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CompTIA A+ · 220-1101 & 220-1102
Question 1 · Core 1 · Networking
Which TCP port does Remote Desktop Protocol (RDP) use by default?
Answer: B. RDP uses TCP 3389 for remote graphical access to Windows. Port 22 is SSH and 443 is HTTPS.
Question 2 · Core 1 · Hardware
You need fault tolerance that survives a single drive failure while wasting the least capacity. Which RAID level fits best?
Answer: C. RAID 5 stripes data with distributed parity, surviving one drive failure with only one drive of overhead. RAID 0 has no redundancy; RAID 1 and 10 mirror, costing 50% of capacity.
Question 3 · Core 1 · Mobile Devices
Which connector is reversible and used by most modern Android phones, laptops, and peripherals?
Answer: C. USB-C is reversible and carries power, data, and (with alt modes) video. Lightning is Apple-proprietary; micro and mini-USB are older and not reversible.
Question 4 · Core 1 · Networking
What is the default subnet mask for a Class C IPv4 address?
Answer: C. Class C uses a /24 mask, 255.255.255.0, leaving 254 usable host addresses. Class A is 255.0.0.0 and Class B is 255.255.0.0.
Question 5 · Core 1 · Virtualization & Cloud
Which cloud service model provides virtual machines, storage, and networking while the customer manages the operating system and applications?
Answer: C. Infrastructure as a Service (IaaS) gives you the virtual hardware and you manage the OS and up. PaaS adds a managed runtime; SaaS delivers the finished application.
Question 6 · Core 1 · Troubleshooting
A PC powers on with fans spinning but shows no display and emits repeating beep codes. What is the BEST first step?
Answer: B. Repeating POST beep codes most often indicate a memory problem. Reseating or testing the RAM is the quickest, lowest-cost first step before replacing pricier parts.
Question 7 · Core 2 · Operating Systems
Which Windows file system supports access permissions, EFS encryption, journaling, and very large volumes?
Answer: C. NTFS supports permissions, EFS, compression, journaling, and large files and volumes. FAT32 has a 4 GB file-size limit and no permissions; ext4 is a Linux file system.
Question 8 · Core 2 · Security
Following best-practice malware removal, what should you do immediately after you identify and verify malware symptoms?
Answer: B. The order is: identify and verify, quarantine, disable System Restore (Windows), remediate, schedule scans and updates, re-enable System Restore, then educate the user. Quarantine comes right after identification to stop the spread.
Question 9 · Core 2 · Operational Procedures
Which class of fire extinguisher is rated for energized electrical fires, such as a burning power supply?
Answer: C. Class C extinguishers are for energized electrical equipment. Class A is for ordinary combustibles, Class B for flammable liquids, and Class K for cooking oils.
Question 10 · Core 2 · Security
A login that requires a password plus a one-time code from an authenticator app is an example of what?
Answer: B. Combining something you know (the password) with something you have (the code-generating app) is multifactor authentication (MFA). SSO is one login for many apps; RBAC grants access by role.