220-901 A+ Certification (Exam 220-901) - HLT Week 1
(Qs & As)
1-12 Unit 1.1 / Motherboard Components
13-27 Unit 2.2 / System Memory
28-42 Unit 2.3 / Processors
43-52 Unit 2.4 / BIOS and UEFI
53-69 Unit 1.5 / Removable Storage Devices
If you want to build the smallest system you can, should ...
If you want to build the smallest system you can, should you choose a Micro-ATX or Mini-ITX
motherboard? Answer-Mini-ITX is smaller (6.7" square compared to 9.6" square).
How many expansion slots does a Micro-ATX board support? Answer-Four.
Apart from addressing and data transfer, what are the other functions of a bus? Answer-
Carry power and timing signals to a component.
If some marketing literature talks about something working at 1 Gbps, what does this mean?
Answer-Gbps is a transfer rate so it means that the nominal transfer rate is 1 Gbps - the
actual throughput is likely to be lower once you take signaling and error correction into account.
What is the main function of the chipset? Answer-Provides controllers for the CPU to
interface with other components (memory and expansion bus for instance) and adapters to
provide functions such as video and audio, and Ethernet and wireless networking on the
motherboard.
, 220-901 A+ Certification (Exam 220-901) - HLT Week 1
(Qs & As)
True or false? The Real Time Clock controls the timing of signals between the CPU and other
components. Answer-False - the system clock controls timing; the Real Time Clock keeps
track of the calendar date and time.
What type of socket is used to install system memory? Answer-Dual Inline Memory
Module (DIMM).
What two types of PCI adapter card can you plug into a motherboard with 5V PCI slots?
Answer-5V and universal adapter cards.
What is the bandwidth of a PCIe v2.0 x16 graphics adapter? Answer-8 GBps.
500 MBps x 16 = 8000 MBps or 8 GBps
You are building a custom system that will require either two or three expansion cards. Which
motherboard form factor would best fit this requirement? Answer-Micro ATX
You are identifiying front panel connectors. You have located USB, power button / light, drive
activity, and reset button. According to the CompTIA syllabus, what other connector should you
be able to locate? Answer-Audio
A coin cell type ____ battery installed on the motherboard provides power to the system's
internal clock. Answer-CMOS (Complementary Metal-Oxide Semiconductor) or RTC (Real
Time Clock) battery
What are the principal characteristics of DRAM technology? Answer-Each cell in Dynamic
RAM must be refreshed periodically to preserve its charge. It is high density and low cost.
Why is Synchronous DRAM so-called? Answer-Because it works at the same speed as the
motherboard.
What is the clock speed of PC2100 DDR SDRAM? Answer-2100 ÷ 8 = 262.5 ÷ 2 = 131.25 ~
133 MHz
How many pins are there on a DIMM stick of DDR2 SDRAM? Answer-240
How can you distinguish memory slots on the motherboard? Answer-They have plastic
clips at either end.
How is laptop system memory typically packaged? Answer-SODIMM.
When installing a dual-rank stick of memory, what might you need to check? Answer-
Whether dual-rank memory is supported and whether it must be fitted into a particular slot.
You are configuring a system with dual-channel memory. You have two modules and there are
four slots. How would you determine which slots to use? Answer-Check the system guide
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