VCP-DCV Configure and Manage vSphere Storage Practice Question
Network Topology
Refer to the exhibit. An administrator has configured a vSphere host to use Round Robin (RR) PSP for a specific ALUA storage device. However, after a storage array failover, the host is not detecting the new active paths correctly. Which configuration change should be made to ensure proper path failover behavior?
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
✓
Enable explicit_transition by setting it to 1 in the SATP device config.
The exhibit shows the device is using TPGS (Target Port Group Support) with ALUA. The output shows that implicit_transition is set to 0, meaning the host does not automatically react to ALUA state changes. To ensure proper failover, explicit_transition should be enabled (set to 1), which allows the host to query the array for path state changes. Additionally, setting useANO=1 in PSP config can help by enabling Asymmetric Namespace Access, but the key issue is the implicit_transition setting.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Enable explicit_transition by setting it to 1 in the SATP device config.
Why this is correct
Explicit transition allows the host to query the array for path state changes, ensuring proper failover detection.
- ✗
Change the SATP to VMW_SATP_DEFAULT_AA.
Why it's wrong here
VMW_SATP_DEFAULT_AA is for active/active arrays without ALUA, not appropriate for this ALUA device.
- ✗
Set the PSP to VMW_PSP_FIXED and designate a preferred path.
Why it's wrong here
Fixed PSP is not recommended for ALUA arrays; RR is appropriate, but the issue is SATP configuration.
- ✗
Increase the IOPS limit for the RR PSP to 10000.
Why it's wrong here
IOPS limit does not affect path failover detection.
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 |
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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