TJBL(WAN)-Komponen dan Peralatan WAN | Wide Area Network (WAN)

Summary

This video explains essential components and equipment used in Wide Area Networks (WAN), covering both the functional and practical aspects of network building. It introduces key devices like repeaters, hubs, switches, routers, and bridges, detailing their roles in strengthening, directing, and routing network signals. Additionally, it explores media transmission options, such as UTP and fiber optic cables, and equipment like antennas, access points, and multiplexer devices for efficient data transfer. The tutorial is aimed at helping students understand how these elements work together to form robust and scalable WAN infrastructures.

Takeaways

• 😀 Repeaters are devices that amplify weak electrical signals in a network to extend the transmission distance. They work at the physical layer and don't have any intelligence to determine the final destination of the signal.
• 😀 Hubs (or multiport repeaters) also amplify signals, but they forward the signal to all connected devices. They operate in a single collision domain, meaning only one device can send or receive data at a time.
• 😀 Bridges divide a network into smaller segments to reduce network congestion. They work at the data link layer and use a table to forward data only to the destination device, improving overall efficiency.
• 😀 Switches are similar to bridges but with more ports. They create separate collision domains for each connected device, allowing simultaneous communication without interference.
• 😀 Routers are intelligent devices that operate at the network layer. They forward data packets between different networks based on IP addresses, and they are commonly used in WANs to connect local networks over long distances.
• 😀 Routing switches (Layer 3 switches) combine the features of both switches and routers. They are capable of routing data between different networks while maintaining the high-speed switching capabilities of regular switches.
• 😀 ATM (Asynchronous Transfer Mode) switches provide high-speed data transfer and are often used for high-demand network communication, while KSUs (Channel Service Units) handle digital data transmission over telephone lines.
• 😀 Multiplexers allow multiple signals to be transmitted over a single transmission medium, optimizing bandwidth usage by sending data, voice, or video signals simultaneously.
• 😀 Transmission media like coaxial cables (thinnet and thicknet) are essential for connecting devices in a network. Thinnet is cheaper and easier to install, while thicknet can support longer distances and more devices, though it's more expensive.
• 😀 Components like antennas (e.g., Grid Antennas) and access points (e.g., Radio SNOW) are crucial for wireless networks, helping to direct and strengthen radio signals for point-to-point or multipoint communication in WAN setups.

Q & A

What is the purpose of a repeater in a WAN?

A repeater is used to amplify weak signals over long distances, ensuring that the signals can be transmitted without losing quality. It works at the physical layer and does not have the ability to determine the destination of the signals.

How does a hub (HAP) differ from a repeater?

A hub, or HAP, is essentially a multi-port repeater. It amplifies the signal it receives on one port and sends it to all other ports. Unlike a repeater, which only amplifies signals over long distances, a hub forwards signals to multiple devices simultaneously but lacks intelligence to direct data to specific devices.

What is the function of a bridge in a network?

A bridge divides a large network into smaller segments to reduce network congestion. It operates at the data link layer and uses MAC addresses to forward data to the appropriate segment. This helps in managing network traffic and avoiding collisions.

What advantages does a switch offer over a hub?

A switch provides more efficient data forwarding than a hub by offering dedicated paths for each connected device, reducing network collisions. It works at the data link layer, unlike a hub, which broadcasts data to all devices. This makes switches ideal for handling larger networks.

What role does a router play in a WAN?

A router is responsible for forwarding data packets between different networks based on logical IP addresses. It works at the network layer, ensuring that data is directed to the correct destination across multiple networks, making it essential for WANs.

What is a routing switch (Layer 3 switch), and how does it differ from a regular switch?

A routing switch combines the functionalities of both a switch and a router. It works at both the data link and network layers, allowing it to forward data based on both MAC and IP addresses. Unlike regular switches, which only handle data within a single network, routing switches can route data between different networks.

What is the function of an ATM switch in a WAN?

An ATM (Asynchronous Transfer Mode) switch is used for high-speed data transfer. It operates in networks that require fast, reliable communication, such as large WANs. ATM switches enable the efficient transfer of data across different network segments.

How does a modem work in a WAN setup?

A modem converts digital signals from a computer into analog signals that can be transmitted over telephone lines, and vice versa. It allows digital devices to communicate over analog networks, making it an essential component for older WAN connections, especially those using dial-up.

What is the purpose of a multiplexer in a WAN?

A multiplexer combines multiple data signals into a single signal for transmission over a single communication line. It allows multiple types of data, such as voice, video, and text, to be transmitted simultaneously, optimizing the use of available bandwidth.

What types of cables are commonly used in WANs, and what are their differences?

Ethernet cables are the most commonly used in WANs. ThinNet (10Base2) is cheaper and easier to install but supports fewer devices and shorter distances. ThickNet (10Base5) can support more devices and longer distances but is more expensive and harder to install.

What is the role of an access point in a wireless WAN setup?

An access point acts as a central device in a wireless network, allowing data to be transmitted over radio waves. It connects wireless devices to a wired network and manages data traffic between the two. Access points can significantly expand the range and coverage of a wireless network.