View Full Google Professional Cloud Network Engineer Exam Dumps and Practice Test Dumps

 

Question 21

Which VPC routing mode allows subnet routes to be advertised across all regions?

1. Local routing mode
2. Regional routing mode
3. Restricted routing mode
4. Global dynamic routing mode

Correct Answer: 4

Explanation:

Global dynamic routing mode allows Cloud Router to dynamically exchange routes across regions in a VPC network. This is useful when an organization has hybrid connectivity requirements involving resources or subnets in multiple Google Cloud regions. Regional dynamic routing mode limits dynamic route advertisement to the region where the Cloud Router is located. Choosing the appropriate routing mode depends on how broadly hybrid routes need to be available within the VPC. Global routing can simplify architectures where connected external networks must reach workloads distributed across several Google Cloud regions.

Question 22

Which Google Cloud architecture allows multiple projects to use centrally managed VPC resources?

1. VPC Peering
2. Shared VPC
3. Cloud VPN
4. Private Service Connect

Correct Answer: 2

Explanation:

Shared VPC allows an organization to centrally manage a VPC network in a host project while permitting resources in attached service projects to use selected subnets. This model is useful for organizations that want centralized network administration while allowing different teams or applications to operate in separate projects. VPC Peering connects independent VPC networks, Cloud VPN provides encrypted network connectivity, and Private Service Connect supports private service consumption. Shared VPC therefore provides a structured way to separate project administration from centralized network ownership and governance.

Question 23

What is a key limitation of VPC Network Peering between connected networks?

1. Peered networks cannot use internal IP addresses
2. Peering automatically exposes services publicly
3. Peering is not transitive through another VPC
4. Peering disables subnet-level configuration

Correct Answer: 3

Explanation:

VPC Network Peering does not provide transitive connectivity. If VPC network A peers with network B and network B peers with network C, network A cannot automatically communicate with network C through B. Each required connectivity relationship must be designed explicitly or implemented using another architecture. Peering does support private communication using internal addresses, and it does not inherently expose services to the public internet. Understanding the non-transitive nature of peering is important when designing environments with several independent VPC networks.

Question 24

Which Google Cloud service helps identify connectivity problems by testing a network path between endpoints?

1. Network Intelligence Center Connectivity Tests
2. Cloud CDN
3. Cloud DNS
4. Cloud NAT

Correct Answer: 1

Explanation:

Connectivity Tests, part of Network Intelligence Center, helps network engineers analyze whether connectivity exists between selected endpoints. It evaluates the relevant network configuration and can help identify problems involving routes, firewall rules, forwarding behavior, and other connectivity controls. This makes it particularly useful for troubleshooting without manually inspecting every networking component. Cloud CDN focuses on content delivery, Cloud DNS handles domain resolution, and Cloud NAT provides outbound address translation. Connectivity Tests therefore provides a diagnostic capability for understanding why traffic can or cannot reach its intended destination.

Question 25

What is the purpose of a proxy-only subnet for supported Google Cloud load balancers?

1. It stores DNS zone records
2. It provides addresses for proxy components handling client connections
3. It reserves public addresses for backend VMs
4. It carries Cloud Router BGP advertisements

Correct Answer: 2

Explanation:

A proxy-only subnet provides IP addresses for proxy components used by certain Google Cloud proxy-based load-balancing architectures. The subnet is dedicated to these proxy resources rather than being used like an ordinary workload subnet. This design allows the load-balancing infrastructure to receive and process connections before forwarding appropriate traffic to backend resources. It is therefore important to size and configure proxy-only subnets according to the requirements of the load balancer. DNS records, public VM addresses, and BGP route advertisements are handled by different Google Cloud networking components.

Question 26

Which load-balancing characteristic allows an internal load balancer to serve clients across regions when configured appropriately?

1. Global access
2. DNS forwarding
3. NAT traversal
4. Route import filtering

Correct Answer: 1

Explanation:

Global access is a feature that can allow eligible internal load-balancing configurations to receive traffic from clients located in other regions. Without the appropriate configuration, internal load-balancer accessibility may be limited according to regional network behavior. Global access can therefore be useful when an application has clients distributed across multiple Google Cloud regions but still needs an internal service endpoint. DNS forwarding and NAT address different networking requirements, while route import filtering is not the mechanism that provides this load-balancer accessibility behavior.

Question 27

Which DNS configuration is designed for resolving names privately inside a VPC network?

1. Public DNS delegation
2. Private DNS zone
3. External DNS registrar
4. Internet-facing DNS proxy

Correct Answer: 2

Explanation:

A Cloud DNS private zone provides DNS records that can be resolved within selected VPC networks without publishing those records publicly. This is useful for internal applications, service discovery, and private naming requirements. Administrators can create private DNS namespaces that are meaningful only to authorized network environments. Public DNS delegation and internet-facing DNS configurations are intended for externally resolvable names. A private DNS zone therefore helps maintain internal naming while keeping private application addresses and records away from public DNS resolution.

