View Full Amazon AWS Certified Advanced Networking – Specialty ANS-C01 Exam Dumps and Practice Test Dumps

 

Question 201. Which AWS feature allows multiple Transit Gateway attachments to use different routing policies for network segmentation?

1. Transit Gateway route tables
2. VPC security groups
3. Route 53 hosted zones
4. CloudFront cache policies

Correct Answer: 1. Transit Gateway route tables

Explanation:

Transit Gateway route tables provide centralized control over how traffic is routed between Transit Gateway attachments. Different attachments can be associated with different route tables, allowing an organization to create separate routing domains for workload VPCs, shared services, inspection networks, and external connectivity. Route propagation can also be selectively configured so that only appropriate prefixes become available within a particular routing domain. This capability is useful for implementing network segmentation without deploying separate physical routers for every environment. Security groups provide resource-level traffic filtering, but they do not replace Transit Gateway routing decisions. Proper route-table associations and propagation settings are therefore essential when designing segmented Transit Gateway architectures.

Question 202. Which AWS Direct Connect capability can provide encryption at the physical connection layer for supported Direct Connect connections?

1. AWS Shield
2. MACsec
3. AWS WAF
4. Route 53 Resolver

Correct Answer: 2. MACsec

Explanation:

MAC Security, commonly called MACsec, provides Layer 2 encryption for supported AWS Direct Connect connections. It can help protect data transmitted across the Direct Connect physical connection by encrypting Ethernet frames between compatible endpoints. MACsec is different from IPsec because it operates at a lower network layer and protects the link itself rather than creating an IP-layer VPN tunnel. Organizations considering MACsec must verify that their Direct Connect connection and network devices meet the required compatibility and configuration conditions. It can be useful for workloads with stronger link-level encryption requirements while still allowing the organization to use dedicated Direct Connect connectivity for predictable hybrid network performance.

Question 203. Which Direct Connect component provides a logical interface for connecting a customer network to a VPC using private IP addressing?

1. Private virtual interface
2. Public virtual interface
3. Internet Gateway
4. NAT Gateway

Correct Answer: 1. Private virtual interface

Explanation:

A private virtual interface, or private VIF, provides private connectivity between an on-premises network and AWS resources through Direct Connect. It uses BGP to exchange routing information and is associated with private connectivity architectures such as a virtual private gateway or supported Direct Connect gateway configurations. Because the communication uses private addressing, the connection does not require traffic to traverse the public internet. A public VIF serves a different purpose by providing access to AWS public services. NAT Gateway and Internet Gateway are VPC networking components and do not provide the Direct Connect virtual interface itself. Correct VIF selection is therefore important when implementing hybrid connectivity.

Question 204. An organization wants to use Direct Connect to connect several VPCs across different AWS accounts while keeping the network architecture centralized. Which service can help provide this centralized connectivity?

1. Direct Connect gateway
2. NAT Gateway
3. Internet Gateway
4. CloudFront

Correct Answer: 1. Direct Connect gateway

Explanation:

A Direct Connect gateway can provide a centralized way to connect a Direct Connect connection with supported AWS networking resources across accounts and Regions. It can be associated with virtual private gateways and can also support Transit Gateway architectures through appropriate Direct Connect configurations. This helps organizations avoid creating a separate Direct Connect connection for every VPC or account. Centralized connectivity is particularly valuable in enterprise environments where multiple business units or accounts require access to shared on-premises resources. Routing and association policies still need to be carefully designed because the Direct Connect gateway itself does not automatically make every connected network reachable without the appropriate configuration.

Question 205. Which AWS service can provide accelerated access to applications by using the AWS global network and static anycast IP addresses?

1. AWS Global Accelerator
2. AWS Site-to-Site VPN
3. AWS Network Firewall
4. AWS Transit Gateway

Correct Answer: 1. AWS Global Accelerator

Explanation:

AWS Global Accelerator provides static anycast IP addresses that serve as fixed entry points for applications running on supported AWS resources. Client traffic enters the AWS network through an appropriate edge location and is then routed over the AWS global network toward healthy application endpoints. This can help improve application availability and performance for globally distributed users. Global Accelerator is different from CloudFront because CloudFront is primarily a content delivery and caching service, while Global Accelerator focuses on accelerating network traffic to application endpoints. Global Accelerator can also use health checks to detect endpoint health and direct traffic away from unhealthy endpoints according to its configured architecture.

