CompTIA Network+ (N10-007) — Question 203

A customer is reporting difficulty connecting some devices after replacing a wireless router with a new wireless 802.11ac router. The SSID, encryption and password are the same as the previous router. A technician goes on-site and notices the devices that are no longer connecting appear to be several years ago.
Which of the following is MOST likely the problem?

Answer options

• A. the password needs to be re-entered.
• B. there is a security type mismatch.
• C. there is insufficient antenna power.
• D. there is a frequency mismatch.
• E. the channel has changed.

Correct answer: D

Explanation

The most likely issue is a frequency mismatch because older devices may not support the 5 GHz band that the 802.11ac router primarily uses. While the password could be a concern, it has been confirmed to be the same, making option A less likely. Security type mismatch and insufficient antenna power are also less probable causes for older devices failing to connect in this scenario.