CompTIA A+ Certification Exam (901) (220-901日本語版) : 220-901日本語

Exam Code: 220-901-JPN
Exam Name: CompTIA A+ Certification Exam (901) (220-901日本語版)
Updated: May 31, 2026 Q & A: 695 Questions and Answers

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Exam Topics for CompTIA A+ 220-901

Dealing with the flexible, employee as well as standard working structures from Android and iPhone to Windows as well as Linux. Organization conventions like IPv4, IPv6, DHCP, and also subnet shroud to set up and also sustain wired as well as remote companies. Utilizing the nuts as well as bolts of virtualization, dispersed computer. Applying requirements of customers like help resolve IT issues. Selection trees for identifying, resolving, and also archiving fundamental tools and also show problems.

Mobile computing, protection and risk management, troubleshooting OSs/devices/apps/ services (by utilizing Windows operating systems as a recommendation). Utilizing networking devices including cabling, buttons and routers. Using virtualization as well as distributed computer. Organizing conventions consisting of IPv4, IPv6, DHCP as well as subnet shroud to set up and sustain wired and also remote companies. Networking fundamentals like the OSI version plus fundamental cabling. Setting up advantages as a switch as well as router. Troubleshooting fundamental issues with equipment, networks, OSs/devices/apps/ services( by using Windows operating systems as a reference).

Domain name 1: “Mount as well as set up PCs, servers, mobile phones, and also peripherals to fulfill business demands.” Domain name 2: “Maintain a COMPUTER, web server, smartphone, and also peripheral to minimize risk and also the expense of disturbance, recovery, as well as reconstruction.” Domain 3: “Take Care Of Computers (by utilizing laptop computers as a referral).”. Domain name 4: “Install/configure printers (by utilizing printers as a referral).”.

CompTIA 220-901 Exam Syllabus Topics:

