# data[].attributes.body
- A networking device that connects hosts by receiving incoming data packets and redirects them to their intended destination.
-Usually has Has 4 to 52 ports but also available in 512 ports and up.

# data[].attributes.body
- A networking device that allows multiple computers to communicate with each other.
- Has 4 to 12 ports.

# data[].attributes.body
- It replicates the data on all other interfaces when a computer sends information.

# data[].attributes.body
1. Network Hub - it is a hub that allows multiple computers to communicate with each other over a network.
2. USB Hub - it is a hub that allows multiple peripherals to connect through a single USB port.

# data[].attributes.body
- Simple
- Cheap
- Can connect different media types

# data[].attributes.body
- Half-duplex
- Wastes Bandwidth
- Causes unnecessary traffic

# data[].attributes.body
- packets are directed only to the port that leads to the device that packets are addressed to.

# data[].attributes.body
- Full duplex
-keeps a record of MAC addresses
-Prevents bandwidth waste
-Increases network size

# data[].attributes.body
- A networking device that interconnects two or more networks together by dividing LAN.
- Has 2 ports

# data[].attributes.body
- It divides LAN into segments
- Helps hosts to send and receive data to the specific segment where the receiver or another host belong.

# data[].attributes.body
- More expensive

# data[].attributes.body
none

# data[].attributes.body
- Reduces network traffic
- Prevents bandwidth waste
- Keeps a record of MAC addresses

# data[].attributes.body
- Expensive
- Slower than hubs

# data[].attributes.body
- Modulator-Demodulator
- A networking device that allows devices to send and receive data over the internet by converting analog signal into a digital signal and vice versa.

# data[].attributes.body
- It demodulates incoming analog signals into a digital signal
- It modulates outgoing digital signals into an analog signal

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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 - used to transfer digital signals over standard telephone lines.
3. USB Modem - a portable modem (known as a dongle) that plugs directly into a USB port and uses a SIM card to connect to the internet.

# data[].attributes.body
- High transmission speed
- Supports different media types

# data[].attributes.body
- Vulnerable to malware and hackers
- Expensive

# data[].attributes.body
- A network device that replicates and amplifies a received signal to an extended geographical area.

# data[].attributes.body
- By amplifying then received signal then rebroadcasts it to another area.

# data[].attributes.body
1. Wi-fi repeater- is used to extend the coverage area of your Wi-fi network.
2. Network repeater- Whatever it receives it transmits to the other LAN segments.
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.
5. Radio repeater- this is used to extend the coverage of a radio signal.

# data[].attributes.body
-it amplifies the signal
- it does not effect the performances of the network.
- repeaters can be used in different mediums for receptions and transmission.
-it does not increase or decrease the network traffic.

# data[].attributes.body
-it is not possible to connect different network architectures using repeater. For this router or gateway is needed.
- the number of repeater used are limited between two ends. More repeaters create noise on the wire which results into packet collisions into the packet detections.
-repeaters do not perform filtering of the data.

# data[].attributes.body
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.

# data[].attributes.body
It routes or passes the internet connection to all devices connected to it by distributing data packets to intended destination using the IP addresses of each device.

# data[].attributes.body
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- is a combination of bridge and router.
4. Modem router- is the most used router nowadays. Is a router with built in USB port and ethernet ports.

# data[].attributes.body
- Communicate across networks.
- Keeps a record of IP address.
- Prevents bandwidth waste.
- Increases network size.

# data[].attributes.body
- More expensive
- Security risks