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Question 201

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

1. DNS forwarding
2. DNSSEC signing
3. Managed SSL
4. Anycast routing

Correct Answer: 1

Explanation:

Cloud DNS forwarding allows DNS queries to be forwarded to specified DNS servers. This is useful in hybrid environments where Google Cloud workloads need to resolve names hosted outside the Cloud DNS environment, such as private corporate domains. Forwarding can help integrate cloud and on-premises name-resolution architectures without requiring every DNS record to be duplicated. DNSSEC signing, SSL management, and anycast routing serve different purposes. When designing forwarding, engineers should consider the reachable resolver addresses, forwarding-zone configuration, routing path, and firewall requirements so that DNS requests can successfully reach the intended upstream servers.

Question 202

What does a Cloud Router BGP session establish?

1. A DNS synchronization channel
2. A dynamic route exchange relationship
3. A firewall inspection tunnel
4. A NAT allocation pool

Correct Answer: 2

Explanation:

A Cloud Router BGP session establishes a dynamic routing relationship between Cloud Router and a compatible external BGP peer. Through this relationship, the peers can exchange reachability information and dynamically update routes when network conditions or advertisements change. This is commonly used with hybrid connectivity through Cloud Interconnect or supported HA VPN configurations. A BGP session does not synchronize DNS records, inspect firewall traffic, or allocate NAT addresses. Engineers should configure matching peer parameters, appropriate IP addresses, ASN information, and route advertisements to establish reliable dynamic routing.

Question 203

What is the main purpose of a proxy-only subnet?

1. Provide addresses for proxy-based load-balancing components
2. Store persistent disk snapshots
3. Allocate Cloud DNS names
4. Host BGP route databases

Correct Answer: 1

Explanation:

A proxy-only subnet supplies IP addresses used by certain proxy-based Google Cloud load-balancing architectures. Traffic handled through the relevant proxy infrastructure can originate from addresses associated with this subnet before reaching backend resources. This is different from ordinary workload subnets, which directly contain VM or other resource interfaces. Proxy-only subnets do not store disk snapshots, provide DNS names, or maintain BGP databases. Engineers should create and size these subnets according to the requirements of the applicable regional load-balancing configuration and ensure that backend firewall rules permit the necessary traffic.

Question 204

Which VPC feature allows multiple projects to use centrally managed subnets?

1. VPC Peering
2. Cloud NAT
3. Shared VPC
4. Cloud CDN

Correct Answer: 3

Explanation:

Shared VPC allows a host project to provide centrally managed VPC networking resources to workloads deployed in associated service projects. This model separates network administration from application ownership while maintaining centralized control over shared subnets and related networking resources. VPC Peering instead connects separate VPC networks, Cloud NAT provides outbound address translation, and Cloud CDN caches content closer to users. Shared VPC is particularly useful for organizations that need centralized network governance while allowing different teams or projects to deploy their own applications within approved network boundaries.

Question 205

Which component determines where a load balancer sends traffic after frontend processing?

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

Correct Answer: 2

Explanation:

The backend service configuration determines the backend resources that can receive traffic after a load balancer processes the incoming request. Depending on the load-balancing architecture, the backend service can incorporate backend endpoints, balancing behavior, health checks, and related configuration. DNS zones resolve names, Cloud Router advertises routes, and NAT rules translate addresses. Engineers troubleshooting unexpected traffic distribution should inspect the backend service and its associated backend resources rather than assuming the frontend alone controls the destination. Healthy backend status and appropriate firewall rules are also important for successful traffic delivery.

Question 206

What does VPC Network Peering primarily provide?

1. Direct private connectivity between VPC networks
2. Automatic internet gateway deployment
3. Application-layer threat detection
4. Public DNS registration

Correct Answer: 1

Explanation:

VPC Network Peering provides private connectivity between separate VPC networks using Google’s network infrastructure. It allows resources in peered networks to communicate using internal addressing when the relevant routes and firewall rules permit the traffic. Peering does not automatically create internet gateways, provide application-layer threat detection, or register public DNS names. Engineers should remember that VPC Peering has architectural limitations, including the lack of general transitive routing through another peered network. Address-range planning is also important because incompatible or overlapping ranges can prevent successful peering.

Question 207

Which resource can provide a private endpoint for consuming a published service?

1. Cloud Router
2. Packet Mirroring collector
3. Private Service Connect endpoint
4. Cloud NAT configuration

Correct Answer: 3

Explanation:

A Private Service Connect endpoint provides a private connectivity mechanism that consumers can use to access supported published services. The consumer accesses the service through an endpoint associated with its own network rather than directly exposing the producer’s underlying infrastructure. Cloud Router manages dynamic routing, Packet Mirroring is used for traffic inspection and analysis, and Cloud NAT provides address translation. Private Service Connect can simplify service consumption across organizational or network boundaries while maintaining private connectivity. Engineers should verify the published service configuration, consumer permissions, DNS requirements, and relevant endpoint addressing when deploying this architecture.

