Memory

Question 1

Why is DDR2 Ram faster than DDR Ram?

Answer 1

The input/output speed is faster.

Question 2

What is dual channel memory?

Answer 2

It describes motherboard technology that doubles data throughput from Ram to the MCC.

Installed in pairs or trios for maximum data throughput.

Question 3

How do you utilize Ram that uses Dual-Channel-Architecture?

Answer 3

Dual-Channel DDR requires two identical sticks of DDR, and they must snap into two paired slots.

Question 4

What is buffered RAM?

Answer 4

Ram with small registers installed on memory that acts as a buffer between the DIMM and the MCC

Question 5

What’s ECC?

Answer 5

It’s RAM that fixes errors as they occur. Slower than non-ECC

Question 6

Why is SDRAM better than DRAM?

Answer 6

It is synchronized with the system bus.

Question 7

What is PROM?

Answer 7

Programmable read only memory.

Written once, cannot be changed.

Question 8

What is EPROM?

Answer 8

Erasable PROM

Can be erased and re-used.

Question 9

What is EEPROM?

Answer 9

Electrically Erasable PROM (Flash memory, SSD)

Question 10

What is the CMOS?

Answer 10

A separate memory chip that stores the BIOS settings

Kept charge by the CMOS battery.

Question 11

What is Firmware?

Answer 11

Firmware is a software program or set of instructions programmed on a hardware device. It provides the necessary instructions for how the device communicates with the other computer hardware

Firmware is typically stored in the flash ROM of a hardware device.

Question 12

What is Flash Memory?

Answer 12

Memory that retains data in absence of a power supply.

Question 13

What is the system ROM?

Answer 13

It’s Flash ROM (ROM you can update), it enables your CPU to talk to basic hardware of your PC. It holds the BIOS for HDD’s, Display Devices, USB, etc..

Question 14

What is ROM?

Answer 14

Read Only Memory.

It stores programs for your CPU to communicate with hardware.

Can’t be changed or erased.

Question 15

What is DRAM?

Answer 15

Dynamic Random Access Memory.

It’s used as the main system memory. It is VOLATILE MEMORY that needs a constant refresh or it loses it’s data.

• Slower than SRAM
• Less expensive
• Used as primary storage (RAM, DIMM’s)

Question 16

What is SRAM?

Answer 16

Static RAM.

VOLATILE

Very fast and very expensive.
Used often in CPU caches (L1, L2, L3)

Question 17

What’s “Flashing the ROM”?

Answer 17

Upgrading your BIOS to support new technology.

Question 18

How many levels of cache are there? What do they do?

Answer 18

1. 3 levels.
2. Level 1- Fastest cache. Integrated on or close to the CPU

Level 2- Secondary data.

Level 3- Data shared across multiple cores.

Question 19

What is Virtual Memory? What is it’s size?

Answer 19

Computers use a portion of the Hard Drive as an extension of the RAM called a page-file.

It is 1.5 times the amount of RAM you have installed.

Question 20

What is RAM?

Answer 20

Random Access Memory

It is physical hardware in a computer that temporarily stores data. It is volatile memory.

It transfers and stores data to and from the CPU

Question 21

What is cache? What kind of RAM is it?

Answer 21

Smaller memory stored on the CPU.

It is Static Random Access Memory (SRAM). Very fast memory.

Question 22

What is Parity?

Answer 22

Ram that detects errors but does not fix them real time. Adds an additional parity bit.

Question 23

What is the term for the delay in the RAM’s response to a request from the MCC?

Answer 23

Latency.

Question 24

Which of the memory types listed below are designed to store permanent data that cannot be changed?

1. RAM
2. EPROM
3. ROM
4. PROM
5. EEPROM

Answer 24

PROM

ROM

Question 25

What type of memory is flash memory?

Answer 25

EEPROM electrically erasable programmable read-only memory

Question 26

What is VRAM?

Answer 26

A special-purpose memory type used by graphics controllers.

Question 27

What is the type of media used as a secondary system storage in tablets and mobile phones?

Answer 27

eMMC