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Wi-Fi Questions: What Does A/B/G/N Mean & Which Dual/Single Band to Choose?

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I love giving tips and advice on how to properly use tech devices.



Today, almost every modern home has PCs, smartphones, broadband, laptops, and tablets. Of course, the technical word Wi-Fi has become the popular word in internet connectivity. The main benefit that Wi-Fi technology gives is that they let you break out from thin flexible wires. They also allow many different users to use/share one single internet connection. It is used for other purposes like printing documents wirelessly, data transfer between any devices, and many more.

WiFi working

WiFi working

What Exactly Is Wi-Fi?

Wi-Fi stands for Wireless fidelity. It allows gizmos to exchange files with one another using a specific device known as Wi-Fi router, which act as the main hub. Communication or data exchange between devices with Wi-Fi takes place via these router. Depending on the distances, surrounding circumstances like any physical obstacle, walls, other wireless networks in the vicinity, and the router used, the range of wireless-LAN (WLAN) or Wi-Fi is around 20-25 feet indoors.

What Does 5GHz and 2.4Ghz Mean? Which Is Better?

These Wi-Fi or wireless networks like wireless phones exchange and transmits data with the help of radio waves. Any devices that use these radio waves are adjusted to a specific frequency. This allows devices to communicate with each other without any type of interference.


If you find 5GHz on the router, it means that it transmits datum at that specific frequency. 2.4GHz frequency is used by most gizmos to communicate, which results in interference and network jam. Because of this, newer wireless fidelity routers use the 5GHz frequency, which is less crowded compared to 2.4GHz. Though the wireless signal may have high frequency, its range is that much shorter. So the frequency of 2.4GHz can cover a larger zone than 5GHz. In addition, these frequencies cannot pervade solid objects, which limits their stretch.


What Does A/B/G/N Mean in Wi-Fi?

Although Wi-Fi technology came into existence in 1997, the technology has been updated with fresh criteria to meet the growing bandwidth requirements of the latest devices.

About ' a/b ' - Both of these Wi-Fi standards were able to provide very small bandwidth to transmit information, so standards 'a' and 'b' were quite unrealizable to use in today's modern world, so now they are not in existence.

About ' g ' - Wi-Fi standard 'g' is currently the most commonly used standard, which uses 2.4GHz frequency to communicate and transfer data. Standard 'g' is more tolerant to single interference compared to standard 'a/b'. Theoretically, its utmost transfer rate is 54Mbps.

About ' n ' - Standard 'n' is the latest among the Wi-Fi standards, which theoretically transfers data at a speed of 300Mbps. Almost all the latest tablets, laptops, and smartphones supports this Wi-Fi standard. Standard 'n' provides good signal strength compared to other standards because of improved signal intensity. It can use 2.4GHz or 5GHz frequency for transferring, but it is more prone to signal intervention.

Should I Choose Dual Band/Single Band?

Wi-Fi technology has three different type of routers.

Dual or single Band?

Dual or single Band?

#1. Single band - These router does not support 5GHz frequency. They only operate at 2.4GHz frequency.

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#2. Dual band - As the name implies, this router supports both 2.4GHz as well as 5GHz frequency. However, it uses only one band of them at a time like if a router is working at the latest standard 'n' mode. At 5GHz, the other older devices that don't have ability to support standard 'n' cannot/won't connect to it. If the user wants to use 2.4GHz band, then the user has to change the settings of the router or set up another 2.4GHz router.

#3. Simultaneous Dual band router - They provide more speed and flexibility as they can work with both bands at the same instant.

WiFi routers

WiFi routers

Wi-Fi Routers + DSL/ADSL?

ADSL/DSL technology makes use of cable wires to provide broadband connections to many homes such that your broadband connection works when a phone line wire is inserted in DSL or ADSL modem. ADSL/DSL modems do have built-in WI-Fi routers that can be purchased which excludes the requirement of an individual router and modem. But most budget modems with built-in Wi-Fi routers lack various features, so it is recommended to use an individual router and modem since it is cheaper too. Another reason to use a separate Wi-Fi router and modem is that the modems with built-in Wi-Fi routers can get unstable under heavy load because of the heat produced.

Password protection

Password protection

Worried About Security? You Can Protect Your Network

Anyone within Wi-Fi range can use your broadband for free if it is left unprotected. So it is recommended to have your Wi-Fi network password-protected so as to prevent any unknown person from using it.

Hiding your Wi-Fi network name is the best and effective way of protecting a wireless network from strangers. Hiding its name, known as Server Set Identifier (SSID), means that when any unknown person searches for wireless connectivity, the router will not show your Wi-Fi network name, so if no one can see it, no one can access it. If you or any known person wants access, you need to manually enter your Wi-Fi network name every time, which can be complicated. Whereas to stay protected, every Wi-Fi router has tons of safety modes, the extremely common ones are the WEP, WPA2, WPA. Out of these three, the best one is WPA2- WiFi protected access 2. It is secure, progressive, and the most ordinary protocol out there. It is often mandatory.



There are two modes of WPA2 - One is Personal mode (PSK) and other is Enterprise mode. Personal mode allows it's users to set a password within the 8-63 characters. If nothing is determined, then [00000000] is automatically used. For small office and home users where information or data is encrypted, using a 256-bit key before sending- personal mode is used. It is not recommended to use Enterprise mode for small offices and homes as it has advanced security standards.

This article is accurate and true to the best of the author’s knowledge. Content is for informational or entertainment purposes only and does not substitute for personal counsel or professional advice in business, financial, legal, or technical matters.


Captain Sparkle on January 05, 2020:

I didn't read the information but, judging by all the comments, I think if I had read the information it would have helped me a lot:)

Delan on June 09, 2019:

Nice article gave me a nice recap.

Bhawantha on September 02, 2018:


AZHAR MUSA on August 14, 2018:

Good info.

Thank you.

asd on August 13, 2018:

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Roshan Nathees

3 months ago

Thanks a lot.

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20 months ago

Thank you for the info. Helped me alot.

infoshare18 profile imageAUTHOR


5 years ago from India

You're welcome servantiam :-)

Roshan Nathees on May 11, 2018:

Thanks a lot.

Tagman65 on December 03, 2016:

Thank you for the info. Helped me alot.

Gamer on January 25, 2015:

Thank you. It was useful.

Hiren V (author) from India on February 20, 2013:

You're welcome servantiam :-)

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