Google Professional Cloud Network Engineer Question 786
Select 2Google Cloud PlatformYou are a network engineer responsible for managing a company’s Google Cloud network infrastructure. Recently, users reported sporadic connectivity issues when accessing an application hosted on Compute Engine. Using Network Analyzer, you identify several warnings. Which of the following warnings are likely contributing to these connectivity issues?
- A
Firewall rules allow overly permissive ingress traffic.
- B
A route in the VPC network has an invalid next hop.
- C
Suboptimal MTU configuration between two peer networks.
- D
A VM instance has excessive idle CPU utilization.
- E
A subnet is nearing its IP address utilization limit.
Show answer and explanation
Correct answers: B, C
Explanation
Network Analyzer helps identify issues such as invalid routes and MTU mismatches that can disrupt connectivity. In this scenario, an invalid next hop in a route and suboptimal MTU configuration are the most likely root causes of the reported intermittent connectivity problems.
- A. Incorrect.
Firewall rules allowing overly permissive ingress traffic can be a security risk, but it is not directly related to sporadic connectivity issues.
- B. Correct.
An invalid next hop in a route can cause traffic to fail to reach its intended destination, leading to connectivity issues.
- C. Correct.
Suboptimal MTU (Maximum Transmission Unit) configuration can cause packet fragmentation or dropped packets, which can result in intermittent connectivity problems.
- D. Incorrect.
Excessive idle CPU utilization on a VM instance indicates underutilization of resources but does not directly affect network connectivity.
- E. Incorrect.
A subnet nearing its IP address utilization limit is a potential capacity issue, but it will not typically cause sporadic connectivity issues unless the IP pool is exhausted.