Question 28

What does VPC Service Controls primarily provide for supported Google Cloud services?

1. Application traffic distribution
2. Dynamic BGP routing
3. A security perimeter around supported services
4. Public IP address translation

Correct Answer: 3

Explanation:

VPC Service Controls helps reduce the risk of data exfiltration by creating security perimeters around supported Google Cloud services. It provides an additional security layer that is different from traditional network firewall controls. The service can restrict access based on configured perimeter rules and contextual conditions. It does not function as a load balancer, BGP routing system, or NAT service. VPC Service Controls is particularly relevant when organizations need stronger boundaries around sensitive data stored or processed by supported managed Google Cloud services.

Question 29

Which feature records information about traffic observed by VPC network interfaces?

1. Cloud CDN logs
2. VPC Flow Logs
3. Cloud DNS records
4. Interconnect VLAN statistics

Correct Answer: 2

Explanation:

VPC Flow Logs provide visibility into network traffic flowing to and from resources associated with VPC subnets. The information can help administrators understand communication patterns, investigate connectivity issues, and support security analysis. Flow Logs are metadata-oriented rather than packet-content captures, making them useful for observing traffic without directly inspecting application payloads. Cloud CDN logs, DNS records, and Interconnect statistics serve different purposes. VPC Flow Logs are therefore an important diagnostic and monitoring capability for understanding traffic behavior within Google Cloud networks.

Question 30

Which Google Cloud feature can inspect mirrored network traffic for security or troubleshooting purposes?

1. Cloud DNS forwarding
2. Packet Mirroring
3. Cloud NAT
4. Cloud Interconnect

Correct Answer: 2

Explanation:

Packet Mirroring copies selected network traffic from supported workloads and sends the mirrored traffic to a collector for inspection. This capability can be useful for security monitoring, intrusion detection, troubleshooting, and traffic analysis. The mirrored packets can be examined without requiring the original application traffic to be redirected through the inspection system. Cloud DNS forwarding handles name resolution, Cloud NAT translates outbound addresses, and Cloud Interconnect provides private connectivity. Packet Mirroring is therefore the networking feature specifically designed to replicate traffic for analysis.

Question 31

Which load-balancing component defines the group of backends that receive distributed traffic?

1. DNS zone
2. Backend service
3. NAT gateway
4. Cloud Router

Correct Answer: 2

Explanation:

A backend service represents the backend resources and associated configuration used by supported Google Cloud load balancers. It can define aspects such as backend groups, health checks, balancing behavior, and other traffic-handling settings depending on the load-balancing architecture. The load balancer uses this configuration to determine where traffic should be directed. DNS zones manage name resolution, NAT gateways handle address translation, and Cloud Router manages dynamic routing. Understanding the backend service concept is important when configuring how a load balancer distributes requests among application resources.

Question 32

What is the main purpose of a Network Endpoint Group (NEG)?

1. To represent specific network endpoints as load-balancing backends
2. To create VPC firewall hierarchy
3. To allocate Cloud DNS zones
4. To establish BGP authentication

Correct Answer: 1

Explanation:

A Network Endpoint Group provides a way to define collections of network endpoints that can be used with supported Google Cloud services, particularly load balancing. Depending on the NEG type, endpoints can represent different kinds of resources or service architectures. This provides more granular control than simply treating an entire VM group as a backend. NEGs are especially useful in architectures involving containerized applications, serverless services, or specific network endpoints. Firewall policies, DNS zones, and BGP authentication are separate networking concerns and are not the primary purpose of a NEG.

Question 33

Which Google Cloud security service helps protect internet-facing applications from common web attacks?

1. Cloud Router
2. Cloud DNS
3. Cloud Armor
4. Cloud NAT

Correct Answer: 3

Explanation:

Cloud Armor provides security capabilities for applications exposed through supported Google Cloud load-balancing architectures. It can help protect applications against various web-based attacks and unwanted traffic using configurable security policies. Cloud Armor can also contribute to DDoS protection strategies and allow administrators to define rules for controlling requests. Cloud Router handles dynamic routing, Cloud DNS provides DNS services, and Cloud NAT manages outbound translation. Cloud Armor is therefore the service most directly associated with protecting supported internet-facing applications at the network edge.

Question 34

Which Cloud DNS feature allows DNS queries to be sent to another DNS environment?

