LAN, MAN, WAN, PAN , CAN | Computer Networks
Types of Computer Networks Explained
Overview of Computer Networks
- The video introduces the topic of computer networks, emphasizing their importance for exams and interviews. It highlights that understanding the basics is crucial for various applications.
Types of Networks
Personal Area Network (PAN)
- PAN is defined as a network type with a range typically up to 100 meters, often utilizing Bluetooth technology for connectivity.
- The key distinction between different network types lies in their range; PAN has the shortest distance compared to others like LAN and WAN.
Local Area Network (LAN)
- LAN extends its range significantly, allowing connections within kilometers, suitable for homes or schools.
- Technologies used in LAN include wired connections and Wi-Fi, facilitating private networking within buildings.
Metropolitan Area Network (MAN)
- MAN covers larger areas such as cities, with ranges up to 250 kilometers. It connects multiple LANs across metropolitan regions.
- This type of network can be public or private, depending on usage needs and infrastructure availability.
Wide Area Network (WAN)
- WAN encompasses vast distances and is synonymous with the internet. It connects multiple networks globally through various technologies.
- Transmission speeds vary widely in WAN due to increased distances and device numbers involved in maintaining connectivity.
Key Differences Among Network Types
- The primary differentiator among PAN, LAN, MAN, and WAN is their operational range: PAN being the smallest and WAN being global.
Internet Evolution and Telephone Networks
The Transition from Telephone Networks to the Internet
- The discussion begins with the challenges of transitioning to internet action, highlighting that the internet's origins are tied to telephone networks established in the 1990s.
- It is noted that during this period, concepts like STD (Subscriber Trunk Dialing) and ISD (International Subscriber Dialing) were prevalent, indicating a reliance on traditional telephony for communication.
- The speaker references local calls and their connection to these older systems, emphasizing how they laid the groundwork for later internet developments.