Free CompTIA Tech+ Practice Test

Correct Answer: Hard Drive
Explanation: The hard drive (HDD or SSD) stores the operating system, applications, and files, whereas RAM provides temporary storage for active processes.

Correct Answer: Check the power settings
Explanation: Adjusting power settings, such as lowering screen brightness and enabling battery saver mode, can help improve battery life before considering hardware replacement.

Correct Answer: Enabling multi-factor authentication
Explanation: Multi-factor authentication adds an extra layer of security by requiring additional verification beyond just a password.

Correct Answer: Wi-Fi network compatibility
Explanation: The printer must be compatible with the network and connected to the correct Wi-Fi.

Correct Answer: Protects devices from power surges
Explanation: Surge protectors shield electronic devices from voltage spikes.

Correct Answer: Slow performance and unusual noises
Explanation: Clicking noises, slow performance, and frequent crashes indicate a failing hard drive.

Correct Answer: USB-C
Explanation: USB-C provides high-speed data transfer rates compared to Bluetooth, Wi-Fi, or infrared.

Correct Answer: RAM
Explanation: RAM is volatile, meaning it loses stored data when power is turned off.

Correct Answer: Encrypts internet traffic for privacy
Explanation: VPNs secure internet connections by encrypting data, providing anonymity and protection from hackers.

Correct Answer: Microsoft Office
Explanation: Microsoft Office is a productivity suite, not an operating system.

Correct Answer: SSD
Explanation: SSDs offer much faster read/write speeds than HDDs, making them ideal for performance and quick data access.

Correct Answer: Transfers audio and video signals
Explanation: HDMI transmits high-definition video and audio between devices like computers, TVs, and gaming consoles.

Correct Answer: Blocks unauthorized access to a network
Explanation: Firewalls monitor and control incoming/outgoing network traffic to protect against security threats.

Correct Answer: FAT32
Explanation: FAT32 is widely supported across Windows, macOS, and Linux, making it ideal for USB drives.

Correct Answer: Assigns IP addresses and directs traffic
Explanation: Routers manage network traffic and assign IP addresses to devices, ensuring efficient data routing.

Correct Answer: Keyboard
Explanation: A keyboard is an input device used to enter data into a computer, while monitors, printers, and speakers are output devices.

Correct Answer: Use a password reset disk or administrator account
Explanation: A password reset disk or an administrator account can be used to reset the password without losing data.

Correct Answer: Internet Protocol
Explanation: The Internet Protocol (IP) defines rules for routing and addressing data packets to ensure they reach the correct destination on a network.

Correct Answer: Power Supply Unit (PSU)
Explanation: The PSU converts AC power from the wall into the appropriate DC voltages needed by internal computer components.

Correct Answer: Ethernet
Explanation: Ethernet connections provide a direct, wired connection to the network, ensuring stable and high-speed data transfer with minimal interference.

A sandbox environment isolates testing to prevent impact on the main system. Production runs live applications, development is for coding, staging mimics production, and backup stores data, none isolating tests like a sandbox.

SNMP (Simple Network Management Protocol) enables remote configuration and monitoring of network devices like switches. FTP transfers files, HTTP serves web pages, IMAP retrieves emails, and NTP synchronizes clocks, none suitable for device configuration.

Non-functional USB ports are often caused by missing or corrupted USB drivers. BIOS settings affect hardware initialization, network adapters impact connectivity, power supply issues affect all components, and monitor connections affect display, none specific to USB.

Cross-site scripting (XSS) injects malicious code into websites, redirecting users to harmful pages. Phishing tricks users, SQL injection targets databases, brute force guesses passwords, and zero-day attacks exploit unknown vulnerabilities, none involving website redirects.

A database trigger automates actions, like logging changes, when a record is updated. Views create virtual tables, foreign keys enforce relationships, indexes improve performance, and validation rules ensure accuracy, none automating actions.

GIS (Geographic Information System) software maps and analyzes environmental data. CRM manages customers, SCM handles supply chains, CAD designs objects, and ERP integrates processes, none suitable for geographic mapping.

A load balancer distributes incoming web traffic across multiple servers for performance and reliability. Firewalls filter traffic, DHCP servers assign IPs, access points enable wireless, and switches connect devices, none handling traffic distribution.