Topic	Details
Hardware34%
Given a scenario, configure settings and use BIOS/UEFI tools on a PC.	1. Firmware upgrades/flash BIOS 2. BIOS component information RAM Hard drive Optical drive CPU 3.BIOS configurations Boot sequence Enabling and disabling devices Date/time Clock speeds Virtualization support BIOS security (passwords, driveencryption: TPM, LoJack, secure boot) 4.Built-in diagnostics 5.Monitoring Temperature monitoring Fan speeds Intrusion detection/notification Voltage Clock Bus speed
Explain the importance of motherboard components, their purpose and properties.	1.Sizes ATX Micro-ATX Mini-ITX ITX 2.Expansion slots PCI PCI-X PCIe miniPCI 3.RAM slots 4.CPU sockets 5.Chipsets Northbridge Southbridge 6.CMOS battery 7.Power connections and types 8.Fan connectors 9.Front/top panel connectors USB Audio Power button Power light Drive activity lights 10.Bus speeds 11.Reset button
Compare and contrast various RAM types and their features.	1.Types DDR DDR2 DDR3 SODIMM DIMM Parity vs. non-parity ECC vs. non-ECC RAM configurations a)Single channel vs. dualchannel vs. triple channel Single sided vs. double sided Buffered vs. unbuffered 2.RAM compatibility
Install and configure PC expansion cards.	1.Sound cards 2.Video cards 3.Network cards 4.USB cards 5.Firewire cards 6.Thunderbolt cards 7.Storage cards 8.Modem cards 9.Wireless/cellular cards 10.TV tuner cards 11.Video capture cards 12.Riser cards
Install and configure storage devices and use appropriate media.	1.Optical drives CD-ROM/CD-RW DVD-ROM/DVD-RW/DVD-RW DL Blu-ray BD-R BD-RE 2.Magnetic hard disk drives 5400 rpm 7200 rpm 10,000 rpm 3.Hot swappable drives 4.Solid state/flash drives Compact flash SD MicroSD MiniSD xD SSD Hybrid eMMC 5.RAID types 0 1 5 10 6.Tape drive 7.Media capacity CD CD-RW DVD-RW DVD Blu-ray Tape DVD DL
Install various types of CPUs and apply the appropriate cooling methods.	1.Socket types Intel: 775, 1155, 1156, 1366, 1150, 2011 AMD: AM3, AM3+, FM1, FM2, FM2+ 2.Characteristics Speeds Cores Cache size/type Hyperthreading Virtualization support Architecture (32-bit vs. 64-bit) Integrated GPU Disable execute bit 3. Cooling Heat sink Fans Thermal paste Liquid-based Fanless/passive
Compare and contrast various PC connection interfaces, their characteristics and purpose.	1.Physical connections USB 1.1 vs. 2.0 vs. 3.0 Connector types: A, B, mini, micro Firewire 400 vs. Firewire 800 SATA1 vs. SATA2 vs. SATA3, eSATA Other connector types VGA HDMI DVI Audio Analog Digital (Optical connector) RJ-45 RJ-11 Thunderbolt 2. Wireless connections Bluetooth RF IR NFC 3.Characteristics Analog Digital Distance limitations Data transfer speeds Quality Frequencies
Install a power supply based on given specifications.	1.Connector types and their voltages SATA Molex 4/8-pin 12v PCIe 6/8-pin 20-pin 24-pin 2.Specifications Wattage Dual rail Size Number of connectors ATX MicroATX Dual voltage options
Given a scenario, select the appropriate components for a custom PC configuration to meet customer specifications or needs.	1.Graphic/CAD/CAM design workstation Multicore processor High-end video Maximum RAM 2.Audio/video editing workstation Specialized audio and video card Large fast hard drive Dual monitors 3.Virtualization workstation Maximum RAM and CPU cores 4.Gaming PC Multicore processor High-end video/specialized GPU High-definition sound card High-end cooling 5.Home theater PC Surround sound audio HDMI output HTPC compact form factor TV tuner 6.Standard thick client Desktop applications Meets recommended requirements for selected OS 7.Thin client Basic applications Meets minimum requirementsfor selected OS Network connectivity 8.Home server PC Media streaming File sharing Print sharing Gigabit NIC RAID array
Compare and contrast types of display devices and their features.	1.Types LCD TN vs. IPS Fluorescent vs. LED backlighting Plasma Projector OLED 2.Refresh/frame rates 3.Resolution 4.Native resolution 5.Brightness/lumens 6.Analog vs. digital 7.Privacy/antiglare filters 8.Multiple displays 9.Aspect ratios 16:9 16:10 4:3
Identify common PC connector types and associated cables.	1.Display connector types DVI-D DVI-I DVI-A DisplayPort RCA HD15 (i.e., DE15 or DB15) BNC miniHDMI miniDin-6 2.Display cable types HDMI DVI VGA Component Composite Coaxial 3.Device cables and connectors SATA eSATA USB Firewire (IEEE1394) PS/2 Audio 4.Adapters and convertors DVI to HDMI USB A to USB B USB to Ethernet DVI to VGA Thunderbolt to DVI PS/2 to USB HDMI to VGA
