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

 

Question 1. Which AWS service is designed to accelerate access to applications for global users by using the AWS global network?

1. Amazon Route 53
2. AWS Global Accelerator
3. AWS Site-to-Site VPN
4. AWS Direct Connect

Correct Answer: 2. AWS Global Accelerator

Explanation:

AWS Global Accelerator improves the availability and performance of applications for users around the world by using static anycast IP addresses and routing traffic through the AWS global network. Instead of relying entirely on internet routing, Global Accelerator directs client traffic to optimal AWS endpoints based on factors such as geographic location, application health, and network performance. It can work with resources such as Application Load Balancers, Network Load Balancers, and Amazon EC2 instances. Amazon Route 53 primarily provides DNS services, while Direct Connect provides dedicated connectivity between on-premises environments and AWS. Site-to-Site VPN creates encrypted connectivity over the internet rather than providing global application acceleration.

Question 2. Which AWS service provides a content delivery network for distributing content with low latency to users globally?

1. Amazon CloudFront
2. AWS Transit Gateway
3. AWS Network Firewall
4. AWS Direct Connect

Correct Answer: 1. Amazon CloudFront

Explanation:

Amazon CloudFront is AWS’s content delivery network service and is designed to deliver content to users with low latency by caching and serving content from edge locations. CloudFront can distribute static and dynamic content, APIs, applications, videos, and other resources. When a user requests content, CloudFront can serve cached content from a nearby edge location instead of requiring every request to travel to the origin. This can reduce latency and improve user experience. Transit Gateway connects VPCs and networks, Network Firewall provides network security controls, and Direct Connect provides dedicated network connectivity. CloudFront is therefore the appropriate service for global content distribution and edge delivery.

Question 3. A company needs a private, dedicated network connection between its on-premises data center and AWS. Which service should the company use?

1. Amazon CloudFront
2. AWS Client VPN
3. AWS Direct Connect
4. Amazon Route 53

Correct Answer: 3. AWS Direct Connect

Explanation:

AWS Direct Connect provides a dedicated network connection from an on-premises environment to AWS. It can provide more predictable network performance and avoid sending traffic across the public internet for the connection between the customer network and AWS. Direct Connect can be used with services such as virtual interfaces, Direct Connect gateways, and Transit Gateway depending on the architecture. AWS Site-to-Site VPN is another hybrid connectivity option, but it generally uses encrypted tunnels over internet connectivity. CloudFront is designed for content delivery, while Route 53 provides DNS services. Direct Connect is therefore appropriate when dedicated private connectivity is a key requirement.

Question 4. Which routing protocol is commonly used with AWS Direct Connect to exchange routes dynamically?

1. OSPF
2. EIGRP
3. RIP
4. BGP

Correct Answer: 4. BGP

Explanation:

Border Gateway Protocol, or BGP, is commonly used to exchange routing information dynamically over AWS Direct Connect connections. BGP allows the on-premises network and AWS to advertise and learn routes, helping maintain connectivity without requiring every route to be manually configured. BGP also provides mechanisms for route selection and can support resilient architectures with multiple connections. OSPF, EIGRP, and RIP are routing protocols used in other networking environments, but they are not the protocol used for exchanging routes over AWS Direct Connect virtual interfaces. Understanding BGP is particularly important for hybrid AWS networking because routing behavior directly affects traffic flow between AWS and on-premises networks.

Question 5. What is the primary purpose of an AWS Transit Gateway?

1. To provide DNS resolution for public domains
2. To connect multiple VPCs and networks through a central network hub
3. To cache objects at edge locations
4. To encrypt individual application files

Correct Answer: 2. To connect multiple VPCs and networks through a central network hub

Explanation:

AWS Transit Gateway provides a central network hub that can connect multiple VPCs and supported external networks. Instead of creating a large number of individual point-to-point connections between VPCs, organizations can connect VPCs to a Transit Gateway and use routing tables to control traffic between attached networks. Transit Gateway can also support connectivity with on-premises environments through services such as Direct Connect and Site-to-Site VPN. This hub-and-spoke architecture can simplify network management as the number of VPCs grows. CloudFront serves content, Route 53 provides DNS functionality, and encryption services protect data, but none of these services provides the same centralized network connectivity role.

Question 6. Which AWS feature allows private connectivity from a VPC to supported AWS services without requiring traffic to traverse the public internet?