1. DNSSEC signing
2. Managed public zones
3. DNS forwarding
4. Resource record sets

Correct Answer: 3

Explanation:

Cloud DNS forwarding allows DNS queries to be forwarded to designated DNS servers under supported configurations. This is useful in hybrid environments where Google Cloud workloads need to resolve names managed by an on-premises or other external DNS infrastructure. Forwarding helps integrate different DNS namespaces without requiring all records to be duplicated in Cloud DNS. DNSSEC provides DNS security mechanisms, managed zones contain DNS records, and resource record sets define individual DNS information. Forwarding is therefore the feature focused on directing DNS queries to another DNS resolution environment.

Question 35

What is a major purpose of Cloud CDN when used with supported load balancing?

1. To cache eligible content closer to users
2. To create BGP sessions with on-premises routers
3. To assign secondary subnet ranges
4. To establish private VPN tunnels

Correct Answer: 1

Explanation:

Cloud CDN improves content delivery by caching eligible content at Google’s distributed edge locations. When users request cacheable content, serving it from an edge location closer to the user can reduce latency and decrease repeated requests to the origin backend. Cloud CDN works with supported load-balancing architectures and is particularly useful for frequently requested static or cacheable content. It does not establish BGP sessions, create subnet ranges, or provide VPN tunnels. Its main purpose is improving content delivery efficiency by using geographically distributed caching infrastructure.

Question 36

Which connectivity option uses a service provider to connect an external network to Google Cloud?

1. Dedicated Interconnect
2. Partner Interconnect
3. Cloud DNS
4. HA VPN

Correct Answer: 2

Explanation:

Partner Interconnect provides connectivity to Google Cloud through a supported service provider. It can be useful when an organization does not have a suitable physical facility or direct connection for Dedicated Interconnect. The service provider supplies the connectivity path while Google Cloud provides the corresponding interconnect architecture. Dedicated Interconnect uses a direct physical connection with Google’s network, while HA VPN establishes encrypted tunnels over an IP-based network. Partner Interconnect is therefore the appropriate choice when a service-provider-assisted connection model is required.

Question 37

What does an HA VPN configuration primarily provide?

1. Managed DNS resolution
2. Cached application content
3. Highly available encrypted connectivity between networks
4. Automatic subnet creation

Correct Answer: 3

Explanation:

HA VPN provides highly available encrypted connectivity between compatible networks using VPN tunnels. It is designed to provide redundancy and can use dynamic routing through BGP in supported configurations. This makes HA VPN useful for connecting on-premises environments with Google Cloud when encrypted connectivity and high availability are required. DNS resolution, content caching, and automatic subnet creation are handled by other services. Network engineers should also consider tunnel redundancy, routing configuration, and peer-side capabilities when designing an HA VPN deployment.

Question 38

Which interconnect component logically connects a VLAN attachment to a Google Cloud VPC network?

1. Cloud DNS zone
2. Firewall policy
3. VLAN attachment
4. Cloud Router

Correct Answer: 4

Explanation:

Cloud Router works with VLAN attachments to exchange dynamic routes between Google Cloud and an external network over Cloud Interconnect. The VLAN attachment represents the logical connectivity between the external network and Google’s network, while Cloud Router provides the dynamic routing component. In a typical hybrid architecture, both pieces work together to establish and manage route exchange. DNS zones and firewall policies serve different functions. Understanding the relationship between Cloud Router and VLAN attachments is important when configuring dynamic routing for Interconnect-based hybrid connectivity.

Question 39

Which network diagnostic capability displays relationships between VPC networks and connected resources?

1. Network Topology
2. Cloud NAT
3. Cloud CDN
4. Private Google Access

Correct Answer: 1

Explanation:

Network Topology, available through Network Intelligence Center, provides a visual representation of network relationships and traffic-related infrastructure across supported Google Cloud resources. It can help engineers understand how VPC networks, instances, load balancers, and other networking components relate to one another. This visibility can simplify troubleshooting and make complex network environments easier to analyze. Cloud NAT, Cloud CDN, and Private Google Access provide operational networking capabilities rather than topology visualization. Network Topology is therefore useful when the goal is to understand the structure and relationships within a cloud network.

Question 40

Why are firewall rule logs useful during network troubleshooting?

1. They automatically increase subnet capacity
2. They provide visibility into firewall rule decisions
3. They replace all VPC routes
4. They assign external addresses to instances

Correct Answer: 2

Explanation:

Firewall rule logging provides visibility into traffic that matches configured firewall rules and can help engineers understand whether network traffic is being allowed or denied. This information can be valuable when diagnosing unexpected connectivity behavior or validating security policies. Logs can help identify which rules are being evaluated and provide additional context about matching traffic. Firewall logging does not modify subnet capacity, replace routing configuration, or assign public IP addresses. It is primarily a visibility and troubleshooting capability that helps network administrators investigate firewall behavior more effectively.