Install and configure common peripheral devices.	1.Input devices Mouse Keyboard Scanner Barcode reader Biometric devices Game pads Joysticks Digitizer Motion sensor Touch pads Smart card readers Digital cameras Microphone Webcam Camcorder 2.Output devices Printers Speakers Display devices 3.Input & output devices Touch screen KVM Smart TV Set-top Box MIDI-enabled devices
Install SOHO multifunction device/printers and configure appropriate settings.	1.Use appropriate drivers for agiven operating system Configuration settings Duplex Collate Orientation Quality 2.Device sharing Wired USB Serial Ethernet Wireless Bluetooth 802.11 (a/b/g/n/ac) Infrastructure vs. ad hoc Integrated print server (hardware) Cloud printing/remote printing 3.Public/shared devices Sharing local/networked devicevia operating system settings TCP/Bonjour/AirPrint Data privacy User authentication on the device Hard drive caching
Compare and contrast differences between the various print technologies and the associated imaging process.	1.Laser Imaging drum, fuser assembly,transfer belt, transfer roller, pickuprollers, separate pads,duplexing assembly Imaging process: processing,charging, exposing, developing,transferring, fusing and cleaning 2.Inkjet Ink cartridge, print head, roller, feeder,duplexing assembly, carriage and belt Calibration 3.Thermal Feed assembly, heating element Special thermal paper 4.Impact Print head, ribbon, tractor feed Impact paper 5.Virtual Print to file Print to PDF Print to XPS Print to image
Given a scenario, perform appropriate printer maintenance.	1.Laser Replacing toner, applyingmaintenance kit, calibration, cleaning 2.Therma Replace paper, clean heatingelement, remove debris 3.Impact Replace ribbon, replaceprint head, replace paper 4.Inkjet Clean heads, replace cartridges,calibration, clear jams
Networking 21%
Identify the various types of network cables and connectors.	1.Fiber Connectors: SC, ST and LC 2.Twisted Pair Connectors: RJ-11, RJ-45 Wiring standards: T568A, T568B 3.Coaxial Connectors: BNC, F-connector
Compare and contrast the characteristics of connectors and cabling.	1.Fiber Types (single-mode vs. multi-mode) Speed and transmission limitations 2.Twisted pair Types: STP, UTP, CAT3, CAT5, CAT5e,CAT6, CAT6e, CAT7, plenum, PVC Speed and transmission limitations Splitters and effects on signal quality 3.Coaxial Types: RG-6, RG-59 Speed and transmission limitations Splitters and effects on signal quality
Explain the properties and characteristics of TCP/IP.	1.IPv4 vs. IPv6 2.Public vs. private vs. APIPA/link local 3.Static vs. dynamic 4. Client-side DNS settings 5.Client-side DHCP 6. Subnet mask vs. CIDR 7.Gateway
Explain common TCP and UDP ports, protocols and their purpose.	1.Ports 21 – FTP 22 – SSH 23 – TELNET 25 – SMTP 53 – DNS 80 – HTTP 110 – POP3 143 – IMAP 443 – HTTPS 3389 – RDP 137-139 – NetBIOS/NetBT 445 – SMB/CIFS 427 – SLP 548 – AFP 2.Protocols DHCP DNS LDAP SNMP SMB CIFS SSH AFP 3.TCP vs. UDP
Compare and contrast various WiFi networking standards and encryption types.	1.Standards 802.11 (a/b/g/n/ac) Speeds, distances and frequencies 2.Encryption types WEP, WPA, WPA2, TKIP, AES
Given a scenario, install and configure SOHO wireless/ wired router and apply appropriate settings.	1.Channels 2.Port forwarding, port triggering 3.DHCP (on/off) 4.DMZ 5.NAT/DNAT 6.Basic QoS 7.Firmware 8. UPnP
Compare and contrast Internet connection types, network types and their features.	1.Internet connection types Cable DSL Dial-up Fiber Satellite ISDN Cellular Tethering Mobile hotspot Line-of-sight wireless Internet service 2.Network Types LAN WAN PAN MAN
Compare and contrast network architecture devices, their functions and features.	1.Hub 2.Switch 3.Router 4.Access point 5.Bridge 6.Modem 7.Firewall 8.Patch panel 9.Repeaters/extenders 10.Ethernet over Power 11.Power over Ethernet injector
Given a scenario, use appropriate networking tools.	1.Crimper 2.Cable stripper 3.Multimeter 4.Tone generator and probe 5.Cable tester 6.Loopback plug 7.Punchdown tool 8.WiFi analyzer
Mobile Devices 17%
Install and configure laptop hardware and components.	1.Expansion options Expresscard /34 Expresscard /54 SODIMM Flash Ports/Adapters Thunderbolt DisplayPort USB to RJ-45 dongle USB to WiFi dongle USB to Bluetooth USB Optical Drive 2.Hardware/device replacement Keyboard Hard drive SSD vs. hybrid vs. magnetic disk 1.8in vs. 2.5in Memory Smart card reader Optical drive Wireless card Mini-PCIe Screen DC jack Battery Touchpad Plastics/frames Speaker System board CPU
