Final answer:
A CD that can be read but not burned is known as a Read-Only CD, or CD-ROM. These CDs have pre-recorded data that cannot be altered or added to by the user.
Step-by-step explanation:
The type of CD technology that allows data to be read but not burned is referred to as a Read-Only CD or CD-ROM (Compact Disc-Read Only Memory).
These CDs come with data pre-recorded on them, and the information is permanently etched into the CD by precise laser-created pits during the manufacturing process.
Users can access the data through CD players or computer drives which use a laser beam to read the variations in reflections from the pits, but cannot alter or add to the data on the disc.
This is in contrast to recordable CDs (CD-R) or rewritable CDs (CD-RW), where users have the capability to write data to the disc.