Professional-Cloud-Network-Engineer題庫分享，Professional-Cloud-Network-Engineer考試備考經驗

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Google Professional-Cloud-Network-Engineer Exam Syllabus Topics:

Section	Weight	Objectives
Configuring managed network services	16%	- Load balancing 1. Internal/external, regional/global types 2. Backend services, NEGs, health checks - Cloud NAT 1. Address allocation, port management - Cloud DNS 1. DNSSEC, logging 2. Public/private zones, forwarding, peering - Cloud CDN 1. Caching rules, origin configuration
Configuring hybrid and multi-cloud connectivity	14%	- Cloud Router 1. BGP configuration, route advertisement - Cloud VPN 1. Site-to-site, HA VPN, policy-based/route-based - Cloud Interconnect 1. Dedicated, Partner Interconnect, VLAN attachments
Configuring cloud network security solutions	12%	- Cloud Armor 1. Security policies, WAF rules, DDoS protection - VPC Service Controls 1. Service perimeters, access levels - Secure Web Proxy 1. URL filtering, access control
Managing, monitoring, and troubleshooting network operations	12%	- Monitoring and logging 1. Network Intelligence Center 2. Cloud Logging, Cloud Monitoring 3. VPC Flow Logs, Firewall Insights - Troubleshooting connectivity 1. Load balancer and packet loss diagnosis 2. VPN/Interconnect issues, BGP errors
Designing and planning a Google Cloud VPC network	26%	- Designing VPC networks 1. Private Service Access / Private Service Connect 2. Subnet design and CIDR planning 3. IP address management 4. Standalone vs Shared VPC - Designing hybrid and multi-cloud networks 1. Cloud Router and BGP design 2. Cloud Interconnect / Cloud VPN architecture - Designing overall network architecture 1. DNS topology design 2. High availability, disaster recovery, scalability 3. Network tiers (Premium/Standard) - Designing for GKE networking 1. Alias IP ranges, private control plane
Implementing a VPC network	20%	- VPC connectivity 1. Dynamic and static routing 2. VPC Peering, Shared VPC setup - Network Connectivity Center 1. Spoke and hub configuration - Configuring VPC resources 1. Networks, subnets, firewall rules/policies 2. Private Google Access, service accounts - Hierarchical firewalls and security policies 1. Cloud Next Generation Firewall

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最新的 Google Cloud Platform Professional-Cloud-Network-Engineer 免費考試真題 (Q175-Q180):

問題 #175
You are maintaining a Shared VPC in a host project. Several departments within your company have infrastructure in different service projects attached to the Shared VPC and use Identity and Access Management (IAM) permissions to manage the cloud resources in those projects. VPC Network Peering is also set up between the Shared VPC and a common services VPC that is not in a service project. Several users are experiencing failed connectivity between certain instances in different Shared VPC service projects and between certain instances and the internet. You need to validate the network configuration to identify whether a misconfiguration is the root cause of the problem. What should you do?

A. Run Connectivity Tests from Network Intelligence Center to check connectivity between the affected endpoints in your network and the internet.
B. Use Secure Shell (SSH) to connect to the affected Compute Engine instances, and run a series of PING tests to the other affected endpoints and the 8.8.8.8 IPv4 address.
C. Enable VPC Flow Logs for all VPCs, and review the logs in Cloud Logging for the affected instances.
D. Review the VPC audit logs in Cloud Logging for the affected instances.

答案：A

問題 #176
Your organization wants to seamlessly migrate a global external web application from Compute Engine to GKE. You need to deploy a simple, cloud-first solution that exposes both applications and sends 10% of the requests to the new application. What should you do?

A. Configure two separate global external Application Load Balancers, and use Cloud DNS geolocation routing policies.
B. Configure a global external Application Load Balancer with weighted traffic splitting.
C. Configure a global external Application Load Balancer with a Service Extension that points to an application running in a VM, which controls which requests go to each application.
D. Configure a global external Application Load Balancer with weighted request mirroring.

