Professional Cloud Network Engineer Practice Test

Professional Cloud Network Engineer Practice Test practice questions, page 5 of 13, with answer review and explanations.

Question 21

You are increasing your usage of Cloud VPN between on-premises and GCP, and you want to support more traffic than a single tunnel can handle. You want to increase the available bandwidth using Cloud VPN. What should you do?

  1. Double the MTU on your on-premises VPN gateway from 1460 bytes to 2920 bytes.
  2. Create two VPN tunnels on the same Cloud VPN gateway that point to the same destination VPN gateway IP address.
  3. Add a second on-premises VPN gateway with a different public IP address. Create a second tunnel on the existing Cloud VPN gateway that forwards the same IP range, but points at the new on-premises gateway IP.
  4. Add a second Cloud VPN gateway in a different region than the existing VPN gateway. Create a new tunnel on the second Cloud VPN gateway that forwards the same IP range, but points to the existing on-premises VPN gateway IP address.

Question 22

You are disabling DNSSEC for one of your Cloud DNS-managed zones. You removed the DS records from your zone file, waited for them to expire from the cache, and disabled DNSSEC for the zone. You receive reports that DNSSEC validating resolves are unable to resolve names in your zone. What should you do?

  1. Update the TTL for the zone.
  2. Set the zone to the TRANSFER state.
  3. Disable DNSSEC at your domain registrar.
  4. Transfer ownership of the domain to a new registrar.

Question 23

You have an application hosted on a Compute Engine virtual machine instance that cannot communicate with a resource outside of its subnet. When you review the flow and firewall logs, you do not see any denied traffic listed. During troubleshooting you find: "¢ Flow logs are enabled for the VPC subnet, and all firewall rules are set to log. "¢ The subnetwork logs are not excluded from Stackdriver. "¢ The instance that is hosting the application can communicate outside the subnet. "¢ Other instances within the subnet can communicate outside the subnet. "¢ The external resource initiates communication. What is the most likely cause of the missing log lines?

  1. The traffic is matching the expected ingress rule.
  2. The traffic is matching the expected egress rule.
  3. The traffic is not matching the expected ingress rule.
  4. The traffic is not matching the expected egress rule.

Question 24

You have configured Cloud CDN using HTTP(S) load balancing as the origin for cacheable content. Compression is configured on the web servers, but responses served by Cloud CDN are not compressed. What is the most likely cause of the problem?

  1. You have not configured compression in Cloud CDN.
  2. You have configured the web servers and Cloud CDN with different compression types.
  3. The web servers behind the load balancer are configured with different compression types.
  4. You have to configure the web servers to compress responses even if the request has a Via header.

Question 25

You have a web application that is currently hosted in the us-central1 region. Users experience high latency when traveling in Asia. You've configured a network load balancer, but users have not experienced a performance improvement. You want to decrease the latency. What should you do?

  1. Configure a policy-based route rule to prioritize the traffic.
  2. Configure an HTTP load balancer, and direct the traffic to it.
  3. Configure Dynamic Routing for the subnet hosting the application.
  4. Configure the TTL for the DNS zone to decrease the time between updates.