This VCP-DCV practice question tests your understanding of vsphere security. 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.
A security audit reveals that an ESXi host has been compromised due to an attacker gaining root access via the DCUI. The host is configured with a default DCUI password. Which security best practice should have been implemented to prevent this?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Configure the DCUI lockdown mode to 'Normal'
Normal lockdown mode restricts DCUI access to local console only.
Disable the DCUI service
Why wrong: Disabling DCUI prevents local console access, which may be needed.
Set a strong password for the root account
Why wrong: While important, it does not prevent all attack vectors.
Disable SSH access
Why wrong: SSH is not directly related to DCUI.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Configure the DCUI lockdown mode to 'Normal'
DCUI Lockdown Mode 'Normal' disables direct root access via the Direct Console User Interface (DCUI) by requiring authentication through vCenter Single Sign-On (SSO). This prevents an attacker from using the default or weak DCUI password to gain root access, as the root account is no longer accepted for DCUI login. The mode still allows authorized vCenter administrators to access the host via the DCUI using their SSO credentials, maintaining manageability while eliminating the root password attack vector.
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.
Configure the DCUI lockdown mode to 'Normal'
Why this is correct
Normal lockdown mode restricts DCUI access to local console only.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Disable the DCUI service
Why it's wrong here
Disabling DCUI prevents local console access, which may be needed.
Set a strong password for the root account
Why it's wrong here
While important, it does not prevent all attack vectors.
Disable SSH access
Why it's wrong here
SSH is not directly related to DCUI.
Common exam traps
The trap here is that candidates often choose 'Set a strong password for the root account' because they focus on password strength, but the question specifically highlights a default password being used, and the correct solution is to eliminate the root password as an authentication method for the DCUI entirely.
Detailed technical explanation
DCUI Lockdown Mode 'Normal' works by modifying the ESXi host's authentication flow: when enabled, the DCUI no longer accepts the local root password and instead requires a vCenter Server SSO user with administrative privileges (e.g., from the 'Administrators' group). This mode also disables direct SSH access for the root account, but the key behavior is that the DCUI login prompt changes to accept only SSO credentials. In a real-world scenario, if an organization uses default passwords across multiple hosts, enabling 'Normal' lockdown mode ensures that even if the root password is compromised, the attacker cannot log in via the DCUI without valid vCenter credentials.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
What to study next
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
vSphere Security — This question tests vSphere Security — Read the scenario before looking for a memorised answer..
The correct answer is: Configure the DCUI lockdown mode to 'Normal' — DCUI Lockdown Mode 'Normal' disables direct root access via the Direct Console User Interface (DCUI) by requiring authentication through vCenter Single Sign-On (SSO). This prevents an attacker from using the default or weak DCUI password to gain root access, as the root account is no longer accepted for DCUI login. The mode still allows authorized vCenter administrators to access the host via the DCUI using their SSO credentials, maintaining manageability while eliminating the root password attack vector.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 11, 2026
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