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How to Prepare For Google Professional Cloud Network Engineer Exam

Preparation Guide for Google Professional Cloud Network Engineer Exam

Introduction

Google has designed a track for IT professionals to endorse as a cloud Network Engineer on the GCP platform. This accreditation program gives Google cloud professionals a way to endorse their skills. The evaluation relies on a meticulous exam using industry standard methodology to conclude whether or not a aspirant meets Google's proficiency standards.

According to Google, a Google Certified Professional Cloud Network Engineer facilitate organizations to influence Google Cloud technologies. By leveraging experience implementing VPCs, network services, hybrid connectivity and security for established network architectures, this individual ensures successful cloud implementations using the Google Cloud Platform Console or the command line interface .

Certification is evidence of your skills, expertise in those areas in which you like to work. If candidate wants to work on Google Professional Cloud Network Engineer and prove his knowledge, certification offered by Google. This Google Professional Cloud Network Engineer Certification helps a candidate to validates his skills in Google Professional Cloud Network Engineer Technology.

In this guide, we will cover the Google Professional Cloud Network Engineer Exam, Google Professional Cloud Network Engineer Certified Professionals salary and all aspects of the Google Professional Cloud Network Engineer Certification.

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Configure Network Services

Enable other Network Services: This module includes canary releases, health checks for instance groups, enabling of the private API access, and distribution of the backend instances with the use of regional managed instance groups.
Configure & Maintain Cloud DNS: The applicants should demonstrate competence in the management of records and zones, migration of Cloud DNS, Cloud DNS, DNS Security, Internal DNS, Global service with Anycast, and Integration of on-premises DNS with GCP;
Configure Load Balancing: The considerations for this subsection include the creation of backend services, security & firewall, network load balancer, SSL & TCP proxy load balancers, session affinity, internal load balancer, capacity scaling, and HTTP load balancer;

Google Cloud Certified - Professional Cloud Network Engineer Sample Questions (Q157-Q162):

NEW QUESTION # 157
You have several VMs across multiple VPCs in your cloud environment, which require access to internet endpoints. These VMs cannot have public IP addresses due to security policies, so you plan to use Cloud NAT to provide outbound internet access. Within your VPCs, you have several subnets in each region. You want to ensure that only specific subnets have access to the internet through Cloud NAT. You want to avoid any unintentional configuration issues caused by other administrators, and align to Google-recommended practices. What should you do?

A. Deploy Cloud NAT in each VPC, and configure a custom source range that includes the allowed subnets. Configure Cloud NAT rules to only permit the allowed subnets to egress through Cloud NAT.
B. Create a firewall rule in each VPC at priority 500 that targets all instances in the network and denies egress to the internet, 0.0.0.0/0. Create a firewall rule at priority 300 that targets all instances in the network, has a source filter that maps to the allowed subnets, and allows egress to the internet, 0.0.0.0/0. Deploy Cloud NAT, and configure a custom source range that includes the allowed subnets.
C. Create a constraints/compute.restrictCloudNATUsage organizational policy constraint. Attach the constraint to a folder that contains the associated projects. Configure the allowedValues to only contain the subnets that should have internet access. Deploy Cloud NAT and select only the allowed subnets.
D. Create a firewall rule in each VPC at priority 500 that targets all instances in the network and denies egress to the internet, 0.0.0.0/0. Create a firewall rule at priority 300 that targets all instances in the network, has a source filter that maps to the allowed subnets, and allows egress to the internet, 0.0.0.0/0. Deploy Cloud NAT, and configure all primary and secondary subnet source ranges.

Answer: A

Explanation:
Cloud NAT with Custom Source Ranges: Cloud NAT allows you to configure a custom source range that limits which subnets can use it for outbound internet access. By specifying the allowed subnets only, you can ensure that no unauthorized subnet can unintentionally or maliciously use Cloud NAT for egress.
Cloud NAT Rules for Subnet-Specific Control: Configuring rules in Cloud NAT allows fine-grained control over which subnets have access to the internet. This aligns with Google-recommended practices for securing internet access and avoiding configuration errors.
Avoiding Unintentional Configuration Issues: By using Cloud NAT's built-in configuration options (custom source ranges and NAT rules), you eliminate the need for additional firewall rules or complex organizational policies, reducing the likelihood of misconfiguration by administrators.

