What does DVI stand for?（）

单项选择题（）is a technique used for illumination behind the liquid crystal display that makes LCDs easier to read.

A. Frontlight
B. Backup Power
C. Cathode ray tube
D. Backlight

单项选择题（）enables a computer processor to process two sets of instructions at the same time.

A.Multi-tasking
B.Hyper-threading
C.Hyper-caching
D.Caching

单项选择题（）is commonly performed on CPUs and video cards to allow users to get enhanced performance.

A. Hyperthreading
B. Duplexing
C. Caching
D. Overclocking

单项选择题Which of the following storage devices is not an example of an optical storage device?（）

A. Blu-Ray
B. DVD
C. SSD
D. CD

单项选择题（）are often used to organize and index the information or prices of objects.

A. Object codes
B. Bar codes
C. References
D. Notes