# data[].attributes.body
is a networking device that
connects hosts by receiving
incoming data packets and
redirects them to their intended destination.

more intelligent than hub

4 - 52 ports

# data[].attributes.body
switches allow different devices communicate and it stores the MAC address of the devices to the CAM table

# data[].attributes.body
-it 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 available in 4-12 ports

# data[].attributes.body
full duplex

keeps record of Mac address

prevents bandwidth waste

increases network size

# data[].attributes.body
When a Hub receives a data it will transit it to other network devices.

# data[].attributes.body
more expensive

# data[].attributes.body
is a network device that replicates and andamplifies a received signal to anextended geographical area.

# data[].attributes.body
repeaters work by amplifying the received signal then rebroadcasts it to another area.

by amplifying the signal, a repeater increases the transmission range of the original signal.

# data[].attributes.body
WiFi Repeater - is used to extend the coverage area of your Wi-Fi network.

Network Repeater - 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 Cable Repeater

Radio Repeater - this is used to extend the coverage of a radio signal.

# data[].attributes.body
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.

# data[].attributes.body
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.

# data[].attributes.body
Network Hub
- that allows multiple computers to communicate with each other over a network.

USB Hub
- is a hub that allows multiple peripherals to connect through a single USB port.

# data[].attributes.body
is a kind of networking 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.

can be wired and wireless

can also work by
connecting LANs that
work on the same protocol.

# data[].attributes.body
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.

# 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
- cheap and simple
- can connect different media types

# data[].attributes.body
- half-duplex
-wastes bandwidth
-causes unnecessary traffic

# data[].attributes.body
-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.

-is a short for "Modulator" and "Demodulator"

# data[].attributes.body
Modem demodulates incoming analog signals into a digital signals.

Modem modulates incoming digital signals into an analog signals.

# data[].attributes.body
Cable Modem
is a modem that uses coaxial cables to provide cable TV and high speed internet access.

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

USB Modem
-is a portable modem that plugs directly into a USB port and uses a SIM card to connect to the internet.

-it is also known as Dongle.

# data[].attributes.body
-high transmission speed
-supports different media types

# data[].attributes.body
-vulnerable to malware and hackers
-expensive

# 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
Wired Router
-are typically box-shaped devices that connect directly to computers via "hard lined' or wired connections.

Wireless Router
-is a router that distributes internet connection through one or more antenna.

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

Modem Router
-is the most common router used nowadays.
-it is a router with built-in usb port and ethernet ports.

# data[].attributes.body
-communicate across network
-keeps a record of IP Address
-prevents bandwidth waste
-increases network size

# data[].attributes.body
-more expensive
security risks