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Amazon
ANS-C01 Exam
Amazon AWS Certified Advanced
Networking - Specialty
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A company is planning to create a service that requires encryption in transit. The traffic must not be
decrypted between the client and the backend of the service. The company will implement the
service by using the gRPC protocol over TCP port 443. The service will scale up to thousands of
simultaneous connections. The backend of the service will be hosted on an Amazon Elastic
Kubernetes Service (Amazon EKS) duster with the Kubernetes Cluster Autoscaler and the Horizontal
Pod Autoscaler configured. The company needs to use mutual TLS for two-way authentication
between the client and the backend.
Which solution will meet these requirements?
A. Install the AWS Load Balancer Controller for Kubernetes. Using that controller, configure a
Network Load Balancer with a TCP listener on port 443 to forward traffic to the IP addresses of the
backend service Pods.
B. Install the AWS Load Balancer Controller for Kubernetes. Using that controller, configure an
Application Load Balancer with an HTTPS listener on port 443 to forward traffic to the IP addresses of
the backend service Pods.
C. Create a target group. Add the EKS managed node group's Auto Scaling group as a target Create an
Page 2
Version: 8.0
Question: 1
www.certifiedumps.com

Explanation:
https://docs.aws.amazon.com/elasticloadbalancing/latest/application/load-balancer-target-
groups.html#target-group-protocol-version https://docs.aws.amazon.com/prescriptive-
guidance/latest/patterns/deploy-a-grpc-based-application-on-an-amazon-eks-cluster-and-access-it-
with-an-application-load-balancer.html
A company is deploying a new application in the AWS Cloud. The company wants a highly available
web server that will sit behind an Elastic Load Balancer. The load balancer will route requests to
multiple target groups based on the URL in the request. All traffic must use HTTPS. TLS processing
must be offloaded to the load balancer. The web server must know the user’s IP address so that the
company can keep accurate logs for security purposes.
Questions & Answers PDF Page 3
Application Load Balancer with an HTTPS listener on port 443 to forward traffic to the target group.
D. Create a target group. Add the EKS managed node group’s Auto Scaling group as a target. Create a
Network Load Balancer with a TLS listener on port 443 to forward traffic to the target group.
Question: 2
Answer: B

Explanation:
An Application Load Balancer (ALB) can be used to route traffic to multiple target groups based on
the URL in the request. The ALB can be configured with an HTTPS listener to ensure all traffic uses
HTTPS. TLS processing can be offloaded to the ALB, which reduces the load on the web server. Path-
based routing rules can be used to route traffic to the correct target group based on the URL in the
request. The X-Forwarded-For request header can be included with traffic to the targets, which will
allow the web server to know the user's IP address and keep accurate logs for security purposes.
A. Deploy an Application Load Balancer with an HTTPS listener. Use path-based routing rules to
forward the traffic to the correct target group. Include the X-Forwarded-For request header with
traffic to the targets.
B. Deploy an Application Load Balancer with an HTTPS listener for each domain. Use host-based
routing rules to forward the traffic to the correct target group for each domain. Include the X-
Forwarded-For request header with traffic to the targets.
C. Deploy a Network Load Balancer with a TLS listener. Use path-based routing rules to forward the
traffic to the correct target group. Configure client IP address preservation for traffic to the targets.
D. Deploy a Network Load Balancer with a TLS listener for each domain. Use host-based routing rules
to forward the traffic to the correct target group for each domain. Configure client IP address
preservation for traffic to the targets.
Page 4
Question: 3
Answer: A