Question 206. Which Global Accelerator feature helps maintain a user’s traffic on the same endpoint when client affinity is enabled?

1. Client affinity
2. Weighted DNS
3. Private DNS
4. BGP local preference

Correct Answer: 1. Client affinity

Explanation:

Global Accelerator client affinity can help ensure that traffic from a particular client is consistently directed to the same endpoint when the feature is enabled and the endpoint remains available. This can be useful for applications that maintain session state locally and therefore benefit from traffic persistence. Without appropriate persistence, subsequent connections may be distributed among available endpoints according to the accelerator’s traffic-routing behavior. Client affinity should not be confused with DNS-based session persistence because Global Accelerator operates through static anycast IP addresses rather than requiring clients to resolve different application endpoints for each request. The feature should be used when application architecture benefits from consistent endpoint selection.

Question 207. Which IPv6 VPC component allows instances in private subnets to initiate outbound internet connections without accepting unsolicited inbound connections?

1. Internet Gateway
2. Egress-only Internet Gateway
3. NAT Gateway
4. VPC peering connection

Correct Answer: 2. Egress-only Internet Gateway

Explanation:

An egress-only Internet Gateway is designed specifically for outbound IPv6 traffic from resources that should not accept unsolicited inbound connections from the internet. IPv6 addresses are globally routable, so traditional IPv4 NAT behavior is not required simply to provide outbound connectivity. Instead, an egress-only Internet Gateway can be used with appropriate route-table configuration to allow resources to initiate outbound connections while preventing externally initiated inbound connections through that gateway. Security groups and network ACLs can provide additional controls. NAT Gateway is primarily used for IPv4 private subnet egress, making the egress-only Internet Gateway the appropriate component for this particular IPv6 requirement.

Question 208. Which VPC feature allows a subnet to route IPv4 internet-bound traffic through a NAT device while keeping instances without public IP addresses?

1. NAT Gateway
2. Internet Gateway directly attached to the instance
3. Public VIF
4. Transit Gateway Connect

Correct Answer: 1. NAT Gateway

Explanation:

A NAT Gateway allows instances in a private subnet to initiate outbound IPv4 connections to destinations such as the internet without assigning public IPv4 addresses directly to those instances. The private subnet’s route table typically sends internet-bound traffic to the NAT Gateway, while the NAT Gateway resides in a public subnet with a route toward an Internet Gateway. This architecture keeps the workload instances private while still allowing required outbound connectivity. NAT Gateway is not a replacement for the Internet Gateway because the NAT Gateway itself requires appropriate public connectivity. For higher availability, organizations commonly deploy NAT Gateways in multiple Availability Zones and route each private subnet to the appropriate local NAT Gateway.

Question 209. Which architecture provides higher availability for NAT-based internet egress from workloads deployed across multiple Availability Zones?

1. One NAT Gateway shared across all Availability Zones
2. A NAT Gateway in each required Availability Zone
3. One Internet Gateway per EC2 instance
4. One public VIF per subnet

Correct Answer: 2. A NAT Gateway in each required Availability Zone

Explanation:

Deploying a NAT Gateway in each required Availability Zone can improve resilience because private workloads in one Availability Zone do not depend on a NAT Gateway located in another Availability Zone. Route tables can be configured so that private subnets send outbound traffic to the NAT Gateway in the same Availability Zone. If a single centralized NAT Gateway is used, an Availability Zone failure or connectivity issue affecting that NAT Gateway can impact outbound connectivity for workloads in other Availability Zones. Multiple NAT Gateways can increase cost, but the architecture provides better failure isolation and can also reduce unnecessary cross-Availability-Zone traffic for high-volume workloads.

Question 210. Which AWS service can inspect and filter network traffic using stateful and stateless firewall rules within a VPC architecture?

1. AWS Network Firewall
2. Amazon Route 53
3. AWS Global Accelerator
4. AWS Certificate Manager

Correct Answer: 1. AWS Network Firewall

Explanation:

AWS Network Firewall is a managed network firewall service designed to inspect and control network traffic within VPC architectures. It supports both stateless and stateful rule groups, allowing organizations to implement different types of traffic filtering and inspection policies. Stateless rules can provide rapid initial filtering, while stateful rules can evaluate traffic in the context of established connections and more detailed conditions. Network Firewall can be deployed in dedicated firewall subnets and incorporated into centralized inspection architectures using Transit Gateway or other routing designs. It is different from AWS WAF, which focuses on HTTP and HTTPS application-layer requests rather than general network traffic.