Question 208

What does Cloud NAT primarily allow private VMs to do?

1. Receive unsolicited internet connections
2. Access external destinations without individual external IPs
3. Advertise BGP routes to peers
4. Host authoritative DNS zones

Correct Answer: 2

Explanation:

Cloud NAT allows eligible resources without external IP addresses to establish outbound connections to external destinations using NAT. This provides internet egress without requiring every VM to have its own public address. Cloud NAT does not make private VMs directly reachable for unsolicited inbound internet connections. BGP route advertisement belongs to Cloud Router, while authoritative DNS hosting is provided by Cloud DNS. Engineers should consider NAT IP capacity, port allocation, logging, routing, and firewall behavior when designing outbound connectivity for private workloads.

Question 209

Which Network Intelligence Center capability visualizes relationships among network resources?

1. Network Topology
2. Cloud Armor
3. Cloud NAT
4. Cloud DNS

Correct Answer: 1

Explanation:

Network Topology in Network Intelligence Center provides a visual representation of relationships and connectivity between relevant network resources. It can help engineers understand how VPC networks, instances, load balancers, and other supported resources relate to one another. Cloud Armor focuses on application protection, Cloud NAT handles outbound translation, and Cloud DNS manages name resolution. Topology visualization is especially useful during architecture reviews and troubleshooting because it provides a broader view than examining individual resources independently. Engineers can use it alongside Connectivity Tests and flow information for deeper network analysis.

Question 210

Why are redundant hybrid connectivity paths commonly designed?

1. To eliminate all routing protocols
2. To improve availability during path failures
3. To force every packet through one tunnel
4. To remove the need for subnet planning

Correct Answer: 2

Explanation:

Redundant hybrid connectivity paths improve availability by providing alternative paths when a connection, tunnel, device, or related component becomes unavailable. Organizations may implement redundant Interconnect connections, VPN tunnels, or diverse connectivity arrangements depending on their requirements. Redundancy does not eliminate routing protocols, force all packets through one path, or remove the need for IP planning. Engineers should consider both physical and logical diversity when designing resilient connectivity. Dynamic routing can help direct traffic toward an available path, while appropriate monitoring helps identify failures and verify that failover operates as expected.

Question 211

What is the purpose of a VPC firewall rule priority?

1. Determine which applicable rule is evaluated first
2. Assign DNS server addresses
3. Select a Cloud NAT region
4. Allocate subnet CIDR blocks

Correct Answer: 1

Explanation:

Firewall rule priority determines the order in which applicable firewall rules are evaluated. When multiple rules could apply to traffic, priority helps determine which rule takes precedence according to the firewall evaluation model. DNS server addressing, Cloud NAT regional configuration, and subnet CIDR allocation are separate networking concerns. Engineers should review rule direction, targets, sources, protocols, ports, and priority when investigating unexpected firewall behavior. A rule with the intended action may still have no effect if another applicable rule with higher precedence determines the result.

Question 212

Which address type is intended for communication inside a VPC network?

1. Public external address
2. Internal IP address
3. Internet-routable NAT address
4. Global DNS hostname

Correct Answer: 2

Explanation:

An internal IP address is used for private communication within a VPC network and supported connected environments. Internal addressing is fundamental to Google Cloud network design because many workloads can communicate without requiring publicly routable addresses. External addresses serve public connectivity purposes, NAT addresses support translated egress, and DNS hostnames provide naming rather than addressing by themselves. Engineers should plan internal address ranges carefully so that applications, load balancers, hybrid connections, and future workloads have sufficient non-overlapping space.

Question 213

Which feature can restrict which VPC networks are visible to a private DNS zone?

1. DNS zone visibility configuration
2. Cloud NAT port mapping
3. BGP community tagging
4. Load-balancer health checks

Correct Answer: 1

Explanation:

Private Cloud DNS zones can be configured with visibility controls that determine which VPC networks can use the zone for private name resolution. This allows organizations to limit DNS records to networks that actually require them and supports segmentation between different environments. NAT port mappings, BGP attributes, and load-balancer health checks do not control private DNS zone visibility. Engineers should carefully associate the intended networks with each private zone, particularly in environments containing development, testing, production, and shared-services networks.

Question 214

What does Cloud Interconnect provide compared with an internet-based VPN path?

