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Is a network device that replicates and amplifies a received signal to an extended geographical area.

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Repeaters work by amplifying the received signal then rebroadcasts it to another area.

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1.Wi-Fi repeater-is used to extend the coverage area of your Wi-Fi network.
2.Network repeater-The specific characteristic of this is that  whatever it receives it transmits to the other LAN segment.
3.Telephone repeater-is used to amplify signals to support and carry long distance calls.
4.Submarine cable repeater-is a cable laid on the sea bed between land-based stations to carry telecommunication signals across stretches of ocean and sea. Subsequent generations of cables carried telephone traffic, then data communications traffic.
5.Radio repeater--this is used to extend the coverage of a radio signal.

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It amplifies the signal.
It does not affect the performance of the network when its performing its task on the signal.
It does not increase or decrease the network traffic.

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Repeaters do not perform filtering of the data.
It is not possible to connect different network architectures using repeater.

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Is a networking device that allows devices to send and receive data over the internet

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Is a networking device that connects computers and other devices to the internet by acting as a dispatcher that chooses the best route for the packets to travel.

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It routes or passes the internet connection to all devices connected to it distributing data packets to intended destination using IP addresses of each devices.

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Modems demodulate incoming analog signals into digital signals

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1.Wired Router-are typically box shaped devices that connect directly to computers via "hard-lined" or wired connections.
2.Wireless Router-is a router that distributes internet connection through one or more antenna (wireless access points).
3.Brouter-Combination of router and bridge.It can forward data between networks (serving as a bridge), but can also route data to individual systems within a network.
4.Modem Router-is the most common router used nowadays.It is a router with built-in usb port and Ethernet ports.

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1.Cable Modem-is a modem that uses coaxial cables to provide cable TV and high-speed internet access.
2.DSL Modem-is a modem used to transfer digital signals over standard telephone lines.
3.USB modem-is a portable modem(known as a dongle) that plugs directly into a USB port and uses SIM-card to connect to the internet.

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Increase network size
Prevents Bandwidth waste
Keeps a record of IP addresses
Communicate across networks

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More expensive
Security risks

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High transmission speed
Supports different media types

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Vulnerable to malware
Expensive

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Is a networking device that allows multiple computers to communicate with each other over a network

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Is a networking device that connects hosts by receiving incoming data packets and redirects them to their intended destination

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With a switch, packets are directed only to the port that leads to the device that packets are addressed to. Switches typically connect LAN segments, so hubs attach to them. Switches filter out traffic destined for devices on the same LAN segment

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Full-Duplex
Keeps a record of mac addresses
Prevents Bandwidth waste
Increase Network Size

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More Expensive

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1. Network Hub- is a hub that allows multiple computers to communicate with each other over a network
2.Usb Hub- is a hub that allows multiple peripherals to connect through a single usb port

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Cheap and Simple
Can connect different media types

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Half-Duplex
Wastes Bandwidth
Causes Unnecessary traffic

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Is a kind of device that interconnects two or more networks together by dividing LAN into different segments

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Bridges work by dividing a
LAN into segments and help
the hosts send and receive
data to the specific segment
where the receiver or
another host belong.

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Reduces Network Traffic
Prevents bandwidth waste
keeps a record of mac addresses

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Expensive
Slower Hubs