TESTOUT PC PRO CHAPTER 3 SYSTEM
COMPONENTS 2024-2025 QUESTIONS WITH
COMPLETE ANSWERS
ATX - CORRECT ANSWER Back plate measurements (6.25" × 1.75")
Power supply specifications: 24-pin ATX power connector On/off switch runs from
the case to the motherboard Soft-power control (OS can turn the computer off)
Expansion slot locations and spacing (0.8" between slots)
Mounting hole locations
CPU location (top of board near power supply)
Standard ATX - CORRECT ANSWER The standard ATX form factor is the form
factor that all other variants are modeled after. ATX motherboards:
Measure 12" × 9.6"
Have up to seven expansion slots Have between six and nine mounting holes
Extended ATX(EATX) - CORRECT ANSWER The EATX form factor is the largest
ATX variant. EATX:
Measures 12" × 13"
Typically uses extra space for additional memory slots
microATX - CORRECT ANSWER The microATX form factor is a smaller version
of the ATX form factor. The microATX form factor:
Measures 9.6" × 9.6"
Has four expansion slots
ITX - CORRECT ANSWER The ITX form factor was designed for low-power,
small form factor (SFF) computers. The most common ITX form factor is the Mini-
ITX form factor. The Mini-ITX form factor:
Specifies a maximum motherboard size of 6.7" × 6.7"
Has only one expansion slot Allows for small (100 watt) power supplies Is
typically used with a home theater PC (HTPC)
, TESTOUT PC PRO CHAPTER 3 SYSTEM
COMPONENTS 2024-2025 QUESTIONS WITH
COMPLETE ANSWERS
Other ITX form factors include the following:
Nano-ITX (4.7" × 4.7")
Pico-ITX (3.9" × 2.85") Mobile-ITX (2.9" × 1.7")
NLX - CORRECT ANSWER NLX (new low profile extended) is an old form factor
that was designed for use in slimline desktop computers. NLX:
Uses a detachable riser card to provide expansion slots (the motherboard itself has
no expansion slots).
Allows the motherboard to slide in or out of the system case easily. Was replaced
by microATX and Mini-ITX.
BTX - CORRECT ANSWER The BTX (balanced technology extended) form
factor was designed as a replacement for the ATX form factor. However, it did not
gain widespread adoption. With BTX:
The CPU is positioned in such a way that air flow is increased.
There is no heatsink fan. Instead, a thermal module or shroud fits over the CPU to
move heat directly out of the system. The back panel orientation and mounting
location is reversed.
ATX Full-tower - CORRECT ANSWER ATX full-tower cases are the largest
computer cases. Full-tower cases have a lot of space for external and internal
components. ATX full-tower cases are compatible with the following form factors:
Standard ATX
EATX microATX
COMPONENTS 2024-2025 QUESTIONS WITH
COMPLETE ANSWERS
ATX - CORRECT ANSWER Back plate measurements (6.25" × 1.75")
Power supply specifications: 24-pin ATX power connector On/off switch runs from
the case to the motherboard Soft-power control (OS can turn the computer off)
Expansion slot locations and spacing (0.8" between slots)
Mounting hole locations
CPU location (top of board near power supply)
Standard ATX - CORRECT ANSWER The standard ATX form factor is the form
factor that all other variants are modeled after. ATX motherboards:
Measure 12" × 9.6"
Have up to seven expansion slots Have between six and nine mounting holes
Extended ATX(EATX) - CORRECT ANSWER The EATX form factor is the largest
ATX variant. EATX:
Measures 12" × 13"
Typically uses extra space for additional memory slots
microATX - CORRECT ANSWER The microATX form factor is a smaller version
of the ATX form factor. The microATX form factor:
Measures 9.6" × 9.6"
Has four expansion slots
ITX - CORRECT ANSWER The ITX form factor was designed for low-power,
small form factor (SFF) computers. The most common ITX form factor is the Mini-
ITX form factor. The Mini-ITX form factor:
Specifies a maximum motherboard size of 6.7" × 6.7"
Has only one expansion slot Allows for small (100 watt) power supplies Is
typically used with a home theater PC (HTPC)
, TESTOUT PC PRO CHAPTER 3 SYSTEM
COMPONENTS 2024-2025 QUESTIONS WITH
COMPLETE ANSWERS
Other ITX form factors include the following:
Nano-ITX (4.7" × 4.7")
Pico-ITX (3.9" × 2.85") Mobile-ITX (2.9" × 1.7")
NLX - CORRECT ANSWER NLX (new low profile extended) is an old form factor
that was designed for use in slimline desktop computers. NLX:
Uses a detachable riser card to provide expansion slots (the motherboard itself has
no expansion slots).
Allows the motherboard to slide in or out of the system case easily. Was replaced
by microATX and Mini-ITX.
BTX - CORRECT ANSWER The BTX (balanced technology extended) form
factor was designed as a replacement for the ATX form factor. However, it did not
gain widespread adoption. With BTX:
The CPU is positioned in such a way that air flow is increased.
There is no heatsink fan. Instead, a thermal module or shroud fits over the CPU to
move heat directly out of the system. The back panel orientation and mounting
location is reversed.
ATX Full-tower - CORRECT ANSWER ATX full-tower cases are the largest
computer cases. Full-tower cases have a lot of space for external and internal
components. ATX full-tower cases are compatible with the following form factors:
Standard ATX
EATX microATX