A. Configure the ALB in a private subnet of the VPC. Attach an internet gateway without
adding routes in the subnet route tables to point to the internet gateway. Configure the
accelerator with endpoint groups that include the ALB endpoint. Configure the ALB’s
security group to only allow inbound traffic from the internet on the ALB listener port.
B. Configure the ALB in a private subnet of the VPC. Configure the accelerator with
endpoint groups
that include the ALB endpoint. Configure the ALB's security group to only allow inbound
traffic from
the internet on the ALB listener port. C. Configure the ALB in a public subnet of the VPAttach
an internet gateway. Add routes in the subnet
route tables to point to the internet gateway. Configure the accelerator with endpoint
groups that
include the ALB endpoint. Configure the ALB's security group to only allow inbound traffic
from the
accelerator's IP addresses on the ALB listener port.
D. Configure the ALB in a private subnet of the VPC. Attach an internet gateway. Add routes
in the
subnet route tables to point to the internet gateway. Configure the accelerator with
endpoint groups
that include the ALB endpoint. Configure the ALB's security group to only allow inbound
A company has developed an application on AWS that will track inventory levels of vending machines
and initiate the restocking process automatically. The company plans to integrate this application
with vending machines and deploy the vending machines in several markets around the world. The
application resides in a VPC in the us-east-1 Region. The application consists of an Amazon Elastic
Container Service (Amazon ECS) cluster behind an Application Load Balancer (ALB). The
communication from the vending machines to the application happens over HTTPS.
The company is planning to use an AWS Global Accelerator accelerator and configure static IP
addresses of the accelerator in the vending machines for application endpoint access. The
application must be accessible only through the accelerator and not through a direct connection over
the internet to the ALB endpoint.
Page 5

Explanation:
A global delivery company is modernizing its fleet management system. The company has
several business units. Each business unit designs and maintains applications that are
hosted in its own AWS account in separate application VPCs in the same AWS Region. Each
business unit's applications are designed to get data from a central shared services VPC.
The company wants the network connectivity architecture to provide granular security
controls. The
architecture also must be able to scale as more business units consume data from the
central shared
services VPC in the future. Which solution will meet these requirements in the MOST secure
manner?
Please read the below link typically describing ELB integration with AWS Global accelator (and the
last line of the extract) - https://docs.aws.amazon.com/global-accelerator/latest/dg/secure-vpc-
connections.html "When you add an internal Application Load Balancer or an Amazon EC2 instance
endpoint in AWS Global Accelerator, you enable internet traffic to flow directly to and from the
endpoint in Virtual Private Clouds (VPCs) by targeting it in a private subnet. The VPC that contains
the load balancer or EC2 instance must have an internet gateway attached to it, to indicate that the
VPC accepts internet traffic. However, you don't need public IP addresses on the load balancer or EC2
instance. You also don't need an associated internet gateway route for the subnet."
Page 6
Question: 4
Answer: A

Explanation:
Option C provides a secure and scalable solution using VPC endpoint services powered by AWS
PrivateLink. AWS PrivateLink enables private connectivity between VPCs and services without
exposing the data to the public internet or using a VPN connection. By creating VPC endpoints in
each application VPC, the company can securely access the central shared services VPC without the
need for complex network configurations. Furthermore, PrivateLink supports cross-account
connectivity, which makes it a scalable solution as more business units consume data from the
central shared services VPC in the future.
A. Create a central transit gateway. Create a VPC attachment to each application VPC. Provide full
mesh connectivity between all the VPCs by using the transit gateway.
B. Create VPC peering connections between the central shared services VPC and each application
VPC in each business unit's AWS account.
C. Create VPC endpoint services powered by AWS PrivateLink in the central shared services VPCreate
VPC endpoints in each application VPC.
D. Create a central transit VPC with a VPN appliance from AWS Marketplace. Create a VPN
attachment from each VPC to the transit VPC. Provide full mesh connectivity among all the VPCs.
Page 7
Question: 5
Answer: C

A. Review the Amazon CloudWatch metrics for VirtualInterfaceBpsEgress and
VirtualInterfaceBpsIngress to determine which VIF is sending the highest throughput during the
period in which slowness is observed. Create a new 10 Gbps dedicated connection. Shift traffic from
the existing dedicated connection to the new dedicated connection.
B. Review the Amazon CloudWatch metrics for VirtualInterfaceBpsEgress and
VirtualInterfaceBpsIngress to determine which VIF is sending the highest throughput during the
period in which slowness is observed. Upgrade the bandwidth of the existing dedicated connection
to 10 Gbps.
C. Review the Amazon CloudWatch metrics for ConnectionBpsIngress and ConnectionPpsEgress to
determine which VIF is sending the highest throughput during the period in which slowness is
observed. Upgrade the existing dedicated connection to a 5 Gbps hosted connection.
D. Review the Amazon CloudWatch metrics for ConnectionBpsIngress and ConnectionPpsEgress to
determine which VIF is sending the highest throughput during the period in which slowness is
observed. Create a new 10 Gbps dedicated connection. Shift traffic from the existing dedicated
connection to the new dedicated connection.
A company uses a 4 Gbps AWS Direct Connect dedicated connection with a link aggregation group
(LAG) bundle to connect to five VPCs that are deployed in the us-east-1 Region. Each VPC serves a
different business unit and uses its own private VIF for connectivity to the on-premises environment.
Users are reporting slowness when they access resources that are hosted on AWS.
A network engineer finds that there are sudden increases in throughput and that the Direct Connect
connection becomes saturated at the same time for about an hour each business day. The company
wants to know which business unit is causing the sudden increase in throughput. The network
engineer must find out this information and implement a solution to resolve the problem.
Page 8