1. VPC endpoints
2. Internet Gateway
3. NAT instance only
4. Public IP address

Correct Answer: 1. VPC endpoints

Explanation:

VPC endpoints allow resources in a VPC to communicate with supported AWS services without requiring the traffic to travel through an internet gateway or public internet path. Depending on the service and endpoint type, AWS provides different endpoint mechanisms, including interface endpoints and gateway endpoints. Interface endpoints use AWS PrivateLink and can provide private connectivity through elastic network interfaces in the VPC. Gateway endpoints are available for services such as Amazon S3 and DynamoDB. An internet gateway provides internet connectivity, while a public IP address exposes a resource through public addressing. VPC endpoints are therefore an important design option when private service access and reduced exposure are required.

Question 7. Which AWS service provides private access to services hosted by another AWS account without requiring VPC peering?

1. Amazon CloudFront
2. AWS Global Accelerator
3. AWS PrivateLink
4. Amazon Route 53 Resolver

Correct Answer: 3. AWS PrivateLink

Explanation:

AWS PrivateLink enables private connectivity to supported services without requiring direct network connectivity between the consumer VPC and the service provider VPC. This is particularly useful when an organization needs to expose an application or service privately to customers, partners, or other AWS accounts. The service provider can publish an endpoint service, while consumers create interface VPC endpoints to connect privately. This design limits the amount of network connectivity that must be established between environments and can simplify service-provider architectures. VPC peering connects entire VPC networks, while PrivateLink focuses on private access to specific services. CloudFront and Global Accelerator solve different traffic distribution and performance requirements.

Question 8. Which component controls inbound and outbound traffic at the subnet level in an Amazon VPC?

1. Security group
2. Network ACL
3. IAM policy
4. Route 53 hosted zone

Correct Answer: 2. Network ACL

Explanation:

A network access control list, or network ACL, operates at the subnet level and controls inbound and outbound traffic associated with the subnet. Network ACLs contain numbered rules that can allow or deny traffic based on characteristics such as protocol, port, and IP address. Unlike security groups, network ACLs are stateless, meaning that return traffic must be explicitly allowed by an appropriate rule. Security groups operate at the network interface level and are stateful. IAM policies control access to AWS resources through identities and permissions, while Route 53 hosted zones provide DNS information. Understanding the different enforcement levels and state behavior is essential for designing secure VPC architectures.

Question 9. What is a key characteristic of an Amazon VPC security group?

1. It is stateless and applies only at the subnet level
2. It controls DNS records for the VPC
3. It is stateful and controls traffic for associated network interfaces
4. It automatically advertises BGP routes

Correct Answer: 3. It is stateful and controls traffic for associated network interfaces

Explanation:

Amazon VPC security groups act as virtual firewalls for associated network interfaces and are stateful. When an inbound connection is allowed, the response traffic is automatically allowed because the security group tracks the state of the connection. Security groups primarily contain allow rules and do not use explicit deny rules in the same way that network ACLs do. They can be associated with resources such as EC2 instances through their network interfaces. Network ACLs operate at the subnet level and are stateless. Security groups do not manage DNS records or BGP routing. Correctly combining security groups with network ACLs can provide layered network access control.

Question 10. Which AWS service can provide managed DNS resolution between on-premises networks and VPCs?

1. AWS Direct Connect
2. Amazon CloudFront
3. AWS Network Firewall
4. Amazon Route 53 Resolver

Correct Answer: 4. Amazon Route 53 Resolver

Explanation:

Amazon Route 53 Resolver provides DNS resolution capabilities for VPC environments and can be configured to support hybrid DNS architectures. Resolver endpoints can enable DNS queries to flow between AWS and on-premises environments, allowing organizations to integrate existing DNS infrastructure with AWS-hosted resources. For example, inbound Resolver endpoints can allow on-premises DNS clients to query DNS information in AWS, while outbound endpoints can forward selected queries from AWS to on-premises DNS servers through forwarding rules. Direct Connect provides network connectivity but does not itself provide DNS resolution. CloudFront distributes content, and Network Firewall provides traffic inspection and filtering capabilities.

Question 11. Which AWS service can provide managed protection against distributed denial-of-service attacks?

