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You are configuring a new instance of Cloud Router in your Organization's Google Cloud environment to allow connection across a new Dedicated Interconnect to your data center Sales, Marketing, and IT each have a service project attached to the Organization's host project. Where should you create the Cloud Router instance?
Answer: C
Reference: https://cloud.google.com/interconnect/docs/how-to/dedicated/using-interconnects-other-projects
You created a new VPC for your development team. You want to allow access to the resources in this VPC via SSH only. How should you configure your firewall rules?
Answer: C
Your on-premises data center has 2 routers connected to your GCP through a VPN on each router. All applications are working correctly; however, all of the traffic is passing across a single VPN instead of being load-balanced across the 2 connections as desired. During troubleshooting you find: "¢ Each on-premises router is configured with the same ASN. "¢ Each on-premises router is configured with the same routes and priorities. "¢ Both on-premises routers are configured with a VPN connected to a single Cloud Router. "¢ The VPN logs have no-proposal-chosen lines when the VPNs are connecting. "¢ BGP session is not established between one on-premises router and the Cloud Router. What is the most likely cause of this problem?
Answer: A
I will go with A Reason: If the VPN logs show a no-proposal-chosen error, this error indicates that Cloud VPN and your peer VPN gateway were unable to agree on a set of ciphers. For IKEv1, the set of ciphers must match exactly. For IKEv2, there must be at least one common cipher proposed by each gateway. Make sure that you use supported ciphers to configure your peer VPN gateway. https://cloud.google.com/network-connectivity/docs/vpn/support/troubleshooting#:~:text=If%20the%20VPN%20logs%20show,of%20ciphers%20must%20match%20exactly.&text=Make%20sure%20that%20you%20use,configure%20your%20peer%20VPN%20gateway.
Source: Adapted from community discussion — ArizonaClassics
You need to define an address plan for a future new GKE cluster in your VPC. This will be a VPC native cluster, and the default Pod IP range allocation will be used. You must pre-provision all the needed VPC subnets and their respective IP address ranges before cluster creation. The cluster will initially have a single node, but it will be scaled to a maximum of three nodes if necessary. You want to allocate the minimum number of Pod IP addresses. Which subnet mask should you use for the Pod IP address range?
Answer: B
I think it's B. "This will be a VPC native cluster, and the *default* Pod IP range allocation will be used." From https://cloud.google.com/kubernetes-engine/docs/how-to/flexible-pod-cidr#overview "With the *default* maximum of 110 Pods per node, Kubernetes assigns a /24 CIDR block (256 addresses) to each of the nodes." That is, /24 for one node. We have 3 nodes, so we need /22.
Source: Adapted from community discussion — groovygorilla
You have created a firewall with rules that only allow traffic over HTTP, HTTPS, and SSH ports. While testing, you specifically try to reach the server over multiple ports and protocols; however, you do not see any denied connections in the firewall logs. You want to resolve the issue. What should you do?
Answer: D
Correct Answer is (D): Firewall Rules Logging has the following specifications: You can only enable Firewall Rules Logging for rules in a Virtual Private Cloud (VPC) network. Legacy networks are not supported. Firewall Rules Logging only records TCP and UDP connections. Although you can create a firewall rule applicable to other protocols, you cannot log their connections. You cannot enable Firewall Rules Logging for the implied deny ingress and implied allow egress rules. Log entries are written from the perspective of virtual machine (VM) instances. Log entries are only created if a firewall rule has logging enabled and if the rule applies to traffic sent to or from the VM. Entries are created according to the connection logging limits on a best effort basis. The number of connections that can be logged in a given interval is based on the machine type. Changes to firewall rules can be viewed in VPC audit logs. https://cloud.google.com/vpc/docs/firewall-rules-logging#specifications
Source: Adapted from community discussion — ESP_SAP
In your company, two departments with separate GCP projects (code-dev and data-dev) in the same organization need to allow full cross-communication between all of their virtual machines in GCP. Each department has one VPC in its project and wants full control over their network. Neither department intends to recreate its existing computing resources. You want to implement a solution that minimizes cost. Which two steps should you take? (Choose two.)
Answer: BD
Answer is B & D. B: Minimizes cost and quickly. D: You need to create firewall rules to allow traffic between subnets over each VPC.
Source: Adapted from community discussion — mikelabs
You need to create a GKE cluster in an existing VPC that is accessible from on-premises. You must meet the following requirements: ✑ IP ranges for pods and services must be as small as possible. ✑ The nodes and the master must not be reachable from the internet. ✑ You must be able to use kubectl commands from on-premises subnets to manage the cluster. How should you create the GKE cluster?
Answer: D
Correct Answer is (D): Creating GKE private clusters with network proxies for controller access When you create a GKE private cluster with a private cluster controller endpoint, the cluster's controller node is inaccessible from the public internet, but it needs to be accessible for administration. By default, clusters can access the controller through its private endpoint, and authorized networks can be defined within the VPC network. To access the controller from on-premises or another VPC network, however, requires additional steps. This is because the VPC network that hosts the controller is owned by Google and cannot be accessed from resources connected through another VPC network peering connection, Cloud VPN or Cloud Interconnect. https://cloud.google.com/solutions/creating-kubernetes-engine-private-clusters-with-net-proxies
Source: Adapted from community discussion — ESP_SAP
You are creating an instance group and need to create a new health check for HTTP(s) load balancing. Which two methods can you use to accomplish this? (Choose two.)
Answer: AC
A and C. Unless you use target pool-based Network LB, then it's required to use legacy health check, otherwise, legacy health check is not recommended to be used for HTTP(S) LB. ref: https://cloud.google.com/load-balancing/docs/health-check-concepts
Source: Adapted from community discussion — densnoigaskogen
All the instances in your project are configured with the custom metadata enable-oslogin value set to FALSE and to block project-wide SSH keys. None of the instances are set with any SSH key, and no project-wide SSH keys have been configured. Firewall rules are set up to allow SSH sessions from any IP address range. You want to SSH into one instance. What should you do?
Answer: A
A is worked, I have tested as below 1) Created VM 2) Set enable-oslogin FALSE ( in compute engine metadata) as well in VM's metadata 3) None of the instances are set with any SSH key, and no project-wide SSH keys have been configured (set block project wide ssh key on VM) 4) firewall allow for tcp:22 5) Try to ssh from cloud shell and web console, worked able to ssh into VM 5)
Source: Adapted from community discussion — aa_desh
You are in the early stages of planning a migration to GCP. You want to test the functionality of your hybrid cloud design before you start to implement it in production. The design includes services running on a Compute Engine Virtual Machine instance that need to communicate to on-premises servers using private IP addresses. The on-premises servers have connectivity to the internet, but you have not yet established any Cloud Interconnect connections. You want to choose the lowest cost method of enabling connectivity between your instance and on-premises servers and complete the test in 24 hours. Which connectivity method should you choose?
Answer: A
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