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  • Exam Code: 220-1001
  • Exam Name: CompTIA A+ Certification Exam: Core 1
  • Updated: Jul 21, 2026
  • Q & A: 752 Questions and Answers
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  • Exam Name: CompTIA A+ Certification Exam: Core 1
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  • Exam Code: 220-1001
  • Exam Name: CompTIA A+ Certification Exam: Core 1
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CompTIA 220-1001 Exam Syllabus Topics:

TopicDetails

Mobile Devices - 14%

Given a scenario, install and configure laptop hardware and components.1. 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/Bluetooth module
  • Cellular card
  • Video card
  • Mini PCIe
  • Screen
  • DC jack
  • Battery
  • Touchpad
  • Plastics/frames
  • Speaker
  • System board
  • CPU
Given a scenario, install components within the display of a laptop.1. Types
  • LCD
  • OLED

2. WiFi antenna connector/placement
3. Webcam
4. Microphone
5. Inverter
6. Digitizer/touchscreen

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
  • Touchpad (on/off)
  • Screen orientation
  • Media options (fast forward/rewind)
  • GPS (on/off)
  • Airplane mode
2. Docking station
3. Port replicator
4. Physical laptop lock and cable lock
5. Rotating/removable screens
Compare and contrast characteristics of various types of other mobile devices.1. Tablets
2. Smartphones
3. Wearable technology devices
  • Smart watches
  • Fitness monitors
  • VR/AR headsets

4. E-readers
5. GPS

Given a scenario, connect and configure accessories and ports of other mobile devices.1. Connection types
  • Wired
    - Micro-USB/Mini-USB/USB-C
    - Lightning
    - Tethering- Proprietary vendor-specific ports (communication/power)
  • Wireless
    - NFC
    - Bluetooth
    - IR
    - Hotspot

2. Accessories

  • Headsets
  • Speakers
  • Game pads
  • Extra battery packs/battery chargers
  • Protective covers/waterproofing
  • Credit card readers
  • Memory/MicroSD
Given a scenario, configure basic mobile device network connectivity and application support.1. Wireless/cellular data network (enable/disable)
  • Hotspot
  • Tethering
  • Airplane mode
2. Bluetooth
  • Enable Bluetooth
  • Enable pairing
  • Find a device for pairing
  • Enter the appropriate pin code
  • Test connectivity
3. Corporate and ISP email configuration
  • POP3
  • IMAP
  • Port and SSL settings
  • S/MIME
4. Integrated commercial provider email configuration
  • iCloud
  • Google/Inbox
  • Exchange Online
  • Yahoo

5. PRI updates/PRL updates/ baseband updates
6. Radio firmware
7. IMEI vs. IMSI
8. VPN


Given a scenario, use methods to perform mobile device synchronization.1. Synchronization methods
  • Synchronize to the cloud
  • Synchronize to the desktop
  • Synchronize to the automobile
2. Types of data to synchronize
  • Contacts
  • Applications
  • Email
  • Pictures
  • Music
  • Videos
  • Calendar
  • Bookmarks
  • Documents
  • Location data
  • Social media data
  • E-books
  • Passwords
3. Mutual authentication for multiple services (SSO)
4. Software requirements to install the application on the PC
5. Connection types to enable synchronization

Networking - 20%

Compare and contrast TCP and UDP ports, protocols, and their purposes.1. Ports and protocols
  • 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
  • 67/68 – DHCP
  • 389 – LDAP
  • 161/162 – SNMP

2. TCP vs. UDP

Compare and contrast common networking hardware devices.1. Routers
2. Switches
  • Managed
  • Unmanaged

3. Access points
4. Cloud-based network controller
5. Firewall
6. Network interface card
7. Repeater
8. Hub
9. Cable/DSL modem
10. Bridge
11. Patch panel

12. Power over Ethernet (PoE)

  • Injectors
  • Switch

13. Ethernet over Power

Given a scenario, install and configure a basic wired/wireless SOHO network.1. Router/switch functionality
2. Access point settings
3. IP addressing
4. NIC configuration
  • Wired
  • Wireless

5. End-user device configuration
6. IoT device configuration

  • Thermostat
  • Light switches
  • Security cameras
  • Door locks
  • Voice-enabled, smart speaker/digital assistant
7. Cable/DSL modem configuration
8. Firewall settings
  • Screened subnet (previously known as demilitarized zone)
  • Port forwarding
  • NAT
  • UPnP
  • Allow list/deny list
  • MAC filtering

9. QoS
10. Wireless settings


  • Encryption
  • Channels
Compare and contrast wireless networking protocols.1. 802.11a
2. 802.11b
3. 802.11g
4. 802.11n
5. 802.11ac
6. Frequencies
  • 2.4Ghz
  • 5Ghz

