The answer is that the vMotion VMkernel interface is on vmk2, but no route exists for the vMotion destination network. This is correct because when a vMotion operation triggers a routing error, the ESXi host’s routing table must contain a specific route for the destination subnet; if the vMotion traffic is assigned to vmk2 but no route points to that network, the kernel cannot forward the packets, resulting in a “no route” failure. On the VMware Certified Professional Data Center Virtualization VCP-DCV exam, this scenario tests your understanding of VMkernel adapter configuration and TCP/IP stack routing, often appearing as a diagram-based question where you must identify which interface lacks a proper gateway or static route. A common trap is assuming all VMkernel interfaces automatically have routes, but vMotion requires an explicit route if the destination is on a different subnet. Memory tip: “vmk2 needs a route to vMotion—no route, no remote move.”
VCP-DCV Configure and Manage vSphere Networking Practice Question
This VCP-DCV practice question tests your understanding of configure and manage vsphere networking. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.
Exhibit
esxcli network ip interface ipv4 get
Name IPv4 Address IPv4 Netmask IPv4 Broadcast Address Type DHCP DNS
vmk0 192.168.10.10 255.255.255.0 192.168.10.255 STATIC false
vmk1 10.0.0.10 255.255.255.0 10.0.0.255 STATIC false
vmk2 172.16.0.10 255.255.255.0 172.16.0.255 STATIC false
esxcli network ip route ipv4 list
Network Netmask Gateway Interface
192.168.10.0 255.255.255.0 0.0.0.0 vmk0
default 0.0.0.0 192.168.10.1 vmk0
10.0.0.0 255.255.255.0 0.0.0.0 vmk1
172.16.0.0 255.255.255.0 0.0.0.0 vmk2
Refer to the exhibit. The ESXi host has three VMkernel interfaces. A vMotion operation fails with a routing error. Which is the most likely cause?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The vMotion VMkernel interface is on vmk2, but no route exists for the vMotion destination network.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
The vMotion VMkernel interface uses DHCP.
Why it's wrong here
All interfaces are static.
✗
The vMotion VMkernel interface is on vmk1, but the default gateway points to vmk0.
Why it's wrong here
vMotion can use a non-default gateway if the destination is on the same subnet.
✗
The vMotion VMkernel interface is on vmk0, but the gateway is incorrect.
The vMotion VMkernel interface is on vmk2, but no route exists for the vMotion destination network.
Why this is correct
If the destination is not on the same subnet as vmk2, a route is needed but missing.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Static NAT maps one inside address to one outside address.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
How this comes up in practice
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
Got this wrong? Here's your next step.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related VCP-DCV NAT questions on configuration and troubleshooting.
Configure and Manage vSphere Networking — This question tests Configure and Manage vSphere Networking — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: The vMotion VMkernel interface is on vmk2, but no route exists for the vMotion destination network.
What should I do if I get this VCP-DCV question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related VCP-DCV NAT questions on configuration and troubleshooting.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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