3. Intermediary devices are node devices that are
designed to forward the data from one side to
another side in a computer network. These
intermediary devices work as a connecting
medium (along with other services being
offered) for other nodes and handle the tasks in
the background ensuring that the data flows
effectively at desired flow rates across the entire
computer network.
4. The intermediary devices for the management of
the data flowing through them use various
addressing systems such as IP Address, MAC
Address, and Port Numbers (or Port Address) along
with the information about the network
interconnections. Further various types of
switching in the computer networks determine the
path that messages take through the network
during the communication.
5. Functions of Intermediary Devices :
Signal damping is a common phenomenon that is
overcome via regeneration and retransmission of
the data signals done by these devices.
To ensure successful transfers these devices keep
record of information of source address,
destination address or different pathways existing
through the network depending upon the switching
technique being employed.
7. HUB
At the simplest side of the
equipment scale is the hub. This is
a very simple device that connects
together multiple local area
network (LAN) devices. The only
function of the hub is repeating
the electrical signals received on
one port, relaying those signals to
all other connected ports. It does
nothing else.
8. Switch
In its simplest form, a switch is a multiport bridge with some
additional functionality. The switch almost completely
ended the risk of collisions on hub-centered networks.They
connect devices in a network and use packet switching to
send, receive or forward data packets or data frames over
the network.
9. Wireless Access Point
An access point is 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 WiFi signal to a designated
area.
10. File Server
In computing, a file server is a
computer attached to a
network that provides a location
for shared disk access, i.e.
storage of computer files that
can be accessed by the
workstations that are able to
reach the computer that shares
the access through a computer
network.
11. Web Servers
On the hardware side, a web
server is a computer that
stores web server software
and a website’s component
files (for example, HTML
documents, images, CSS
stylesheets, and JavaScript
files). A web server connects
to the Internet and supports
physical data interchange with
other devices connected to
the web.
12. Print Server
The server connects with computers over a network and allows them
to communicate with available printers. The print server helps printers
avoid overloads. It queues print jobs and manages their distribution to
devices to ensure orderly operation and to avoid overloading printer
hardware.
13. Modems
A modem is a device that
connects your home, usually
through a coax cable
connection, to your Internet
service provider (ISP), like
Xfinity. The modem takes
signals from your ISP and
translates them into signals
your local devices can use, and
vice versa.
14. Routers
A router is a device that
connects two or more
packet-switched networks or
subnetworks. It serves two
primary functions: managing
traffic between these
networks by forwarding data
packets to their intended IP
addresses, and allowing
multiple devices to use the
same Internet connection.
15. Routers
A router is a device that connects
two or more packet-switched
networks or subnetworks. It
serves two primary functions:
managing traffic between these
networks by forwarding data
packets to their intended IP
addresses, and allowing multiple
devices to use the same Internet
connection.
16. Bridge
A bridge is a type of computer
network device that provides
interconnection with other
bridge networks that use the
same protocol. Bridge devices
work at the data link layer of the
Open System Interconnect (OSI)
model, connecting two different
networks together and
providing communication
between them.
17. Repeaters
Repeaters are commonly used
by commercial and amateur
radio operators to extend
signals in the radio frequency
range from one receiver to
another. These consist of drop
repeaters, similar to the cells
in cellular radio, and hub
repeaters, which receive and
retransmit signals from and to
a number of directions.
18. Security Firewalls
A Firewall is a network security device that monitors and filters
incoming and outgoing network traffic based on an organization’s
previously established security policies. At its most basic, a firewall
is essentially the barrier that sits between a private internal
network and the public Internet.
