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Question 680 of 1,052
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CCNA Practice Question: Which TWO statements accurately describe…
This 200-301 practice question tests your understanding of which two statements accurately describe…. 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.
Which TWO statements accurately describe characteristics of copper and fiber optic cabling used in modern Ethernet networks?
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
✓
Fiber optic cables are immune to electromagnetic interference (EMI).
This question tests your understanding of fundamental differences between copper and fiber cabling. Option B is correct because fiber optic cables use light pulses and are immune to electromagnetic interference (EMI), making them ideal for high-interference environments. Option D is correct because single-mode fiber is designed for long-distance transmission (up to 40 km or more) with a narrow core that reduces signal dispersion. Option A is incorrect because UTP cables are limited to approximately 100 meters (328 feet) for Ethernet. Option C is incorrect because multi-mode fiber typically uses LEDs or VCSELs, not lasers (lasers are used in single-mode). Option E is incorrect because fiber is generally more expensive per meter than copper, not less.
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.
- ✗
Copper UTP cables can reliably transmit data up to 500 meters without a repeater.
Why it's wrong here
UTP cables are limited to 100 meters for Ethernet due to signal attenuation.
- ✓
Fiber optic cables are immune to electromagnetic interference (EMI).
Why this is correct
Fiber uses light, not electricity, so it is not affected by EMI, making it suitable for noisy environments.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Multi-mode fiber typically uses laser-based transmitters for short-range communication.
Why it's wrong here
Multi-mode fiber commonly uses LEDs or VCSELs, not high-power lasers, which are used in single-mode.
- ✓
Single-mode fiber is designed for long-distance transmission with a narrow core.
Why this is correct
Single-mode fiber has a small core (about 9 microns) that allows only one mode of light, reducing dispersion and enabling distances over 40 km.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Fiber optic cabling is generally less expensive per meter than copper cabling.
Why it's wrong here
Fiber cabling and its associated transceivers are typically more expensive than copper.
Option-by-option analysis
Why each answer is right or wrong
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The 200-301 exam frequently reuses these exact scenarios with slightly different constraints.
✓Fiber optic cables are immune to electromagnetic interference (EMI).Correct answer▾
Why this is correct
Fiber uses light, not electricity, so it is not affected by EMI, making it suitable for noisy environments.
✗Copper UTP cables can reliably transmit data up to 500 meters without a repeater.Wrong answer — click to see why▾
Why this is wrong here
The maximum distance for UTP is about 100 meters, not 500 meters. This distractor tests knowledge of distance limits.
✗Multi-mode fiber typically uses laser-based transmitters for short-range communication.Wrong answer — click to see why▾
Why this is wrong here
Lasers are used with single-mode fiber for longer distances; multi-mode uses less expensive light sources like LEDs.
✗Fiber optic cabling is generally less expensive per meter than copper cabling.Wrong answer — click to see why▾
Why this is wrong here
Fiber is more costly than copper due to materials and manufacturing; copper is cheaper per meter.
Analysis generated from the official 200-301blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- 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 practitioner preparing for the 200-301 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which 200-301 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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FAQ
Questions learners often ask
What does this 200-301 question test?
Read the scenario before looking for a memorised answer.
What is the correct answer to this question?
The correct answer is: Fiber optic cables are immune to electromagnetic interference (EMI). — This question tests your understanding of fundamental differences between copper and fiber cabling. Option B is correct because fiber optic cables use light pulses and are immune to electromagnetic interference (EMI), making them ideal for high-interference environments. Option D is correct because single-mode fiber is designed for long-distance transmission (up to 40 km or more) with a narrow core that reduces signal dispersion. Option A is incorrect because UTP cables are limited to approximately 100 meters (328 feet) for Ethernet. Option C is incorrect because multi-mode fiber typically uses LEDs or VCSELs, not lasers (lasers are used in single-mode). Option E is incorrect because fiber is generally more expensive per meter than copper, not less.
What should I do if I get this 200-301 question wrong?
Identify which 200-301 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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