Explanation:
A. Deploy the SaaS service endpoint behind a Network Load Balancer.
B. Configure an endpoint service, and grant the customers permission to create a connection to the
endpoint service.
C. Deploy the SaaS service endpoint behind an Application Load Balancer.
D. Configure a VPC peering connection to the customer VPCs. Route traffic through NAT gateways.
A software-as-a-service (SaaS) provider hosts its solution on Amazon EC2 instances within a VPC in
the AWS Cloud. All of the provider's customers also have their environments in the AWS Cloud.
A recent design meeting revealed that the customers have IP address overlap with the provider's
AWS deployment. The customers have stated that they will not share their internal IP addresses and
that they do not want to connect to the provider's SaaS service over the internet.
Which combination of steps is part of a solution that meets these requirements? (Choose two.)
To meet the requirements of finding out which business unit is causing the sudden increase in
throughput and resolving the problem, the network engineer should review the Amazon CloudWatch
metrics for VirtualInterfaceBpsEgress and VirtualInterfaceBpsIngress to determine which VIF is
sending the highest throughput during the period in which slowness is observed (Option B). After
identifying the VIF that is causing the issue, they can upgrade the bandwidth of the existing
dedicated connection to 10 Gbps to resolve the problem (Option B).
Page 9
Question: 6
Answer: A

Explanation:
NLB for creating the private link which solves the overlapping IP address issue and the SaaS service
endpoint behind it. (the SaaS endpoint could be an ALB) https://aws.amazon.com/about-aws/whats-
new/2021/09/application-load-balancer-aws-privatelink-static-ip-addresses-network-load-balancer/
A network engineer is designing the architecture for a healthcare company's workload that is moving
to the AWS Cloud. All data to and from the on-premises environment must be encrypted in transit.
All traffic also must be inspected in the cloud before the traffic is allowed to leave the cloud and
travel to the on-premises environment or to the internet.
The company will expose components of the workload to the internet so that patients can reserve
appointments. The architecture must secure these components and protect them against DDoS
attacks. The architecture also must provide protection against financial liability for services that scale
out during a DDoS event.
Which combination of steps should the network engineer take to meet all these requirements for the
workload? (Choose three.)
E. Deploy an AWS Transit Gateway, and connect the SaaS VPC to it. Share the transit gateway with the
customers. Configure routing on the transit gateway.
Page 10
Question: 7
Answer: AB

Explanation:
A. Use Traffic Mirroring to copy all traffic to a fleet of traffic capture appliances.
B. Set up AWS WAF on all network components.
C. Configure an AWS Lambda function to create Deny rules in security groups to block malicious IP
addresses.
D. Use AWS Direct Connect with MACsec support for connectivity to the cloud.
E. Use Gateway Load Balancers to insert third-party firewalls for inline traffic inspection.
F. Configure AWS Shield Advanced and ensure that it is configured on all public assets.
To meet the requirements for the healthcare company’s workload that is moving to the AWS Cloud,
the network engineer should take the following steps:
Use AWS Direct Connect with MACsec support for connectivity to the cloud to ensure that all data to
and from the on-premises environment is encrypted in transit (Option D).
Use Gateway Load Balancers to insert third-party firewalls for inline traffic inspection to inspect all
traffic in the cloud before it is allowed to leave (Option E).
Configure AWS Shield Advanced and ensure that it is configured on all public assets to secure
components exposed to the internet against DDoS attacks and provide protection against financial
liability for services that scale out during a DDoS event (Option F).
These steps will help ensure that all data is encrypted in transit, all traffic is inspected before leaving
the cloud, and components exposed to the internet are secured against DDoS attacks.
Page 11
Answer: DEF