NEW QUESTION # 158
You need to configure a static route to an on-premises resource behind a Cloud VPN gateway that is configured for policy-based routing using the gcloud command.
Which next hop should you choose?

A. The IP address of the Cloud VPN gateway
B. The name and region of the Cloud VPN tunnel
C. The IP address of the instance on the remote side of the VPN tunnel
D. The default internet gateway

Answer: B

Explanation:
When you create a route based tunnel using the Cloud Console, Classic VPN performs both of the following tasks: Sets the tunnel's local and remote traffic selectors to any IP address (0.0.0.0/0) For each range in Remote network IP ranges, Google Cloud creates a custom static route whose destination (prefix) is the range's CIDR, and whose next hop is the tunnel. https://cloud.google.com/network-connectivity/docs/vpn/how-to/creating-static-vpns

NEW QUESTION # 159
Your company deployed Cloud Next Generation Firewall Enterprise (Cloud NGFW Enterprise).
You have already created a CA pool and a CA in Certificate Authority Service. You need to enable TLS inspection. What should you do?

A. Grant the network security service agent service account the privateca.poolReader role. Create a TLS inspection policy linking to the CA pool. Configure your VPC endpoint associations to use the TLS inspection policy. Flip the TLS inspection flag in your firewall policy rules to true.
B. Grant the network security service agent service account the privateca.certificateRequester role.
Create a trust config in Certificate Manager Flip the TLS inspection flag in your firewall policy rules to true.
C. Grant the network security service agent service account the privateca.certificateRequester role.
Create a TLS inspection policy linking to the CA pool. Configure your VPC endpoint associations to use the TLS inspection policy. Flip the TLS inspection flag in your firewall policy rules to true.
D. Grant the network security service agent service account the privateca.certificateRequester role.
Create a trust config in Certificate Manager. Flip the TLS inspection flag in your firewall policy rules to true.

Answer: C

Explanation:
To enable TLS inspection in Cloud Next Generation Firewall Enterprise, follow these steps:
1. Grant the proper role: The privateca.certificateRequester role must be granted to the network security service agent service account. This role is required to allow the service to request certificates from the CA pool created in Certificate Authority Service.
2. Create a TLS inspection policy: The TLS inspection policy needs to link to the CA pool. This policy defines the CA pool used for TLS decryption and inspection.
3. Configure VPC endpoint associations: You need to associate the TLS inspection policy with your VPC endpoint to enable inspection for traffic flowing through it.
4. Flip the TLS inspection flag: The TLS inspection flag in your firewall policy rules must be enabled to apply the TLS inspection policy for traffic.

NEW QUESTION # 160
You are implementing a VPC architecture for your organization by using a Network Connectivity Center hub and spoke topology:
* There is one Network Connectivity Center hybrid spoke to receive on-premises routes.
* There is one VPC spoke that needs to be added as a Network Connectivity Center spoke.
Your organization has limited routable IP space fortheir cloud environment (192.168.0.0/20). The Network Connectivity Center spoke VPC is connected to on-premises with a Cloud Interconnect connection in the us- east4 region. The on-premises IP range is 172.16.0.0/16. You need to reach on-premises resources from multiple Google Cloud regions (us-westl, europe-centrall, and asia-southeastl) and minimize the IP addresses being used. What should you do?

