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

 

Question 161

What does a static route explicitly define?

1. A DNS response policy
2. A destination prefix and forwarding path
3. A firewall logging interval
4. A NAT port reservation

Correct Answer: 2

Explanation:

A static route explicitly specifies a destination prefix and the next hop or forwarding path used to reach that destination. Unlike dynamically learned routes, static routes require administrators to define the routing information manually. They can be useful when a predictable path is required or when dynamic routing is unnecessary. DNS response policies, firewall logging intervals, and NAT port reservations perform different functions. When configuring static routes, engineers should carefully consider destination ranges, next-hop availability, route priority, and possible interactions with other routes. Incorrectly configured static routes can cause traffic to follow an unintended path or become unreachable.

Question 162

What is the primary function of an internal passthrough Network Load Balancer?

1. Distribute internal traffic to backend resources
2. Publish DNS records for backend applications
3. Establish BGP sessions with remote networks
4. Translate private addresses into public addresses

Correct Answer: 1

Explanation:

An internal passthrough Network Load Balancer distributes traffic from clients within supported internal network paths to backend resources. It provides an internal load-balancing endpoint without requiring the application to be exposed through a public frontend. The load balancer can support high-throughput traffic patterns while preserving appropriate packet characteristics for supported architectures. DNS records, BGP sessions, and NAT translation are separate networking functions. Engineers should select the appropriate internal load-balancing architecture according to protocol requirements, backend behavior, regional design, and the type of traffic that needs to be distributed.

Question 163

Which feature can restrict which consumers connect to a published PSC service?

1. Cloud CDN configuration
2. NAT IP allocation
3. Service attachment consumer controls
4. VPC Flow Logs sampling

Correct Answer: 3

Explanation:

A Private Service Connect service attachment can include controls that determine which consumers are permitted to connect to a published service. These controls allow service producers to manage consumer access rather than automatically exposing the service to every potential requester. Cloud CDN manages content delivery, NAT IP allocation handles address translation capacity, and VPC Flow Logs sampling affects traffic logging. Consumer authorization is an important part of designing a private service-publishing architecture because producers may need to limit access to approved projects, organizations, or other supported identities and configurations.

Question 164

Why might an organization use multiple Cloud Interconnect connections?

1. To eliminate subnet CIDR planning
2. To replace all DNS services
3. To automatically create firewall policies
4. To improve connectivity resilience and capacity

Correct Answer: 4

Explanation:

Multiple Cloud Interconnect connections can provide additional capacity and resilience for hybrid connectivity. Separate connections or paths can help reduce the impact of an individual circuit or connectivity failure and can provide additional bandwidth for organizations with substantial traffic requirements. Interconnect redundancy should be designed with appropriate physical and logical separation where required. Multiple connections do not eliminate subnet planning, replace DNS services, or automatically create firewall policies. Engineers should evaluate traffic volume, failure scenarios, geographic considerations, and service-level requirements when planning redundant Interconnect architectures.

Question 165

What is the main role of a VPC route table?

1. Determine paths for network destinations
2. Store application DNS records
3. Maintain Cloud Armor policies
4. Allocate external NAT addresses

Correct Answer: 1

Explanation:

VPC routing determines how packets are forwarded toward their destinations. Routes contain destination prefixes and corresponding next-hop information that help Google Cloud select an appropriate forwarding path. Routing decisions are separate from DNS record storage, Cloud Armor security policies, and NAT address allocation. Engineers should understand how subnet routes, custom static routes, dynamically learned routes, and other applicable routing information interact when troubleshooting connectivity. Route selection also considers destination specificity and applicable priorities. A clear understanding of routing behavior is essential when diagnosing why packets are reaching an unexpected destination or failing to reach the intended network.

Question 166

What does Cloud Router primarily manage in a hybrid network?

1. Packet encryption keys
2. Dynamic route exchange
3. DNS zone contents
4. Application cache objects

Correct Answer: 2

Explanation:

Cloud Router primarily provides dynamic route exchange using BGP with supported connected networks. It learns routes advertised by external peers and can advertise Google Cloud prefixes according to the applicable configuration. This capability is commonly used with Cloud Interconnect and HA VPN to maintain dynamic hybrid connectivity. Cloud Router does not manage packet encryption keys, DNS zone contents, or application cache objects. Those functions belong to different services. Engineers should configure BGP sessions carefully, including peer information, advertised prefixes, and routing policies, to ensure that the resulting connectivity matches the intended hybrid network architecture.

Question 167

Which load-balancing component performs backend health evaluation?

