A network engineer is troubleshooting packet loss between two cloud VMs in the same VNet but in different subnets. The engineer runs a packet capture on both VMs and sees that packets are being sent from VM A but are not arriving at VM B. The engineer also checks the network security group (NSG) on VM B and confirms that it allows traffic from VM A's subnet. The VMs are connected to a network virtual appliance (NVA) that is used for traffic inspection. What is the most likely cause of the packet loss?

The NVA is dropping the packets due to a misconfigured firewall rule or a resource issue.

The NSG on VM A is blocking outbound traffic.

The VM B's operating system firewall is blocking the traffic.

The VNet peering between the subnets is not configured correctly.

A network engineer observes high latency on a connection between two virtual machines in the same cloud VNet. After ruling out application issues, which component is the MOST likely source of the delay?

The DNS resolution of the destination VM's hostname

The public IP address assigned to the source VM

The physical network path between the hypervisors

A user reports that a video conference is breaking up and freezing. The network administrator suspects packet loss. Which symptom is MOST consistent with this diagnosis?

Intermittent audio dropouts and distorted video

A slow but steady download speed for a large file

A consistently high ping time to the video server

The user's computer showing a low Wi-Fi signal strength

A company has a web application deployed across two availability zones in a cloud region. Each zone has two virtual machines running the application. The load balancer is currently configured with a health check that probes the root path '/' every 30 seconds. During a recent deployment, one of the virtual machines in Zone A began returning HTTP 503 errors, but the load balancer continued to send traffic to it, causing intermittent failures for users. What should the administrator do to prevent this issue?

Configure the health check to probe a specific application endpoint that verifies the application's readiness.

Increase the health check interval to 60 seconds.

Change the load balancing algorithm to least connections.

Remove the virtual machine from the load balancer pool manually.

CompTIACloudNetX

Domain 4Objective 2

Performance Problems CNX-001 Practice Questions (Page 6)

Part of the Network troubleshooting domain, which accounts for 25% of the CNX-001 exam. CompTIA does not publish an official question count, but from its 165-minute exam (~65–110 total, ~16–28 in this domain), expect 5–9 from this objective — we provide 35 practice questions to prepare you well beyond it. (estimate)

35questions here

7free pages

10concepts

25%of the exam

Questions 26–30

26expert · hard
A network engineer is troubleshooting packet loss between two cloud VMs in the same VNet but in different subnets. The engineer runs a packet capture on both VMs and sees that packets are being sent from VM A but are not arriving at VM B. The engineer also checks the network security group (NSG) on VM B and confirms that it allows traffic from VM A's subnet. The VMs are connected to a network virtual appliance (NVA) that is used for traffic inspection. What is the most likely cause of the packet loss?
Select an answer first
27foundation · easy
A network engineer observes high latency on a connection between two virtual machines in the same cloud VNet. After ruling out application issues, which component is the MOST likely source of the delay?
Select an answer first
28foundation · easy
A user reports that a video conference is breaking up and freezing. The network administrator suspects packet loss. Which symptom is MOST consistent with this diagnosis?
Select an answer first
29application · medium
A company has a web application deployed across two availability zones in a cloud region. Each zone has two virtual machines running the application. The load balancer is currently configured with a health check that probes the root path '/' every 30 seconds. During a recent deployment, one of the virtual machines in Zone A began returning HTTP 503 errors, but the load balancer continued to send traffic to it, causing intermittent failures for users. What should the administrator do to prevent this issue?
Select an answer first
30foundation · easy
Which network condition is characterized by data packets failing to reach their destination?
Select an answer first

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Performance Problems CNX-001 Practice Questions (Page 6)

Questions 26–30

A network engineer observes high latency on a connection between two virtual machines in the same cloud VNet. After ruling out application issues, which component is the MOST likely source of the delay?

A user reports that a video conference is breaking up and freezing. The network administrator suspects packet loss. Which symptom is MOST consistent with this diagnosis?

Which network condition is characterized by data packets failing to reach their destination?

Keep studying — Network troubleshooting