Juniper Certification | JNCIA-Enterprise Routing & Switching | Day-1 An Overview on JNCIA

Overview on Juniper certification

In this module your going to learn for JNCIA cert on these following program;

• How Network works in detail
• specific technologies and protocols to be used
• How does data gets anywhere

Now we will move on to networking.

What is Networking ?

A networking is nothing but a communication between to end points on the internet. That this internet is just a bunch of interconnected machines (i.e., computers or printers) that each using their own private addresses (i.e., IP address). 

To function properly, the network must have a set of established protocols standardized rules for the format and exchange of messages. These protocols allow the linked computers and devices to interpret the signals they receive and to engage in meaningful “conversations” in order to accomplish tasks on behalf of users. 

For example, if two computers are linked, one might signal “ready to send” and wait for the other to signal “ready to receive.” When many computers share a network, the protocol might include a rule “talk only when it is your turn” or “do not talk when anyone else is talking.” Network protocols keep a data sender from swamping a receiver with messages the receiver has no time to process or space to store. Protocols must also be designed to handle network errors. 

Types of Network

There are two basic network types are local area networks (LAN) and wide area networks (WANs). 

LAN (Local Area Network) computers and other peripheral devices such as printers in a limited physical area, such as a home, business office, laboratory, or college campus. The computers and devices in a LAN may be connected by means of permanent links such as wires, coaxial cables, or optical fibers. LAN in homes and small offices are commonly linked wirelessly through Wi-Fi, technology that uses radio waves to transmit data.

WAN (Wide Area Network) connect computers and smaller networks to larger networks over greater geographic areas, including different continents. They may link the computers by means of cables, optical fibers, or satellites or may be wireless. However, their users commonly access the networks via a modem, a device that allows computers to communicate over telephone or cable lines or a wireless system. The largest WAN is the Internet, a collection of networks and gateways linking millions of computer users worldwide.

Stay tuned for more simplified notes for juniper networking certification.