A. Enable VPC flow logs on the NAT gateway's elastic network interface. Publish the logs to
a log group in Amazon CloudWatch Logs. Use CloudWatch Logs Insights to query and
analyze the logs.
B. Enable NAT gateway access logs. Publish the logs to a log group in Amazon CloudWatch
Logs. Use
CloudWatch Logs Insights to query and analyze the logs.
C. Configure Traffic Mirroring on the NAT gateway's elastic network interface. Send the
traffic to an
additional EC2 instance. Use tools such as tcpdump and Wireshark to query and analyze the
mirrored
traffic. D. Enable VPC flow logs on the NAT gateway's elastic network interface. Publish the
logs to an
Amazon S3 bucket. Create a custom table for the S3 bucket in Amazon Athena to describe
the log
structure. Use Athena to query and analyze the logs. E. Enable NAT gateway access logs.
Publish the logs to an Amazon S3 bucket. Create a custom table
for the S3 bucket in Amazon Athena to describe the log structure. Use Athena to query and
analyze
the logs.
A retail company is running its service on AWS. The company’s architecture includes Application Load
Balancers (ALBs) in public subnets. The ALB target groups are configured to send traffic to backend
Amazon EC2 instances in private subnets. These backend EC2 instances can call externally hosted
services over the internet by using a NAT gateway.
The company has noticed in its billing that NAT gateway usage has increased significantly. A network
engineer needs to find out the source of this increased usage.
Which options can the network engineer use to investigate the traffic through the NAT gateway?
(Choose two.)
Page 12
Question: 8

Explanation:
A banking company is successfully operating its public mobile banking stack on AWS. The mobile
banking stack is deployed in a VPC that includes private subnets and public subnets. The company is
using IPv4 networking and has not deployed or supported IPv6 in the environment. The company has
decided to adopt a third-party service provider's API and must integrate the API with the existing
environment. The service provider’s API requires the use of IPv6.
A network engineer must turn on IPv6 connectivity for the existing workload that is deployed in a
private subnet. The company does not want to permit IPv6 traffic from the public internet and
mandates that the company's servers must initiate all IPv6 connectivity. The network engineer turns
on IPv6 in the VPC and in the private subnets.
To investigate the increased usage of a NAT gateway in a VPC architecture with ALBs and
backend EC2 instances, a network engineer can use the following options:
Enable VPC flow logs on the NAT gateway’s elastic network interface and publish the logs to
a log
group in Amazon CloudWatch Logs. Use CloudWatch Logs Insights to query and analyze
the logs.
(Option A) Enable VPC flow logs on the NAT gateway’s elastic network interface and publish
the logs to an
Amazon S3 bucket. Create a custom table for the S3 bucket in Amazon Athena to describe
the log
structure and use Athena to query and analyze the logs. (Option D) These options allow for
detailed analysis of traffic through the NAT gateway to identify the source of
increased usage.
Page 13
Question: 9
Answer: AD

Explanation:
A company has deployed an AWS Network Firewall firewall into a VPC. A network engineer needs to
A. Create an internet gateway and a NAT gateway in the VPC. Add a route to the existing subnet route
tables to point IPv6 traffic to the NAT gateway.
B. Create an internet gateway and a NAT instance in the VPC. Add a route to the existing subnet route
tables to point IPv6 traffic to the NAT instance.
C. Create an egress-only Internet gateway in the VPAdd a route to the existing subnet route tables to
point IPv6 traffic to the egress-only internet gateway.
D. Create an egress-only internet gateway in the VPC. Configure a security group that denies all
inbound traffic. Associate the security group with the egress-only internet gateway.
Page 14
Question: 10
Answer: C

Explanation:
https://aws.amazon.com/blogs/networking-and-content-delivery/how-to-analyze-aws-network-
firewall-logs-using-amazon-opensearch-service-part-1/
A. Create an Amazon S3 bucket. Create an AWS Lambda function to load logs into the Amazon
OpenSearch Service (Amazon Elasticsearch Service) cluster. Enable Amazon Simple Notification
Service (Amazon SNS) notifications on the S3 bucket to invoke the Lambda function. Configure flow
logs for the firewall. Set the S3 bucket as the destination.
B. Create an Amazon Kinesis Data Firehose delivery stream that includes the Amazon OpenSearch
Service (Amazon Elasticsearch Service) cluster as the destination. Configure flow logs for the firewall
Set the Kinesis Data Firehose delivery stream as the destination for the Network Firewall flow logs.
C. Configure flow logs for the firewall. Set the Amazon OpenSearch Service (Amazon Elasticsearch
Service) cluster as the destination for the Network Firewall flow logs.
D. Create an Amazon Kinesis data stream that includes the Amazon OpenSearch Service (Amazon
Elasticsearch Service) cluster as the destination. Configure flow logs for the firewall. Set the Kinesis
data stream as the destination for the Network Firewall flow logs.
implement a solution to deliver Network Firewall flow logs to the company’s Amazon OpenSearch
Service (Amazon Elasticsearch Service) cluster in the shortest possible time.
Answer: B