1. AWS Shield
2. AWS Direct Connect
3. Amazon VPC Lattice
4. AWS Transit Gateway

Correct Answer: 1. AWS Shield

Explanation:

AWS Shield is a managed distributed denial-of-service protection service designed to help protect AWS applications against DDoS attacks. Shield Standard provides automatic protection against common network and transport layer attacks, while Shield Advanced provides additional capabilities for more sophisticated attacks and enhanced visibility and support. Shield can protect supported AWS resources such as Amazon CloudFront distributions, Route 53 resources, Elastic Load Balancing resources, and AWS Global Accelerator resources. Direct Connect is a connectivity service, Transit Gateway provides network connectivity between networks, and VPC Lattice supports service-to-service communication. Shield should be considered as part of a broader security architecture rather than as a replacement for all application security controls.

Question 12. Which AWS service can inspect and filter network traffic using managed firewall capabilities?

1. Amazon Route 53
2. AWS Network Firewall
3. AWS Direct Connect
4. Amazon CloudFront

Correct Answer: 2. AWS Network Firewall

Explanation:

AWS Network Firewall is a managed network firewall service that helps organizations inspect and control network traffic within their AWS environments. It can be used to implement traffic filtering and security policies for VPC architectures and can support use cases involving both inbound and outbound traffic flows. Network Firewall is designed for network-layer inspection and can be integrated into architectures where centralized traffic inspection is required. Route 53 provides DNS services, Direct Connect provides dedicated connectivity, and CloudFront provides content delivery. A network firewall can be combined with security groups, network ACLs, AWS WAF, logging, and other security mechanisms to create layered protection appropriate to the architecture.

Question 13. Which AWS feature can be used to analyze network connectivity between AWS resources and identify potential routing or security configuration problems?

1. AWS Reachability Analyzer
2. Amazon CloudFront
3. AWS Certificate Manager
4. Amazon S3

Correct Answer: 1. AWS Reachability Analyzer

Explanation:

AWS Reachability Analyzer is a configuration analysis tool that can help determine whether a network path exists between specified source and destination resources. It analyzes network configuration components such as route tables, security groups, and network ACLs to identify whether traffic can reach its intended destination. This makes it useful when troubleshooting connectivity problems caused by configuration issues. For example, if an application cannot connect to a specific endpoint, Reachability Analyzer can help identify where the expected path is blocked or incorrectly configured. CloudFront is used for content delivery, Certificate Manager manages certificates, and S3 provides object storage rather than network path analysis.

Question 14. What is the primary purpose of VPC Flow Logs?

1. To modify route tables automatically
2. To create DNS records
3. To capture information about network traffic to and from network interfaces
4. To provide dedicated physical connectivity

Correct Answer: 3. To capture information about network traffic to and from network interfaces

Explanation:

VPC Flow Logs capture information about network traffic flowing to and from network interfaces in a VPC. They can help organizations troubleshoot connectivity problems, investigate security events, understand traffic patterns, and support monitoring and compliance requirements. Flow logs contain metadata about traffic rather than the full contents of packets. Depending on the configuration, organizations can capture different fields and deliver logs to supported destinations for analysis and retention. Flow Logs do not automatically modify route tables or create DNS records, and they do not provide physical connectivity. They are primarily a visibility and analysis mechanism that can complement other monitoring and security services.

Question 15. A company wants to connect two VPCs privately using their private IP addresses. Which option can provide this connectivity without using a Transit Gateway?

1. VPC peering
2. Amazon CloudFront
3. AWS WAF
4. Amazon Route 53 public hosted zone

Correct Answer: 1. VPC peering

Explanation:

VPC peering creates a private network connection between two VPCs, allowing resources in the connected VPCs to communicate using private IP addresses. The VPCs can be in the same AWS Region or, where supported, in different Regions. Appropriate route table entries and security controls are still required for traffic to flow. VPC peering is useful for direct connectivity between VPCs, but it does not provide transitive routing through a chain of peered VPCs. For larger environments with many VPCs and centralized routing requirements, AWS Transit Gateway may be more suitable. CloudFront, WAF, and public DNS services do not provide the same private VPC-to-VPC connectivity.

Question 16. Which design is most appropriate when an organization needs centralized connectivity for a large number of VPCs?

