N10-009 Network Operations Practice Question
A network administrator must monitor network devices using SNMP. The security policy mandates strong encryption for both authentication and data integrity. Which SNMP version and security level should be implemented?
⚠ Common exam trap
The N10-009 exam often tests the misconception that SNMPv3 always provides encryption, but candidates must remember that noAuthNoPriv and authNoPriv are valid security levels that do not meet a 'strong encryption' mandate.
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
✓
SNMPv3 with authPriv
SNMPv3 with authPriv is correct because it provides both authentication (to verify the source of messages) and encryption (to ensure data integrity and confidentiality). The security policy mandates strong encryption for both authentication and data integrity, which only the authPriv security level fulfills by using HMAC-SHA/MD5 for authentication and AES/DES for encryption.
Answer analysis
Option-by-option breakdown
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 is an insecure option for monitoring network devices as it transmits all data, including community strings, in plaintext over the network. It completely lacks any authentication mechanisms beyond a simple community string, which is essentially a password sent unencrypted. Furthermore, SNMPv1 provides no data integrity checks or encryption capabilities, making it highly susceptible to eavesdropping and unauthorized manipulation of network management information.
When this WOULD be correct
A question that asks for the simplest SNMP version for basic monitoring on a trusted, isolated network with no security requirements would make SNMPv1 correct.
- ✗
SNMPv2c
Why it's wrong here
SNMPv2c, while offering improvements in performance and operations like GETBULK requests over SNMPv1, fundamentally shares the same critical security flaw: it relies on plaintext community strings for authentication. This means that all management information, including the community string itself, is transmitted unencrypted across the network. Without any encryption or robust authentication mechanisms, SNMPv2c is highly vulnerable to interception and unauthorized access, rendering it inappropriate for secure environments.
When this WOULD be correct
In a scenario where the security policy only requires basic authentication and no encryption, and the network devices do not support SNMPv3, SNMPv2c would be the correct choice due to its simplicity and widespread support.
- ✗
SNMPv3 with noAuthNoPriv
Why it's wrong here
While part of the SNMPv3 standard, the noAuthNoPriv security level offers no authentication or encryption, making it unsuitable for secure network monitoring. This level only provides message integrity through a basic checksum, but it does not verify the sender's identity or protect the data's confidentiality. Consequently, using noAuthNoPriv leaves network management traffic vulnerable to unauthorized access and tampering, failing to meet any security requirements.
When this WOULD be correct
In a scenario where the security policy only requires monitoring without any authentication or privacy, and the network is isolated and trusted, SNMPv3 with noAuthNoPriv would be acceptable to reduce overhead.
- ✓
SNMPv3 with authPriv
Why this is correct
SNMPv3 with authPriv is the correct choice because it provides the highest level of security among the SNMP versions, fulfilling requirements for secure monitoring. This security level ensures both data integrity and confidentiality through strong authentication using HMAC-MD5 or HMAC-SHA algorithms, and robust encryption via DES, 3DES, or AES. This comprehensive protection prevents unauthorized access to sensitive network monitoring data and secures it against eavesdropping or tampering during transit.
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.
✓SNMPv3 with authPrivCorrect answer▾
Why this is correct
SNMPv3 with authPriv is the correct choice because it provides the highest level of security among the SNMP versions, fulfilling requirements for secure monitoring. This security level ensures both data integrity and confidentiality through strong authentication using HMAC-MD5 or HMAC-SHA algorithms, and robust encryption via DES, 3DES, or AES. This comprehensive protection prevents unauthorized access to sensitive network monitoring data and secures it against eavesdropping or tampering during transit.
✗SNMPv1Wrong answer — click to see why▾
Why this is wrong here
SNMPv1 does not support encryption or authentication, transmitting data in plaintext, which fails to meet the mandate for strong encryption and data integrity.
★ When this WOULD be the correct answer
A question that asks for the simplest SNMP version for basic monitoring on a trusted, isolated network with no security requirements would make SNMPv1 correct.
Why candidates choose this
Candidates may mistakenly think SNMPv1 is sufficient for basic monitoring without reading the security requirements, or they may be unfamiliar with SNMPv3's security features.
✗SNMPv2cWrong answer — click to see why▾
Why this is wrong here
SNMPv2c uses community strings for authentication and does not support encryption, failing to meet the mandate for strong encryption of both authentication and data integrity.
★ When this WOULD be the correct answer
In a scenario where the security policy only requires basic authentication and no encryption, and the network devices do not support SNMPv3, SNMPv2c would be the correct choice due to its simplicity and widespread support.
Why candidates choose this
Candidates may be familiar with SNMPv2c from legacy environments and mistakenly believe it offers sufficient security, or they may overlook the specific encryption requirement in the question.
✗SNMPv3 with noAuthNoPrivWrong answer — click to see why▾
Why this is wrong here
SNMPv3 with noAuthNoPriv provides no authentication or encryption, violating the mandate for strong encryption of both authentication and data integrity.
★ When this WOULD be the correct answer
In a scenario where the security policy only requires monitoring without any authentication or privacy, and the network is isolated and trusted, SNMPv3 with noAuthNoPriv would be acceptable to reduce overhead.
Why candidates choose this
Candidates may think SNMPv3 inherently provides security regardless of the security level, overlooking that noAuthNoPriv offers no actual protection.
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?”
Quick reference
Symmetric Encryption Algorithm Comparison
| Algorithm | Key Size | Block Size | Status | Notes |
|---|---|---|---|---|
| AES-128 | 128-bit | 128-bit | Current standard | NIST approved; WPA3, TLS |
| AES-256 | 256-bit | 128-bit | Current standard | Preferred for sensitive / govt data |
| 3DES | 112-bit effective | 64-bit | Deprecated (2023) | Replaced by AES |
| DES | 56-bit | 64-bit | Broken | Cracked in < 24 h; never deploy |
| ChaCha20 | 256-bit | Stream cipher | Current | TLS 1.3, WireGuard |
Go deeper
Related to this question
Learn chapter
Network Documentation and Diagrams
Key term
HMAC
HMAC (Hash-based Message Authentication Code) is a mechanism that uses a cryptographic hash function together with a secret key to verify both the integrity and authenticity of a message.
Key term
Encryption
Encryption is the process of converting readable data into a secret code to prevent unauthorized access.
About these practice questions
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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.