[Day-2 Hindi] Networking Concepts - IP Address, IPv4 vs IPv6, DHCP, DNS, ISP, Static vs Dynamic IP

Offensive Cyber Security Training Bootcamp is organized for students, freshers and working professionals who are looking to start their career or want to switch their career into Cyber Security, even from Non-IT background.

Topics covered in the video:

Introduction to Network (Networking Concepts)
Types of area network
IP Address
IPv4 vs IPv6
Static IP vs Dynamic IP
Public IP vs Private IP
What is DHCP, ?
What is DNS ?
What is IANA ?
What is ISP ?
Working mechanism of Google search (What happens when we hit URL)

Introduction to Network:
A network refers to a collection of interconnected devices that share resources and information. It enables seamless communication and data exchange among these devices. Networks can vary in size and scope, facilitating connections within a limited area, like a building, or across vast distances, as seen on the internet.

Types of Area Networks:

1. Local Area Network (LAN): LANs are confined to a small geographical area, such as a home, office, or campus. They enable quick data transfer and resource sharing among devices in close proximity.

2. Wide Area Network (WAN): WANs cover larger areas, often spanning cities, countries, or continents. The internet itself is the most expansive WAN, connecting computers globally.

3. Metropolitan Area Network (MAN): MANs encompass cities or large campuses. They bridge the gap between LANs and WANs, providing connectivity within a metropolitan region.

IP Address:

An IP (Internet Protocol) address is a unique numerical label assigned to each device on a network. It serves as an address that allows devices to locate and communicate with one another across the internet or a local network.

IPv4 vs IPv6:

- IPv4: The older version that uses a 32-bit address format. Its limited number of addresses (about 4.3 billion) is becoming inadequate with the growing number of devices.
- IPv6: The newer version that employs a 128-bit address format. It provides an immense number of addresses (around 340 undecillion), addressing the shortage issue and accommodating the internet's expansion.

Static IP vs Dynamic IP:

- Static IP: A fixed IP address manually assigned to a device. It remains constant, making it suitable for servers and devices that require consistent identification.
- Dynamic IP: An IP address assigned automatically by a DHCP server when a device joins a network. It can change, saving addresses and being practical for devices like home computers.

Public IP vs Private IP:

- Public IP: Unique globally, public IPs identify devices on the internet. They facilitate communication with devices on different networks, such as accessing websites.
- Private IP: Limited to a local network, private IPs identify devices internally. They're not globally unique and serve communication within the same network, away from direct internet access.

DHCP, DNS, IANA, ISP:

- DHCP (Dynamic Host Configuration Protocol): DHCP automates IP address assignment and network configuration. It simplifies the process of connecting devices to networks by dynamically managing addresses.
- DNS (Domain Name System): DNS translates human-readable domain names into IP addresses. It's crucial for browsing, as it eliminates the need to remember complex numeric addresses.
- IANA (Internet Assigned Numbers Authority): IANA oversees global IP address allocation, domain names, and protocol parameters. It maintains the internet's stability and uniformity.
- ISP (Internet Service Provider): ISPs offer internet access to users, providing various connectivity types such as broadband or fiber-optic. They enable individuals and organizations to connect to the internet.

Working mechanism of google search:

When you search on Google, a complex process unfolds. Your request travels through your Internet Service Provider (ISP) to Google's servers. Here's the workflow:

Search Query: You enter a search query in your browser.
ISP: Your ISP receives the query and assigns your device an IP address dynamically via DHCP. This address is your digital location on the internet.
DNS Resolution: The query goes to a DNS server. DNS translates the domain name (like "google.com") into an IP address computers can understand. This step enables you to access Google's servers.
Google Servers: Your query reaches Google's servers through your ISP. Data Transmission: The result's data (webpage content, images) is sent from Google's server back through your ISP to your device.
Rendering: Your browser receives the data and renders the webpage for you to view.

This journey, involving DHCP, ISP, DNS, and Google's servers, happens in a fraction of a second, providing you with the search results you requested.

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Видео [Day-2 Hindi] Networking Concepts - IP Address, IPv4 vs IPv6, DHCP, DNS, ISP, Static vs Dynamic IP канала BlueXploit