A. Configure the BIND DNS servers in the central VPC to forward queries for efs.us-east-
1.amazonaws.com to the Amazon provided DNS server (169.254.169.253).
B. Create an Amazon Route 53 Resolver outbound endpoint in the central VPC. Update all the VPC
DHCP options sets to use AmazonProvidedDNS for name resolution.
C. Create an Amazon Route 53 Resolver inbound endpoint in the central VPUpdate all the VPC DHCP
options sets to use the Route 53 Resolver inbound endpoint in the central VPC for name resolution.
D. Create an Amazon Route 53 Resolver rule to forward queries for the on-premises domain to the
on-premises DNS servers. Share the rule with the organization by using AWS Resource Access
Manager (AWS RAM). Associate the rule with all the VPCs.
E. Create an Amazon Route 53 private hosted zone for the efs.us-east-1.amazonaws.com domain.
Associate the private hosted zone with the VPC where the EC2 instance is deployed. Create an A
A company is using custom DNS servers that run BIND for name resolution in its VPCs. The VPCs are
deployed across multiple AWS accounts that are part of the same organization in AWS Organizations.
All the VPCs are connected to a transit gateway. The BIND servers are running in a central VPC and
are configured to forward all queries for an on-premises DNS domain to DNS servers that are hosted
in an on-premises data center. To ensure that all the VPCs use the custom DNS servers, a network
engineer has configured a VPC DHCP options set in all the VPCs that specifies the custom DNS servers
to be used as domain name servers.
Multiple development teams in the company want to use Amazon Elastic File System (Amazon EFS).
A development team has created a new EFS file system but cannot mount the file system to one of its
Amazon EC2 instances. The network engineer discovers that the EC2 instance cannot resolve the IP
address for the EFS mount point fs-33444567d.efs.us-east-1.amazonaws.com. The network engineer
needs to implement a solution so that development teams throughout the organization can mount
EFS file systems.
Which combination of steps will meet these requirements? (Choose two.)
Page 16
Question: 11

Explanation:
Option B suggests using Amazon Route 53 Resolver outbound endpoint, which would replace the
existing BIND DNS servers with the AmazonProvidedDNS for name resolution. However, the scenario
specifically mentions that the company is using custom DNS servers that run BIND for name
resolution in its VPCs, so this solution would not work. Option D suggests creating a Route 53
Resolver rule to forward queries for the on-premises domain to the on-premises DNS servers, which
would not address the issue of resolving the EFS mount point. The problem is not with resolving
queries for the on-premises domain, but rather with resolving the IP address for the EFS mount
point.
An ecommerce company is hosting a web application on Amazon EC2 instances to handle
continuously changing customer demand. The EC2 instances are part of an Auto Scaling group. The
company wants to implement a solution to distribute traffic from customers to the EC2 instances.
The company must encrypt all traffic at all stages between the customers and the application servers.
No decryption at intermediate points is allowed.
record for fs-33444567d.efs.us-east-1.amazonaws.com in the private hosted zone. Configure the A
record to return the mount target of the EFS mount point.
Question: 12
Answer: BD