Question 211. Which AWS Network Firewall rule type is evaluated without maintaining connection state?

1. Stateful rule group
2. Stateless rule group
3. Security group rule
4. DNS forwarding rule

Correct Answer: 2. Stateless rule group

Explanation:

A stateless rule group evaluates packets individually without maintaining information about the state of a connection. AWS Network Firewall stateless rules can be useful for basic packet filtering and fast traffic decisions based on characteristics such as source and destination addresses, ports, and protocols. Stateful rule groups, in contrast, can evaluate traffic while considering connection state and can support more sophisticated inspection behavior. Understanding this distinction helps network administrators determine where particular firewall policies should be implemented. Stateless rules are commonly useful for broad first-stage filtering, while stateful inspection can provide deeper traffic analysis for connections that require contextual evaluation.

Question 212. Which AWS Network Firewall capability can be used to filter DNS requests based on domain names when the appropriate inspection configuration is used?

1. Domain list rules
2. BGP communities
3. VPC peering
4. Direct Connect LAG

Correct Answer: 1. Domain list rules

Explanation:

AWS Network Firewall supports stateful inspection capabilities that can be used to control DNS-related traffic according to configured domain lists and firewall policies. Domain list rules can help organizations define allowed or denied domains for DNS traffic that passes through the appropriate firewall inspection path. This can provide an additional layer of network control beyond traditional IP address and port filtering. Correct routing is important because DNS traffic must actually traverse the Network Firewall for the relevant inspection policy to apply. Domain-based filtering should also be designed carefully so that legitimate application dependencies are not unintentionally blocked. This capability can complement Route 53 Resolver DNS Firewall in broader DNS security architectures.

Question 213. Which DNS security service can help block queries for known malicious or unwanted domains from VPC workloads?

1. Route 53 Resolver DNS Firewall
2. AWS Global Accelerator
3. AWS Direct Connect
4. Transit Gateway Connect

Correct Answer: 1. Route 53 Resolver DNS Firewall

Explanation:

Route 53 Resolver DNS Firewall allows organizations to create domain-based rules that control DNS queries originating from VPC resources. It can be used to block or allow queries based on domain lists, helping reduce access to known malicious, unwanted, or otherwise restricted domains. Because it operates at the DNS resolution layer, it can provide centralized domain-level controls without requiring every workload to implement its own filtering mechanism. DNS Firewall is different from AWS Network Firewall, which provides broader network traffic inspection. Organizations can use the two services together when both DNS-level policy enforcement and network-level traffic inspection are required.

Question 214. Which AWS service provides a managed private connection between a VPC and an AWS service using elastic network interfaces in the VPC?

1. Interface VPC endpoint
2. Gateway VPC endpoint
3. Internet Gateway
4. NAT Gateway

Correct Answer: 1. Interface VPC endpoint

Explanation:

An interface VPC endpoint creates elastic network interfaces in selected subnets and provides private connectivity between resources in the VPC and supported AWS services or endpoint services. The endpoint network interfaces receive private IP addresses, allowing applications to communicate without requiring public internet access. Interface endpoints can also use private DNS so that standard service DNS names resolve to the endpoint’s private addresses when configured appropriately. Gateway endpoints are different because they provide private access to services such as Amazon S3 and DynamoDB through route-table entries rather than endpoint network interfaces. Understanding the distinction is important when choosing the correct endpoint architecture for a workload.

Question 215. Which VPC endpoint type is generally used for Amazon S3 and DynamoDB and does not require elastic network interfaces in each subnet?

1. Interface endpoint
2. Gateway endpoint
3. Transit Gateway endpoint
4. NAT endpoint

Correct Answer: 2. Gateway endpoint

Explanation:

Gateway VPC endpoints provide private connectivity to supported services such as Amazon S3 and DynamoDB using route-table configuration. Unlike interface endpoints, gateway endpoints do not create elastic network interfaces in the subnets for service connectivity. Instead, routes are added to selected route tables so traffic destined for the supported service is directed through the gateway endpoint. This can be particularly useful for private workloads that need to access S3 without using NAT Gateway or public internet connectivity. Endpoint policies can provide additional access control. Choosing a gateway endpoint where supported can also help avoid unnecessary NAT processing and associated data-processing costs for the supported service traffic.

