The answer is a switch, a router, and a modem. A switch connects multiple computers within the local network, allowing them to communicate and share resources like files or printers by forwarding data only to the intended device. The router directs traffic between the local network and the internet, while the modem converts digital signals from the router into analog signals for transmission over telephone or cable lines, enabling internet connectivity. On the CompTIA ITF+ FC0-U61 exam, this question tests your understanding of basic network devices for small office setups, often appearing as a select-all-that-apply item. A common trap is confusing a hub with a switch—remember that a switch is smarter because it sends data only to the specific device, not to all ports. For a memory tip, think "Switch for sharing, Router for routing, Modem for modulating."
FC0-U61 IT Concepts and Terminology Practice Question
This FC0-U61 practice question tests your understanding of it concepts and terminology. 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 network administrator is setting up a small office network. Which THREE devices are typically used to connect multiple computers and share resources? (Select exactly three.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Modem
A modem (modulator-demodulator) is correct because it converts digital signals from a local network into analog signals for transmission over telephone or cable lines, and vice versa, enabling internet connectivity. In a small office, a modem is typically the first device that connects to the ISP, allowing multiple computers to share a single internet connection. Without a modem, the network would lack the necessary interface to communicate with external wide-area networks (WANs).
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.
✓
Modem
Why this is correct
A modem converts digital signals to analog for transmission over telephone or cable lines.
Related concept
Read the scenario before looking for a memorised answer.
✓
Router
Why this is correct
A router directs traffic between networks and provides internet access.
Related concept
Read the scenario before looking for a memorised answer.
✗
Hub
Why it's wrong here
A hub is a simple repeater, no longer commonly used due to inefficiency and security issues.
✗
Firewall
Why it's wrong here
A firewall provides security but is not primarily for connecting computers or sharing resources.
✓
Switch
Why this is correct
A switch connects multiple devices within the same network, forwarding frames.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse a hub with a switch, assuming both are equally suitable for connecting multiple computers, but the exam expects you to recognize that a hub is obsolete for modern resource sharing due to its lack of traffic management and collision handling.
Detailed technical explanation
How to think about this question
In a typical small office setup, the modem connects to the ISP via DOCSIS (cable) or VDSL/ADSL (DSL), using protocols like PPPoE or DHCP to obtain a public IP address. The router then performs Network Address Translation (NAT) to allow multiple devices to share that single public IP, while the switch forwards frames at Layer 2 using MAC address tables, enabling efficient local communication. A hub, by contrast, uses a shared collision domain, meaning only one device can transmit at a time, leading to degraded performance as the number of connected devices increases.
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 practitioner preparing for the FC0-U61 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 exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
IT Concepts and Terminology — This question tests IT Concepts and Terminology — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Modem — A modem (modulator-demodulator) is correct because it converts digital signals from a local network into analog signals for transmission over telephone or cable lines, and vice versa, enabling internet connectivity. In a small office, a modem is typically the first device that connects to the ISP, allowing multiple computers to share a single internet connection. Without a modem, the network would lack the necessary interface to communicate with external wide-area networks (WANs).
What should I do if I get this FC0-U61 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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