View Full CompTIA Tech+ FC0-U71 Exam Dumps and Practice Test Dumps

 

Question 61.

Which type of storage is considered volatile and loses its contents when power is removed?

1. SSD
   2. RAM
   3. USB flash drive
   4. Optical disc

Correct Answer: 2. RAM

Explanation:

RAM is volatile memory used to temporarily store instructions and data that the processor needs while the computer is operating. When power is removed, the contents of RAM are normally lost. SSDs, USB flash drives, and optical discs are nonvolatile storage technologies because they retain information after the system is powered off. RAM is much faster than long-term storage and plays an important role in application performance and multitasking. Systems with insufficient RAM may rely more heavily on slower storage-based virtual memory.

Question 62.

Which computer component is primarily responsible for executing program instructions?

1. CPU
   2. Monitor
   3. SSD
   4. Power supply

Correct Answer: 1. CPU

Explanation:

The CPU, or central processing unit, executes instructions and performs arithmetic, logical, and control operations required by software. It works closely with memory, storage, and other system components. A monitor displays visual output, an SSD stores information persistently, and the power supply converts electrical power for use by computer components. CPU performance depends on factors such as architecture, clock speed, core count, cache, and workload. Understanding the CPU’s role is fundamental to recognizing how software is processed by a computer.

Question 63.

Which component converts incoming electrical power into voltages that computer hardware can use?

1. Motherboard
   2. CPU
   3. Power supply unit
   4. RAM

Correct Answer: 3. Power supply unit

Explanation:

The power supply unit, or PSU, converts incoming electrical power into regulated voltages required by computer components. It supplies power to the motherboard, processor, storage devices, graphics card, and other hardware. The motherboard connects components and provides communication pathways, while the CPU processes instructions and RAM provides volatile memory. A failing or insufficient power supply can cause instability, unexpected shutdowns, or a complete failure to start. Replacement power supplies must provide appropriate wattage, connectors, and form-factor compatibility.

Question 64.

Which component provides the main circuit board that connects the CPU, memory, storage interfaces, and expansion devices?

1. SSD
   2. Power supply
   3. Cooling fan
   4. Motherboard

Correct Answer: 4. Motherboard

Explanation:

The motherboard is the main circuit board in a computer. It provides sockets, slots, connectors, and communication pathways for the CPU, RAM, storage devices, expansion cards, firmware, and peripheral interfaces. The power supply delivers electrical power, storage devices retain data, and cooling fans help remove heat. Motherboards come in different form factors and support particular processor sockets, memory types, interfaces, and expansion standards. Hardware compatibility must therefore be checked when replacing or upgrading major system components.

Question 65.

Which device is most appropriate for long-term persistent storage of the operating system and user files?

1. SSD
   2. CPU cache
   3. RAM
   4. Register

Correct Answer: 1. SSD

Explanation:

An SSD provides nonvolatile storage, meaning its contents remain available after power is removed. It is commonly used to store the operating system, applications, documents, and other user data. RAM, CPU cache, and processor registers provide much faster temporary storage but are volatile and are not designed for long-term file retention. SSDs generally offer faster startup and application-loading performance than traditional mechanical hard drives because they do not require moving read/write heads or rotating platters.

Question 66.

Which display connector commonly carries both digital video and digital audio over one cable?

1. VGA
   2. HDMI
   3. PS/2
   4. Serial port

Correct Answer: 2. HDMI

Explanation:

HDMI is commonly used to carry both digital video and digital audio between devices such as computers, monitors, televisions, and projectors. VGA is an older analog video interface and does not normally carry audio. PS/2 is associated with legacy keyboards and mice, while serial ports are used for older communication and specialized equipment. HDMI versions support different resolutions, refresh rates, and features, so cable and device capabilities should be considered when troubleshooting display problems.

Question 67.

Which connector is commonly used for wired Ethernet networking?

1. HDMI
   2. USB-C
   3. RJ-45
   4. 3.5 mm audio jack

Correct Answer: 3. RJ-45

Explanation:

RJ-45 is the common connector associated with twisted-pair Ethernet cabling. Ethernet cables connect computers, switches, routers, access points, and other network devices. HDMI carries audio and video, USB-C is a multipurpose peripheral connector, and a 3.5 mm jack is commonly used for analog audio. Ethernet connections can support different speeds depending on the network interface, cabling category, switch capability, and configuration. A damaged cable or loose connector can cause intermittent or complete network failure.