Question 216. Which AWS service can provide private DNS resolution between an AWS VPC and an on-premises DNS environment?

1. Route 53 Resolver
2. Amazon CloudFront
3. AWS WAF
4. AWS Shield

Correct Answer: 1. Route 53 Resolver

Explanation:

Amazon Route 53 Resolver provides DNS resolution capabilities within AWS and supports hybrid DNS architectures through inbound and outbound endpoints. An inbound endpoint allows DNS queries from on-premises environments to be sent into AWS for resolution, while an outbound endpoint allows selected queries originating in AWS to be forwarded to on-premises DNS servers. Forwarding rules determine which domains should be sent to external resolvers. This architecture is useful when an organization has internal corporate domains alongside AWS private hosted zones and wants applications in both environments to resolve names appropriately. Route 53 Resolver therefore acts as an important component of hybrid DNS design.

Question 217. Which AWS networking technology provides a managed overlay for connecting VPCs, on-premises networks, and branches using a centralized global network structure?

1. AWS Cloud WAN
2. AWS WAF
3. Amazon CloudFront
4. AWS Certificate Manager

Correct Answer: 1. AWS Cloud WAN

Explanation:

AWS Cloud WAN provides a managed global networking service designed to help organizations build and centrally manage wide area networks connecting AWS environments, on-premises locations, branches, and other network segments. It can simplify the creation of a global network by providing centralized policies and segmentation concepts rather than requiring administrators to manually configure every individual connection. Cloud WAN is particularly useful for organizations operating across multiple Regions and geographic locations that need consistent network governance. It complements services such as Transit Gateway, VPN, and Direct Connect by providing a broader global network management framework for connecting and organizing distributed environments.

Question 218. Which AWS Cloud WAN concept can be used to isolate groups of network resources according to different connectivity and security requirements?

1. Network segments
2. Cache behaviors
3. Security group descriptions
4. Public VIFs

Correct Answer: 1. Network segments

Explanation:

AWS Cloud WAN network segments allow organizations to logically separate portions of a global network according to different connectivity and security requirements. For example, an organization might maintain separate segments for production, development, corporate services, and other environments. Connectivity between segments can be controlled through network policies, allowing administrators to define which segments are permitted to communicate. This provides a structured approach to global network segmentation and can reduce the complexity of managing large distributed environments. Network segments are part of Cloud WAN’s centralized network architecture and should be planned together with core network policies, attachments, and routing requirements.

Question 219. Which AWS networking feature can provide dedicated physical connectivity from a customer data center to an AWS Direct Connect location?

1. Dedicated Direct Connect connection
2. VPC peering
3. NAT Gateway
4. Interface endpoint

Correct Answer: 1. Dedicated Direct Connect connection

Explanation:

A dedicated Direct Connect connection provides a physical network connection between a customer network and AWS at a Direct Connect location. This type of connectivity can provide more predictable network performance and avoids relying solely on internet-based paths for hybrid traffic. Organizations can create virtual interfaces over the connection to access supported AWS resources and services. Dedicated connections can also be designed with redundant connections or locations to improve resiliency. This differs from a hosted connection, where a Direct Connect partner provides the underlying connectivity. Selecting between dedicated and hosted models depends on factors such as capacity requirements, operational responsibility, location availability, and organizational networking strategy.

Question 220. Which AWS service can provide a centralized network hub for connecting VPCs, VPNs, and supported Direct Connect architectures?

1. AWS Transit Gateway
2. Amazon Route 53
3. AWS WAF
4. Amazon CloudFront

Correct Answer: 1. AWS Transit Gateway

Explanation:

AWS Transit Gateway serves as a centralized network hub that can connect multiple VPCs and supported hybrid connectivity resources such as Site-to-Site VPN and Direct Connect architectures. It reduces the need to create numerous point-to-point connections and allows network administrators to manage routing through centralized Transit Gateway route tables. Organizations can also use separate route tables and propagation controls to implement segmentation and inspection architectures. Transit Gateway is therefore well suited to enterprise networks containing many VPCs, accounts, Regions, and on-premises environments. When combined with services such as Direct Connect gateway, VPN, and Network Firewall, it can form the foundation of a scalable hybrid AWS network.