Quick Answer
SNMPv3 is the correct choice because it is the only version of the protocol that provides both authentication and encryption for secure monitoring. While SNMPv1 and v2c rely on plaintext community strings that can be easily intercepted, SNMPv3 introduces a User-Based Security Model (USM) that ensures message integrity, verifies the sender’s identity, and encrypts the data payload using algorithms like SHA or MD5 for authentication and AES or DES for privacy. On the CompTIA Network+ N10-009 exam, this question tests your understanding of SNMP security evolution—a common trap is assuming SNMPv2c offers encryption, but it only adds bulk retrieval, not security. Remember the memory tip: “v3 has the key to lock and sign,” meaning it encrypts (locks) and authenticates (signs) every trap and query.
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.
An organization is implementing a network monitoring solution that uses SNMP. The administrator wants to receive traps from all devices but is concerned about the security of SNMPv1/v2c community strings. Which SNMP version should be used to provide authentication and encryption?
SNMPv1
Why wrong: SNMPv1 uses community strings in plaintext and offers no encryption or authentication.
SNMPv2c
Why wrong: SNMPv2c also uses plaintext community strings and lacks strong security.
SNMPv3
SNMPv3 provides authentication, integrity, and encryption to protect SNMP traffic.
SNMPv4
Why wrong: There is no SNMPv4; the current secure version is SNMPv3.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
SNMPv3
SNMPv3 is the correct choice because it is the only version of SNMP that provides both authentication and encryption, addressing the security concerns with SNMPv1/v2c community strings. SNMPv3 supports user-based security models (USM) with features like message integrity, authentication, and encryption (e.g., using SHA/MD5 for auth and AES/DES for privacy). This ensures that traps are sent securely, preventing unauthorized access or tampering.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
SNMPv1
Why it's wrong here
SNMPv1 uses community strings in plaintext and offers no encryption or authentication.
SNMPv2c
Why it's wrong here
SNMPv2c also uses plaintext community strings and lacks strong security.
SNMPv3
Why this is correct
SNMPv3 provides authentication, integrity, and encryption to protect SNMP traffic.
Related concept
Read the scenario before looking for a memorised answer.
SNMPv4
Why it's wrong here
There is no SNMPv4; the current secure version is SNMPv3.
Common exam traps
CompTIA often tests the misconception that SNMPv2c offers improved security over SNMPv1, but in reality, both v1 and v2c are equally insecure because they use plaintext community strings, while SNMPv3 is the only version that provides authentication and encryption.
Detailed technical explanation
SNMPv3's User-Based Security Model (USM) defines three security levels: noAuthNoPriv (no authentication or encryption), authNoPriv (authentication only, using HMAC-MD5 or HMAC-SHA), and authPriv (both authentication and encryption, using CBC-DES or CFB-AES). When configuring SNMPv3 on Cisco devices, you must create users with specific security levels and engine IDs, and traps are sent using the configured credentials. In a real-world scenario, an organization might use SNMPv3 authPriv to comply with security policies like PCI DSS, ensuring that sensitive network data is encrypted over the wire.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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
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FAQ
Network Operations — This question tests Network Operations — Read the scenario before looking for a memorised answer..
The correct answer is: SNMPv3 — SNMPv3 is the correct choice because it is the only version of SNMP that provides both authentication and encryption, addressing the security concerns with SNMPv1/v2c community strings. SNMPv3 supports user-based security models (USM) with features like message integrity, authentication, and encryption (e.g., using SHA/MD5 for auth and AES/DES for privacy). This ensures that traps are sent securely, preventing unauthorized access or tampering.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 30, 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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