- A
The router’s 5 GHz radio is set to a channel not supported by the laptop
Why wrong: While channel mismatch can cause issues, most modern adapters support standard 5 GHz channels; the more fundamental issue is hardware support.
- B
The laptop’s wireless adapter does not support 5 GHz frequencies
If the adapter only works on 2.4 GHz, it will never see 5 GHz networks, regardless of router settings.
- C
The 5 GHz SSID is hidden
Why wrong: A hidden SSID still appears in network scans as an unnamed network; the laptop would see it as 'Hidden Network'.
- D
Interference from microwave ovens is blocking the 5 GHz signal
Why wrong: Microwaves primarily interfere with 2.4 GHz, not 5 GHz, and would not cause a network to be invisible.
Question 993 of 1,020
Why Your Laptop Can't See 5 GHz Networks
This 220-1201 practice question tests your understanding of wireless networking technologies. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A user complains that their new laptop only sees 2.4 GHz Wi-Fi networks, not the 5 GHz network that was previously visible on their old phone. The router is dual-band and configured to broadcast both bands. What is the most likely reason the laptop cannot see the 5 GHz network?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"most likely"Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Quick Answer
The most likely reason your laptop cannot see the 5 GHz network is that its wireless adapter does not support 5 GHz frequencies. This is a hardware limitation: older or budget adapters may only support 2.4 GHz bands, typically found in 802.11b/g/n standards, while 5 GHz requires 802.11a, ac, ax, or newer. On the CompTIA A+ Core 1 220-1201 exam, this question tests your understanding of wireless compatibility and band support—a common trap is blaming router configuration or interference, but if the adapter lacks 5 GHz hardware, the network simply won’t appear in the scan list. Remember the memory tip: “If it’s not in the chip, it won’t be in the list”—check the adapter’s supported standards before troubleshooting channels or SSIDs.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The laptop’s wireless adapter does not support 5 GHz frequencies
The most likely reason is that the laptop's wireless adapter only supports 2.4 GHz frequencies. Since the old phone could see the 5 GHz network, the router's 5 GHz radio is functioning correctly, but the laptop's hardware lacks the capability to detect or connect to 5 GHz bands, which is a common limitation in budget or older laptops.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The router’s 5 GHz radio is set to a channel not supported by the laptop
Why it's wrong here
While channel mismatch can cause issues, most modern adapters support standard 5 GHz channels; the more fundamental issue is hardware support.
- ✓
The laptop’s wireless adapter does not support 5 GHz frequencies
Why this is correct
If the adapter only works on 2.4 GHz, it will never see 5 GHz networks, regardless of router settings.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
The 5 GHz SSID is hidden
Why it's wrong here
A hidden SSID still appears in network scans as an unnamed network; the laptop would see it as 'Hidden Network'.
- ✗
Interference from microwave ovens is blocking the 5 GHz signal
Why it's wrong here
Microwaves primarily interfere with 2.4 GHz, not 5 GHz, and would not cause a network to be invisible.
Common exam traps
Common exam trap: answer the scenario, not the keyword
A common misconception is that a hidden SSID or channel mismatch causes a network to be completely invisible, but the most likely reason a device cannot see a specific band is lack of hardware support for that frequency.
Detailed technical explanation
How to think about this question
Dual-band routers broadcast separate SSIDs or a single SSID on both 2.4 GHz and 5 GHz bands. The 5 GHz band uses different radio frequencies (e.g., 5.15–5.85 GHz) and requires a compatible wireless adapter that supports IEEE 802.11a/n/ac/ax on that band. Many older or entry-level laptops only include 2.4 GHz-only adapters (e.g., 802.11b/g/n), which cannot tune to 5 GHz channels. In a real-world scenario, a user might check the adapter's specifications in Device Manager (Windows) or System Information (macOS) to confirm supported bands.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A network engineer segments a warehouse floor into three subnets: 20 scanners, 5 printers, and 2 management hosts. Picking the wrong mask wastes addresses or leaves too few usable hosts. Exam questions test whether you can apply CIDR notation, calculate block size, and identify the correct usable-host range for a given prefix.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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Wireless Networking Technologies — study guide chapter
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FAQ
Questions learners often ask
What does this 220-1201 question test?
Wireless Networking Technologies — This question tests Wireless Networking Technologies — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The laptop’s wireless adapter does not support 5 GHz frequencies — The most likely reason is that the laptop's wireless adapter only supports 2.4 GHz frequencies. Since the old phone could see the 5 GHz network, the router's 5 GHz radio is functioning correctly, but the laptop's hardware lacks the capability to detect or connect to 5 GHz bands, which is a common limitation in budget or older laptops.
What should I do if I get this 220-1201 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
This 220-1201 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 220-1201 exam.
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