Cardinality describes the number of possible occurrences in one table that are associated with a single occurrence in a related table.

Scenario: The Firefox browser is being used to display a web page with a video but the video does not play. Read the following code snippet and select the reason for the incorrect display from the choices below.

``` ``` a. The controls attribute should be controls=”yes” b. There are too many source elements. c. The file extension .ogg is incorrect. d. The MIME type values are incorrect.

The technique that allows multiple users to simultaneously access the same data streams without duplication of data across the Internet is called:

a. homing b. streaming c. packet-compression d. interleaving e. multicasting