Explanation:
A company has two on-premises data center locations. There is a company-managed
router at each data center. Each data center has a dedicated AWS Direct Connect
connection to a Direct Connect gateway through a private virtual interface. The router for
the first location is advertising 110 routes to the Direct Connect gateway by using BGP,
and the router for the second location is advertising 60 routes to the Direct Connect
gateway by using BGP. The Direct Connect gateway is attached to a company VPC through
a virtual private gateway.
A. Create an Application Load Balancer (ALB). Add an HTTPS listener to the ALB. Configure the Auto
Scaling group to register instances with the ALB's target group.
B. Create an Amazon CloudFront distribution. Configure the distribution with a custom SSL/TLS
certificate. Set the Auto Scaling group as the distribution's origin.
C. Create a Network Load Balancer (NLB). Add a TCP listener to the NLB. Configure the Auto Scaling
group to register instances with the NLB's target group.
D. Create a Gateway Load Balancer (GLB). Configure the Auto Scaling group to register instances with
the GLB's target group.
To distribute traffic from customers to EC2 instances in an Auto Scaling group and encrypt all traffic at
all stages between the customers and the application servers without decryption at intermediate
points, the company should create a Network Load Balancer (NLB) with a TCP listener and configure
the Auto Scaling group to register instances with the NLB’s target group (Option C). This solution
allows for end-to-end encryption of traffic without decryption at intermediate points.
Page 18
Question: 13
Answer: C

Explanation:
A. Remove the Direct Connect gateway, and create a new private virtual interface from each
company router to the virtual private gateway of the VPC.
B. Change the router configurations to summarize the advertised routes.
C. Open a support ticket to increase the quota on advertised routes to the VPC route table.
D. Create an AWS Transit Gateway. Attach the transit gateway to the VPC, and connect the Direct
Connect gateway to the transit gateway.
"If you advertise more than 100 routes each for IPv4 and IPv6 over the BGP session, the BGP session
will go into an idle state with the BGP session DOWN."
https://docs.aws.amazon.com/directconnect/latest/UserGuide/limits.html
A network engineer receives reports that resources in the VPC are not reachable from various
locations in either data center. The network engineer checks the VPC route table and sees that the
routes from the first data center location are not being populated into the route table. The network
engineer must resolve this issue in the most operationally efficient manner.
What should the network engineer do to meet these requirements?
Question: 14
Answer: B

A. Create a record for each service in its local private hosted zone
(serviceA.account1.aws.example.internal). Provide this DNS record to the employees who need
access.
B. Create an Amazon Route 53 Resolver inbound endpoint in the shared account VPC. Create a
conditional forwarder for a domain named aws.example.internal on the on-premises DNS servers.
Set the forwarding IP addresses to the inbound endpoint's IP addresses that were created.
C. Create an Amazon Route 53 Resolver rule to forward any queries made to
onprem.example.internal to the on-premises DNS servers.
D. Create an Amazon Route 53 private hosted zone named aws.example.internal in the shared AWS
account to resolve queries for this domain.
E. Launch two Amazon EC2 instances in the shared AWS account. Install BIND on each instance.
Create a DNS conditional forwarder on each BIND server to forward queries for each subdomain
under aws.example.internal to the appropriate private hosted zone in each AWS account. Create a
Set the forwarding IP addresses to the IP addresses of the BIND servers.
A company has expanded its network to the AWS Cloud by using a hybrid architecture with
multiple AWS accounts. The company has set up a shared AWS account for the connection
to its on-premises data centers and the company offices. The workloads consist of private
web-based services for internal use. These services run in different AWS accounts. Office-
based employees consume these services by using a DNS name in an on-premises DNS zone
that is named example.internal.
The process to register a new service that runs on AWS requires a manual and complicated
change
request to the internal DNS. The process involves many teams.
The company wants to update the DNS registration process by giving the service creators
access that
will allow them to register their DNS records. A network engineer must design a solution
that will
achieve this goal. The solution must maximize cost-effectiveness and must require the least
possible
number of configuration changes.
Which combination of steps should the network engineer take to meet these
requirements? (Choose
three.)
Page 20

Explanation:
To meet the requirements of updating the DNS registration process while maximizing cost-
effectiveness and minimizing configuration changes, the network engineer should take the following
steps:
Create an Amazon Route 53 Resolver inbound endpoint in the shared account VPC. Create a
Set the forwarding IP addresses to the inbound endpoint’s IP addresses that were created (Option B).
Create an Amazon Route 53 private hosted zone named aws.example.internal in the shared AWS
account to resolve queries for this domain (Option D).
Create a record for each service in its local private hosted zone
(serviceA.account1.aws.example.internal). Provide this DNS record to the employees who need
access (Option A).
These steps will allow service creators to register their DNS records while keeping costs low and
minimizing configuration changes.
F. Create a private hosted zone in the shared AWS account for each account that runs the service.
Configure the private hosted zone to contain aws.example.internal in the domain
(account1.aws.example.internal). Associate the private hosted zone with the VPC that runs the
service and the shared account VPC.
Question: 15
Answer: ABD

