Echo (one-to-all, one-to-one, or one-to-some distribution) is a group communications protocol where authenticated and encrypted information is addressed to members connected to a node. Adaptive Echo, Full Echo, and Half Echo can be chosen as several modes of the encrypted Echo protocol.

What is echo in computer programming?

In computing, echo is a command that outputs the strings that are passed to it as arguments. … It is a command available in various operating system shells and typically used in shell scripts and batch files to output status text to the screen or a computer file, or as a source part of a pipeline.

Where is echocardiogram used?

a quality check and error-control technique for data transferred over a computer network or other communications link, in which the data received is stored and also transmitted back to its point of origin, where it is compared with the original data.