The correct answer is B. 101101. Hexadecimal is base-16. The hexadecimal value 2D equals 2 × 16 plus D.
Since hexadecimal letters A through F represent decimal values 10 through 15, D represents 13. Therefore,
2D equals 32 + 13 = 45 in decimal. In binary, 45 is 101101 because it equals 32 + 8 + 4 + 1.
Exact Extract/Reference: The CompTIA Tech+ Study Guide explains that hexadecimal is "base-16" and that letters A through F represent decimal numbers 10 through 15. It also provides the binary place values used for conversion: 128, 64, 32, 16, 8, 4, 2, and 1.
Verified and corrected questions 166-171:

In the CompTIA Tech+ Study Guide (Exam FC0-U71, 3rd Edition, 2025), the section on wireless encryption options explains:
"Exam objective 6.5 specifies that you should know Wi-Fi encryption options such as an open network, preshared key, WPA, WPA2, and WPA3... Focus on understanding that open networks are unsecure, and that WPA3 is better than WPA2, which is better than WPA." Further, it describes open networks as:
"Open portals pose security risks to the network and to users on the network. Use them with caution." Therefore, to allow anyone in the community to connect freely, the router must be set to Open (no password or encryption).
Verified Reference:
* Chapter 8: Networking Concepts and Technologies - "Wireless Security Options" (pp. 470-473).

The correct answer is B. Drivers. A printer driver is required so the operating system can communicate with the printer. If the printer is connected and appears to be set up but still does not work, an incorrect, missing, or outdated driver is the most likely cause. Services, permissions, and extensions can affect some systems, but the most direct and common issue after printer setup is driver installation.
Exact Extract/Reference: The CompTIA Tech+ Study Guide states that, in addition to connecting the printer,
"you need to install a special piece of software called a printer driver so the operating system knows how to talk to the printer." The guide also explains that after hardware installation, the operating system either detects the device automatically or the user must install a driver manually.
Verified and corrected questions 172-178:

RAM (Random Access Memory) in smartphones and computers is most commonly measured in gigabytes (GB) today. Typical smartphone RAM ranges from 2GB to 16GB depending on performance and price.
"Memory capacity in modern devices like smartphones is measured in gigabytes (GB), reflecting their need to support multitasking and app usage." - CompTIA ITF+ Official Resources Other options:
KB and MB were used in earlier computing generations.
TB is used for storage, not RAM.
Correct answer: A

Changing the router ' s password (particularly the Wi-Fi password) prevents unauthorized users from reconnecting to the network. It's the most immediate and effective response.
"One of the most effective ways to secure a wireless network is by changing the default and existing passwords to prevent unauthorized access." - CompTIA ITF+ Security Topics
* Calling support may help but doesn't address the issue directly.
* Decreasing signal range may reduce but not eliminate access.
* Resetting the router is more disruptive and unnecessary if the password can be changed.
Correct answer: C