220-1201 Mobile Device Connection Methods Practice Question
This 220-1201 practice question tests your understanding of mobile device connection methods. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 wants to connect their laptop to a 4K external monitor for a presentation. The laptop has USB-C ports, and the monitor supports HDMI and DisplayPort. Which adapter or cable should the technician recommend for the best video quality?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Why wrong: VGA is analog and supports only lower resolutions, not 4K.
B
USB-C to HDMI adapter
Why wrong: This can work but may not support 4K at 60Hz if the laptop's USB-C port only supports DisplayPort alternate mode; also, HDMI can be limited by version.
C
USB-C to DisplayPort cable
USB-C often supports DisplayPort alternate mode natively, providing uncompressed 4K video at high refresh rates, making it the best choice.
D
USB-C to DVI adapter
Why wrong: DVI is older and typically limited to 1920x1200, not 4K.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
USB-C to DisplayPort cable
USB-C can carry DisplayPort signals natively, so a USB-C to DisplayPort cable supports 4K at high refresh rates without compression. HDMI may also work but depends on the laptop's alternate mode support.
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.
✗
USB-C to VGA adapter
Why it's wrong here
VGA is analog and supports only lower resolutions, not 4K.
✗
USB-C to HDMI adapter
Why it's wrong here
This can work but may not support 4K at 60Hz if the laptop's USB-C port only supports DisplayPort alternate mode; also, HDMI can be limited by version.
✓
USB-C to DisplayPort cable
Why this is correct
USB-C often supports DisplayPort alternate mode natively, providing uncompressed 4K video at high refresh rates, making it the best choice.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Static NAT maps one inside address to one outside address.
✗
USB-C to DVI adapter
Why it's wrong here
DVI is older and typically limited to 1920x1200, not 4K.
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.
Mobile Device Connection Methods — This question tests Mobile Device Connection Methods — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: USB-C to DisplayPort cable — USB-C can carry DisplayPort signals natively, so a USB-C to DisplayPort cable supports 4K at high refresh rates without compression. HDMI may also work but depends on the laptop's alternate mode support.
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: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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