- A
Converts ISP signal to digital
Why wrong: That's a modem's function.
- B
Assigns IP addresses to devices
Why wrong: That's typically done by a DHCP server, often built into the router.
- C
Provides wireless connectivity only
Why wrong: Some routers have wireless, but primary is routing.
- D
Connects the home network to the internet
Routers direct traffic between networks.
Question 11 of 1,000
FC0-U61 Infrastructure Practice Question
This FC0-U61 practice question tests your understanding of infrastructure. 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 of the following is the primary function of a router in a home network?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"primary"Why it matters: Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
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
✓
Connects the home network to the internet
A router connects the home network to the internet and performs NAT to share the public IP.
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.
- ✗
Converts ISP signal to digital
Why it's wrong here
That's a modem's function.
- ✗
Assigns IP addresses to devices
Why it's wrong here
That's typically done by a DHCP server, often built into the router.
- ✗
Provides wireless connectivity only
Why it's wrong here
Some routers have wireless, but primary is routing.
- ✓
Connects the home network to the internet
Why this is correct
Routers direct traffic between networks.
Clue confirmation
The clue word "primary" in the question point toward this answer.
Related concept
Static NAT maps one inside address to one outside address.
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.
Visual reference
What to study next
Got this wrong? Here's your next step.
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 FC0-U61 NAT questions on configuration and troubleshooting.
- →
Infrastructure — study guide chapter
Learn the concepts, then practise the questions
- →
Infrastructure practice questions
Targeted practice on this topic area only
- →
All FC0-U61 questions
1,000 questions across all exam domains
- →
CompTIA ITF+ FC0-U61 study guide
Full concept coverage aligned to exam objectives
- →
FC0-U61 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related FC0-U61 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
IT Concepts and Terminology practice questions
Practise FC0-U61 questions linked to IT Concepts and Terminology.
Infrastructure practice questions
Practise FC0-U61 questions linked to Infrastructure.
Applications and Software practice questions
Practise FC0-U61 questions linked to Applications and Software.
Software Development practice questions
Practise FC0-U61 questions linked to Software Development.
Database Fundamentals practice questions
Practise FC0-U61 questions linked to Database Fundamentals.
Security practice questions
Practise FC0-U61 questions linked to Security.
Software Development Concepts practice questions
Practise FC0-U61 questions linked to Software Development Concepts.
FC0-U61 fundamentals practice questions
Practise FC0-U61 questions linked to FC0-U61 fundamentals.
FC0-U61 scenario practice questions
Practise FC0-U61 questions linked to FC0-U61 scenario.
FC0-U61 troubleshooting practice questions
Practise FC0-U61 questions linked to FC0-U61 troubleshooting.
Practice this exam
Start a free FC0-U61 practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Questions learners often ask
What does this FC0-U61 question test?
Infrastructure — This question tests Infrastructure — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Connects the home network to the internet — A router connects the home network to the internet and performs NAT to share the public IP.
What should I do if I get this FC0-U61 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 FC0-U61 NAT questions on configuration and troubleshooting.
Are there clue words in this question I should notice?
Yes — watch for: "primary". Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Last reviewed: Jul 4, 2026
This FC0-U61 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 FC0-U61 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.