Computer Networking course full Video Lecture | Basics of Computer Networking (English) - Basic Technology

Ans. Computer networking refers to the practice of connecting multiple computers and devices together to share resources, exchange data, and communicate with each other. It involves the use of hardware devices, such as routers and switches, along with network protocols to establish and maintain these connections.

Ans. Computer networking offers several benefits, including: - Resource sharing: Networks allow multiple users to access and share resources such as files, printers, and Internet connections. - Improved communication: Networking enables efficient and instant communication through email, instant messaging, and video conferencing. - Centralized management: Networks allow for centralized control and management of resources, making it easier to administer and maintain. - Cost savings: By sharing resources and consolidating hardware, networks can help reduce costs associated with equipment and maintenance. - Enhanced collaboration: Networking facilitates collaboration among users, enabling them to work together on projects and share information easily.

Ans. There are several types of computer networks, including: - Local Area Network (LAN): A LAN is a network that covers a small geographical area, such as an office building or a home. It allows computers and devices in close proximity to communicate and share resources. - Wide Area Network (WAN): A WAN is a network that spans a large geographical area, such as multiple offices in different cities or countries. It connects LANs over long distances using technologies like leased lines or the Internet. - Metropolitan Area Network (MAN): A MAN is a network that covers a city or a metropolitan area. It connects multiple LANs and provides high-speed connectivity. - Wireless Network: A wireless network uses wireless signals, such as Wi-Fi, to connect devices without the need for physical cables. - Campus Area Network (CAN): A CAN is a network that spans multiple buildings within a university campus or corporate campus.

Ans. Network protocols are a set of rules and guidelines that govern the communication between devices on a network. They ensure that data is transferred accurately and efficiently. Some commonly used network protocols include: - Transmission Control Protocol (TCP): TCP is responsible for establishing and maintaining reliable connections between devices. It breaks data into packets, ensures they are delivered in the correct order, and handles error detection and correction. - Internet Protocol (IP): IP is responsible for addressing and routing packets across networks. It assigns unique IP addresses to devices and ensures that data reaches the intended destination. - Ethernet: Ethernet is a widely used protocol for connecting devices within a LAN. It defines the physical and data link layers of the network, specifying how devices communicate and share data. - Hypertext Transfer Protocol (HTTP): HTTP is the protocol used for transferring web pages and other resources over the internet. It defines how web browsers and web servers communicate.

Ans. Securing a computer network is essential to protect data and prevent unauthorized access. Here are some measures to enhance network security: - Use strong passwords: Ensure that passwords for network devices and user accounts are strong and not easily guessable. Use a combination of uppercase and lowercase letters, numbers, and special characters. - Enable firewalls: Firewalls act as a barrier between a network and external threats. Enable firewalls on network devices to filter incoming and outgoing network traffic. - Implement encryption: Use encryption protocols, such as Secure Sockets Layer (SSL) or Transport Layer Security (TLS), to encrypt data transmitted over the network. This prevents unauthorized users from intercepting and reading sensitive information. - Regularly update software: Keep network devices and software up to date with the latest security patches and updates to address any known vulnerabilities. - Use virtual private networks (VPNs): VPNs provide a secure and encrypted connection for remote access to a network. Implement VPNs to protect data transmitted over public networks, such as the internet. - Educate users: Train network users about best practices for network security, such as avoiding suspicious email attachments, using secure Wi-Fi networks, and being cautious of phishing attempts.