Which of the following BEST describes the principle difference between server RAM and workstation RAM?
A.
Server RAM can transfer data on both the leading and falling edges of each clock cycle while Workstation RAM can transfer data only on the leading edge of each clock cycle.
B.
Server RAM requires Error Checking and Correction (ECC) while Workstation RAM does not.
C.
Server RAM consumers more power than Workstation RAM.
D.
Server RAM has 240 pins while workstation RAM usually has 184 pins.
Explanation:
Server RAM requires Error Checking and Correction (ECC) to prevent memory errors.
Error Checking and Correction (ECC) uses a parity memory scheme to detect and fix memory errors.
Incorrect
Answers:
A: DDR SDRAM as well as DDR-2 SDRAM can transfer data on both the leading and falling edges of each clock cycle and both Servers and Workstations can have DDR SDRAM or DDR-2 SDRAM.
C: DDR SDRAM consumers more power than DDR-2 SDRAM because it uses more voltage than DDR-2 SDRAM. However, both Servers and Workstations can have either DDR-2 SDRAM or DDR SDRAM.
D: DDR-2 SDRAM is not compatible with DDR SDRAM because DDR-2 SDRAM uses 240 pins per module while DDR SDRAM uses 184 pins. However, both Servers and Workstations can have either 240 pins DDR-2 SDRAM or 184-pin DDR SDRAM.
References:
Charles J. Brooks, Server+ Certification Exam Cram 2 (Exam SK0-002), QUE Publishing, Indianapolis, 2006, pp. 89-95.