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September 14, 2012



What does the CAS latency represent?

A) The delay in reading data from the hard drive

B) The time it takes to receive data from memory after making the request

C) The time delay from a power-off state until a login prompt is shown

D) The network delay between a workstation and a server, in milliseconds

E) The delay for you to remember the new password you changed yesterday


The answer: B) The time it takes to receive data from memory after making the request

The Column Address Strobe (CAS) Latency refers to the delay between the time that the memory controller requests some data from RAM and the moment the data is available on the memory module’s output pins. In SDRAM, the CL is specified in clock cycles. The value refers to the time delay, so a CL of 2 is faster than a CL of 3.

Want to know more? Watch “An Overview of Memory.”

There are many different memory types and memory technologies, and in this video you’ll learn about memory parity, ECC memory, memory sides, and memory channels.

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Category: CompTIA A+ Pop Quizzes

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