220-1101 Wireless Networking Technologies Practice Question
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 client reports that their new 802.11ac laptop cannot connect to the office Wi-Fi, while older 802.11n devices work fine. The access point is a dual-band model. Which of the following is the MOST likely reason?
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.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The 5 GHz radio on the access point is disabled.
802.11ac operates exclusively on the 5 GHz band, so if the 5 GHz radio is disabled or the SSID is hidden, the laptop cannot connect. This tests knowledge of 802.11ac's band requirement and dual-band configuration.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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 laptop's Wi-Fi antenna is damaged.
Why it's wrong here
Antenna damage would prevent connection to any network, not just 802.11ac, and other devices work fine.
✓
The 5 GHz radio on the access point is disabled.
Why this is correct
802.11ac requires 5 GHz; if that radio is off, the laptop cannot see the network, while 2.4 GHz-only 802.11n devices still connect.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Static NAT maps one inside address to one outside address.
✗
The laptop's drivers are not compatible with 802.11n.
Why it's wrong here
The laptop is 802.11ac, which is backward compatible with 802.11n, so driver incompatibility is unlikely.
✗
The access point is set to 802.11b-only mode.
Why it's wrong here
802.11b-only mode would prevent all 802.11n and ac devices from connecting, contradicting the report that older 802.11n devices work.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
How this comes up in practice
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this 220-1201 question in full detail.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 220-1201 NAT questions on configuration and troubleshooting.
Wireless Networking Technologies — This question tests Wireless Networking Technologies — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: The 5 GHz radio on the access point is disabled. — 802.11ac operates exclusively on the 5 GHz band, so if the 5 GHz radio is disabled or the SSID is hidden, the laptop cannot connect. This tests knowledge of 802.11ac's band requirement and dual-band configuration.
What should I do if I get this 220-1201 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 220-1201 NAT questions on configuration and troubleshooting.
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?
Static NAT maps one inside address to one outside address.
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