1. Managed DNS recursion
2. Dedicated or partner connectivity into Google Cloud
3. Automatic application-layer encryption for every packet
4. Public IP allocation for all VMs

Correct Answer: 2

Explanation:

Cloud Interconnect provides connectivity between external networks and Google Cloud through Dedicated or Partner Interconnect architectures rather than relying solely on an internet-based VPN path. This can provide predictable network connectivity and is commonly used for enterprise hybrid environments with significant connectivity requirements. Interconnect does not automatically provide application-layer encryption for every packet, and it does not assign public IP addresses to every VM. DNS recursion is also unrelated. Engineers should evaluate capacity, redundancy, routing, location, provider requirements, and security needs when choosing an Interconnect architecture.

Question 215

What can a VPC Flow Logs sampling setting influence?

1. The proportion of observed traffic records
2. The subnet’s primary CIDR size
3. The number of BGP peers
4. The load balancer’s frontend protocol

Correct Answer: 1

Explanation:

VPC Flow Logs sampling controls how much traffic information is sampled for logging. Sampling can affect the volume of generated flow records and therefore the amount of data available for network visibility and analysis. It does not change subnet CIDR capacity, BGP peer counts, or load-balancer frontend protocols. Engineers should balance observability requirements against logging volume when configuring flow logging. For detailed troubleshooting or security analysis, understanding the configured sampling behavior is important because sampled logs represent observed traffic rather than necessarily providing a record of every packet transmitted.

Question 216

Which connectivity option is designed specifically for private access to Google APIs from eligible resources?

1. Public DNS delegation
2. Private Google Access
3. Cloud Armor Adaptive Protection
4. Cloud CDN

Correct Answer: 2

Explanation:

Private Google Access enables eligible resources without external IP addresses to access supported Google APIs and services through Google’s private network path. It is configured at the subnet level and is particularly useful for workloads that should remain privately addressed while still requiring access to Google-managed services. Public DNS delegation, Cloud Armor Adaptive Protection, and Cloud CDN address different requirements. Engineers should verify that the workload is located in a properly configured subnet and that DNS and routing behavior support the intended Google service access.

Question 217

Which resource represents the producer side of a Private Service Connect published service?

1. Service attachment
2. Forwarding rule for a public website
3. Cloud Router interface
4. DNSSEC key

Correct Answer: 1

Explanation:

A Private Service Connect service attachment represents the producer-side configuration for publishing a supported service to consumers. It defines how consumers can connect to the published service and can include controls governing which consumers are permitted to connect. The consumer side can use a Private Service Connect endpoint or another supported connection mechanism. A public website forwarding rule, Cloud Router interface, and DNSSEC key perform unrelated functions. Engineers publishing services should carefully configure consumer acceptance, backend connectivity, and DNS behavior so that authorized consumers can reach the service privately.

Question 218

What is a major benefit of using custom subnet ranges?

1. They automatically create global routes
2. They provide direct control over address allocation
3. They disable firewall enforcement
4. They eliminate all private DNS configuration

Correct Answer: 2

Explanation:

Custom subnet ranges provide administrators with direct control over how IP address space is allocated across regions and workloads. This supports structured network segmentation, predictable growth, hybrid connectivity planning, and organizational IP standards. Custom ranges do not automatically create global routes, disable firewall enforcement, or eliminate DNS configuration. Engineers should reserve sufficient space for future expansion and ensure that selected ranges do not overlap with networks that will need connectivity. Thoughtful subnet planning becomes increasingly important as organizations add projects, regions, services, and hybrid environments.

Question 219

Which service can help protect supported applications from unwanted web traffic?

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

Correct Answer: 3

Explanation:

Cloud Armor provides security controls that can help protect supported applications from unwanted or abusive web traffic. Depending on the configuration, security policies can enforce rules based on characteristics of incoming requests and can support capabilities such as filtering and rate-based controls. Cloud Router handles dynamic routing, Cloud NAT provides outbound translation, and Cloud DNS provides name-resolution services. Engineers should design Cloud Armor policies according to application requirements and carefully validate rules to avoid blocking legitimate traffic. Application protection should also be considered alongside identity, application security, and network-level controls.

Question 220

What should be considered before connecting two networks through private routing?

1. Whether their IP ranges overlap
2. Whether their DNS names use identical TTL values
3. Whether both use the same VM image
4. Whether their disks have matching sizes

Correct Answer: 1

Explanation:

IP range compatibility is a fundamental consideration before establishing private routing between networks. Overlapping address ranges can make destination selection ambiguous and prevent reliable communication between connected environments. This concern applies to architectures such as VPC Peering and hybrid connectivity. DNS TTL values, VM images, and disk sizes do not determine whether network address spaces are compatible. Engineers should document existing CIDR allocations before creating new connectivity relationships and reserve sufficient non-overlapping space for future expansion. Proper IP planning early in the design process can prevent difficult migration and renumbering work later.