CV0-004 Troubleshooting Practice Question
Exhibit
Refer to the exhibit. ``` $ ping 10.10.10.10 PING 10.10.10.10 (10.10.10.10) 56(84) bytes of data. From 10.10.10.1 icmp_seq=1 Destination Host Unreachable From 10.10.10.1 icmp_seq=2 Destination Host Unreachable From 10.10.10.1 icmp_seq=3 Destination Host Unreachable --- 10.10.10.10 ping statistics --- 3 packets transmitted, 0 received, +3 errors, 100% packet loss, time 2003ms $ traceroute 10.10.10.10 traceroute to 10.10.10.10 (10.10.10.10), 30 hops max, 60 byte packets 1 10.10.10.1 0.433 ms 0.428 ms 0.414 ms 2 * * * 3 * * * 4 * * * ```
A cloud administrator is troubleshooting connectivity to a virtual machine with IP address 10.10.10.10 from another VM on the same subnet. The output of ping and traceroute commands is shown. What is the most likely cause of the connectivity issue?
⚠ Common exam trap
A common mix-up: candidates assume a powered-off VM is the cause, but the question specifies the VM is on the same subnet and the output shows no response at all, which points to a Layer 2 issue (disabled NIC) rather than a Layer 3 or higher issue like security groups or routing.
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
✓
The destination VM's network interface is disabled.
A disabled network interface on the destination VM would cause the VM to be unreachable from the same subnet, even though the VM itself is powered on. Ping and traceroute would fail with no response, as the NIC is not operational at Layer 2, preventing ARP resolution and frame delivery. This matches the symptom of no connectivity despite being on the same subnet, where routing and security groups are not factors.
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 destination VM's network interface is disabled.
Why this is correct
If the network interface is disabled, the VM will not respond to ARP requests, causing the gateway to return 'Destination Host Unreachable'.
- ✗
The destination VM is powered off.
Why it's wrong here
While a powered-off VM could cause unreachability, the 'Destination Host Unreachable' message from the gateway suggests the gateway itself cannot resolve the destination MAC, which is more indicative of an ARP failure than a powered-off VM.
- ✗
The source VM's routing table does not have a default gateway.
Why it's wrong here
Since both VMs are on the same subnet, no routing is needed; the issue is at layer 2, not layer 3 routing.
- ✗
The destination VM's security group is blocking ICMP.
Why it's wrong here
A security group blocking ICMP would typically result in a timeout (no response) rather than a 'Destination Host Unreachable' message from the gateway.
Visual reference
Go deeper
Related to this question
About these practice questions
One of 977 original CV0-004 practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CV0-004 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CV0-004 exam.