1. Forwarding rule
2. Frontend IP address
3. Health check
4. DNS record

Correct Answer: 3

Explanation:

A health check evaluates whether a backend is responding according to the configured health-check criteria. Load-balancing systems use health information to determine which backends are eligible to receive traffic. The forwarding rule handles frontend traffic direction, while the frontend IP identifies where clients connect. DNS records can map names to addresses but do not directly determine backend health. Correct health-check configuration is therefore essential for reliable traffic distribution. Engineers should ensure that the selected protocol, port, request path where applicable, and firewall access are compatible with the backend application.

Question 168

Which option helps expose a Google Cloud service privately to consumers?

1. Private Service Connect
2. Cloud CDN
3. Cloud NAT
4. Cloud Router

Correct Answer: 1

Explanation:

Private Service Connect provides a mechanism for supported services to be privately published and consumed. Service producers can publish services through supported configurations, while consumers can establish private connectivity to those services without requiring the service itself to be directly exposed through a public IP. Cloud CDN focuses on content delivery, Cloud NAT provides outbound address translation, and Cloud Router manages dynamic routing. Private Service Connect is particularly useful when organizations want controlled private service consumption across network or project boundaries while maintaining a clear producer-consumer relationship.

Question 169

What can firewall rule logging help an administrator investigate?

1. DNS record expiration
2. NAT IP purchasing history
3. BGP autonomous system changes
4. Which traffic matched a firewall rule

Correct Answer: 4

Explanation:

Firewall rule logging can provide information about traffic that matches applicable firewall rules. This can help administrators investigate whether specific connections are being allowed or denied and identify traffic patterns relevant to troubleshooting or security analysis. Firewall logs do not provide DNS record expiration information, NAT purchasing history, or BGP autonomous system changes. When investigating connectivity problems, engineers can correlate firewall logging with flow logs, routes, and application behavior to identify where traffic is being filtered. Proper logging configuration can provide valuable visibility without requiring packet capture for every troubleshooting scenario.

Question 170

What is the purpose of a subnet secondary IP range?

1. Provide an additional address range associated with a subnet
2. Replace the subnet’s primary range
3. Define a Cloud Router ASN
4. Store DNS forwarding rules

Correct Answer: 1

Explanation:

A secondary IP range provides an additional IP address range associated with a VPC subnet. Secondary ranges are useful for supported workloads and networking architectures that require addresses separate from the subnet’s primary range. They do not replace the primary subnet range, define Cloud Router autonomous system numbers, or store DNS forwarding rules. A common example involves allocating separate address space for specific workload requirements. Engineers should plan secondary ranges carefully and avoid overlaps with other network ranges that need to communicate, particularly in hybrid and multi-network environments.

Question 171

Which service can test connectivity between specified Google Cloud endpoints?

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

Correct Answer: 2

Explanation:

Network Intelligence Center Connectivity Tests helps analyze connectivity between specified endpoints and can identify configuration issues affecting the expected network path. It can evaluate relevant networking components such as routes and firewall configurations to help determine why traffic may not reach its destination. Cloud CDN manages content caching, Cloud DNS provides name resolution, and Cloud NAT performs address translation. Connectivity Tests is therefore useful when an engineer needs a structured way to investigate reachability without immediately relying on packet captures or manual inspection of every network component.

Question 172

What does a DNS peering configuration allow?

1. Exchange firewall rules between projects
2. Share Cloud NAT addresses
3. Forward DNS queries between DNS environments
4. Replicate BGP sessions automatically

Correct Answer: 3

Explanation:

Cloud DNS peering can allow DNS queries to be resolved across supported DNS environments by forwarding requests between configured DNS networks. This can help integrate name resolution across projects or network boundaries without duplicating every DNS record. DNS peering concerns name resolution and does not exchange firewall rules, share NAT addresses, or replicate BGP sessions. Engineers should distinguish DNS peering from DNS forwarding because the two mechanisms serve related but different architectural purposes. Proper network and DNS configuration is necessary so that queries can reach the intended DNS environment.

Question 173

Which design reduces the risk of a single VPN tunnel failure?

1. Using redundant VPN tunnels
2. Removing dynamic routing
3. Using one shared tunnel for every region
4. Disabling tunnel monitoring

Correct Answer: 1

Explanation:

Redundant VPN tunnels reduce dependence on a single tunnel and can allow connectivity to continue when one tunnel becomes unavailable. HA VPN is designed around redundant tunnel configurations and can work with dynamic routing for resilient connectivity. Removing dynamic routing does not itself provide tunnel redundancy, while using one tunnel for every region can create a larger single point of failure. Disabling monitoring would also reduce operational visibility. Engineers should consider tunnel redundancy, peer-device availability, routing behavior, and independent connectivity paths when designing highly available VPN architectures.

Question 174

What does Cloud CDN primarily cache?

