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Is a networking device that allows multiple computers to communicate with each other over a network by broadcasting all incoming data to all active ports. it is also available in 4 to 12 ports

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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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When a hub receives a packet of data at one of its ports from a network device, it transmits the packet to all of its ports to all of the other network devices.

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key building blocks for any network. They connect multiple devices, such as computers, wireless access points, printers, and servers

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Network hub-is a hub that allows multiple computers to communicate with each other over a network

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Full-duplex
Keeps a record of MAC Address
Prevents Bandwidth Waste
Increases network size

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More Expensive

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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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is 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.

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-half-duplex
-wastes bandwidth
-causes unnecessary traffic

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Modem converts the digital signal
into analog signal (Modulation)

Modems extracts the analog signal to
become a digital signal (Demodulation).

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CABLE MODEM -is a modem that uses coaxial cables to
provide cable TV and high-speed
internet access.

DSL MODEL-is a modem used to transfer
digital signals over standard
telephone lines.

USB MODEM-is a portable modem (known as a
dongle) that plugs directly into a
USB port and uses a SIM-card to
connect to 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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High Transmission Speed

Support Different Media Types

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Vulnerable to malware and hackers

Expensive

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-A router is what routes or passes your internet connection to all of your devices.
-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

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is a network device that replicates and

amplifies a received signal to an
extended geographical area.

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amplifying
the received signal then

rebroadcasts it to another area.

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Wi-Fi Repeater-is used to extend the coverage
area of your Wi-Fi network.

Network Repeater-The specific characteristic of
this is that whatever it
receives it transmits to the
other LAN segment. This
does not understand the
frame format and also
physical addresses. In other
words, it is a transparent
device. Therefore, multiple
LANs connected by
repeaters may be
considered as a single LAN.

Telephone Repeater-is used to amplify
signals to support and
carry long distance calls.

Submarine Repeater-No Definition in slides

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 it’s performing its task on the signal.

Repeaters can be used in different mediums for
reception and transmission.

It does not increase or decrease the network traffic.

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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-is a combination of bridge and router and it can forward data between networks (serving as a bridge), but can also route data to individual systems within a network (serving as a router).

4,modem router-is the most common router used nowadays and it is a router with built-in usb ports and ethernet ports.

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It is not possible to connect different network
architectures using repeater. For this router or gateway is
needed.

The number of repeaters to be used are limited between
two ends. More repeaters create noise on the wire which
results into packet collisions or problems in the packet
detection.

Repeaters do not perform filtering of the data.

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-communicate across networks
-keeps a record of IP address
-prevents bandwidth waste
-increases network size

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-more expensive
-security risk

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-its a kind of network device that interconnects two or more networks together by dividing LAN into different segments.

-commonly has a single input and single output port, thus making it a 2 port device.

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Bridges work by dividing a LAN into segments and help the hosts send and receive data to a specific segment where the receiver or another host belong. Bridges can also work by connecting LANs that work on the same protocol.

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-reduces network traffic
-prevents bandwidth waste
-keeps a record of MAC addresses

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-expensive
-slower than hubs