Explain the function of components within the display of a laptop.	1.Types LCD TN vs. IPS Fluorescent vs. LED backlighting OLED 2.WiFi antenna connector/placement 3.Webcam 4.Microphone 5.Inverter 6.Digitizer
Given a scenario, use appropriate laptop features.	1.Special function keys Dual displays Wireless (on/off) Cellular (on/off) Volume settings Screen brightness Bluetooth (on/off) Keyboard backlight Touch pad (on/off) Screen orientation Media options (fast forward/rewind) GPS (on/off) Airplane mode 2.Docking station 3.Physical laptop lock and cable lock 4.Rotating/removable screens
Explain the characteristics of various types of other mobile devices.	1.Tablets 2.Smartphones 3.Wearable technology devices Smart watches Fitness monitors Glasses and headsets 4.Phablets 5.e-Readers 6.Smart camera 7.GPS
Compare and contrast accessories and ports of other mobile devices.	1.Connection types NFC Proprietary vendor-specific ports (communication/power) MicroUSB/miniUSB Lightning Bluetooth IR Hotspot/tethering 2.Accessories Headsets Speakers Game pads Docking stations Extra battery packs/battery chargers Protective covers/water proofing Credit card readers Memory/MicroSD
Hardware and Network Troubleshooting 28%
Given a scenario, troubleshoot common problems related to motherboards, RAM, CPU and power with appropriate tools.	1.Common symptoms Unexpected shutdowns System lockups POST code beeps Blank screen on bootup BIOS time and settings resets Attempts to boot to incorrect device Continuous reboots No power Overheating Loud noise Intermittent device failure Fans spin – no power to other devices Indicator lights Smoke Burning smell Proprietary crash screens (BSOD/pin wheel) Distended capacitors 2.Tools Multimeter Power supply tester Loopback plugs POST card/USB
Given a scenario, troubleshoot hard drives and RAID arrays with appropriate tools.	1.Common symptoms Read/write failure Slow performance Loud clicking noise Failure to boot Drive not recognized OS not found RAID not found RAID stops working Proprietary crash screens (BSOD/pin wheel) S.M.A.R.T. errors 2.Tools Screwdriver External enclosures CHKDSK FORMAT File recovery software Bootrec Diskpart Defragmentation tool
Given a scenario, troubleshoot common video, projector and display issues.	1.Common symptoms VGA mode No image on screen Overheat shutdown Dead pixels Artifacts Color patterns incorrect Dim image Flickering image Distorted image Distorted geometry Burn-in Oversized images and icons
Given a scenario, troubleshoot wired and wireless networks with appropriate tools.	1.Common symptoms No connectivity APIPA/link local address Limited connectivity Local connectivity Intermittent connectivity IP conflict Slow transfer speeds Low RF signal SSID not found 2.Hardware tools Cable tester Loopback plug Punchdown tools Tone generator and probe Wire strippers Crimper Wireless locator 3.Command line tools PING IPCONFIG/IFCONFIG TRACERT NETSTAT NBTSTAT NET NETDOM NSLOOKUP
Given a scenario, troubleshoot and repair common mobile device issues while adhering to the appropriate procedures.	1.Common symptoms No display Dim display Flickering display Sticking keys Intermittent wireless Battery not charging Ghost cursor/pointer drift No power Num lock indicator lights No wireless connectivity No Bluetooth connectivity Cannot display to external monitor Touchscreen non-responsive Apps not loading Slow performance Unable to decrypt email Extremely short battery life Overheating Frozen system No sound from speakers GPS not functioning Swollen battery 2. Disassembling processes for proper re-assembly Document and label cable and screw locations Organize parts Refer to manufacturer resources Use appropriate hand tools
Given a scenario, troubleshoot printers with appropriate tools.	1.Common symptoms Streaks Faded prints Ghost images Toner not fused to the paper Creased paper Paper not feeding Paper jam No connectivity Garbled characters on paper Vertical lines on page Backed up print queue Low memory errors Access denied Printer will not print Color prints in wrong print color Unable to install printer Error codes Printing blank pages No image on printer display 2.Tools Maintenance kit Toner vacuum Compressed air Printer spooler

Reference: https://certification.comptia.org/certifications/a

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