CompTIA FC0-U71 - CompTIA Tech+ Certification Exam

The CompTIA Tech+ Study Guide provides a conversion table for storage units:

“1 bit = 1 bit, a single 0 or 1.

8 bits = 1 byte (one text character).

1,000 bytes = 1 kilobyte (KB).”

Thus, 8 bits equals 1 byte.

Verified Reference:

Chapter 1: Core Hardware Components — Table 1.2 “Bit and Byte Conversions” (p. 36).

The units from smallest to largest are:

MB (Megabyte)

GB (Gigabyte)

TB (Terabyte)

PB (Petabyte)

Thus, PB (Petabyte) is the largest unit listed.

“Data storage is measured in bytes, with increasing units from kilobytes (KB) to megabytes (MB), gigabytes (GB), terabytes (TB), and petabytes (PB).” — CompTIA ITF+ Study Guide

Correct answer: C

According to the CompTIA Tech+ Study Guide:

“Changing Default Usernames and Passwords — The first thing a potential hacker will try to use is the default username or password for a device. Always change them.”

It also emphasizes:

“Enabling passwords and changing default usernames and passwords are essential password management best practices.”

Therefore, the correct action after server setup is to change the default usernames and passwords to secure the system.

Verified Reference:

Chapter 11: Security Best Practices — “Managing Passwords” (pp. 594–595).

Process management in an operating system is responsible for controlling the execution of applications, assigning CPU time, and prioritizing active processes to optimize performance.

“Process management allocates resources, prioritizes applications, and ensures multitasking is efficiently handled by the OS.” — CompTIA ITF+ Operating Systems Guide

Correct answer: B

When a new vulnerability is discovered in software, the best way to secure it is by applying updates (patches) released by the software vendor. According to the CompTIA ITF+ objectives:

“Vendors regularly release software updates and security patches to fix vulnerabilities that could be exploited by attackers. Installing these patches promptly is crucial for maintaining system security.”

Although configuring a firewall and authentication improves overall security, they do not directly patch or fix the vulnerability. Uninstalling may be an option only if a patch is unavailable or the software is no longer needed. Therefore, the best and most proactive response is B: Apply updates.

According to the CompTIA Tech+ Study Guide (Exam FC0-U71, 3rd Edition, 2025), one of the five critical steps when configuring a wireless router is to change the administrator username and password:

“The Wi-Fi Alliance lists five critical keys to setting up a secured wireless router:

Change the router’s SSID.

Change the administrator username and password. Make sure that it’s a strong password.

Enable WPA3 or WPA2 Personal.

Choose a strong security passphrase.

Connect clients using the same security mode.”

This ensures unauthorized users cannot log in to the router’s settings.

Verified Reference:

Chapter 8: Networking Concepts and Technologies — “Setting Up a Small Wireless Network” (pp. 463–467).

Task management tools such as Task Manager in Windows or Activity Monitor in macOS allow users to monitor running applications and processes. They also provide the functionality to force-close (end) applications that are not responding.

“Task Manager provides a way to close applications that are unresponsive and manage running processes.” — CompTIA ITF+ Official Guide

Correct answer: A

The CompTIA Tech+ Study Guide (Exam FC0-U71, 3rd Edition, 2025) clearly states:

“If you need to have multiple concurrent users accessing data, you need a database. Flat files don’t do well when several people try to access them at once. In the vast majority of cases, one user might be able to write to the file, but all users will be limited to a read-only copy.”

It further explains that:

“Databases generally lock only on a record level (or individual line of data), so multiple people can actively use the database at one time.”

Therefore, the best reason to convert a large spreadsheet to a database is to allow multiple concurrent users to access and update the data simultaneously without conflicts.

Verified Reference:

Chapter 7: Database Fundamentals — “When to Use Databases” (pp. 389–391).

The largest unit is determined by converting all values to the same unit:

2TB = 2,000GB

100GB = 100GB

4,000MB = 4GB

50KB = 0.00005GB

Thus, 2TB is the largest. As described in the CompTIA ITF+ FC0-U71 Study Guide:

“Data storage capacity is measured using standard units such as KB, MB, GB, and TB, where 1TB = 1,000GB.”