7. Channels

  • 1–11
8. Bluetooth
9. NFC
10. RFID
11. Zigbee
12. Z-Wave
13. 3G
14. 4G
15. 5G
16. LTE
Summarize the properties and purposes of services provided by networked hosts.1. Server roles
  • Web server
  • File server
  • Print server
  • DHCP server
  • DNS server
  • Proxy server
  • Mail server
  • Authentication server
  • syslog
2. Internet appliance
  • UTM
  • IDS
  • IPS
  • End-point management server
3. Legacy/embedded systems
Explain common network configuration concepts.1. IP addressing
  • Static
  • Dynamic
  • APIPA
  • Link local
2. DNS
3. DHCP
  • Reservations
4. IPv4 vs. IPv6
5. Subnet mask
6. Gateway
7. VPN
8. VLAN
9. NAT
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
  • WMN
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

Hardware - 27%

Explain basic cable types, features, and their purposes.1. Network cables
  • Ethernet
    - Cat 5
    - Cat 5e
    - Cat 6
    - Plenum
    - Shielded twisted pair
    - Unshielded twisted pair
    - 568A/B
  • Fiber
  • Coaxial
  • Speed and transmission limitations

2. Video cables

  • VGA
  • HDMI
  • Mini-HDMI
  • DisplayPort
  • DVI (DVI-D/DVI-I)
3. Multipurpose cables
  • Lightning
  • Thunderbolt
  • USB
  • USB-C
  • USB 2.0
  • USB 3.0
4. Peripheral cables
  • Serial
5. Hard drive cables
  • SATA
  • IDE
  • SCSI
6. Adapters
  • DVI to HDMI
  • USB to Ethernet
  • DVI to VGA
Identify common connector types.1. RJ-11
2. RJ-45
3. RS-232
4. BNC
5. RG-59
6. RG-6
7. USB
8. Micro-USB
9. Mini-USB
10. USB-C
11. DB-9
12. Lightning
13. SCSI
14. eSATA
15. Molex
Given a scenario, install RAM types.1. RAM types
  • SODIMM
  • DDR2
  • DDR3
  • DDR4

2. Single channel
3. Dual channel
4. Triple channel
5. Error correcting
6. Parity vs. non-parity

Given a scenario, select, install and configure storage devices.1. Optical drives
  • CD-ROM/CD-RW
  • DVD-ROM/DVD-RW/DVD-RW DL
  • Blu-ray
  • BD-R
  • BD-RE
2. Solid-state drives
  • M2 drives
  • NVME
  • SATA 2.5

3. Magnetic hard drives

  • 5,400rpm
  • 7,200rpm
  • 10,000rpm
  • 15,000rpm
  • Sizes:
    - 2.5
    - 3.5
4. Hybrid drives
5. Flash
  • SD card
  • CompactFlash
  • Micro-SD card
  • Mini-SD card
  • xD

6. Configurations

  • RAID 0, 1, 5, 10
  • Hot swappable



Given a scenario, install and configure motherboards, CPUs, and add-on cards.1. Motherboard form factor
  • ATX
  • mATX
  • ITX
  • mITX

2. Motherboard connectors types

  • PCI
  • PCIe
  • Riser card
  • Socket types
  • SATA
  • IDE
  • Front panel connector
  • Internal USB connector

3. BIOS/UEFI settings

  • Boot options
  • Firmware updates
  • Security settings
  • Interface configurations
  • Security
    1. Passwords
    2. Drive encryption
    - TPM
    - LoJack
    - Secure boot

4. CMOS battery
5. CPU features

  • Single-core
  • Multicore
  • Virtualization
  • Hyperthreading
  • Speeds
  • Overclocking
  • Integrated GPU
6. Compatibility
  • AMD
  • Intel

7. Cooling mechanism

  • Fans
  • Heat sink
  • Liquid
  • Thermal paste
8. Expansion cards
  • Video cards
    - Onboard
    - Add-on card
  • Sound cards
  • Network interface card
  • USB expansion card
  • eSATA card
Explain the purposes and uses of various peripheral types.1. Printer
2. ADF/flatbed scanner
3. Barcode scanner/QR scanner
4. Monitors
5. VR headset
6. Optical drive types
7. Mouse
8. Keyboard
9. Touchpad
10. Signature pad
11. Game controllers
12. Camera/webcam
13. Microphone
14. Speakers
15. Headset
16. Projector
  • Lumens/brightness

17. External storage drives
18. KVM
19. Magnetic reader/chip reader
20. NFC/tap pay device
21. Smart card reader

Summarize power supply types and features.1. Input 115V vs. 220V
2. Output 5V vs. 12V
3. 24-pin motherboard adapter
4. Wattage rating
5. Number of devices/types of devices to be powered
Given a scenario, select and configure appropriate components for a custom PC configuration to meet customer specifications or needs.1. Graphic/CAD/CAM design workstation
  • SSD
  • 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

  • SSD
  • High-end video/specialized GPU
  • High-definition sound card
  • High-end cooling
5. Network attached storage device
  • Media streaming
  • File sharing
  • Gigabit NIC
  • RAID array
  • Hard drive
6. Standard thick client
  • Desktop applications
  • Meets recommended requirements for selected OS