答案：B

解題說明：
Weighted traffic splitting allows you to gradually route a percentage of traffic to the new GKE application while still serving the majority of requests through the Compute Engine instance. This gradual transition minimizes risks and ensures seamless traffic distribution during migration.

問題 #177
Your organization has five different VPCs across different projects in y our Google Cloud organization that need high-throughput connectivity. You have performed an audit of the IP address utilization in each VPC, and there are two overlapping subnets that are used by two of the VPCs: 240.0.0.0/16 and 240.128.0.0/24. You have confirmed that no Class E subnets (240.0.0.0/4) will require inter-VPC connectivity, but all other subnets in the VPCs will need connectivity. You need to deploy a Google Cloud routing solution to meet the connectivity requirements. What should you do?

A. Create a series of multiple network interface VMs with an interface in each VPC. Place the VMs in an instance group. Create an internal passthrough Network Load Balancer in each VPC with the backend of the instance group. Configure custom static routes in each VPC with the next hop of the respective load balancer. Add Cloud network firewall policy rules to allow traffic.
B. Create a Network Connectivity Center hub with a mesh topology. Add a VPC spoke for each of the five VPCs and configure an export exclude filter for 240.0.0.0/4. Add Cloud network firewall policy rules to allow traffic.
C. Create a full mesh of VPC Network Peering connections between all five VPCs with an export exclude filter for 240.0.0.0/4 on every side. Add Cloud network firewall policy rules to allow traffic.
D. Create a full mesh of VPC Network Peering connections between all five VPCs. Make sure not to import or export subnet routes with public IP addresses. Add Cloud network firewall policy rules to allow traffic.

答案：B

解題說明：
Network Connectivity Center with a Mesh Topology: Network Connectivity Center (NCC) provides a scalable and managed solution for interconnecting multiple VPCs. A mesh topology allows all VPCs to communicate with each other without requiring direct peering connections between every pair of VPCs, simplifying the configuration and management for a high-throughput environment.
Exclusion of Overlapping Subnets: Using an export exclude filter for 240.0.0.0/4, you ensure that overlapping subnets within the Class E address range (240.0.0.0/4) are not included in the routing table, which avoids routing conflicts between the two overlapping subnets.
Firewall Policy Rules: Adding appropriate Cloud network firewall rules ensures that only authorized traffic is allowed between the VPCs, enhancing security and maintaining compliance with organizational policies.

問題 #178
You are migrating to Cloud DNS and want to import your BIND zone file.
Which command should you use?

A. gcloud dns record-sets import ZONE_FILE --zone MANAGED_ZONE
B. gcloud dns record-sets import ZONE_FILE --zone-file-format --zone MANAGED_ZONE
C. gcloud dns record-sets import ZONE_FILE --delete-all-existing --zone MANAGED ZONE
D. gcloud dns record-sets import ZONE_FILE --replace-origin-ns --zone MANAGED_ZONE

答案：B

解題說明：
--zone-file-format flag indicates that the input records-file is in BIND zone format. If omitted, indicates that the records-file is in YAML format.
https://cloud.google.com/sdk/gcloud/reference/dns/record-sets/import

問題 #179
Your company's web server administrator is migrating on-premises backend servers for an application to GCP. Libraries and configurations differ significantly across these backend servers. The migration to GCP will be lift-and-shift, and all requests to the servers will be served by a single network load balancer frontend.
You want to use a GCP-native solution when possible.
How should you deploy this service in GCP?

A. Use GCP's ECMP capability to load-balance traffic to the backend servers by installing multiple equal- priority static routes to the backend servers.
B. Deploy a third-party virtual appliance as frontend to these servers that will accommodate the significant differences between these backend servers.
C. Create a managed instance group from one of the images of the on-premises servers, and link this instance group to a target pool behind your load balancer.
D. Create a target pool, add all backend instances to this target pool, and deploy the target pool behind your load balancer.

答案：D

問題 #180
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