N10-009 Network Operations Practice Question
A network administrator wants to ensure that SNMP traffic between the network monitoring server and managed devices is encrypted and provides authentication of the data origin. Which version of SNMP should be implemented?
⚠ Common exam trap
Candidates often confuse SNMPv2c's improved efficiency and bulk retrieval (e.g., GetBulk) with security enhancements, but SNMPv2c still lacks encryption and authentication, making SNMPv3 the only viable option for secure SNMP traffic.
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
✓
C: SNMPv3
SNMPv3 is the correct choice because it provides both encryption (via the AuthPriv security level) and data origin authentication (via the AuthNoPriv or AuthPriv levels). Unlike earlier versions, SNMPv3 includes a security model that ensures confidentiality, integrity, and authentication, meeting the administrator's requirements.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
A: SNMPv1
Why it's wrong here
SNMPv1 represents the earliest iteration of the protocol and offers virtually no security beyond basic community string authentication. It transmits all management information, including the community string, in unencrypted plaintext, making it highly susceptible to packet sniffing and unauthorized data exposure. This complete absence of encryption, authentication of data origin, or integrity checks makes SNMPv1 entirely inappropriate for any network requiring secure operations.
When this WOULD be correct
A question asking for the simplest SNMP version that is widely supported for basic monitoring in a trusted, isolated network where security is not a concern, and only read-only access is needed.
- ✗
B: SNMPv2c
Why it's wrong here
SNMPv2c, while an improvement over SNMPv1 in terms of operations and data types, still relies on plaintext community strings for authentication. These community strings function as simple passwords transmitted unencrypted over the network, making them highly vulnerable to eavesdropping and unauthorized access. This fundamental lack of confidentiality and integrity protection renders SNMPv2c unsuitable for securing sensitive network management communications.
When this WOULD be correct
A question asking for the simplest SNMP version that supports bulk retrieval of MIB data (e.g., GETBULK) and uses community-based authentication, without requiring encryption or strong authentication.
- ✓
C: SNMPv3
Why this is correct
SNMPv3 is the only version that incorporates robust security features, including strong authentication and encryption, which are crucial for protecting sensitive network management traffic. It utilizes the User-based Security Model (USM) for message authentication and privacy (encryption), ensuring data integrity and confidentiality. This prevents unauthorized access to network device information and protects against tampering, making it the standard for secure network management.
- ✗
D: SNMPv2
Why it's wrong here
The term 'SNMPv2' is often used loosely, but there is no single, universally adopted standard protocol specifically named SNMPv2 that provides comprehensive security. While efforts were made to define a secure SNMPv2, the most commonly implemented version that emerged was SNMPv2c, which itself lacks robust security features like encryption. Therefore, selecting 'SNMPv2' as a secure option is misleading, as any practical implementation would likely be SNMPv2c, which transmits data insecurely.
When this WOULD be correct
A question that asks for a version that supports bulk retrieval of MIB data (GetBulk) or improved error handling, without requiring security features, would make SNMPv2 the correct answer.
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.
✓C: SNMPv3Correct answer▾
Why this is correct
SNMPv3 is the only version that incorporates robust security features, including strong authentication and encryption, which are crucial for protecting sensitive network management traffic. It utilizes the User-based Security Model (USM) for message authentication and privacy (encryption), ensuring data integrity and confidentiality. This prevents unauthorized access to network device information and protects against tampering, making it the standard for secure network management.
✗A: SNMPv1Wrong answer — click to see why▾
Why this is wrong here
SNMPv1 does not support encryption or authentication; it uses community strings in plaintext, so it cannot provide the required security for data origin authentication and encryption.
★ When this WOULD be the correct answer
A question asking for the simplest SNMP version that is widely supported for basic monitoring in a trusted, isolated network where security is not a concern, and only read-only access is needed.
Why candidates choose this
Candidates may confuse SNMPv1 with being 'secure enough' for basic monitoring, or they may not realize that SNMPv1 lacks any security features beyond a plaintext community string.
✗B: SNMPv2cWrong answer — click to see why▾
Why this is wrong here
SNMPv2c uses community strings for authentication, which are transmitted in plaintext, and does not provide encryption or data origin authentication, failing the question's requirements.
★ When this WOULD be the correct answer
A question asking for the simplest SNMP version that supports bulk retrieval of MIB data (e.g., GETBULK) and uses community-based authentication, without requiring encryption or strong authentication.
Why candidates choose this
Candidates may confuse SNMPv2c's community strings as providing some form of authentication, or they may recall that SNMPv2c is widely used and mistakenly think it supports encryption.
✗D: SNMPv2Wrong answer — click to see why▾
Why this is wrong here
SNMPv2 (and SNMPv2c) lacks encryption and authentication; it only uses community strings in plaintext, which does not meet the requirement for encrypted and authenticated data origin.
★ When this WOULD be the correct answer
A question that asks for a version that supports bulk retrieval of MIB data (GetBulk) or improved error handling, without requiring security features, would make SNMPv2 the correct answer.
Why candidates choose this
Candidates may confuse SNMPv2 with SNMPv3, thinking that 'v2' implies improved security, or they may recall that SNMPv2 introduced some enhancements but overlook that security was not addressed until v3.
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?”
Go deeper
Related to this question
Learn chapter
Network Documentation and Diagrams
Key term
Security
Security in IT is the practice of protecting systems, networks, and data from unauthorized access, damage, or theft.
Key term
Integrity
Integrity is the assurance that data has not been altered or tampered with in an unauthorized way, preserving its accuracy and consistency from source to destination.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.