A computer network allows connected computing devices to exchange data over data connections. Early networks in the late 1950s included military radar systems. A network diagram shows how different devices interconnect. Key networking peripherals include routers that forward data between networks, firewalls that control incoming and outgoing traffic based on security rules, and switches that link network segments. Common systems used in networks are laptops and servers.

1. Computer Network and
Networking Peripherals
Kapil Ramesh Rode
DOMSMBA11P006

2. Definition of Computer Network
A computer network or data network is a
telecommunications network that allows computers to
exchange data. In computer networks, networked
computing devices pass data to each other along with
data connections.
History : In the late 1950s, early networks of
communicating computers included the military radar
system Semi-Automatic Ground Environment (SAGE).

3. Network Diagram

4. Multiple network diagram

5. Networking Peripherals
• Router
A router is a device that forwards data packets between networks, creating
an overlay internetwork. A router is connected to two or more data lines
from different networks
• Firewall
In computing, a firewall is a software or hardware-based network security
system that controls the incoming and outgoing network traffic by
analyzing the data packets and determining whether they should be allowed
through or not, based on a rule set. A firewall establishes a barrier between
a trusted, secure internal network and another network (e.g., the Internet)
that is not assumed to be secure and trusted.

6. • Switch
A network switch or switching hub is a computer networking device
that links network segments or network devices
• Systems that used in network
Networking Peripherals
laptop system Server

7. • Thank you