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SNMP Troubleshooting →mediumMultiple ChoiceObjective-mapped

Default SNMPv3 Security Level: authNoPriv

This 300-410 practice question tests your understanding of snmp troubleshooting. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.

What is the default SNMPv3 security level for a user configured with the "snmp-server user username groupname v3 auth sha password" command?

Quick Answer

The answer is authNoPriv. This is the default SNMPv3 security level when a user is configured with the `snmp-server user username groupname v3 auth sha password` command because the command explicitly specifies an authentication protocol (SHA) but omits any privacy (encryption) parameter, such as `priv aes 128`. In SNMPv3, the security level is determined by the combination of authentication and privacy settings: noAuthNoPrif, authNoPriv, or authPriv. Since only authentication is enabled, the system defaults to authNoPriv, meaning the device verifies the user’s identity via the SHA hash but does not encrypt the SNMP payload. On the Cisco CCNP ENARSI 300-410 exam, this concept tests your understanding of SNMPv3 configuration syntax and the relationship between the `auth` and `priv` keywords. A common trap is assuming that specifying `auth` automatically implies privacy, or that the default level is authPriv. To avoid this, remember the mnemonic: “Auth alone, no privacy zone” — if you see `auth` without `priv`, the security level is always authNoPriv.

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

✓

authNoPriv

Option B is correct because when you configure an SNMPv3 user with the `snmp-server user username groupname v3 auth sha password` command without explicitly specifying a privacy (encryption) password or the `priv` keyword, the default security level is `authNoPriv`. This means authentication is enabled using SHA, but no encryption is applied to the SNMP packets. The security level is implicitly set to `authNoPriv` because the command includes an authentication password but omits the privacy password.

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.

  • ✗

    noAuthNoPriv

    Why it's wrong here

    This level requires no authentication and no privacy; the command includes auth, so this is incorrect.

  • ✓

    authNoPriv

    Why this is correct

    When only auth is configured without priv, the default security level is authNoPriv per RFC 3414.

    Related concept

    Read the scenario before looking for a memorised answer.

  • ✗

    authPriv

    Why it's wrong here

    authPriv requires both authentication and privacy; privacy is not configured here.

  • ✗

    The command is invalid without specifying a security level.

    Why it's wrong here

    The command is valid; the security level defaults to authNoPriv when only auth is specified.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates assume the command is invalid or that the security level must be explicitly stated, but Cisco's CLI defaults to `authNoPriv` when only authentication is configured, and the command is perfectly valid without the `priv` keyword.

Trap categories for this question

  • Command / output trap

    This level requires no authentication and no privacy; the command includes auth, so this is incorrect.

Detailed technical explanation

How to think about this question

Under the hood, SNMPv3 security levels are defined in RFC 3414 and are determined by the combination of authentication and privacy settings. The `snmp-server user` command stores the user in the SNMP engine's User Security Model (USM) table; if only an auth password is provided, the `authNoPriv` flag is set. A common real-world scenario is when an engineer configures SNMPv3 monitoring but forgets to add the privacy password, resulting in unencrypted traffic that can be intercepted, which is critical in compliance-sensitive environments like PCI-DSS.

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 300-410 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 300-410 question test?

SNMP Troubleshooting — This question tests SNMP Troubleshooting — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: authNoPriv — Option B is correct because when you configure an SNMPv3 user with the `snmp-server user username groupname v3 auth sha password` command without explicitly specifying a privacy (encryption) password or the `priv` keyword, the default security level is `authNoPriv`. This means authentication is enabled using SHA, but no encryption is applied to the SNMP packets. The security level is implicitly set to `authNoPriv` because the command includes an authentication password but omits the privacy password.

What should I do if I get this 300-410 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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Last reviewed: Jul 4, 2026

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