- A
FTP
Why wrong: FTP requires authentication and connection setup, making it less efficient for bulk automated firmware updates to network devices.
- B
TFTP
TFTP is lightweight and widely supported by network devices for transferring firmware images.
- C
HTTP
Why wrong: HTTP can be used, but it is not as commonly implemented for firmware updates in network devices as TFTP.
- D
SNMP
Why wrong: SNMP is designed for management and monitoring, not for file transfer.
Question 175 of 520
N10-009 Network Operations Practice Question
This N10-009 practice question tests your understanding of network operations. 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 engineer needs to update the firmware on dozens of access points located across multiple office floors. The APs are managed by a central wireless controller. Which protocol should the controller use to transfer the firmware file to each AP?
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
✓
TFTP
The correct answer is TFTP (Trivial File Transfer Protocol). Wireless LAN controllers (WLCs) use TFTP to push firmware images to lightweight access points (APs) because TFTP is lightweight, connectionless, and requires minimal memory and processing overhead on the AP. This makes it ideal for the simple, one-way file transfer of a firmware binary during the AP boot or upgrade process, where the AP acts as a TFTP client and the controller as the server.
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.
- ✗
FTP
Why it's wrong here
FTP requires authentication and connection setup, making it less efficient for bulk automated firmware updates to network devices.
- ✓
TFTP
Why this is correct
TFTP is lightweight and widely supported by network devices for transferring firmware images.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
HTTP
- ✗
SNMP
Why it's wrong here
SNMP is designed for management and monitoring, not for file transfer.
When this WOULD be correct
In a scenario where a network engineer needs to remotely configure or retrieve operational parameters (e.g., SSID, channel settings) from multiple APs, SNMP would be the correct protocol for management and monitoring tasks.
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 N10-009 exam frequently reuses these exact scenarios with slightly different constraints.
✓TFTPCorrect answer▾
Why this is correct
TFTP is lightweight and widely supported by network devices for transferring firmware images.
✗HTTPWrong answer — click to see why▾
Why this is wrong here
HTTP is not typically used for firmware transfers in wireless controller environments because it lacks the lightweight, connectionless efficiency of TFTP, which is designed for simple file transfers over UDP without the overhead of TCP.
★ When this WOULD be the correct answer
HTTP would be correct if the question specified that the APs support a web-based management interface and the firmware update is performed via a web browser or a REST API, such as in a small office with standalone APs that have built-in HTTP servers.
Why candidates choose this
Candidates may assume HTTP is suitable because it is a common protocol for file transfers, overlooking that TFTP is the standard for network device firmware updates due to its simplicity and low resource usage.
✗SNMPWrong answer — click to see why▾
Why this is wrong here
SNMP is used for network management and monitoring, not for file transfer. It lacks the capability to transfer firmware files to access points.
★ When this WOULD be the correct answer
In a scenario where a network engineer needs to remotely configure or retrieve operational parameters (e.g., SSID, channel settings) from multiple APs, SNMP would be the correct protocol for management and monitoring tasks.
Why candidates choose this
Candidates may confuse SNMP's role in network management with the ability to perform firmware updates, assuming it can handle all management tasks including file transfers.
Analysis generated from the official N10-009blueprint 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
The trap here is that candidates often choose FTP or HTTP because they are more familiar for file transfers, but they overlook that TFTP is the standard protocol used by Cisco wireless controllers for AP firmware upgrades due to its simplicity and low overhead.
Detailed technical explanation
How to think about this question
TFTP uses UDP port 69 and a simple lock-step protocol with fixed 512-byte data blocks, making it efficient for embedded devices with limited resources. In a Cisco WLC environment, the controller automatically serves the firmware image via TFTP when an AP boots in 'lightweight' mode, and the AP requests the image using its own IP address as the source. A real-world scenario: if the TFTP transfer is interrupted, the AP may fail to join the controller and fall back to a recovery mode, requiring manual intervention to retransmit the image.
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 N10-009 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.
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FAQ
Questions learners often ask
What does this N10-009 question test?
Network Operations — This question tests Network Operations — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: TFTP — The correct answer is TFTP (Trivial File Transfer Protocol). Wireless LAN controllers (WLCs) use TFTP to push firmware images to lightweight access points (APs) because TFTP is lightweight, connectionless, and requires minimal memory and processing overhead on the AP. This makes it ideal for the simple, one-way file transfer of a firmware binary during the AP boot or upgrade process, where the AP acts as a TFTP client and the controller as the server.
What should I do if I get this N10-009 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.
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 →
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Last reviewed: Jun 11, 2026
This N10-009 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 N10-009 exam.
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