CV0-002 · Question #248
A cloud implementation engineer successfully created a new VM. However, the engineer notices the new VM is not accessible from another network. A ping test works from another VM on the same subnet. Wh
The correct answer is D. Incorrect gateway. If a VM can communicate within its own subnet but not with other networks, the most likely issue is an incorrect or missing default gateway configuration.
Question
A cloud implementation engineer successfully created a new VM. However, the engineer notices the new VM is not accessible from another network. A ping test works from another VM on the same subnet. Which of the following is the MOST likely problem?
Options
- AIncorrect subnet
- BIncorrect host IP address
- CIncorrect VLAN
- DIncorrect gateway
How the community answered
(18 responses)- A6% (1)
- B11% (2)
- D83% (15)
Why each option
If a VM can communicate within its own subnet but not with other networks, the most likely issue is an incorrect or missing default gateway configuration.
An incorrect subnet would typically prevent communication even within the same logical subnet, which contradicts the successful ping test to another VM on the same subnet.
An incorrect host IP address might cause general connectivity issues, but if local subnet communication works, the IP is at least correctly associated with the local subnet.
An incorrect VLAN configuration would typically prevent the VM from communicating with any other VMs, even on the "same subnet" if the VLAN tagging is wrong, which contradicts the successful ping test within the subnet.
The default gateway is responsible for routing traffic from the local subnet to other networks. If a VM can communicate locally but not externally, it implies the gateway is misconfigured or missing, preventing it from knowing where to send traffic for other networks.
Concept tested: Network connectivity troubleshooting
Source: https://learn.microsoft.com/en-us/troubleshoot/azure/virtual-network/troubleshoot-vm-connectivity
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