Computer Network Tutorial

Introduction of Computer Network Types of Computer Network Network Topology Computer Networking Architecture Transmission Modes (Data Flow) Basic Networking Devices Integrate Services Digital Network (ISDN)


OSI Model TCP/IP Model

Physical Layer

Digital Transmission Analog Transmission Transmission Media Switching

Data Link Layer

Error detection and Error correction Data Link Control Multiple Access Aloha

Network Layer

Network Layer - Logical Address Address Mapping Unicast Routing Protocol

Transport Layer

Process to Process Delivery User Datagram Protocol Transmission Control Protocol Stream Control Transmission Protocol Session Layer and Presentation Layer

Application Layer

Domain Name System Application Protocol E-mail Cryptography


Classes of Routing Protocols Classification of Routing Algorithms Controlled Access Protocols in Computer Networks Differences between IPv4 and IPv6 Fixed and Flooding Routing Algorithms Advantages and Disadvantages of Fibre Optics Cable APIPA Difference between Active and Passive FTP Fiber Optics and its Types Method of Joining and Fusion of Fiber Optic Cable Define Framing in Computer Network Disadvantages of Computer Network Mesh Topology Diagram in Computer Network Ring Topology in Computer Network Star Topology in Computer Networks 4G Mobile Communication Technology Advantages and Disadvantages of LAN Advantages and Disadvantages of MAN Advantages and Disadvantages of WAN Application Layer in OSI Model Cyclic Redundancy Check Example Data link layer in OSI model Difference between Transport and Network Layer Hamming Code Example Network Layer in OSI Model Session Layer in OSI Model Transport Layer in OSI Model Two Port Network in Computer Networks Uses of Computer Networks What is Computer Network What is Framing in a Computer Network Advantages and Disadvantages of Bus Topology Difference between Star Topology and Bus Topology Subnetting in Computer Network Subnetting Questions and Answers What is Bus Topology What is Network Topology and Types in Computer Networks Access Control in Networking Basic Characteristics of Computer Network Benefits of SOCKS5 Proxy in Computer Networks Computer Network viva Questions Difference between BOOTP and RARP Difference Between Network Topologies and Network Protocols Difference between NFC and RFID Difference Between Point-to-Point Link and star Topology Network Differences Between MSS and MTU Differences Between Trunk Port and Access Port Different Modes of Communication in Computer Networks MIME Protocol in Computer Networks Modes of Communication in Computer Networks Network Attack in Computer Network Port Address in Networking Simplest Protocol in Computer Network Sliding Window Protocol in Computer Network Stop And Wait Protocol in Computer Networks TCP 3-Way Handshake Process in Computer Networks What is a Proxy Server What is APPN What is ICMP Protocol What is Point-to-Point Protocol What is Port Address in Networking What is the HDLC Protocol What is VRRP Protocol Difference Between Analog and Digital Signals Difference Between Hub and Repeater Difference between Repeater and Switch Difference Between Transparent Bridge and Source Routing Bridge Source Routing Bridge in Computer Networks Transparent Bridge in Computer Networks Transport Protocol in Computer Networks Types of CSMA in Computer Networks What is Wired and Wireless Networking

Types of Computer Network: LAN, MAN, WAN and PAN

PAN: Personal Area Network

PAN stands for Personal Area Network. It is designed for a very short distance (1 to10 m), such as a single room. This type of network can also be connected wirelessly to the Internet. The best example of PAN Networks is a Mobile hotspot and Bluetooth. The figure is shown below.

PAN: Personal Area Network

Advantages of PAN Network

  1. It reduces hardware costs.
  2. It connects the devices very quickly.
  3. It is very secure.

Disadvantages of PAN Network

  1. In PAN Network, Transmission speed is very slow to moderate.
  2. PAN networks have a limited range.

LAN: Local Area Network

LAN stands for Local Area Network. LAN is a privately-owned network. It is designed for a small range of areas such as buildings, offices, and factories. LANs are widely used to share resources like printers, data, etc. It's simple to design and solve problems. The figure is shown below.

LAN: Local Area Network

Workstations and personal computers are connected via LANs. It can use different types of topologies, such as Star, Tree, Bus, Ring, etc.

Advantages of LAN Network

  1. It provides higher security.
  2. It is cost efficient.
  3. It is easily transferred to data and messages.
  4. It provides high data transfer rates.

Disadvantages of LAN Network

  1. The Power must be ON to make the LAN work efficient.
  2. Security is not always 100% ensured.
  3. It is more time consuming to set up the network.

MAN: Metropolitan Area Network

MAN stands for Metropolitan Area Network. MAN is an extended version of the LAN network. It is designed for extending over the geographic area (typically a city or towns). This type of network is larger than the LAN network and smaller than the WAN network. It uses similar technology as LAN. The single private company and public company is mainly operating the MAN Network. The best example of MAN networks is the Television network. The figure is shown below.

MAN: Metropolitan Area Network

Advantages of MAN Network

  1. MAN Network covers a larger range of areas than the LAN network, such as an entire city or town.
  2. The double bus used in MAN network helps it possible to transmit data in both directions together.

Disadvantages of MAN Network

  1. More cable required for a set up a MAN network from one location to another.
  2. It isn't very easy to manage the system securely.

WAN: Wide Area Network

WAN stands for Wide Area Network. It is designed for extending over the geographical area, such as cover the states or countries. It is very complex to design and maintain. The medium of communication used by the WAN is a PSTN (Public Switched Telephone Network) or satellite link. The best example of WAN networks is the Internet. The figure is shown below.

WAN: Wide Area Network

Advantages of WAN Network

  1. It covers a larger geographical area, such as countries.
  2. It is used to send rapid messages at anywhere and anytime.
  3. It allows you to connect workstations to share resources and software.

Disadvantages of WAN Network

  1. It is costly.
  2. Low security (Unsafe from hackers or other outside threats)
  3. Manage and Maintain the WAN network is a very complex task.
  4. It requires investing in a good firewall system to avoid interference from hackers.