What is latency in the context of computer networking?

Latency, in the context of computer networking, refers to the time taken for data packets to travel from the source to the destination across a network. This metric is crucial because it directly affects the performance and user experience of applications that rely on network communication. High latency can result in noticeable delays, which can hinder activities such as online gaming, video conferencing, and real-time data transfers.

Understanding latency is essential for evaluating the responsiveness of a network. For example, in scenarios like streaming video, low latency is desired to ensure smooth playback and quick interactions. Tools and protocols that monitor and manage latency are often used to enhance the efficiency and quality of network communications.

The other choices do not accurately represent the concept of latency. The total amount of data transmitted relates more to bandwidth than to the timing aspect of data travel. The speed of the network connection pertains to how fast data can be sent and received, which is related but distinct from the concept of latency. Lastly, the number of devices connected to a network might influence performance but does not define the time delay experienced when transmitting data.