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IEEE 802.11 | What is IEEE 802.11 - (BCA / B.Tech)

IEEE 802.11 in Hindi | What is IEEE 802.11

IEEE 802.11 is a standard for wireless networking, which defines Wi-Fi technology. This standard defines the requirements for the data link layer and the physical layer, which are used for a wireless local area network (WLAN).
The IEEE (Institute of Electrical and Electronics Engineers) first recognized it in 1997, and since then many amendments and updates have been made to it.

The IEEE 802.11 standard has made wireless networking widely acceptable and useful. Its various versions have made better speed, range, and security possible. With Wi-Fi technology, we can now enjoy internet and data services on the go in today's digital world.
With the development of this standard, we expect even faster and more secure wireless networking in the future.

History of IEEE 802.11 in Hindi | History of IEEE 802.11:

The IEEE 802.11 standard began in the early 1990s, when the need for wireless networking was felt. The first version, 802.11-1997, provided a data transfer speed of 1 and 2 Mbps in the 2.4 GHz frequency band. After this, several new standards were introduced with various amendments, which provide higher speed and better performance.

Versions of IEEE 802.11 in Hindi | Main versions of IEEE 802.11:

Frequency: 2.4 GHz
Maximum data transfer speed: 11 Mbps
This version was one of the first major successful standards of 802.11 and was widely adopted.
IEEE 802.11a (1999)

Frequency: 5 GHz
Maximum data transfer speed: 54 Mbps
802.11a had better speed and less interference, but it provided less range compared to the 2.4 GHz band.
IEEE 802.11g (2003)

Frequency: 2.4 GHz
Maximum data transfer speed: 54 Mbps
This combines the features of 802.11b and 802.11a, which made it popular.
IEEE 802.11n (2009)

Frequency: 2.4 GHz and 5 GHz
Maximum data transfer speed: 600 Mbps (using MIMO technology)
This standard uses MIMO (Multiple Input Multiple Output) technology, which improves data transfer speed and range.
IEEE 802.11ac (2013)

Frequency: 5 GHz
Maximum data transfer speed: up to 1.3 Gbps
This standard is even faster than 802.11n and supports multi-user MIMO technology.
IEEE 802.11ax (Wi-Fi 6) (2019)

Frequency: 2.4 GHz and 5 GHz
Maximum data transfer speed: up to 9.6 Gbps
This standard provides better performance and efficiency for many devices, especially in high-density areas.

Features of IEEE 802.11 in Hindi | Features of IEEE 802.11:

Physical Layer and Data Link Layer: The IEEE 802.11 standard details the requirements for the physical layer, such as data transmission technology and frequency bands, and in the data link layer, frame structure, protocols, and error detection.

Security: The 802.11 standard also defines security. Initially, there was WEP (Wired Equivalent Privacy) security, but it proved to be very weak. After that, WPA (Wi-Fi Protected Access) and WPA2 were introduced, which were more secure. WPA3 is now the latest security standard.

Range and Coverage: The 802.11 standard uses different frequency bands (such as 2.4 GHz and 5 GHz). The 2.4 GHz band provides more range, while the 5 GHz band provides higher speed but has less range.

Multiple Connections: This standard allows multiple devices to be connected to a network at the same time. Technologies like MIMO and MU-MIMO help to effectively connect more devices at the same time.

Automated Connectivity: The IEEE 802.11 standard provides various protocols to easily connect devices, such as Wi-Fi Protected Setup (WPS), which allows users to join a network without a complex setup.

Applications of IEEE 802.11

Personal use: Internet browsing, gaming, and streaming on devices such as smartphones, laptops, and tablets.
In offices: Wi-Fi is used to connect office equipment and printers.
Education: To provide students with access to internet services in schools and colleges.
Smart home: A Wi-Fi network is used to connect smart home devices.

IEEE 802.11 | What is IEEE 802.11

IEEE 802.11 in Hindi | What is IEEE 802.11

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