7. Thin client

  • Basic applications
  • Meets minimum requirements for selected OS
  • Network connectivity


Given a scenario, install and configure common devices.1. Desktop
  • Thin client
  • Thick client
  • Account setup/settings
2. Laptop/common mobile devices
  • Touchpad configuration
  • Touchscreen configuration
  • Application installations/configurations
  • Synchronization settings
  • Account setup/settings
  • Wireless settings

Given a scenario, configure SOHO multifunction devices/printers and settings.1. Use appropriate drivers for a given 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 device via operating system settings
    - TCP/Bonjour/AirPrint
  • Data privacy
    - User authentication on the device
    - Hard drive caching
Given a scenario, install and maintain various print technologies.1. Laser
  • Imaging drum, fuser assembly, transfer belt, transfer roller, pickup rollers, separate pads, duplexing assembly
  • Imaging process: processing, charging, exposing, developing, transferring, fusing, and cleaning
  • Maintenance: Replace toner, apply maintenance kit, calibrate, clean
2. Inkjet
  • Ink cartridge, print head, roller, feeder, duplexing assembly, carriage, and belt
  • Calibrate
  • Maintenance: Clean heads, replace cartridges, calibrate, clear jams
3. Thermal
  • Feed assembly, heating element
  • Special thermal paper
  • Maintenance: Replace paper, clean heating element, remove debris
4. Impact
  • Print head, ribbon, tractor feed
  • Impact paper
  • Maintenance: Replace ribbon, replace print head, replace paper
5. Virtual
  • Print to file
  • Print to PDF
  • Print to XPS
  • Print to image

6. 3D printers


  • Plastic filament




Virtualization and Cloud Computing - 12%

Compare and contrast cloud computing concepts.1. Common cloud models
  • IaaS
  • SaaS
  • PaaS
  • Public vs. private vs. hybrid vs. community

2. Shared resources

  • Internal vs. external

3. Rapid elasticity
4. On-demand
5. Resource pooling
6. Measured service
7. Metered
8. Off-site email applications
9. Cloud file storage services

  • Synchronization apps

10. Virtual application streaming/cloud-based applications

  • Applications for cell phones/tablets
  • Applications for laptops/desktops

11. Virtual desktop

  • Virtual NIC
Given a scenario, set up and configure client-side virtualization.1. Purpose of virtual machines
2. Resource requirements
3. Emulator requirements
4. Security requirements
5. Network requirements
6. Hypervisor

Hardware and Network Troubleshooting - 27%

Given a scenario, use the best practice methodology to resolve problems.- Always consider corporate policies, procedures, and impacts before implementing changes
1. Identify the problem
  • Question the user and identify user changes to computer and perform backups before making changes
  • Inquire regarding environmental or infrastructure changes
  • Review system and application logs

2. Establish a theory of probable cause (question the obvious)

  • If necessary, conduct external or internal research based on symptoms

3. Test the theory to determine cause

  • Once the theory is confirmed, determine the next steps to resolve problem
  • If theory is not confirmed re-establish new theory or escalate

4. Establish a plan of action to resolve the problem and implement the solution
5. Verify full system functionality and, if applicable, implement preventive measures
6. Document findings, actions, and outcomes

Given a scenario, troubleshoot problems related to motherboards, RAM, CPUs, and power.1. Common symptoms
  • Unexpected shutdowns
  • System lockups
  • POST code beeps
  • Blank screen on bootup
  • BIOS time and setting 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
  • Log entries and error messages
Given a scenario, troubleshoot hard drives and RAID arrays.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
Given a scenario, troubleshoot video, projector, and display issues.1. Common symptoms
  • VGA mode
  • No image on screen
  • Overheat shutdown
  • Dead pixels
  • Artifacts
  • Incorrect color patterns
  • Dim image
  • Flickering image
  • Distorted image
  • Distorted geometry
  • Burn-in
  • Oversized images and icons
Given a scenario, troubleshoot 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 reassembly

  • Document and label cable and screw locations
  • Organize parts
  • Refer to manufacturer resources
  • Use appropriate hand tools
Given a scenario, troubleshoot printers.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
  • Printing blank pages
  • No image on printer display
  • Multiple failed jobs in logs
Given a scenario, troubleshoot common wired and wireless network problems.1. Common symptoms
  • Limited connectivity
  • Unavailable resources
    1. Internet
    2. Local resources
    - Shares
    - Printers
    - Email
  • No connectivity
  • APIPA/link local address
  • Intermittent connectivity
  • IP conflict
  • Slow transfer speeds
  • Low RF signal
  • SSID not found

Reference: https://certification.comptia.org/training/self-study/books/a-220-1001-220-1002-study-guide

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220-1001 is one of the two tests that you need to take to earn the CompTIA A+ certificate. The other exam that you need to get this certification is 220-1002. The two tests are commonly called the Core 1 & 2 exams, or 1000 series, and were introduced in early 2019.

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