AKM Awal

Summary

This video introduces the basics of computer networks, explaining the essential devices like routers, wireless cards, and hubs. It covers different types of network scales such as LAN, MAN, and the Internet, detailing how they connect various regions, from local offices to global communications. The video also dives into network topologies including mesh, bus, ring, and star, discussing their functions and applications. The focus is on the design and components that enable seamless data exchange in both small and large-scale networks.

Takeaways

• 😀 A computer network is a system where two or more computers are connected through transmission media, allowing data, applications, and hardware sharing.
• 😀 A router connects multiple networks and facilitates the exchange of information and data between them.
• 😀 A wireless card allows a computer to connect to other computers using WiFi, eliminating the need for cables in modern laptops.
• 😀 A Hub is a network device used to share data from a server to multiple computers, typically within a building or network.
• 😀 LAN (Local Area Network) is a small-scale network that covers a limited area, like a building or office.
• 😀 MAN (Metropolitan Area Network) is a network connecting several LANs within a larger geographic area, such as a campus or city.
• 😀 The internet is the largest network, connecting networks across cities, countries, and even continents.
• 😀 Network topology defines how computers are connected and can include different physical or logical layouts for efficient data exchange.
• 😀 Mesh topology involves each terminal being directly connected to all other terminals but is impractical due to high cost and complexity.
• 😀 Bus topology connects computers in series using a single central cable and is commonly used in small-scale networks.
• 😀 Star topology connects each device directly to a central device, improving reliability and reducing the impact of network failures.

Q & A

What is a computer network?

A computer network is a system consisting of two or more computers connected to each other through transmission or communication media, enabling them to share data, applications, and even hardware.

What is the role of a router in a network?

A router is a network device that connects two or more networks, allowing them to exchange information and data.

How does a wireless card function in a network?

A wireless card allows a computer to connect to another computer using Wi-Fi, without needing cables. Laptops typically have built-in wireless cards, but desktop PCs may require a separate card.

What is the process involved in using a LAN cable to connect computers?

When connecting computers using a LAN cable, the data flow changes from parallel form to serial form, facilitating communication between the devices.

What is the function of a hub in a network?

A hub is a device that distributes data from a server to other computers in the network. For instance, if there are 10 computers in a building, a hub shares data from the server to all 10 computers.

What are the three main types of network scales?

The three main types of network scales are: 1) LAN (Local Area Network), which covers a small area like a building or office; 2) MAN (Metropolitan Area Network), which connects multiple LANs within a city or campus; and 3) WAN (Wide Area Network), such as the internet, which connects networks over vast distances, including between cities and countries.

What is the difference between LAN and MAN?

A LAN (Local Area Network) covers a small, localized area like a single building or office, while a MAN (Metropolitan Area Network) connects several LANs within a city or a larger geographic region.

What is network topology?

Network topology refers to the arrangement or layout of computers in a network, which can be physical or logical. It determines how the devices are interconnected to facilitate data flow.

What is the advantage and disadvantage of mesh topology?

Mesh topology connects each terminal directly to every other terminal, offering high reliability and redundancy. However, it is costly and impractical for large networks due to the large number of connections needed.

What is bus topology and when is it used?

Bus topology involves connecting multiple computers in a series using a single central cable (the bus). It's typically used in small-scale networks. If one device fails, the entire network can be impacted, which is a key limitation.

How does ring topology help in data transmission?

In ring topology, each device is connected in a circular manner, allowing the signal to flow in one direction. This reduces the risk of data collisions and ensures faster data movement.

What is star topology and why is it considered reliable?

Star topology has each device connected to a central hub. If one cable fails, the other devices remain unaffected, making it a reliable option. It also allows for easier network management and maintenance.