CompTIA · 220-1101
CompTIA A+ Core 1 validates foundational IT skills in hardware, networking, mobile devices, virtualization, and cloud computing. It is the first of two exams required to earn the CompTIA A+ certification for IT support professionals.
Practice Questions
700
≈ 7 practice exams
Duration
90 minutes
Passing Score
675/900
Difficulty
FoundationalLast Updated
Mar 2026
Use this 220-1101 practice exam to prepare for CompTIA A+ Core 1 (220-1101) with realistic questions, detailed explanations, and focused study modes. The practice bank includes 700 questions for CompTIA 220-1101, so you can review the exam steadily instead of relying on one long cram session.
As you practice, pay extra attention to recurring topics such as Mobile Devices, Networking, Hardware, Virtualization and Cloud Computing, and Hardware and Network Troubleshooting. Start with short sessions to identify weak areas, then move into timed quizzes once your accuracy is consistent.
The explanations are especially useful when you want to connect exam wording to the responsibilities and scenarios described in the official certification guidance. Use the free preview first, then unlock the full question bank when you are ready to build a complete study routine.
CompTIA A+ Core 1 (220-1101) is the first exam in the two-part A+ certification series, validating foundational IT skills essential for entry-level technical support roles. This exam measures competency in hardware components, networking protocols and configuration, mobile device management, virtualization concepts, and troubleshooting methodologies. Core 1 focuses on the infrastructure and hardware foundations that support modern IT environments, while its companion exam (Core 2) addresses operating systems, security, and operational procedures. The certification is widely recognized by enterprises and government agencies, including DoD 8140 approval for technical support specialist and cybersecurity infrastructure roles.
CompTIA A+ Core 1 is designed for IT professionals pursuing foundational certification in technical support and IT operations. Target roles include IT support specialists, help desk technicians, technical support specialists, junior system administrators, and cyber defense infrastructure support specialists. Candidates typically have 12 months of hands-on experience in IT support roles, though the exam is accessible to those with formal training and self-study. This certification serves as an entry point into IT careers for individuals transitioning from other fields or those seeking to validate self-taught technical knowledge.
CompTIA recommends 12 months of hands-on experience in an IT support specialist job role before attempting the exam, though this is not a formal requirement. Candidates should have foundational knowledge of hardware components, basic networking concepts, and familiarity with Windows operating systems. Practical experience troubleshooting computers, printers, mobile devices, and SOHO networks is strongly beneficial. Those without direct experience can prepare through formal training, online courses, CompTIA study guides, and hands-on lab environments that simulate real-world IT support scenarios.
Core 1 features a maximum of 90 questions delivered in 90 minutes, with a passing score of 675 out of 900 points. Question types include multiple-choice (single answer and multiple response), drag-and-drop, and performance-based questions that simulate real IT troubleshooting tasks. The exam is administered through Pearson VUE testing centers both online and in-person. Performance-based questions require candidates to perform actual tasks such as installing hardware, configuring network settings, or troubleshooting systems within a virtual environment. The exam does not include unscored survey questions.
CompTIA A+ certification significantly enhances career prospects in IT support and technical roles. A+ certified professionals earn an average of $63,909 annually in the United States, with salaries ranging from $49,000 to over $101,000 depending on experience, location, and industry. The certification is required by numerous federal government agencies including DoD and Department of Homeland Security for specific pay grades and positions, creating substantial job opportunities in the government/defense sector which pays 20-30% above average. The Bureau of Labor Statistics projects approximately 50,500 annual job openings in technical support roles, making A+ certification a valuable credential for entering this market. Holding A+ certification demonstrates employer-valued technical competency and serves as a stepping stone to advanced certifications including Network+, Security+, and specialized cybersecurity credentials that can increase earning potential by $10,000-$15,000 or more.
5 sample questions with answers and explanations. The full bank has 700 questions, enough for 7 full-length practice exams.
Preview — answers shown1. A technician at Adatum is setting up a new desktop computer and needs to install an operating system on a 4 TB hard drive. The system must support Secure Boot. Which combination of firmware mode and partition style must the technician use? (Select one!)
