CV0-002 · Question #41
An administrator has created a new virtual server according to specifications and verified that TCP/IP settings are correct. When the VM is powered on, however, an error message indicates that a…
The correct answer is A. Remove the virtual NIC and configure another one. To resolve a MAC address conflict on a virtual server, removing the existing virtual network adapter and then adding a new one is an effective solution, as the hypervisor will typically assign a new, unique MAC address.
Question
An administrator has created a new virtual server according to specifications and verified that TCP/IP settings are correct. When the VM is powered on, however, an error message indicates that a network card MAC address conflict exists. Which of the following would resolve this issue?
Options
- ARemove the virtual NIC and configure another one.
- BAdd an additional NIC with a loopback interface.
- CPing the IP address to determine the location of the conflict.
- DChange the MAC to ff:ff:ff:ff:ff:ff and obtain a new address.
How the community answered
(36 responses)- A83% (30)
- B3% (1)
- C6% (2)
- D8% (3)
Why each option
To resolve a MAC address conflict on a virtual server, removing the existing virtual network adapter and then adding a new one is an effective solution, as the hypervisor will typically assign a new, unique MAC address.
Removing the problematic virtual NIC and then adding a new one will cause the hypervisor to generate and assign a new, unique MAC address to the virtual machine, thereby resolving the conflict.
Adding a loopback interface does not resolve an existing MAC address conflict on an active network interface, as a loopback is a software-only interface used for self-testing.
Pinging an IP address determines network reachability but does not resolve a Layer 2 MAC address conflict, which typically prevents proper network initialization.
The MAC address ff:ff:ff:ff:ff:ff is the broadcast address and cannot be assigned to a specific network interface, so attempting this would not resolve the conflict and would cause further issues.
Concept tested: Virtual machine MAC address conflict resolution
Source: https://learn.microsoft.com/en-us/virtualization/hyper-v-server/manage/configure-mac-address-spoofing-in-hyper-v
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