This is entirely up to whoever sets it up, but the rule of thumb is usually 1.5x the amount of physical system memory on the machine. For example:
If you have 2 GiB of RAM, then it's considered good practice to create a swap partition of size 3 GiB.
However, Linux's memory management is much more effective and efficient than Windows, and when you have 2 GiB or more of RAM it's considered optional to set up or use swap space, as your system has plenty of memory in which to work. If you have 4 GiB it may be considered wasteful to create any swap space at all unless your computing needs are very memory-intensive.
A "quota" is a set minimum or maximum of something. In the case of Linux, it usually refers to a user's allotment of disk space. Users can be limited to a certain amount of storage space to prevent them from using all the resources of the drive.
BusyBox is a project that aims to provide a number of common Linux utilities (such as grep,ls,who,passwd,head,uname, and so on) in a single binary. This has the advantage of reducing the amount of space needed to store all these functions. As it is smaller than the standard tool package, it is used in ramdisks and in embedded systems where space is an issue.
Storage can be divided in any number of ways. If you use quotas, you can assign each user a specific amount of space. If you do not use quotas, each user can use as much space as they can, until there is no free space left.
The amount of disk-space taken up by the operation system (OS) can vary considerably. Though MicroSoft Windows takes up a lot of space, there are Linux type OSs that take up very little space. One such that springs to mind is, 'Damn Small Linux' (DSL) 50MB or less, that can boot off a USB flash drive or CD disk.
Recent versions of Ubuntu Linux require about 5GB of space.
There is none. Oh, sure, various filesystems have their limits, but Linux isn't limited to the use of just one filesystem.
That is the "swap partition." It is a dedicated space on the hard disk that fulfills the "swap" feature of virtual memory in Linux.
That depends on whether you are asking whether more people use Windows or Linux or which system supports more users. The maximum number of users in a modern Linux system is 4,294,967,295. Windows doesn't have any specific limit that has been published, but each account takes up a significant amount of space, limiting the number to well below the limit in Linux. As to how many people use them, more people use Windows on their personal computers than Linux.
Yes. To achieve this, you need to shrink the window partition so there is space for the Linux partition on the disk.
is a measure of the amount of matter in a given amount of space
is a measure of the amount of matter in a given amount of space
is a measure of the amount of matter in a given amount of space