Key details for this exam, checked against the published exam outline
Each question shows the correct answer and an explanation of why it is right
Which of the following cable types is a video-only connection?
The correct answer is D. DVI (Digital Visual Interface).
According to CompTIA A+ Core 1 220-1201 objectives under Hardware and Display Technologies:
DVI is primarily a video-only interface that transmits digital or analog video signals from a source (like a computer) to a display.
Unlike HDMI or USB-C, DVI does not carry audio signals, making it strictly for video.
Why the other options are incorrect:
A . DisplayPort: Supports video and audio as well as other features such as daisy-chaining multiple monitors.
B . HDMI: Transmits both video and audio signals over a single cable.
C . USB-C: Can carry data, power, and video/audio signals depending on the device and protocol (e.g., DisplayPort Alt Mode).
References:
CompTIA A+ Core 1 (220-1201) Exam Objectives -- Hardware: ''Given a scenario, install and configure display devices and connections including VGA, DVI, HDMI, DisplayPort, and USB-C.''
Mike Meyers' CompTIA A+ Certification Guide, 13th Edition, Chapter on Video Connectors and Display Technologies.
A developer wants to ensure their critical data is protected from hard drive failure. Their workstation has two hard drives. Which RAID level should they use?
RAID 1 is known as mirroring. It duplicates all data to both drives simultaneously, providing redundancy in the event of a single drive failure. CompTIA A+ teaches that RAID 1 is ideal when reliability is the priority and only two drives are available exactly matching this scenario.
RAID 0 offers no redundancy. RAID 5 requires three or more drives. RAID 10 requires four or more drives.
Since the workstation has only two drives, RAID 1 is the only RAID configuration providing data protection and is heavily featured in CompTIA's coverage of RAID technologies, their requirements, and their purposes in fault tolerance.
An office manager wants to block all outbound internet traffic but continue to enable all inbound traffic. Which of the following should a technician configure to achieve this goal?
Comprehensive and Detailed Explanation From Exact Extract:
A firewall allows for detailed traffic control, including blocking outbound connections while allowing inbound ones. This is contrary to typical security setups, but it can be configured via advanced firewall rules.
Which of the following tools would a technician use to connect wires to an RJ45 connector?
A crimper is specifically used to attach RJ45 connectors to the ends of network cables. It pressesthe connector pins into the cable's wires, establishing a secure electrical connection. A punchdown tool is used for wiring patch panels or keystone jacks, not for attaching connectors.
Which of the following is used to assign an IP address to a network PC?
The correct answer is C. DHCP (Dynamic Host Configuration Protocol).
According to CompTIA A+ Core 1 220-1201 objectives under Networking:
DHCP is used to automatically assign IP addresses and related network configuration (such as subnet mask, default gateway, and DNS servers) to devices on a network.
This eliminates the need for manually configuring IP addresses on each PC and helps prevent conflicts.
Why the other options are incorrect:
A . VLAN (Virtual Local Area Network): VLANs segment a network into logical subnets but do not assign IP addresses.
B . DNS (Domain Name System): DNS translates domain names to IP addresses; it does not assign IP addresses to devices.
D . TCP (Transmission Control Protocol): TCP is a transport layer protocol used for reliable communication between devices, not for IP assignment.
References:
CompTIA A+ Core 1 (220-1201) Exam Objectives -- Networking: ''Given a scenario, configure TCP/IP, including DHCP, static addressing, and subnetting.''
Mike Meyers' CompTIA A+ Certification Guide, 13th Edition, Chapter on Networking Protocols and IP Addressing.
A company wants to optimize its hardware usage by running multiple operating systems concurrently on a single physical server. Which of the following concepts achieves this goal?
Running multiple operating systems at the same time on a single physical server is accomplished through virtualization. In this scenario, host-based virtualization means a host operating system is installed on the physical server first, and then virtualization software runs on top of that OS to create and manage multiple virtual machines. Each virtual machine can run its own guest operating system independently, while sharing the server's CPU, RAM, storage, and network resources. This improves hardware utilization because one physical server can replace multiple separate machines, and resources can be allocated to VMs based on workload needs.
The other options do not directly describe the concept of running multiple OS instances on the same physical hardware. Public cloud services describe a delivery model where resources are provided by a third-party provider, but the underlying concept enabling multiple OS instances is still virtualization. High-availability clustering focuses on redundancy and failover across multiple servers. Software as a service provides a completed application to users, not multiple OS instances. Load balancing distributes traffic across systems and does not create separate operating systems. Therefore, the correct choice is host-based virtualization.
Exam domains verified against: Official CompTIA 220-1201 exam guide, last checked October 2026.
Install and configure hardware components like batteries, cameras, and wireless antennas. Set up connection options including USB, Bluetooth, NFC, and docking stations. Troubleshoot hardware faults and connectivity problems.
Learn protocols, ports, and wireless standards used in modern networks. Configure small office and home office networks with IP addressing, VPNs, and basic security. Use practical troubleshooting tools such as crimpers, cable testers, and Wi-Fi analyzers.
Sample question from this domain above: Q6
Install and replace RAM, CPUs, storage drives, and cooling systems. Work with cables and connectors including HDMI, Ethernet, and USB. Configure motherboards and power supplies. Install and maintain printers, scanners, and other peripherals.
Understand virtual machines, hypervisors, and desktop virtualization concepts. Learn cloud delivery models including Infrastructure as a Service, Software as a Service, and Platform as a Service. Identify when to use cloud resources versus on-site infrastructure.
Diagnose and repair hardware failures, network connectivity issues, and performance problems using systematic troubleshooting methods. Use diagnostic tools including multimeters, cable testers, loopback plugs, and software utilities to identify root causes.
Sample question from this domain above: Q2
Common questions about the exam itself