission over an analog telephone line, which was once the most popular way to access the internet, the modem converts data between analog and digital formats in real time for two-way network communication. Devices for network
- 2. Router The main functionof the router is to sorting and the distribution of the data packets to their destinations based on their IP addresses.
- 3. Access Point (WAP) A device that creates a wireless local area network, or WLAN, usually in an office or large building. An access point connects to a wired router, switch, or hub via an Ethernet cable, and projects a Wi-Fi signal to a designated area.
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- 5. HUB It isthe central connecting device in a computer network. When data packets arrives at hub, it broadcast them to all the LAN cards in a network and the destined recipient picks them and all other computers discard the data packets.
- 6. Switch is anintelligent device that maps the IP address with the MAC address of the LAN card. Unlike the hubs, a switch does not broadcast the data to all the computers, it sends the data packets only to the destined computer. Managed switches provide all the features of an unmanaged switch and provide the ability to configure, manage, and monitor your LAN. Unmanaged switch simply allows Ethernet devices to communicate with one another, such as a PC or network printer, and those are typically what we call “plug and play.”
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- 9. Patch Panel Acentral location that can provide a simple, neat and easy- to-manage solution. A patch panel performs no other function except for acting as a connector..
- 12. LAN Card LANcards or network adapters are the building blocks of a computer network. No computer can communicate without a properly installed and configured LAN card.
- 13. Keystone Jack orIO Jack a female connector used in data communications, particularly local area networks (LANs). The jack is usually mounted in a wall plate or patch panel. A keystone plug is the matching male connector, usually attached to the end of a cable or cord.
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- 15. Raceways A raceway isa channel that contains cables. Raceways include common electrical conduits , specialized cable trays or ladder racks , in-floor duct systems , and plastic or metal surface mounted raceways.
- 16. CAT.5 Installation DON’T overstresscables by overtightering cable ties, especially to the point where crush stress is visible. DO use tie wraps loosely on large bundles. (see also “Using Tie-wraps”) DO use Velcro tie wraps to secure large bundles. DO use cable clamps on individual runs. RUNNING & SECURING CABLE USING WIRE CHANNELS DO use sweeping bends. DON’T allow the cable to form right angles or sharp bends.
- 17. CAT.5 Installation STAPLING CABLE USINGTIE-WRAPS DO staple by hand, or use staplers with depth stops. DON’T squish cables when securing them. DO use Velcro to keep cables from becoming over-cinched. DON’T chinch the cables tightly, especially to the point where crush stress is visible. DO tie-wrap the bundle loosely. DO use Velcro as a flexible and reusable alternative to plastic tie-wraps to keep bundles from cinching.
- 18. CAT.5 Installation REMOVING CABLEJACKET DON’T remove too much cable jacket. DO retain cable jacket as close to the termination point as possible. MAINTAINING PAIR TWISTS DURING TERMINATION DON’T untwist the cable pairs more than 12 mm and DON’T strip cable jacket back any more than you need to. DO maintain pair twists to within 12 mm of the termination point, and the cable jacket is maintained as close to the terminations as possible.