Before installing additional memory, you need to verify compatibility between the memory you want to add and current memory. Which of the following should be the same? Choose all correct options.

A.
Brand

B.
Type

C.
Speed

D.
All of the above

Explanation:
It is recommended that you use the same brand, type and speed of memory for all interrelated servers throughout the system.
References:
Charles J. Brooks, Server+ Certification Exam Cram 2 (Exam SK0-002), QUE Publishing, Indianapolis, 2006, pp. 390-391.