CV0-003 · Question #130
An administrator has configured a new VM with the correct IP, netmask, and default gateway. However, even with the vNIC showing a link and incoming and outgoing packets, the VM is unable to ping its…
The correct answer is D. The VM has an incorrect WWN. An incorrect WWN prevents the host from being authenticated in the storage fabric, which can disrupt VM network communication even when the vNIC shows an active link with packet activity.
Question
An administrator has configured a new VM with the correct IP, netmask, and default gateway. However, even with the vNIC showing a link and incoming and outgoing packets, the VM is unable to ping its default gateway. Which of the following is MOST likely the reason the VM network connection is not functioning properly?
Options
- AThe VM is not connected to the correct virtual switch.
- BThe VM does not have jumbo frames enabled.
- CThe VM is not in the LUN masking configuration.
- DThe VM has an incorrect WWN.
How the community answered
(31 responses)- A6% (2)
- B26% (8)
- C13% (4)
- D55% (17)
Why each option
An incorrect WWN prevents the host from being authenticated in the storage fabric, which can disrupt VM network communication even when the vNIC shows an active link with packet activity.
An incorrect virtual switch assignment would typically result in no link state or no packets at all, not an active link with packet flow that still fails to reach the gateway.
Jumbo frames affect MTU negotiation for large packet transfers but do not prevent basic ICMP ping communication with a default gateway under standard MTU settings.
LUN masking is a storage access control mechanism restricting which hosts can access which storage volumes and is unrelated to IP network connectivity or ping reachability.
In a virtualized SAN-backed environment, an incorrect WWN causes the HBA to fail fabric authentication and zoning validation, meaning the VM is not recognized as an authorized participant in the fabric, blocking traffic from reaching the default gateway despite the vNIC reporting an active link and visible packet counters.
Concept tested: WWN configuration and fabric authentication in virtual environments
Topics
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