Question 68.

Which peripheral is primarily used to convert a paper document into a digital image?

1. Printer
   2. Speaker
   3. Projector
   4. Scanner

Correct Answer: 4. Scanner

Explanation:

A scanner captures text or images from physical documents and converts them into digital form. The resulting files can be stored, edited, emailed, or processed with applications such as optical character recognition software. Printers perform the opposite general task by producing physical output from digital files. Speakers produce audio output, and projectors display visual information on a larger surface. Some multifunction devices combine scanning, printing, copying, and fax capabilities in one unit.

Question 69.

Which operating system feature allows several applications to run apparently at the same time?

1. Multitasking
   2. Formatting
   3. Encryption only
   4. Compression

Correct Answer: 1. Multitasking

Explanation:

Multitasking allows an operating system to manage multiple running applications and processes by allocating processor time and other resources among them. Modern multi-core processors can also execute multiple tasks in parallel under suitable conditions. Formatting prepares storage for use, encryption protects information from unauthorized access, and compression reduces data size. Multitasking is fundamental to modern computing because users commonly run browsers, communication tools, background services, and productivity applications simultaneously.

Question 70.

Which operating system concept separates a user’s files and settings from those of other users?

1. BIOS configuration
   2. User account
   3. CPU clock speed
   4. Screen resolution

Correct Answer: 2. User account

Explanation:

A user account identifies a person or role to an operating system and can maintain separate files, preferences, permissions, and application settings. Accounts also support authentication and access control. BIOS or UEFI settings operate at the firmware level, CPU clock speed relates to processing, and screen resolution controls display dimensions. Using separate accounts improves privacy, accountability, and security. Administrative privileges should generally be limited according to the principle of least privilege.

Question 71.

Which command-line interface characteristic distinguishes it from a graphical user interface?

1. It requires a mouse for every task
   2. It cannot automate tasks
   3. It primarily accepts typed commands
   4. It cannot manage files

Correct Answer: 3. It primarily accepts typed commands

Explanation:

A command-line interface, or CLI, allows users to interact with a system primarily by typing commands. It can be highly efficient for administration, scripting, automation, and repetitive tasks. A graphical user interface relies more heavily on windows, icons, menus, and pointer-based interaction. CLIs can manage files, configure systems, run applications, and automate complex operations. Users need to understand the required syntax because incorrect commands can produce errors or unintended changes.

Question 72.

Which software update type is primarily intended to fix known defects or security vulnerabilities?

1. Wallpaper change
   2. User profile
   3. File shortcut
   4. Patch

Correct Answer: 4. Patch

Explanation:

A patch is a software update intended to correct defects, address security vulnerabilities, or improve stability. Keeping operating systems and applications patched reduces exposure to known security weaknesses and can resolve functional problems. Wallpapers, user profiles, and shortcuts do not repair software vulnerabilities. Organizations often test important patches before broad deployment to reduce compatibility risk. Users should obtain patches from trusted sources and avoid unexpected update prompts from suspicious websites.

Question 73.

Which practice helps protect important files if a storage device suddenly fails?

1. Maintain regular backups
   2. Disable updates permanently
   3. Store every file only on one drive
   4. Share passwords with coworkers

Correct Answer: 1. Maintain regular backups

Explanation:

Regular backups provide additional copies of important data so files can be recovered if the original storage device fails, data is deleted, malware damages files, or a system is lost. A good backup strategy uses more than one copy and should include protection against failures affecting the primary device. Backups also need periodic testing because a backup that cannot be restored provides little practical value. Storing all information on one drive creates a single point of failure.

Question 74.

Which security control is primarily designed to monitor and filter network traffic according to configured rules?

1. Spreadsheet
   2. Firewall
   3. Word processor
   4. Printer driver

Correct Answer: 2. Firewall

Explanation:

A firewall filters network traffic according to security rules. It can permit or block connections based on factors such as addresses, ports, protocols, applications, or connection state. Firewalls may be implemented in software, hardware appliances, cloud services, or integrated network devices. They are an important security layer but should not be viewed as a complete security solution. Strong passwords, multifactor authentication, software updates, endpoint protection, backups, and user awareness remain important as well.

