CIS 275 CH3 EXAM QUESTIONS AND ANSWERS ALREADY PASSED LATEST UPDATE 2025-
2026
Your motherboard supports dual channeling and you currently have two slots populated with
DIMMs; each module holds 2GB. You want to install and additional 4GB of RAM. Will your
system run faster if you install 2 2GB DIMMs or 1 4GB DIMM: Explain - Answers It will run faster
with 2 2GB DIMMs because dual channeling will be used. Dual Channeling is faster than single.
If your motherboard supports ECC DDR3 memory, can you substitute non-ECC DDR3 memory -
Answers Yes, but if non-ECC is installed then error checking will be disabled
Which is faster, CL3 or CL5 memory - Answers CL3
*The lower the latency value, the faster it is.
A motherboard uses dual channeling, but you have four DIMMs available that differ in size. The
motherboard supports all four sizes. Can you install these DIMMs on the board? Will dual
channeling be enabled - Answers The 4 DIMMs can be installed but dual channeling can be
enabled if 2 DIMMs are the same in size, type and speed in the same color slot.
What is the speed in MHz of a DIMM rated at PC4 24000 - Answers DDR4 DIMM at 3000MHz
(24000/8)
A DIMM memory ad displays 5-5-5-15. What is the CAS Latency value of this DIMM? - Answers
CL5 ...the first value is the CAS Latency or CL5
If 2 bits of a byte are in error when the byte is read from ECC memory, can ECC detect the error?
Can it fix the error? - Answers It can be detected but not fixed
*ECC is capable of detecting an errorin 1 bit of a byte and correct it. And it can detect an error in
2 bits of a byte but it cannot correct 2 bits.
In memory ads for DIMMs, you notice DDR 2400 CL15 in one ad and PC4 21300 CL9 in another.
Which ad is advertising the faster memory? - Answers PC4 21300 CL9
*DDR 2400: 2400 x 8 = 19,200 which is less than 21300
What prevents a DDR3 DIMM from being installed in a DDR2 DIMM slot on a motherboard? -
Answers Position of the bottom notch
How many threads can a quad-core processor handle at once? - Answers 8. Four core
processors x 2 threads
, A motherboard has 4 DIMM slots; 3 slots are gray and the 4th black. What type of memory is
this boards designed to use:
DDR4
DDR3
DDR2
All of the above - Answers DDR3
You have just upgraded memory on a computer from 4GB to 8GB by adding 1 DIMM. When you
first turn on the PC, the memory count shows only 4GB. Which of the following is most likely the
source of the problem? What can you do to fix it? - Answers The DIMM is not properly seated
What new parts will you need to replace a failing processor? - Answers Processor, Cooling
Assembly, Thermal Compound
A customer has a system with a Gigabyte B450 Aorus Pro motherboard. He wants to upgrade
the processory from the AMD Athlon X4 950 to the AMD Ryzen 7 2700x. Which of the following
accurately describes this upgrade - Answers The upgrade is possible and will yield a significant
increase in performance
A friend has asked you to help him find out if his computer is capable of overclocking. How can
you direct him? - Answers Show him how to find system summary data in the system info utility
in windows
Show him how to access BIOS/UEFI setup and browse thru the screens
An experience user has installed Oracle VM VirtualBox on her workstation and isattempting to
use it to create a virtual machine (VM). The software causing error message while attempting to
create the VM. What is the most likely problem? - Answers Virtualization was not enabled in the
BIOS/UEFI
What is a GHz - Answers 1 billion cycles per second
What is W a measure of - Answers Rate of energy transfer
*Watts (W) describe the rate of energy transfer, such as when cooling a CPU
Which of these will a mini-ITX motherboard fit into
2026
Your motherboard supports dual channeling and you currently have two slots populated with
DIMMs; each module holds 2GB. You want to install and additional 4GB of RAM. Will your
system run faster if you install 2 2GB DIMMs or 1 4GB DIMM: Explain - Answers It will run faster
with 2 2GB DIMMs because dual channeling will be used. Dual Channeling is faster than single.
If your motherboard supports ECC DDR3 memory, can you substitute non-ECC DDR3 memory -
Answers Yes, but if non-ECC is installed then error checking will be disabled
Which is faster, CL3 or CL5 memory - Answers CL3
*The lower the latency value, the faster it is.
A motherboard uses dual channeling, but you have four DIMMs available that differ in size. The
motherboard supports all four sizes. Can you install these DIMMs on the board? Will dual
channeling be enabled - Answers The 4 DIMMs can be installed but dual channeling can be
enabled if 2 DIMMs are the same in size, type and speed in the same color slot.
What is the speed in MHz of a DIMM rated at PC4 24000 - Answers DDR4 DIMM at 3000MHz
(24000/8)
A DIMM memory ad displays 5-5-5-15. What is the CAS Latency value of this DIMM? - Answers
CL5 ...the first value is the CAS Latency or CL5
If 2 bits of a byte are in error when the byte is read from ECC memory, can ECC detect the error?
Can it fix the error? - Answers It can be detected but not fixed
*ECC is capable of detecting an errorin 1 bit of a byte and correct it. And it can detect an error in
2 bits of a byte but it cannot correct 2 bits.
In memory ads for DIMMs, you notice DDR 2400 CL15 in one ad and PC4 21300 CL9 in another.
Which ad is advertising the faster memory? - Answers PC4 21300 CL9
*DDR 2400: 2400 x 8 = 19,200 which is less than 21300
What prevents a DDR3 DIMM from being installed in a DDR2 DIMM slot on a motherboard? -
Answers Position of the bottom notch
How many threads can a quad-core processor handle at once? - Answers 8. Four core
processors x 2 threads
, A motherboard has 4 DIMM slots; 3 slots are gray and the 4th black. What type of memory is
this boards designed to use:
DDR4
DDR3
DDR2
All of the above - Answers DDR3
You have just upgraded memory on a computer from 4GB to 8GB by adding 1 DIMM. When you
first turn on the PC, the memory count shows only 4GB. Which of the following is most likely the
source of the problem? What can you do to fix it? - Answers The DIMM is not properly seated
What new parts will you need to replace a failing processor? - Answers Processor, Cooling
Assembly, Thermal Compound
A customer has a system with a Gigabyte B450 Aorus Pro motherboard. He wants to upgrade
the processory from the AMD Athlon X4 950 to the AMD Ryzen 7 2700x. Which of the following
accurately describes this upgrade - Answers The upgrade is possible and will yield a significant
increase in performance
A friend has asked you to help him find out if his computer is capable of overclocking. How can
you direct him? - Answers Show him how to find system summary data in the system info utility
in windows
Show him how to access BIOS/UEFI setup and browse thru the screens
An experience user has installed Oracle VM VirtualBox on her workstation and isattempting to
use it to create a virtual machine (VM). The software causing error message while attempting to
create the VM. What is the most likely problem? - Answers Virtualization was not enabled in the
BIOS/UEFI
What is a GHz - Answers 1 billion cycles per second
What is W a measure of - Answers Rate of energy transfer
*Watts (W) describe the rate of energy transfer, such as when cooling a CPU
Which of these will a mini-ITX motherboard fit into