Explanation
UEFI firmware with GPT partition style is required to meet both requirements. Secure Boot is exclusively a UEFI feature and cannot function in legacy BIOS mode. Additionally, GPT is required to support drives larger than 2.2 TB, which is necessary for the 4 TB hard drive. Legacy BIOS with MBR is limited to 2.2 TB maximum partition size and does not support Secure Boot. UEFI with MBR would technically boot but does not fully leverage UEFI capabilities and MBR cannot address the full 4 TB. Legacy BIOS with GPT is not a standard bootable configuration and lacks Secure Boot support entirely.
2. A systems administrator at Northwind Traders needs to set up a storage solution for a file server that requires both high read/write performance and the ability to survive the failure of a single drive without data loss. The server has four available drive bays. Which RAID level best meets these requirements? (Select one!)
Explanation
RAID 10 (1+0) combines mirroring and striping, providing both high performance and single-drive fault tolerance. With four drives, RAID 10 creates two mirrored pairs that are striped together, delivering excellent read and write performance while surviving at least one drive failure per mirror set. RAID 0 uses striping for maximum performance but has zero fault tolerance, meaning any single drive failure destroys all data. RAID 1 provides mirroring for fault tolerance but uses only two drives and does not offer the striping performance benefit. RAID 5 provides fault tolerance with distributed parity and good read performance, but write performance is lower due to parity calculation overhead. RAID 10 best balances the dual requirement of high performance and redundancy.
3. A technician at Fabrikam is troubleshooting a workstation that intermittently freezes and produces blue screen errors with memory-related stop codes. The technician suspects a RAM issue. The workstation has four DDR4 DIMMs installed at different speeds: two at 2666 MT/s and two at 3200 MT/s. What is the most likely cause of the instability, and what should the technician do to resolve it? (Select one!)
Explanation
When RAM modules of different speeds are installed together, all modules are forced to operate at the speed of the slowest module. While this downclocking generally works, mixing different RAM specifications can cause timing conflicts and instability because the modules may have different CAS latency, voltage tolerances, and timing profiles that do not harmonize well at the forced common speed. The recommended solution is to install matched modules with identical speed, capacity, and timing specifications. The 3200 MT/s modules running at 2666 MT/s would not inherently become unstable from downclocking alone — the issue is timing incompatibility between different module specifications. DDR4 fully supports four-DIMM configurations on compatible motherboards. Moving to single-channel mode would reduce performance without addressing the root cause of the incompatibility.
4. A datacenter technician at Fabrikam is installing a fiber optic patch cable between a switch and a patch panel. The technician notices the cable jacket is yellow. What type of fiber optic cable is the technician handling? (Select one!)
Explanation
A yellow jacket on a fiber optic cable indicates single-mode fiber, specifically OS2 for modern installations. Single-mode fiber has a small 8-9 micrometer core that allows a single light mode to propagate, enabling transmission over very long distances exceeding 100 kilometers using laser light sources. Multimode OM3 cables use aqua-colored jackets. Multimode OM1 cables use orange jackets. Multimode OM4 cables also use aqua or sometimes violet jackets. The color coding of fiber optic cables is an important identification method for technicians working in datacenters and patch panel environments to quickly distinguish between single-mode and multimode connections.
5. A technician at Fabrikam is preparing to image 50 new desktop workstations for deployment. Each workstation will run Windows 11 and must support Secure Boot and BitLocker drive encryption. Which two hardware requirements must the technician verify on each workstation before proceeding with the Windows 11 deployment? (Select two!)
Multiple correct answersExplanation
Windows 11 requires UEFI firmware with Secure Boot capability to validate boot loader signatures and prevent rootkit attacks during startup. Additionally, TPM 2.0 is a mandatory hardware requirement for Windows 11 and is essential for BitLocker drive encryption, which stores encryption keys securely in the TPM hardware module. TPM 1.2 is insufficient for Windows 11. Windows 11 requires a minimum of 4 GB RAM, not 8 GB, and does not require DDR5 specifically. Windows 11 with UEFI and Secure Boot requires GPT partition scheme, not MBR, as MBR is associated with legacy BIOS mode. A dedicated graphics card is not required; Windows 11 needs a DirectX 12 compatible graphics adapter, which can be integrated graphics.
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