A subnet is a physical segment of a TCP / IP network that uses IP addresses with a common network identifier. To subdivide a network into multiple subnets, you must use a different network ID for each segment. Unique subnet IDs are created by splitting the host ID into two groups of bits. The first of them serves to identify a segment of the interconnected network, the second – to identify a specific node. This mechanism is called subnet working. It is not necessary on an isolated network (i.e., not connected to the Internet).

Dropbox is the most famous cloud storage tool. The program is safe, convenient, but new products have appeared on the market offering more extensive functionality. If you are considering deleting Dropbox, it is important to understand the process and implications. If you have a paid Dropbox subscription but no longer wish to use their services, you can cancel your subscription. Instead, you will receive a free service - 2 GB storage, and thus you will no longer be charged. When you decide to uninstall Dropbox, the program will erase all your data stored on network servers, personal information, and accounts - it takes about 30 days. After that, you will not be able to enter your account. Dropbox will also no longer sync all your data and disconnect your device from the program. If you used shared folders for work or study, the program would not delete them - other users will still be able to see them. Also, the program will not change and delete files that are stored on your device.