Nowdays the main problem is network sharing (i.e in public Wi-fi hotspots and College WLAN , LAN) is the reduction of speed.

When the number of users increase, your internet speed gets shared. That's really s**t. Say your downlink in 100Kbps and when 10 people connect to the network the downlink becomes 10Kbps.

How to increase your speed:
But there is a solution for this, if it's urgent for you use the internet and you're need of speed, cut the internet for others when you're connected in the network. This can be done by a simple software called netcut developed by arcai.

How to Defend yourself:
Netcut has a inbuilt defender when switched, which makes you to protect yourself from others attack. Similarly u cannot attack a system protected by netcut.


Procedure:
Don't select the first two IP's because it's related with your system. Click on the IP on to which you wish to disconnect the internet service and then Click Cutoff (Ready).

Click Here to download the software.

Other Versions:
It is also available for android check it out here.

Note: 
You may be caught by a XArp program. Net Cut doesn't inculcate personal uses. You can use this under emergency conditions when you're really in need of internet with higher speeds (Time: 20-30min).