Magnetic tape is cost-effective and durable for long-term archival of legal documents. NVMe SSDs are for high-speed access, USB drives and external HDDs are portable, and optical discs have limited capacity, none ideal for long-term storage.

A loop repeats a task until a condition is met, ideal for iterative tasks. Arrays store data, functions perform tasks, classes define objects, and variables store single values, none designed for repetition.

Full disk encryption ensures data is unreadable without the decryption key if a laptop is stolen. Biometrics authenticate users, segmentation isolates networks, intrusion detection monitors threats, and physical locks prevent theft, but encryption protects data directly.

High disk activity during multitasking suggests insufficient RAM, causing the system to use slower virtual memory on the disk. CPU affects processing, graphics cards handle visuals, network adapters manage connectivity, and power supplies provide power, none directly addressing disk activity.

A hybrid topology combines multiple topologies, like star and ring, for flexibility. Bus uses a single backbone, mesh connects all devices, tree is hierarchical, and star uses a central hub, none combining multiple types.

The software license agreement specifies usage limits and compliance requirements. Hardware specs affect performance, bandwidth impacts connectivity, permissions control access, and backups protect data, none addressing licensing.

HTTPS uses security certificates to ensure secure web connections, and an invalid certificate triggers browser warnings. FTP transfers files, HTTP is unencrypted, SNMP manages devices, and Telnet provides unsecure access, none using certificates.

A failing CMOS battery causes the system clock to reset or lose time, as it powers the CMOS chip storing time settings. RAM, graphics cards, network adapters, and storage drives do not affect the system clock.

A version control system (e.g., Git) tracks code changes and coordinates team contributions. Compilers translate code, debuggers fix errors, text editors write code, and IDEs combine tools, none specifically tracking changes.

Data normalization organizes tables to eliminate redundancy and ensure data integrity. Encryption secures data, validation checks accuracy, indexing improves query speed, and backups protect data, none addressing redundancy.

ERP (Enterprise Resource Planning) software integrates financial, HR, and inventory management for streamlined operations. CRM manages customers, SCM handles supply chains, CAD designs objects, and GIS analyzes geographic data, none integrating all specified functions.

An external HDD offers high-capacity, portable storage for offsite backups. Floppy disks are obsolete, optical discs have limited capacity, magnetic tape is for archiving, and internal SSDs are not portable, making them less suitable.

Missing or outdated sound card drivers can prevent external speakers from working. Monitor brightness affects display, network cables impact connectivity, storage health affects data, and BIOS settings control hardware initialization, none related to audio output.

A DHCP (Dynamic Host Configuration Protocol) server assigns IP addresses dynamically to devices. Switches connect devices, access points enable wireless, firewalls filter traffic, and modems connect to ISPs, none handling IP assignment.

Silent installation automates software deployment without user interaction, ideal for multiple workstations. Custom and manual installations require input, network installations use shared resources, and upgrade installations update existing software, none as efficient for mass deployment.

A single beep typically indicates a successful POST, but no display suggests a loose or faulty monitor cable. Failed RAM causes multiple beeps or crashes, overheating power supplies cause shutdowns, corrupted drives prevent booting, and outdated drivers affect software, not initial display.

A bandwidth shaper controls and allocates network bandwidth to prioritize critical tasks like file transfers. VLANs segment networks, load balancers distribute server traffic, firewalls filter data, and access point channels manage wireless connections, none directly optimizing bandwidth.

An outdated BIOS can cause slow booting and compatibility errors with modern hardware or software. Network settings affect connectivity, storage capacity impacts space, monitor resolution affects display, and keyboard drivers impact input, none of which directly cause boot errors.

A business continuity plan ensures critical systems remain operational during disruptions like power outages. Backup schedules protect data, segmentation isolates networks, encryption secures data, and intrusion detection monitors threats, none ensuring operational continuity.

 Inheritance allows a class to inherit methods and properties from a parent class. Encapsulation protects data, polymorphism enables multiple forms, abstraction hides details, and modularity organizes code, none involving class inheritance.

 Failure to power on with no lights suggests loose or faulty motherboard connections or a dead PSU. RAM causes crashes, monitor cables affect display, network adapters impact connectivity, and graphics cards affect video, not power issues.

