CompTIA A+ Core 1 (220-1201) Visual and Hands-On Study Guide Flashcards

Comprehensive practice flashcards built directly from the CompTIA A+ Core 1 (220-1201) Visual and Hands-On Study Guide covering hardware, networking, troubleshooting, mobile devices, cloud computing, and printers.

What are the seven official troubleshooting steps in order?

1. Identify, 2. Theory, 3. Test, 4. Plan, 5. Fix, 6. Verify, 7. Document

What memory sentence helps recall the seven troubleshooting steps in order?

I Think Testing Plans Fix Very Difficult problems.

In CompTIA troubleshooting questions, what does the clue word 'LEAST effort' instruct you to do?

Try the simple physical check before replacement or major commands.

What does the clue phrase 'Before deployment' mean when setting up devices?

Configure and standardize first, then issue the device.

What is the primary role and typical voltage of a CMOS battery?

Keeps time and firmware settings; usually about 3 volts.

What initial check must be made before installing a new CPU on a motherboard?

Check the manufacturer documentation to see which processors the motherboard and BIOS support.

What motherboard power connector supplies main power to the board?

24-pin ATX

What is the function of ECC RAM and what components must support it?

Detects and corrects memory errors; both the CPU and motherboard must support it.

What are the minimum drive requirement and key characteristics of RAID 5?

Minimum of 3 drives; uses stripe plus parity; can survive one drive failure.

What RAID level provides striping with zero fault tolerance using a minimum of 2 drives?

RAID 0

Which tool should be used to test CMOS battery voltage?

A volt-ohm meter or multimeter (not a continuity meter).

What is the purpose of thermal paste between a CPU and heat sink?

It fills tiny air gaps between the CPU and heat sink.

Among Thunderbolt, Lightning, USB, and serial, which is the best choice for a Windows 4K display wall?

Thunderbolt

What feature is required on a USB-C port to transmit video signal?

DisplayPort Alternate Mode or another supported video feature.

What are the distance and speed limits for Thinnet and Thicknet cables?

Thinnet: 185 m at 10 Mbps; Thicknet: 500 m at 10 Mbps.

Which type of fiber optic cable uses one straight light road for very long distances?

Single-mode fiber

What does an IPv4 address of 169.254.x.x indicate?

APIPA (Automatic Private IP Addressing), meaning a DHCP server could not be reached.

What are the loopback addresses for IPv4 and IPv6?

IPv4: 127.0.0.1; IPv6: ::1

What prefix identifies an IPv6 link-local address?

fe80::/10

What mnemonic is used to remember the seven OSI layers from Layer 1 to Layer 7?

Please Do Not Throw Sausage Pizza Away (Physical, Data Link, Network, Transport, Session, Presentation, Application).

At which OSI layer do switches operate and what is the protocol data unit name at that layer?

Layer 2 (Data Link layer); the data unit is a Frame.

Which OSI layers correspond to the TCP/IP Application layer?

OSI Layers 7 (Application), 6 (Presentation), and 5 (Session).

What command should be used if local network devices communicate but cannot reach a remote network and a router is suspected?

tracert

What function does the arp command perform?

It views the ARP cache to show which MAC address matches a local IP address.

Which networking tools are used for attaching modular plugs, seating wires in keystones, and locating hidden cables?

Crimper (attaches modular plugs), Punchdown tool (seats wires), and Toner probe (finds cables in bundles/walls).

Which non-overlapping channels should be used in the 2.4 GHz Wi-Fi band?

Channels 1, 6, and 11

Which wireless technology is commonly used for retail anti-theft tags, inventory, and badges?

RFID

What port numbers are assigned to FTP, SSH/SFTP, DNS, DHCP, HTTP, HTTPS, SMB, and RDP?

FTP: 20/21, SSH/SFTP: 22, DNS: 53, DHCP: 67/68, HTTP: 80, HTTPS: 443, SMB: 445, RDP: 3389

How does SFTP differ from standard FTP in terms of protocol and port?

SFTP runs through SSH on port 22 and is fully encrypted, whereas standard FTP uses ports 20/21 and is unencrypted.

If laptop touch screen input works with fingers but pen functions fail, what component should be investigated?

The digitizer or pen layer.

What management approach standardizes company-owned mobile devices before they are issued to users?

Corporate device configuration

What cloud service characteristic dynamically expands or shrinks resources based on demand?

Rapid elasticity

What cloud service model provides virtual machines, storage, and networking while requiring the customer to manage the OS and applications?

IaaS (Infrastructure as a Service)

What are the seven steps of laser printing in order?

1. Processing, 2. Charging, 3. Exposing, 4. Developing, 5. Transferring, 6. Fusing, 7. Cleaning

What memory sentence is used for the laser printing steps?

People Can Expect Delicious Toast From Cafes.

What step must be taken immediately after replacing an inkjet printer cartridge?

Run the print alignment program.

If a printed document appears sideways and cut off despite looking correct in word processor software, what needs adjustment?

The printer-driver page orientation.

What happens to permissions when an NTFS folder is restored to a FAT partition?

NTFS permissions are removed because FAT cannot store them.

Which USB removal policy setting reduces write caching to allow safe unplugging without 'Safely Remove Hardware'?

Optimize for quick removal

How does split horizon prevent routing loops?

It prevents a router from advertising a route back through the same interface from which it learned that route.