PDK1. PENGENALAN JARINGAN KOMPUTER

Summary

This lecture introduces computer networks, explaining their concept, history, benefits, and types based on geographical location, function, data distribution, and transmission media. It highlights the importance of networks for sharing resources, efficiency, and communication. The instructor also discusses the evolution of computer networks, from batch processing to the development of TCP/IP, and the emergence of wireless technology. The lecture concludes by emphasizing the role of computer networks in facilitating modern communication and data management.

Takeaways

• 🌐 **Computer Networks Defined**: A computer network is an interconnection of devices enabling data exchange, including computers, electronic devices, or virtual machines.
• 🔌 **Connection Methods**: Networks can connect devices using either wired or wireless media, like Ethernet cables or Wi-Fi signals.
• 🏢 **Components of a Network**: Key components include routers, firewalls, and devices with IP addresses, all interconnected to facilitate communication.
• 📈 **Importance of Networks**: Networks are crucial for resource sharing, efficiency in data management, and enabling device communication both locally and globally.
• 📚 **Historical Development**: The concept originated in the U.S., evolving from batch processing to time-sharing systems, and eventually to distributed processing with the advent of TCP/IP.
• 🌟 **TCP/IP Protocol**: This protocol revolutionized networking by allowing global device connectivity, forming the backbone of today's internet.
• 💼 **Benefits for Organizations**: Networks enable resource sharing, fast information flow, improved communication, data security, and data integration, leading to operational efficiency.
• 🌍 **Types of Networks by Geography**: LANs (Local Area Networks) cover limited areas like buildings, MANs (Metropolitan Area Networks) span larger areas like cities, and WANs (Wide Area Networks) cover broad regions or countries.
• 🌐 **The Internet**: A global network of interconnected computers using TCP/IP protocols, serving worldwide user needs.
• 🖥️ **Network Models by Function**: Client-server models have dedicated servers managing resources, while peer-to-peer networks share resources among all connected computers without a central server.
• 📡 **Networks by Data Distribution**: Centralized networks rely on a single server for data management, whereas distributed networks have multiple servers sharing the data management load.

Q & A

What is the definition of a computer network?

A computer network is an interconnection of computers and electronic devices that allows them to exchange data and share resources such as files, printers, and other peripherals.

What are the benefits of computer networks?

Computer networks provide benefits such as resource sharing, efficiency in managing and accessing data, communication between devices, and security of data access within organizations.

How do computer networks work?

Computer networks work by enabling devices to communicate with each other through media transmission like cables or Wi-Fi signals, with the help of components like routers and firewalls.

What is the history behind the development of computer networks?

The concept of computer networks originated in the United States at Bell Labs and was further developed at Harvard University with the introduction of batch processing. It evolved through time-sharing systems and distribution processing, eventually leading to the development of TCP/IP protocols that form the basis of the modern internet.

What are the different types of computer networks based on geographical location?

Computer networks can be classified into Local Area Networks (LAN), Metropolitan Area Networks (MAN), and Wide Area Networks (WAN) based on their geographical coverage.

What is a Local Area Network (LAN) and its typical usage?

A Local Area Network (LAN) is a network that covers a small area such as a room, building, or campus. It is typically used to connect devices within a limited area like computers, laptops, printers, and other peripherals within an organization.

What is the difference between a LAN and a WAN?

A LAN covers a smaller geographical area like a building or campus, while a WAN covers a larger area such as a country or even internationally. LANs are usually privately owned, whereas WANs can be publicly accessible.

What are the advantages of using a client-server network model?

The client-server model provides advantages such as enhanced security, centralized management, easier administration, centralized data storage and backup, and improved performance through load distribution among servers.

What is a peer-to-peer network and how does it differ from a client-server network?

A peer-to-peer network is a model where each computer can act as both a client and a server, sharing resources directly without a centralized server. It differs from a client-server network in that there is no central server managing resources and communication among clients.

What are the key components of a computer network?

Key components of a computer network include devices with IP addresses, media transmission like cables or wireless signals, routers, firewalls, and other networking hardware and software.

How do wireless networks compare to wired networks in terms of stability and flexibility?

Wireless networks offer greater mobility and easier installation but can be more susceptible to signal interference. Wired networks provide more stability and higher data transfer speeds but require physical installation of cables.