SCM (Supply Chain Management) software tracks stock levels and shipments. CRM manages customers, CAD designs objects, ERP integrates processes, and GIS analyzes geographic data, none suited for inventory tracking.

A DMZ (Demilitarized Zone) isolates public-facing servers like web servers from the internal network for security. VLANs segment networks, subnets divide networks, LANs cover local areas, and WANs span large regions.

The video card (GPU) handles video output, and a failure can cause no display. Network adapters affect connectivity, sound cards handle audio, storage controllers manage drives, and memory modules cause crashes, not display issues.

Biometric authentication uses fingerprints for secure access. Password policies manage credentials, segmentation isolates networks, encryption secures data, and intrusion detection monitors threats, none involving biometrics.

 A data warehouse schema, like a star structure, organizes data for analytical reporting. Relational models use tables, hierarchical models use trees, network models allow complex links, and flat-file models are simple, none optimized for analytics.

Agile methodology supports frequent updates and flexibility based on user feedback. Waterfall is linear, Spiral focuses on risk, V-Model emphasizes verification, and RAD prioritizes rapid prototyping, none prioritizing iterative feedback.

Legacy keyboards often use PS/2 ports, which may require driver or compatibility fixes. USB-C, HDMI, Thunderbolt, and DisplayPort are modern ports unsuitable for legacy keyboards.

Unit testing validates individual code components before integration. Integration testing checks combined components, system testing verifies the entire system, regression testing ensures no new errors, and load testing assesses performance under stress.

NTP (Network Time Protocol) synchronizes clocks across devices for accurate logging. FTP transfers files, HTTP serves web pages, SNMP manages devices, and IMAP retrieves emails, none of which handle clock synchronization.

No display output with running fans suggests a loose or faulty monitor connection. The northbridge handles component communication, BIOS settings affect startup, power supply issues prevent fan operation, and network adapters affect connectivity, not display.

Exploit attacks target unpatched software vulnerabilities to gain access. Phishing tricks users, cross-site scripting injects code, brute force guesses passwords, and DoS disrupts services, none of which directly exploit software flaws.

A database view creates a virtual table from a query, simplifying access to complex results without altering tables. Triggers execute actions, foreign keys enforce relationships, indexes improve performance, and validation rules ensure data accuracy.

CAD (Computer-Aided Design) software is used to design buildings and physical objects. CRM manages customers, ERP integrates processes, GIS analyzes geographic data, and SCM handles supply chains, none suited for architectural design.

 In a mesh topology, every device connects directly to all others, ensuring redundancy. Star uses a central hub, ring forms a circle, bus uses a backbone, and tree is hierarchical, none offering full device-to-device connectivity.

NVMe SSDs offer high-speed access, ideal for database performance. Magnetic tape and optical discs are slow, USB drives are portable, and floppy disks are obsolete, making them unsuitable for enterprise databases.

An array stores multiple values, such as user inputs, in a single variable for processing. Variables store single values, functions perform tasks, classes define objects, and loops control flow, none of which are suitable for storing lists.

Log auditing regularly reviews system logs to detect unauthorized access attempts. Encryption secures data, segmentation isolates networks, patch management updates software, and remote wipe erases lost devices, but log auditing directly addresses login monitoring.

 Upgrading the heatsink improves heat dissipation, preventing overheating during gaming. RAM boosts performance, network adapters improve connectivity, sound cards enhance audio, and storage drives add capacity, but none address overheating.

 In a star topology, all devices connect to a central hub, simplifying troubleshooting. Ring forms a circle, bus uses a single backbone, mesh connects devices directly, and tree is hierarchical, making troubleshooting more complex.

A compatibility check verifies that software meets hardware and OS requirements, preventing deployment issues. Silent installations automate setup, network scans check connectivity, backups protect data, and training educates users, but compatibility is the priority.

HTTPS ensures secure, encrypted web browsing, and misconfiguration can slow performance. FTP transfers files, HTTP is unencrypted, SNMP manages devices, and Telnet provides unsecure remote access, none of which are relevant.

A loud grinding noise typically indicates a failing case fan with worn bearings. Overheating CPUs cause shutdowns, corrupted RAM causes crashes, failing graphics cards affect visuals, and outdated drivers cause software issues, none of which produce grinding noises.