TheoryCOMPTIA A+
Practice Test
Practice for CompTIA A+ with hardware, networking, troubleshooting and security review, plus video and PDF study links.
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CompTIA A+ sample questions
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Core1 Hardware An organization is upgrading its internal network to achieve data transfer rates that can handle high-resolution video streaming and extensive data backups efficiently, requiring speeds of at least 1 Gbps. Which two types of cables should they consider using?
A. CAT-5, CAT-7
B. CAT-5, CAT-3
C. MMF Fiber, Coaxial
D. MMF Fiber, CAT-7 ✓
Correct — D. Answer: MMF Fiber, CAT-7 Multimode Fiber (MMF) and CAT-7 cables can support the high data transfer rates required. MMF fiber can use either the 1000BaseLX or 1000BaseSX Ethernet specifications to support speeds up to 10 Gbps. Cat-7 cables use the 10GBaseT specification and can support speeds up to 10 Gbps. CAT-5 supports up to 100 Mbps, CAT-3 supports up to 10 Mbps, and Coaxial supports up to 400 Mbps.
Core1 Virtualization And Cloud Computing Which of the following can impact the scalability of a cloud-based application?
A. Number of concurrent users
B. Database throughput
C. Network bandwidth ✓
D. Application logic
Correct — C. Answer: Network bandwidth Network bandwidth can be a critical limiting factor for the scalability of cloud-based applications. If the available bandwidth is insufficient, it can lead to slow data transfers, increased latency, and ultimately a degraded user experience. Ensuring adequate network bandwidth is essential for scaling applications effectively in the cloud. Although other factors like the number of concurrent users, the application logic, and database throughput are also important, network bandwidth is often the most immediate bottleneck when scaling cloud applications.
Core1 Networking What is the primary distinction between IPv4 and IPv6?
A. IPv4 uses a 32-bit address, while IPv6 uses a 128-bit address. ✓
B. Both protocols support the same number of addresses, but IPv6 is faster.
C. IPv4 is used exclusively for local networks, while IPv6 is used for global networks.
D. IPv6 addresses are typically cheaper to obtain than IPv4 addresses.
Correct — A. Answer: IPv4 uses a 32-bit address, while IPv6 uses a 128-bit address. IPv4 addresses consist of four octets (32 bits), which allows for approximately 4.3 billion unique addresses. IPv6 addresses, on the other hand, consist of 128 bits, significantly expanding the number of available addresses to accommodate the growing number of devices on the Internet. The speed of the protocol and the operating systems supporting them are not determinants in distinguishing between IPv4 and IPv6. Cost is also not a factor in differentiating these two protocols.
Core1 Hardware And Network Troubleshooting What could be the cause of a slow and unresponsive wired network during specific times of the day?
A. Hardware failure in the router
B. Wireless interference
C. Incorrect network configuration
D. High usage periods causing network congestion ✓
Correct — D. Answer: High usage periods causing network congestion Slow and unresponsive wired networks during specific times of the day are often caused by high user traffic which leads to network congestion. This can happen when many users are trying to access the network simultaneously, exhausting available bandwidth. Hardware failure in the router typically results in a completely non-functional network, not just slow performance. Wireless interference affects wireless networks, not wired ones. Incorrect network configuration may cause connectivity issues but is unlikely to solely cause slow network performance during specific times.
Core1 Mobile Devices Which technology can ensure secure web browsing on mobile devices?
A. VPN
B. Bluetooth
C. HTTPS ✓
D. WPA2
Correct — C. Answer: HTTPS Hyper Text Transfer Protocol Secure (HTTPS) uses SSL/TLS to provide encryption for web browsing, ensuring data security over the web. Wi-Fi Protected Access II (WPA2) is used to secure wireless networks, not specific to web browsing. Virtual Private Network (VPN) secures internet connections but is a more general solution. Bluetooth is used for short-range data transfer and does not specifically secure web browsing.
Core1 Hardware What component of a computer is most susceptible to ESD (Electrostatic Discharge)?
A. Cooling fan
B. RAM modules ✓
C. Power supply unit
D. Hard drive
Correct — B. RAM modules are the most susceptible to Electrostatic Discharge (ESD). ESD can damage the delicate circuitry within RAM, affecting the computer's performance or rendering the memory unusable. Care should be taken to properly ground oneself before handling RAM.
Core1 Virtualization And Cloud Computing A company wants to deploy applications quickly across multiple virtual machines in a cloud environment without involving the cloud provider every time. Which of the following features should they look for?
A. Broad Network Access
B. Resource Pooling
C. Rapid Elasticity
D. On-Demand Self-Service ✓
Correct — D. Answer: On-Demand Self-Service On-demand self-service allows customers to manage cloud resources as needed without needing intervention from the service provider. This feature is critical for the quick deployment and scalability of applications in a cloud environment. Broad network access ensures availability across different devices, resource pooling allows shared resources for multiple clients, and rapid elasticity provides the ability to scale resources up or down based on demand.
Core1 Networking Which device is used to test the functionality and reliability of network cables?
A. Multimeter
B. Punchdown tool
C. Cable tester ✓
D. Toner probe
Correct — C. Correct answer: Cable tester A cable tester is specifically designed to assess the operability and configuration of network cables. It can identify issues such as open circuits, short circuits, miswires, and split pairs. A toner probe helps locate the start and end points of a cable. A multimeter measures current, resistance, and voltage on a wire but is not specialized for testing network cable integrity. A punchdown tool is used to connect network cables to a patch panel or socket.
About the CompTIA A+ test
The CompTIA A+ measures the IT & Cybersecurity knowledge you'll actually rely on — tested the way the real exam asks it, not with trick questions. Practising real CompTIA A+-style questions, then sitting a full timed mock exam, is the fastest way to walk in knowing you'll pass.
You will be tested on
- The core topics and terminology you'll be tested on
- Rules, standards and best-practice procedures
- Real-world scenarios and how to respond
- Common mistakes and how to avoid them
How TheoryPractice helps you pass
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Topics in this question bank
The core topics and terminology you'll be tested on
Rules, standards and best-practice procedures
Real-world scenarios and how to respond
Common mistakes and how to avoid them
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