Wireless Network (Wireless LAN)

A Local Area Network (LAN) that facilitates communication between computers and devices via radio waves rather than through physical cables.

Definition

A wireless network or wireless Local Area Network (WLAN) is a type of LAN where interconnected devices communicate through radio waves instead of cabling. WLANs allow for greater mobility and flexibility in network configurations, eliminating the physical limitations imposed by cables.


Examples

Example 1: Wi-Fi Network

Most modern homes and offices employ Wi-Fi technology to form wireless networks. Devices such as smartphones, laptops, and printers connect to a router that communicates wirelessly to allow internet access and file sharing without the need for cables.

Example 2: Office WLAN

In a corporate setting, a wireless network can span entire buildings, enabling employees to effortlessly connect their devices to the company’s resources and the internet without being restricted to specific desks.

Example 3: Public Hotspots

Public places like cafes, airports, and hotels often provide wireless networks (hotspots) to offer internet access to customers and travelers without needing any physical connection.


Frequently Asked Questions

What is the difference between WLAN and a wired LAN?

A WLAN uses radio waves for device communication, eliminating the need for cables. In contrast, a wired LAN relies on physical cables to connect devices.

How secure is a wireless network compared to a wired network?

Wireless networks can be less secure than wired networks due to potential vulnerabilities to unauthorized access. However, employing robust encryption methods like WPA3 can significantly enhance security.

Can a WLAN support the same number of devices as a wired LAN?

Yes, a WLAN can support many devices, but performance might degrade with a high number of concurrent connections due to shared bandwidth.

What equipment do I need to set up a wireless network?

To set up a wireless network, you’ll need a wireless router or access point, wireless-enabled devices, and appropriate security settings.


Bluetooth

Bluetooth is a standard for short-range wireless communication between devices, typically within a distance of roughly 10 meters. It is commonly used for connecting peripherals such as keyboards, mice, and headphones.

Wi-Fi

Wi-Fi is a technology that allows devices to connect to a network wirelessly using radio waves. It is the most prevalent means of forming WLANs.

Wireless Communication

Wireless communication encompasses various technologies that transmit data over the air (through electromagnetic waves) rather than through wired connections.


Online References

  1. Wi-Fi Alliance - The global association that promotes Wi-Fi technology. Wi-Fi Alliance

  2. IEEE 802.11 - The set of standards governing WLAN communication, popularly known as Wi-Fi. IEEE 802.11

  3. Bluetooth - Information about Bluetooth standards and technologies. Bluetooth


Suggested Books for Further Studies

  1. “Wireless Communications: Principles and Practice” by Theodore S. Rappaport
  2. “802.11 Wireless Networks: The Definitive Guide” by Matthew S. Gast
  3. “Wi-Fi: Concepts and Applications” by Praphul Chandra & Geoffrey T. Smith

Fundamentals of Wireless Networks: Communications Basics Quiz

### What is a primary component needed to set up a wireless network? - [ ] Ethernet cables - [ ] Fiber optic cables - [x] Wireless router - [ ] Coaxial cables > **Explanation:** A wireless router is essential for setting up a wireless network as it allows devices to connect by transmitting data over radio waves. ### Which of the following technologies is associated with short-range wireless communication? - [ ] Fiber optics - [ ] Ethernet - [ ] RF (Radio Frequency) - [x] Bluetooth > **Explanation:** Bluetooth technology is associated with short-range wireless communication, typically up to 10 meters. ### What is one significant advantage of using a wireless network over a wired network? - [ ] Higher security - [ ] Higher speed - [x] Increased mobility - [ ] Lower cost > **Explanation:** One significant advantage of wireless networks is the increased mobility they offer by eliminating the constraints of physical cables. ### Which security protocol is recommended for enhancing the security of a WLAN? - [ ] WEP - [x] WPA3 - [ ] SSID - [ ] MAC address filter > **Explanation:** WPA3 is the most recent security protocol recommended for enhancing the security of WLANs. ### Interference in a wireless network is least likely to happen on which frequency band? - [ ] 2.4 GHz - [x] 5 GHz - [ ] 3.5 GHz - [ ] 1.8 GHz > **Explanation:** The 5 GHz frequency band is less prone to interference compared to the 2.4 GHz band because it has more channels and typically faces less congestion. ### The maximum range of a Wi-Fi network is generally within which of the following ranges? - [ ] 500 meters - [x] 100 meters - [ ] 10 kilometers - [ ] 1 kilometer > **Explanation:** The maximum range of a typical Wi-Fi network is generally around 100 meters under optimal conditions. ### What does the acronym "WLAN" stand for? - [ ] Wired Local Area Network - [ ] Wireless Long Area Network - [x] Wireless Local Area Network - [ ] Wired Logical Access Network > **Explanation:** WLAN stands for Wireless Local Area Network. ### When comparing Wi-Fi and Bluetooth, which technology typically allows for greater range? - [ ] Bluetooth - [x] Wi-Fi - [ ] Both have the same range - [ ] It depends on the device > **Explanation:** Wi-Fi typically allows for a greater range compared to Bluetooth. ### What is a critical factor that affects the performance of a wireless network? - [ ] Color of the router - [ ] Length of Ethernet cables - [x] Signal interference - [ ] Number of antennas > **Explanation:** Signal interference is a critical factor affecting wireless network performance as it can degrade the quality of the wireless signal. ### To enhance the security of a wireless network, it is advised to change which default setting? - [ ] Device manufacturer - [ ] Router color - [x] SSID (Network name) - [ ] Frequency band > **Explanation:** Changing the default SSID (network name) of a wireless network is one of the steps to enhance its security by preventing unauthorized recognition of the network.

Thank you for exploring the intricacies of wireless networks and participating in our communications basics quiz. Continue expanding your understanding and proficiency in this dynamic technological field!


Wednesday, August 7, 2024

Accounting Terms Lexicon

Discover comprehensive accounting definitions and practical insights. Empowering students and professionals with clear and concise explanations for a better understanding of financial terms.