Explanation:
A. Modify the transit gateway VPC attachment on the shared services VPC by enabling cross-
Availability Zone load balancing.
B. Modify the transit gateway VPC attachment on the shared services VPC by enabling appliance
mode support.
C. Modify the transit gateway by selecting VPN equal-cost multi-path (ECMP) routing support.
D. Modify the transit gateway by selecting multicast support.
To resolve the issue of intermittent connections for traffic that crosses Availability Zones
after configuring routing for traffic inspection between VPCs using a transit gateway and
EC2 instances with IDS services in a shared services VPC, a network engineer should modify
the transit gateway VPC attachment on the shared services VPC by enabling appliance mode
support (Option B). This will ensure that traffic is routed to the same EC2 instance for
stateful inspection and prevent intermittent
A company has multiple AWS accounts. Each account contains one or more VPCs. A new
security
guideline requires the inspection of all traffic between VPCs.
The company has deployed a transit gateway that provides connectivity between all VPCs.
The
company also has deployed a shared services VPC with Amazon EC2 instances that include
IDS
services for stateful inspection. The EC2 instances are deployed across three Availability
Zones. The
company has set up VPC associations and routing on the transit gateway. The company has
migrated
a few test VPCs to the new solution for traffic inspection. Soon after the configuration of
routing, the company receives reports of intermittent connections for
traffic that crosses Availability Zones.
What should a network engineer do to resolve this issue?
Answer: B

connections.
A. Validate that private DNS is enabled on the VPC by setting the enableDnsHostnames VPC attribute
and the enableDnsSupport VPC attribute to true.
B. Create a new security group with an entry to allow outbound traffic that uses the TCP protocol on
port 443 to destination 0.0.0.0/0
C. Create a new security group with entries to allow inbound traffic that uses the TCP protocol on
port 443 from the IP prefixes of the private subnets.
D. Create the following interface VPC endpoints in the VPC: com.amazonaws.us-west-2.logs and
com.amazonaws.us-west-2.monitoring. Associate the new security group with the endpoint network
interfaces.
E. Create the following interface VPC endpoint in the VPC: com.amazonaws.us-west-2.cloudwatch.
Associate the new security group with the endpoint network interfaces.
F. Associate the VPC endpoint or endpoints with route tables that the private subnets use.
A company is using a NAT gateway to allow internet connectivity for private subnets in a VPC in the
us-west-2 Region. After a security audit, the company needs to remove the NAT gateway.
In the private subnets, the company has resources that use the unified Amazon CloudWatch agent. A
network engineer must create a solution to ensure that the unified CloudWatch agent continues to
work after the removal of the NAT gateway.
Which combination of steps should the network engineer take to meet these requirements? (Choose
three.)
Page 23
Question: 16

Explanation:
A. Set up an Amazon CloudFront distribution with origin failover. Create an origin group for each
Region where the solution is deployed.
An international company provides early warning about tsunamis. The company plans to use IoT
devices to monitor sea waves around the world. The data that is collected by the IoT devices must
reach the company’s infrastructure on AWS as quickly as possible. The company is using three
operation centers around the world. Each operation center is connected to AWS through Its own
AWS Direct Connect connection. Each operation center is connected to the internet through at least
two upstream internet service providers.
The company has its own provider-independent (PI) address space. The IoT devices use TCP protocols
for reliable transmission of the data they collect. The IoT devices have both landline and mobile
internet connectivity. The infrastructure and the solution will be deployed in multiple AWS Regions.
The company will use Amazon Route 53 for DNS services.
A network engineer needs to design connectivity between the IoT devices and the services that run
in the AWS Cloud.
Which solution will meet these requirements with the HIGHEST availability?
Page 24
Question: 17
Answer: B, D, F

