For questions about bandwidth where bandwidth is the amount of data that can be carried from one point to another in a given time period (usually a second). This tag is suitable when your question is about network congestion, speed, throughput and of course low bandwidth problems.
Bandwidth is a broad term defined as the bit-rate measure of the transmission capacity over a network communication system. Bandwidth is broadly defined as the capacity of a network. Bandwidth exists in physical or wireless communication networks.
A useful analogy is a pipe with water running through it – the wider the pipe, the greater the volume of water that can flow through it. The same applies to bandwidth strength and the flow of the volume of data.
Network bandwidth is usually expressed in bits per second (bps); modern networks typically have speeds measured in megabits per second (Mbps) or gigabits per second (Gbps).