Practice Test 2 | Google Cloud Certified Associate Cloud Engineer | Dumps | Mock Test
You launched a compute engine in your google cloud project with a firewall rule which has only port 22 and ICMP enabled to your organization’s IP. You can ping the instance but when you try to connect to it via SSH, you get a “Connection Refused” error. What could cause this issue?
A. Port 22 is in use by another client machine
B. Request to SSH from organization IP is not valid
C. Instance service sshd is not running
D. Host machine is stopped
Explanation:
Answer C
C is correct. The only possible reason why ssh is timed out is due to sshd service running on the host machine has stopped. Hence, the service could be started by adding “service sshd start” as a startup script.
A is incorrect: Multiple clients can access host machine on port 22
B is incorrect: Access to the host machine is allowed only from the organization’s IP. Successful ping response means the connection is valid
D is incorrect: Stopped host machine does not respond to ping requests.
Link:
https://cloud.google.com/compute/docs/instances/connecting-to-instance
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