Question 75.

Which security threat involves malicious software secretly recording a user’s keystrokes?

1. Firewall
   2. VPN
   3. Keylogger
   4. Patch

Correct Answer: 3. Keylogger

Explanation:

A keylogger records keyboard input and may be used maliciously to capture passwords, messages, financial information, and other sensitive data. Keylogging can be implemented through software or, in some cases, physical hardware. Firewalls, VPNs, and patches are defensive technologies rather than keylogging threats. Security measures such as endpoint protection, software updates, restricted administrative privileges, and cautious handling of suspicious downloads can help reduce the risk of malicious keylogging.

Question 76.

Which action is the safest response when software unexpectedly asks for administrator privileges from an unknown publisher?

1. Approve it automatically
   2. Disable antivirus first
   3. Enter credentials without checking
   4. Verify the software and publisher before allowing elevation

Correct Answer: 4. Verify the software and publisher before allowing elevation

Explanation:

Administrator privileges allow software to make significant system changes, so unexpected elevation requests should be treated cautiously. The user should verify that the application was intentionally launched, came from a trusted source, and has a legitimate reason to require elevated permissions. Automatically approving unknown software can allow malware to gain extensive control. Security warnings should not be disabled merely to make installation easier. Least privilege reduces the potential impact of untrusted or compromised applications.

Question 77.

Which security concept means confirming that a user is who they claim to be?

1. Authentication
   2. Authorization
   3. Compression
   4. Availability

Correct Answer: 1. Authentication

Explanation:

Authentication verifies identity. Examples include passwords, security keys, one-time codes, and biometric methods. Authorization occurs after identity is established and determines what the authenticated user is permitted to access or perform. Compression reduces data size, while availability concerns whether systems and information are accessible when needed. Keeping authentication and authorization conceptually separate is important because successfully proving identity does not automatically mean a user should receive unrestricted access.

Question 78.

Which security concept determines what an authenticated user is permitted to access?

1. Authentication
   2. Authorization
   3. Encoding
   4. Compression

Correct Answer: 2. Authorization

Explanation:

Authorization determines which resources and actions an authenticated user is allowed to access. For example, an employee may successfully authenticate to a company network but be authorized to access only certain files or applications. Authentication establishes identity, while authorization applies permissions to that identity. Organizations commonly combine role-based access, group memberships, and least privilege to manage authorization. Proper access controls reduce the risk that a compromised or misused account will expose unnecessary resources.

Question 79.

Which attack attempts to overwhelm a service with excessive traffic so legitimate users cannot access it?

1. Phishing
   2. Shoulder surfing
   3. Denial-of-service attack
   4. Password manager

Correct Answer: 3. Denial-of-service attack

Explanation:

A denial-of-service attack attempts to make a system or service unavailable by exhausting resources or overwhelming it with traffic or requests. Distributed denial-of-service attacks use many systems to generate traffic simultaneously. Phishing attempts to deceive users, while shoulder surfing involves observing sensitive information directly. A password manager is a defensive tool. Organizations may use traffic filtering, rate limiting, redundant infrastructure, monitoring, and specialized mitigation services to improve resilience against denial-of-service conditions.

Question 80.

A user reports that a laptop connects to Wi-Fi but cannot access any websites, while other devices on the same network work normally. What is the best next troubleshooting step?

1. Replace the wireless router immediately
   2. Reinstall every application
   3. Replace the laptop motherboard
   4. Check the laptop’s IP configuration and test local network connectivity

Correct Answer: 4. Check the laptop’s IP configuration and test local network connectivity

Explanation:

Because other devices work normally, the problem is likely specific to the affected laptop rather than the entire network. The next step should be to inspect its IP address, default gateway, DNS configuration, and connection status and then test whether it can reach local resources or the gateway. This helps determine whether the issue involves addressing, DNS, local configuration, or another client-specific problem. Replacing major hardware or reinstalling applications before collecting evidence would be premature and inconsistent with a structured troubleshooting methodology.