CompTIA Tech+ (FC0-U71) practice questions
256 free questions with answers and explanations.
- 51.A technician is setting up a wireless network in a large multi-story office building. To ensure comprehensive coverage and minimize interference, the technician plans to deploy multiple access points (APs) and configure them to operate on non-overlapping channels. For the 2.4 GHz band, which combination of channels should the technician primarily use?Infrastructure
- 52.A network technician is configuring a new wireless access point and needs to ensure that the network name (SSID) is not broadcast to prevent easy discovery. Which configuration setting should the technician modify?IT Concepts and Terminology
- 53.A technician is performing a clean installation of Windows 10 on a new workstation. During the installation process, they are prompted to choose a file system for the primary partition. Which file system is the MOST appropriate choice for a modern Windows operating system?Applications and Software
- 54.A user is attempting to access a website and notices that the URL begins with 'http://' instead of 'https://'. Additionally, the browser displays a warning about the connection not being secure. Which security concept is primarily lacking in this scenario?Security
- 55.A technician needs to write a SQL statement that retrieves every column of data from a table named Employees. Which statement is correct?Data and Database Fundamentals
- 56.A network administrator needs to represent a subnet mask in hexadecimal format. Given the subnet mask 255.255.255.0, what is its correct hexadecimal representation?IT Concepts and Terminology
- 57.A technician is setting up a new server that requires highly resilient storage for critical database files. The solution must tolerate the failure of up to TWO drives simultaneously without data loss. Which RAID level would meet this requirement?Infrastructure
- 58.A user complains that their computer's clock frequently loses time, even after manually setting it. They also report that sometimes the system settings revert to defaults after a reboot. Which component is MOST likely failing?IT Concepts and Terminology
- 59.A system administrator is deploying a new server that requires high availability and extremely fast storage access for a database. The budget allows for a solution that combines the speed benefits of SSDs with the redundancy of a mirrored array. Which RAID level would best meet these requirements?Infrastructure
- 60.A software developer is creating an application that needs to be accessible from any device (desktop, laptop, tablet, smartphone) with an internet connection, without requiring a specific operating system or installation process. The application should run within a web browser. Which type of application is the developer building?Applications and Software
- 61.A retail manager reviews a monthly sales dashboard and notices a steady three-month decline in sales for one product line. Based on this trend, the manager decides to discount that product line to boost sales. This scenario is an example of which concept?Data and Database Fundamentals
- 62.A technician is upgrading RAM in a thin laptop and needs a memory module in the correct compact form factor. Which type of RAM module should the technician use?Infrastructure
- 63.A system administrator is analyzing log files and encounters an error code represented as 0x000000FF. This notation indicates which base number system?IT Concepts and Terminology
- 64.A technician is installing a new application that requires specific environmental variables to be set for it to function correctly. The application needs to run for all users on the system and persist across reboots. Where should these environmental variables be configured on a Windows operating system?Applications and Software
- 65.A small business owner wants a backup strategy where every file and folder on the server is copied in its entirety each time a backup runs, regardless of whether the files have changed. Which backup type is being described?Data and Database Fundamentals
- 66.A company requires employees to use strong passwords, defined as having at least 12 characters, including uppercase, lowercase, numbers, and special symbols. Additionally, passwords must be changed every 90 days. Which security policy element is NOT directly addressed by these requirements?Security
- 67.A user reports that their new printer is not functioning correctly. The technician asks the user to describe the issue, checks the power and cable connections, and then attempts to print a test page. Which stage of the troubleshooting methodology is the technician currently performing?IT Concepts and Terminology
- 68.A technician queries a Customers table and notices that the MiddleName field is empty for several customers who simply do not have a middle name on file. How should this value be represented in the database to indicate no data exists?Data and Database Fundamentals
- 69.A technician is troubleshooting a system that is exhibiting slow performance. They observe that the hard drive activity light is constantly on, even when no applications are actively being used. Which of the following is the MOST likely cause of this symptom?IT Concepts and Terminology
- 70.A developer is creating a program that needs to store a collection of unique email addresses. Which of the following data structures is most suitable for this requirement?Software Development Concepts
- 71.A technician needs to connect an external SSD that must support transfer speeds up to 10 Gbps. Which port should the technician use?Infrastructure
- 72.A user is attempting to install an application on their Windows computer, but the installation fails with an error message indicating that 'Visual C++ Redistributable' is missing. This application is a common dependency for many Windows programs. What type of software component is the Visual C++ Redistributable, and why is it often required?Applications and Software
- 73.A company is setting up a secure wireless network for its employees. To comply with security best practices, they need to select the strongest available encryption protocol for Wi-Fi. Which of the following Wi-Fi security protocols should they implement?Security
- 74.A small business owner is concerned about employees accidentally downloading malicious files from the internet while browsing. Which security measure would be most effective in preventing this specific type of threat?Security
- 75.A new employee plugs a laptop into the office network via Ethernet and is immediately able to browse the internet without any manual network configuration. Which service most likely assigned the IP address automatically?Infrastructure
