Answer-first summary for fast verification
Answer: gcloud compute firewall-rules create open-ssh --network $NETWORK --allow tcp:22
The correct answer is **C** because the command `gcloud compute firewall-rules create` is utilized to establish firewall rules that permit or block incoming/outgoing traffic. Specifically, the `--allow tcp:22` parameter ensures that SSH traffic (which uses TCP port 22) is allowed through the firewall. This is crucial for SSH connections to succeed. - **Option A** is incorrect because port 3389 is designated for RDP (Remote Desktop Protocol), not SSH. - **Option B** is incorrect as it denies SSH traffic, which would prevent SSH logins. - **Option D** is incorrect because it lacks the necessary parameters to specify the action (allow/deny) and the protocol/port, leading to an error. For more detailed information, refer to the GCP documentation on Cloud SDK Firewall Rules.
Author: LeetQuiz Editorial Team
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Your developers are attempting to establish an SSH connection to an Ubuntu server for troubleshooting purposes, but the connection is timing out. Which command would most effectively resolve this issue?
A
gcloud compute firewall-rules create open-ssh --network $NETWORK --allow tcp:3389
B
gcloud compute firewall-rules create open-ssh --network $NETWORK --deny tcp:22
C
gcloud compute firewall-rules create open-ssh --network $NETWORK --allow tcp:22
D
gcloud compute firewall-rules create open-ssh
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