Course 1:CCNA with security

NETWORK
source:
A computer network, or data network, is a digital telecommunications network which allows nodes to share resources. In computer networks, computing devices exchange data with each other using connections between nodes.wikipedia

Module-1
The objective of this module is to help you to lean the basic purpose and functions of various network devices and components. We also learn about media, cables, ports and connections required to connect to network devices to other network devices and hosts in a LAN.

Purpose and Functions of Network Devices
Hub
Ethernet hubs
Switches
Bridges
Routers
Routing Tables
Brouters

Components Required to meet a given Network Specification
Network Interface Card(NIC)
Modems
Transmission Media
Twisted-Pair Cable
Fiber-Optic Cable
Ethernet Cabling Standards

Basics of IP Address
Subnetting

OSI and TCP Models
Physical Layer-1
Data Link Layer-2
Network Layer-3
Transport Layer-4
Session Layer-5
Presentation Layer-6
Application Layer-7

To be Continued...,