- 76.A technician is installing an internal storage drive and wants the fastest possible speed by using the PCIe interface directly, rather than the older SATA interface. Which storage form factor and protocol combination should the technician select?Infrastructure
- 77.A user is experiencing issues with a recently installed application on their Windows 10 computer. The application frequently crashes, and some of its icons appear corrupted. The user suspects that critical system files might have been accidentally deleted or corrupted. Which built-in Windows utility should the technician use FIRST to diagnose and repair potential system file corruption?Applications and Software
- 78.A company is concerned about employees installing unauthorized software or accessing malicious websites. They want to implement a solution that can inspect encrypted network traffic to identify and block such activities. Which security technology is designed to perform this function?Security
- 79.A technician is setting up a new virtual machine (VM) for a development environment. The VM needs to run a specialized application that requires direct access to hardware functions, such as specific GPU capabilities, for optimal performance. Which type of hypervisor would be MOST appropriate for this scenario?Applications and Software
- 80.A database administrator opens a Customers table and looks at the row containing all the information for one specific customer, including their name, address, and phone number. What is this single row called?Data and Database Fundamentals
- 81.A user reports that their desktop computer suddenly started making a loud grinding noise and is now unable to boot into the operating system. Upon inspection, the technician hears the noise coming from inside the computer case. Which component is the MOST likely cause of this issue?Infrastructure
- 82.A security analyst is reviewing network traffic logs and observes a high volume of failed login attempts originating from multiple IP addresses targeting a specific SSH server over a short period. This activity is indicative of which type of attack?Security
- 83.A technician needs a report that lists each order along with the customer's name, but the Orders table only stores a CustomerID while the customer names are stored in a separate Customers table. Which SQL concept allows the technician to combine matching rows from both tables into a single result set?Data and Database Fundamentals
- 84.A user wants to connect a wireless keyboard to a tablet without using a router or internet connection, and the devices must be within a few feet of each other. Which wireless technology is being used?Infrastructure
- 85.A manager wants a single SQL query that returns the total number of orders placed by each customer from an Orders table, grouped by CustomerID. Which SQL clause combination is required to achieve this?Data and Database Fundamentals
- 86.A user needs to share a large video file (5 GB) with a colleague who is located in a different city. The user also wants to ensure the file is encrypted during transit and at rest. Which of the following methods is MOST appropriate for meeting these requirements?Applications and Software
- 87.A developer is writing a program to manage customer orders. Each order has properties like 'OrderID', 'CustomerName', and 'TotalAmount'. Which programming concept allows grouping these related properties and associated actions into a single unit?Software Development Concepts
- 88.A startup wants to develop and deploy custom web applications without managing the underlying operating system, servers, or storage infrastructure, but still needs control over the application code and runtime environment. Which cloud service model best fits this need?Infrastructure
- 89.A technician needs to find only the employees who work in the Sales department from an Employees table. Which SQL query accomplishes this?Data and Database Fundamentals
- 90.A security analyst is investigating network traffic and observes a data packet with a destination port of 22. What service is MOST likely being targeted or used by this packet?IT Concepts and Terminology
- 91.A technician is connecting a laptop to an external 4K monitor and wants the single cable to carry both high-resolution video and multi-channel audio while also supporting daisy-chaining multiple monitors. Which port should the technician use?Infrastructure
- 92.A technician is installing a new antivirus solution on a corporate network. After installation, the antivirus software detects a file that attempts to modify the operating system's boot sector and remain hidden from detection. This behavior is characteristic of which type of malware?Security
- 93.A technician is debugging a script that should display a greeting only if the user is logged in AND has administrator privileges. Which logical operator should be used to combine these two conditions?Software Development Concepts
- 94.A technician runs a SQL query to list all employees from an Employees table but wants the results displayed alphabetically by last name. Which clause should be added to the SELECT statement to achieve this?Data and Database Fundamentals
- 95.A company performs a full backup every Sunday night and an incremental backup every other night of the week. What data does Wednesday night's incremental backup capture?Data and Database Fundamentals
- 96.A retail customer taps their smartphone against a payment terminal to complete a purchase without opening any app or entering a PIN. Which wireless technology enables this short-range contactless communication?Infrastructure
- 97.A network administrator is configuring a new firewall for a company. The company policy states that all network traffic not explicitly allowed should be blocked by default. Which firewall rule concept is being applied here?Security
- 98.A technician is configuring a new storage array and needs to ensure that data can be recovered even if one drive fails, while also maximizing storage efficiency. Which RAID level would be the MOST appropriate choice?IT Concepts and Terminology
- 99.A company wants a virtualization solution that runs directly on server hardware without requiring a host operating system, in order to maximize performance and resource allocation for multiple virtual machines. Which type of hypervisor should be deployed?Infrastructure
- 100.A user is attempting to log in to an online banking portal. After entering their username and password, the system prompts them to enter a six-digit code sent to their registered mobile phone. This authentication method is an example of which of the following?Security