4. Memory

Question 1

Which type of Random Access Memory (RAM) uses the front-side bus

Answer 1

Double Data Rate (DDR) RAM

Question 2

Which memory component detects both single-bit and multi-bit errors in RAM

Answer 2

Error Correction Code (ECC)

Question 3

Which memory component can only detect single-bit errors in RAM

Answer 3

parity

Question 4

How would you determine which type of RAM is required in a computer

Answer 4

Open the case to verify the type of RAM

Question 5

Which bus determines the amount of RAM that a processor can access

Answer 5

address bus

Question 6

Where is buffered data stored

Answer 6

in the RAM register

Question 7

flashing

Answer 7

a process that allows to rewrite the information stored on the chip instead of having to physically replace the chip

Question 8

memory test

Answer 8

a test that scans memory modules to verify that they’re functioning properly

Question 9

PnP

Answer 9

Plug and Play

Question 10

Plug and Play

Answer 10

A technology that enables the computer to discover and configure new hardware, and mange any hardware conflicts that arise when new hardware is added

Question 11

RAM

Answer 11

Random Access Memory

Question 12

Random Access Memory

Answer 12

A temporary storage space used by the operating system and applications to pass information to the CPU for processing

Question 13

ROM

Answer 13

Read-Only Memory

Question 14

Read-Only Memory

Answer 14

A Memory that saves and stores system data without a constant power source

Question 15

TPM

Answer 15

Trusted Platform Module

Question 16

Trusted Platform Module

Answer 16

An international standard designed to secure hardware by integration encryption keys into devices

Question 17

BIOS

Answer 17

Basic Input / Output System

Question 18

UEFI

Answer 18

Unified Extensible Firmware Interface

Question 19

SIMM

Answer 19

• Single Inline Memory Module
• 32 bit module
• chips on one side of the package
• used on very old computers
• frequently must be installed in matched pairs

Question 20

DIMM

Answer 20

• Dual Inline Memory Module
• 64 bit module
• May have memory chips on one or both sides of the package
• may be installed alone, in pairs, are larger sets (depending on the system)
• Must desktops uses DIMMs

Question 21

SODIMM

Answer 21

• Small Outline Dual Inline Memory Module
• 64 bit
• Small DIMM form factor typically used in laptops and small form factor (SFF) PCs
• Work like a DIMM but about half the size

Question 22

RIMM

Answer 22

• Trademarked term for memory modules used by Rambus memory
• 64 bit
• similar to DIMMS but larger
• Only found on older computers that used Rambus tech.

Question 23

SDRAM

Answer 23

Synchronous Dynamic Random Access Memory

Question 24

DDR Memory

Answer 24

• Double Data Rate Memory
• Allows two pieces of data per clock cycle (both the rise and fall of the clock signal)

Question 25

Buffered DIMMS / FB-DIMMS

Answer 25

Have additional circuits that hold data and manage signals before the information is passed between RAM and the memoru controller

Question 26

Non-Parity Memory

Answer 26

Contains one bit of memory for every bit of data it stores

Question 27

Parity Memory

Answer 27

Have an extra parity checking bit that can be used to verify each byye of data was correctly read or written (older technology that has been replaced by ECC)

Question 28

ECC

Answer 28

A more advance version of parity that uses an algorithm to encode information into a block of bits ECC memory can correct signle bit errors without interrupting operations, and detect multi-bit errors partiy checking would miss ECC casues a slight system slowndown in exchange for increased reliability

Question 29

DDR voltage

Answer 29

* 1.8 V * 2.5 V

Question 30

DDR2 Voltage

Answer 30

* 1.8 V * 1.9 V

Question 31

DDR3 Voltage

Answer 31

* 1.35V * 1.5V * 1.65V *

Question 32

DDR4

Answer 32

* 1.05V * 1.2V * 1.35V

Question 33

9 Steps to install RAM

Answer 33

1. Power Down the computer 2. Detach all external cords from ports on the PC, starting by unplugging the power cable 3. Open the computer's chassis 4. Open the memory support arms on the sides of the memory slots 1. if replacing existing modules, opening the arms will release them from the slot 5. Use firm and even pressure to snap each memory module into the appopriate slot 6. Move the support arms into the locked position 7. Close the chassis 8. Reattach all cords to the ports on the PC, and plug it into the wall outlet 9. Boot the computer and verify the system recognizes the new memory

Question 34

Steps to resolve issues with newly installed memory

Answer 34

1. Verify the modules are seated correctly * Remove and reinstall any new modules 2. Make sure they sit in the socket at the same height as other modules * Verify the support arms locks * If a support arm won't lock into position on the memory module, it is a sign that the modules isn't seated in the slot properly 3. Verify you have installed the modules into the correct memory slots * Your motherboard documentation may list valid memory configurations 4. Try uninstalling the new modules and putting the old ones back in the system. If the problem goes away the old modules * Verify that you purchased the correct memory for your motherboard * Check memory clock speeds in the BIOS to make sure they're compatible with the new modules * Review your motherboard manufacturer's Website for BIOS updates * You might need to flash the BIOS to support the new memory

Question 35

Steps to troubleshoot memory problems

Answer 35

1. Verify your power supply is functioning properly 2. Verify your system is not overheating 3. Clean the memory module edge connectors and slots * Remove the memory modules * Clead the edge connectors with a soft cloth or contact cleaner * Using compressed air or a computer vacumm, remove dust and debris from the slots * Reinsert the clean modules 4. Swap the memory modules one at a time with a module that you know is good 5. If your BIOS/UEFI includes a hardware diagnostic feature, run the memory check 6. Run a thid-party program that checks for problems with computer hardware