1. BGP route advertisements
2. Eligible content responses
3. VPC firewall policies
4. Cloud NAT translations

Correct Answer: 2

Explanation:

Cloud CDN caches eligible content responses so that subsequent requests can potentially be served from an edge location rather than repeatedly reaching the origin backend. This can reduce latency for users and decrease the amount of repeated traffic sent to application backends. BGP advertisements, firewall policies, and NAT translations are not content objects managed by Cloud CDN. Cache behavior depends on the supported load-balancing configuration and applicable cache-control settings. Engineers should understand which application responses are cacheable and how cache policies affect freshness when integrating Cloud CDN into an application architecture.

Question 175

What is the purpose of an external IP address reservation?

1. Reserve a specific public IP for a resource
2. Create a private DNS zone
3. Establish a BGP peer
4. Allocate a subnet secondary range

Correct Answer: 1

Explanation:

An external IP address reservation allows an organization to reserve a specific public IP address for supported Google Cloud resources. This can be useful when an application requires a stable public address instead of relying on an ephemeral address that can change when a resource is recreated or reconfigured. External IP reservations do not create DNS zones, establish BGP peers, or allocate subnet secondary ranges. Engineers should distinguish between regional and global address resources and select the appropriate address type according to the resource and load-balancing architecture that will use it.

Question 176

Which factor is important when designing IPv6 connectivity?

1. Ignoring application protocol support
2. Reusing overlapping IPv6 prefixes
3. Verifying IPv6 firewall and routing behavior
4. Removing all IPv4 dependencies immediately

Correct Answer: 3

Explanation:

IPv6 deployments require careful consideration of routing and firewall behavior in addition to address planning. Applications, services, and network controls must support the protocol correctly for end-to-end connectivity to work as intended. Reusing overlapping IPv6 prefixes can create addressing and routing conflicts, while immediately removing all IPv4 dependencies may disrupt applications that still require IPv4. Engineers should evaluate dual-stack requirements, DNS behavior, firewall policies, routing paths, and application compatibility before introducing IPv6 into production environments. A staged approach can help identify protocol-specific issues before broader deployment.

Question 177

What can Network Intelligence Center Network Topology help visualize?

1. Relationships among network resources
2. Application source code dependencies
3. DNS registrar billing information
4. NAT subscription history

Correct Answer: 1

Explanation:

Network Intelligence Center Network Topology provides a visual representation of relationships among supported Google Cloud network resources and connectivity components. This can help engineers understand how networks, resources, and connections relate to one another and can assist with identifying architectural dependencies. Network Topology does not visualize application source-code dependencies, DNS registrar billing information, or NAT subscription history. Such visualization is valuable during troubleshooting and network planning because complex cloud environments can contain many interconnected components that are difficult to understand from isolated configuration screens.

Question 178

Which control can help limit access to a VPC service from specific network identities?

1. Cloud CDN cache configuration
2. Firewall rules
3. Cloud NAT address allocation
4. DNS TTL settings

Correct Answer: 2

Explanation:

VPC firewall rules can control network traffic to and from supported resources according to configured conditions such as source ranges, target characteristics, protocols, and ports. This allows administrators to restrict network access to only the traffic that should be permitted. Cloud CDN cache settings affect content delivery, Cloud NAT addresses affect outbound translation, and DNS TTL settings control caching duration for DNS responses. Firewall controls should be designed according to application dependencies and security requirements. Engineers should also understand how firewall rules interact with other applicable policy layers.

Question 179

Why should hybrid networks avoid overlapping address ranges?

1. Overlap can create ambiguous routing
2. Overlap automatically increases bandwidth
3. Overlap improves DNS resolution
4. Overlap creates additional NAT capacity

Correct Answer: 1

Explanation:

Overlapping address ranges can create ambiguous or conflicting routing when connected networks need to communicate. If the same destination addresses exist in multiple network locations, routers may be unable to distinguish which network should receive traffic, or Google Cloud may not support the required connectivity pattern. Address overlap does not increase bandwidth, improve DNS resolution, or create additional NAT capacity. Careful CIDR planning should therefore be performed before establishing hybrid connectivity, VPC peering, or other network relationships. A documented address-management strategy can prevent conflicts as the environment expands.

Question 180

Which component can provide a private endpoint for consuming a published PSC service?

1. Consumer-side Private Service Connect endpoint
2. Cloud Router BGP peer
3. Cloud CDN distribution
4. Cloud NAT gateway

Correct Answer: 4

Explanation:

A consumer-side Private Service Connect endpoint provides a private connection mechanism for accessing a supported published service. This allows consumers to reach the service through private networking rather than requiring direct public exposure. Cloud Router BGP peers exchange routing information, Cloud CDN manages cached content, and Cloud NAT handles outbound address translation. Engineers should distinguish the consumer connection from the producer’s service attachment because they represent different sides of the Private Service Connect architecture. Correct endpoint configuration also requires attention to addressing, DNS, permissions, and the service publication model being used.