A. O 1. Configure a Private NAT gateway and NAT subnet in us-westl (192.168.1.0/24), europe-centrall (192.168.2.0/24) and asia-southeastl (192.168.3.0/24).
2. Add the VPC as a spoke and configure an export include policy to advertise only 192.168.1.0/24,
192.168.2.0/24, and 192.168.3.0/24 to the hub.
3. Enable global dynamic routing to allow resources in us-westl, us-centrall and asia-southeastl to reach the on-premises location through us-east4.
B. Q 1. Configure a Private NAT gateway instance in us-westl (192.168.1.0/24), europe-centrall (192.168.2.0/24), and asia-southeastl (192.168.3.0/24).
2. Add the VPC as a spoke and configure an export exclude policy on the VPC spoke to advertise only the NAT subnets 192.168.1.0/24, 192.168.2.0/24, and 192.168.3.0/24 to the hub.
3. Enable global dynamic routing to allow resources in us-westl, us-centrall, and asia-southeastl to reach the on-premises location through us-east4.
C. O 1- Configure a Private NAT gateway instance in us-westl (172.16.1.0/24), europe-centrall (172.16.2.0
/24), and asia-southeastl (172.16.3.0/24).
2. Add the VPC as a spoke and configure an export include policy on the VPC spoke to advertise only the NAT subnets 172.16.1.0/24, 172.16.2.0/24, and 172.16.3.0/24 to the hub.
3. Enable global dynamic to allow resources in us-westl, us-centrall, and asia-southeastl to reach the on- premises location through us-east4.
D. Q 1. Configure a Private NAT gateway instance in us-east4 (192.168.1.0/24).
2. Add the VPC as a spoke and configure an export include policy on the VPC spoke to advertise
192.168.1.0/24 to the hub.
3. Enable global dynamic routing to allow resources in us-westl, us-centrall and asia-southeast l to reach the on-premises location through us-east 4.

Answer: D

Explanation:
The key requirements are: limited IP space (192.168.0.0/20), reaching on-premises (172.16.0.0/16) from multiple Google Cloud regions (us-west1, europe-central1, asia-southeast1), and minimizing IP addresses used. The Cloud Interconnect connection to on-premises is in us-east4.
Minimize IP addresses and centralized NAT: Since all traffic to on-premises will traverse the Cloud Interconnect in us-east4, it's most efficient to configure a single Private NAT gateway instance in us-east4.
This allows resources from other regions to egress to on-premises through this single NAT gateway, using a minimal NAT subnet (192.168.1.0/24 in this case), thus conserving the limited 192.168.0.0/20 IP space.
Network Connectivity Center Spoke Export Policy: The VPC spoke needs to advertise the NAT subnet to the Network Connectivity Center hub. An export include policy is used to specify which routes (in this case, the
192.168.1.0/24 NAT subnet) should be advertised to the hub.
Global Dynamic Routing: To allow resources in us-west1, europe-central1, and asia-southeast1 to reach the on-premises location through the us-east4 Cloud Interconnect and NAT gateway, the VPC containing these resources (the spoke VPC) must have global dynamic routing enabled. This ensures that routes learned in one region (like the on-premises routes via us-east4) are available to VMs in all other regions of that VPC.
Options A and B configure Private NAT gateways in multiple regions, which consumes more IP addresses than necessary given that the Cloud Interconnect is only in us-east4. Option D uses 172.16.x.x for NAT subnets, which clashes with the on-premises IP range and the requirement to use the 192.168.0.0/20 space for cloud.
Exact Extract:
"Private NAT allows instances with private IP addresses in one VPC network to connect to on-premises or other cloud networks through a NAT IP address in a different region or network."
"To allow VMs in multiple regions to reach a central destination through a NAT gateway located in a specific region, you must configure global dynamic routing on the VPC network. This ensures that routes to the NAT gateway's subnet are propagated across all regions."
"When using Network Connectivity Center spokes, you can use export policies to control which routes are advertised from a spoke to the hub. An include policy specifies the exact prefixes to advertise."Reference:
Google Cloud Private NAT Documentation, Network Connectivity Center Documentation - Spoke policies, VPC Network Documentation - Dynamic routing mode

NEW QUESTION # 161
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?

A. /21
B. /23
C. /25
D. /22

Answer: D

Explanation:
https://cloud.google.com/kubernetes-engine/docs/how-to/alias-ips#cluster_sizing_secondary_range_pods

NEW QUESTION # 162
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