What is WiFi?

See it is not a new technology, or it is not that it has been invented for ages. It was first upgraded in 1997 and it was promoted by an IEEE company. Its first standard was improved in 1997 and its name is 802.11 WiFi. Keeping this name is like this because it has separate protocols for different alarms. At that time, the speed of this wireless technology was 2 megabytes per second. Although its speed was very low at first, there was no such thing as much as that time. Then in 1999, they made two new standards. One is 802.11 and another 802.11b.

The standard was for commercial use and the B Standard was for home use. Standard T was working at 5 GHz on the forecourt and its speed was 54 Mbitubs per second. Standard B was operating at 2.4 GHz and its speed was 11 megabits per second.

What is 2.4 GHz or 5 GHz?

We provide wireless communications services such as your mobile phone, Bluetooth, WiFi, etc. they all work in wireless waves. This radio wave is what we call Electro Magnificent Waves, so there are many algae different bands. And in each band, it is found to get separate power and different ranges. We have allocated some of these bands for such work. Such as remote control car, microwave oven, blue-tooth etc. So in this way, two bands are used very common, one is 2.4 GHz and another 5 GHz. So WiFi, Blue-tooth, etc. all work on this speed.

Now you need to know one thing that the more frequencies will be the more speed. But the signal will be ranged. As much as a signal for high power, the more signal will be lost and the signal will not reach far enough. The fewer frequencies will be less than the speed will be less, but the signal will be far reachable. So there was a lot of speed at 5 GHz standard but the ranges were much lower and B was standard at 2.4 GHz, so its speed was low but this signal was possible for a long distance.

802.11g, 802.11n, 802.11 ac:

After this, another new standard was upgraded in 2003 and named as 802.11g. It combines all the benefits of Standard A and Standard B. It works at 2.4 GHz but it can deliver 54 Mbit / s speed per second. To operate 2.4 GHz, its signal is far reachable and it is available at 54 megabytes of speed per second. This standard became very popular for this facility. And as many as 10-12 years ago, 802.11g used to be used as part of the partition.

In 2009, a new standard was upgraded and named after 802.11n. There were two bands together. And together, it was able to work aloud separately on 2.4 GHz and 5 GHz frequencies. The speed of these two bands could be up to 600 Mb per second. And at the same time, there could be very good ranges. Although 5 GHz Frequency could have a slightly smaller range, there could be very good ranges at 2.4 GHz. And it was a great standard, because of that, we are still using this standard. Up to 90% of the devices, we have been using this standard.

After that, another new standard was discovered three years ago and it was named as 802.11 AC. Another thing to say is that there is no meaning in the name of G, N, AC etc. Many people may think that they are a short form of something. Actually, it’s not at all. These are just different names, diameters. Now 802.11 AC, it works in 5 GHz, and its highest speed is 1.3 Gbps per second. According to theory and in the next day it will be able to deliver 6.9 gigabytes of speed per second. But its range will be low because it works in 5 GHz frequencies.


A detailed discussion of WiFi speed:

There are many conflicts in my mind about the speed related issues, I’m sure about it. You hear that 600 megabits per second or 1.3 gigabits per second, etc. You may know that the data we share with the help of wireless in the computer is in the form of a bit. Bits means zero and one So if there is a sequence of 0001111 in any data stream, then each number is a bit of it. In this situation, if the connection speed is 300 Mb per second, it means that the standard can transfer, process or process 300 million bits per second. That is, you can see that much speed as much as you can to get the maximum number of bits per second.

Now imagine that your room has a 10 megabits per second internet connection. And you bought a 1.3 gigabits per second router. So that router will not increase your internet speed. But if you use a lot of devices at one go or if your home size is too big, then you can get some benefit there. Again, if you want to share files between your portions, you can easily transfer files. But even if the file transfer is 1.3 gigabits per second speed, but not the speed. You can get the highest speed of your router only if your devices are 1.3GHz again and again and support the read speed. But if you think that if your internet speed increases by adding a higher speed router then you are definitely wrong.


Which router do you need to buy?

According to my opinion, if you can buy a WiFi 802.11 AC router today, you will have many advantages. Because the AC router has a dual-band through which you can increase the efficiency of your connectivity. Today, 2.4 Network is a common network, almost everyone uses this frequency. In this situation, if you are in a hazard area, you will always see 30-40 signals. Most of these signals may be 2.4 GHz. If you use 5 GHz here, your signal will be less interrupted and you can enjoy very good speed.

Again, remember that there are 10 separate devices in your house. Some of these devices support 2.4 GHz and some dual bands again support some ACs. So in this situation, you use AC signal in AC device, 2.4 in 2.4 devices and use 5 GHz network with 5 GHz network. As a result, your router will be able to control all the disciplines in the same mastery. Also, see what will happen, think you have 5 divisions and 5 uses 2.4 GHz, but your router will go to each device to set up the connection so that the network speed will be very weak.

That’s why I would say that you must buy a dual-band or AC router for you. You can buy any cheap router, I will not say that you will have to buy 25 thousand rupees router. Nowadays, a good router is available in the market for 2.5 to 5 thousand rupees, so you buy it so that you do not have any problems in the next day.

It is very important to remember another thing here. Suppose you still have a partition that works on Standard G or Standard B, then connect the device using Ethernet cable or LAN cable. Because if there is a low standard partition on the WiFi network, that partition will make the speed of the entire network worse.


Details about WiFi security:

WiFi security breach is no longer a new topic. According to me, maybe you have read 10-12 posts on the internet so that it can be used on the internet by spoiling its security level or by stealing passwords. So let’s start discussing the details of its security.

The first security system that was launched was the name of the WEP (Wired Equivalent Privacy). But the encryption of this security system was only 64 bits. [Read this post to know what the encryption key is and how it works] And this is the word 14-15 years ago today. Anyway, wasting this WEP security system was a lot easier. This security system could be easily damaged by using a Braun Force algorithm on a typical computer. Brute Force algorithm is a system that uses all possible passwords to try to access a system over and over again.

In 2006, its new security system was launched, and its name was WPA (WiFi Protected Access). So it was a bit stronger than the WEP. But then all the router updates were delivered so that they went from WEP  to WPA. Many problems arose during this update, and it was not difficult to destroy security standards at the WPA.

After that, another new security standard was introduced, named after the WPA 2 AES. This is the second version of WPA. And it works on AES. AES is the advanced encryption standard. It is an encryption standard that is tried by a modern computer to try the Braun Force algorithm but it will take about several thousand years.

If you have bought a router 2-3 years back, then there is WPA 2 AES option for the password. And if you have yet to use any other security standard, then by removing it, turn on the WPA 2 (AES). Think it’s impossible to ruin your security.

Another thing, if you are using someone else’s WiFi or using a free network, in this situation, just use a network that you can fully trust. For example, if it is a big company connection such as Google, then use it. When you connect to a network with a network, the network owner can keep a close eye on you, your network activity. It could be your safety. So think before connecting to any network. And if it happens that you have to use the network even though you can not believe it, then VPN should be used in this situation.