1. A separate VPN tunnel between every pair of VPCs
2. AWS Transit Gateway with a hub-and-spoke architecture
3. A public IP address on every private subnet
4. Amazon CloudFront between all VPCs

Correct Answer: 2. AWS Transit Gateway with a hub-and-spoke architecture

Explanation:

A hub-and-spoke architecture using AWS Transit Gateway can simplify connectivity when an organization has many VPCs and networks. Each VPC can connect to the central Transit Gateway, and routing policies can determine which networks are allowed to communicate. This approach reduces the need to create and manage numerous individual point-to-point connections. Transit Gateway can also integrate with hybrid connectivity options such as Direct Connect and Site-to-Site VPN, making it useful for larger centralized network architectures. A full mesh of individual VPN connections can become difficult to operate as the number of networks increases. Public IP addressing and CloudFront do not provide the required private centralized routing model.

Question 17. Which AWS service is commonly used to provide DNS-based traffic routing between multiple application endpoints?

1. AWS Network Firewall
2. AWS Direct Connect
3. Amazon Route 53
4. AWS Transit Gateway

Correct Answer: 3. Amazon Route 53

Explanation:

Amazon Route 53 is a highly available and scalable DNS service that can route users to application endpoints based on different routing policies. These policies include simple, weighted, latency-based, failover, geolocation, and other options. Route 53 can also use health checks with appropriate routing configurations to direct traffic away from unhealthy endpoints. This makes it useful for architectures requiring global traffic distribution, failover, or controlled routing between multiple resources. Direct Connect provides dedicated network connectivity, Transit Gateway provides network routing between connected networks, and Network Firewall provides traffic inspection and filtering. Route 53 therefore plays a key role in DNS-based traffic management.

Question 18. Which AWS connectivity option uses encrypted tunnels over the internet to connect an on-premises network to a VPC?

1. AWS Direct Connect
2. AWS Site-to-Site VPN
3. Amazon CloudFront
4. AWS PrivateLink

Correct Answer: 2. AWS Site-to-Site VPN

Explanation:

AWS Site-to-Site VPN creates encrypted tunnels between an on-premises network and an AWS VPC, normally using internet connectivity. It is commonly used when organizations need encrypted hybrid connectivity without establishing a dedicated physical connection. Site-to-Site VPN can use dynamic routing with BGP or static routing depending on the configuration and architecture. Direct Connect provides dedicated connectivity but does not inherently provide the same type of encrypted VPN tunnel. PrivateLink provides private access to specific services rather than general network connectivity between an on-premises network and a VPC. CloudFront is a content delivery service. VPN therefore provides an important option for secure hybrid networking.

Question 19. Which AWS networking feature allows a VPC to support outbound IPv6 internet connectivity while preventing unsolicited inbound internet connections?

1. Internet Gateway
2. NAT Gateway
3. Egress-only Internet Gateway
4. Transit Gateway

Correct Answer: 3. Egress-only Internet Gateway

Explanation:

An egress-only internet gateway is designed for IPv6 traffic and allows resources in a VPC to initiate outbound communication to the internet while preventing unsolicited inbound connections from the internet. This provides a useful security mechanism for IPv6 architectures because IPv6 addresses are globally routable and do not rely on NAT in the same way as many IPv4 designs. An internet gateway supports general internet connectivity, while a NAT gateway provides outbound IPv4 connectivity for private resources using translated addresses. Transit Gateway provides connectivity between networks. When designing IPv6 architectures, an egress-only internet gateway can therefore help enforce an outbound-only internet access pattern.

Question 20. Which combination is most appropriate for protecting a public web application from common application-layer attacks while also distributing content globally?

1. AWS Direct Connect and Transit Gateway
2. Amazon Route 53 and AWS Site-to-Site VPN only
3. Amazon CloudFront and AWS WAF
4. VPC peering and AWS Direct Connect

Correct Answer: 3. Amazon CloudFront and AWS WAF

Explanation:

Amazon CloudFront and AWS WAF can work together to provide global content delivery and application-layer protection. CloudFront distributes content and application requests through AWS edge locations, helping reduce latency for users around the world. AWS WAF can inspect web requests and apply rules designed to block or allow traffic based on characteristics such as IP addresses, headers, request patterns, and other conditions. This combination is useful for public web applications that need both performance and protection against common web-based attacks. Direct Connect, Transit Gateway, VPN, and VPC peering address network connectivity requirements but do not provide the same combination of global content delivery and web application filtering.