Explanation:
https://aws.amazon.com/blogs/iot/automate-global-device-provisioning-with-aws-iot-core-and-
amazon-route-53/
A company is planning a migration of its critical workloads from an on-premises data center to
Amazon EC2 instances. The plan includes a new 10 Gbps AWS Direct Connect dedicated connection
from the on-premises data center to a VPC that is attached to a transit gateway. The migration must
occur over encrypted paths between the on-premises data center and the AWS Cloud.
Which solution will meet these requirements while providing the HIGHEST throughput?
B. Set up Route 53 latency-based routing. Add latency alias records. For the latency alias records, set
the value of Evaluate Target Health to Yes.
C. Set up an accelerator in AWS Global Accelerator. Configure Regional endpoint groups and health
checks.
D. Set up Bring Your Own IP (BYOIP) addresses. Use the same PI addresses for each Region where the
solution is deployed.
Page 25
Question: 18
Answer: B

Explanation:
https://aws.amazon.com/blogs/networking-and-content-delivery/adding-macsec-security-to-aws-
direct-connect-connections/
A network engineer must develop an AWS CloudFormation template that can create a virtual private
gateway, a customer gateway, a VPN connection, and static routes in a route table. During testing of
the template, the network engineer notes that the CloudFormation template has encountered an
error and is rolling back.
What should the network engineer do to resolve the error?
A. Configure a public VIF on the Direct Connect connection. Configure an AWS Site-to-Site VPN
connection to the transit gateway as a VPN attachment.
B. Configure a transit VIF on the Direct Connect connection. Configure an IPsec VPN connection to an
EC2 instance that is running third-party VPN software.
C. Configure MACsec for the Direct Connect connection. Configure a transit VIF to a Direct Connect
gateway that is associated with the transit gateway.
D. Configure a public VIF on the Direct Connect connection. Configure two AWS Site-to-Site VPN
connections to the transit gateway. Enable equal-cost multi-path (ECMP) routing.
Page 26
Question: 19
Answer: C

Explanation:
A. Change the order of resource creation in the CloudFormation template.
B. Add the DependsOn attribute to the resource declaration for the virtual private gateway. Specify
the route table entry resource.
C. Add a wait condition in the template to wait for the creation of the virtual private gateway.
D. Add the DependsOn attribute to the resource declaration for the route table entry. Specify the
virtual private gateway resource.
A company operates its IT services through a multi-site hybrid infrastructure. The company
deploys resources on AWS in the us-east-1 Region and in the eu-west-2 Region. The
company also deploys resources in its own data centers that are located in the United States
(US) and in the United Kingdom (UK). In both AWS Regions, the company uses a transit
gateway to connect 15 VPCs to each other. The company has created a transit gateway
peering connection between the two transit gateways. The VPC CIDR blocks do not overlap
with each other or with IP addresses used within the data centers. The VPC CIDR prefixes
can also be aggregated either on a Regional level or for the company's entire AWS
environment.
The data centers are connected to each other by a private WAN connection. IP routing
information is
exchanged dynamically through Interior BGP (iBGP) sessions. The data centers maintain
connectivity
to AWS through one AWS Direct Connect connection in the US and one Direct Connect
connection in
the UK. Each Direct Connect connection is terminated on a Direct Connect gateway and is
associated
Page 27
Question: 20
Answer: D

Explanation:
A. Remove all the VPC CIDR prefixes from the list of subnets advertised through the local
Direct Connect connection. Add the company's entire AWS environment aggregate route
to the list of subnets advertised through the local Direct Connect connection.
B. Add the CIDR prefixes from the other Region VPCs and the local VPC CIDR blocks to the
list of
subnets advertised through the local Direct Connect connection. Configure data center
routers to
make routing decisions based on the BGP communities received. C. Add the aggregate IP
prefix for the other Region and the local VPC CIDR blocks to the list of
subnets advertised through the local Direct Connect connection.
D. Add the aggregate IP prefix for the company's entire AWS environment and the local
VPC CIDR
blocks to the list of subnets advertised through the local Direct Connect connection.
E. Remove all the VPC CIDR prefixes from the list of subnets advertised through the local
Direct
Connect connection. Add both Regional aggregate IP prefixes to the list of subnets
advertised
through the Direct Connect connection on both sides of the network. Configure data
center routers
to make routing decisions based on the BGP communities received.
Traffic follows the shortest geographical path from source to destination. For example,
packets from
the UK data center that are targeted to resources in eu-west-2 travel across the local Direct
Connect
connection. In cases of cross-Region data transfers, such as from the UK data center to VPCs
in us-
east-1, the private WAN connection must be used to minimize costs on AWS. A network
engineer has
configured each transit gateway association on the Direct Connect gateway to advertise
VPC-specific
CIDR IP prefixes only from the local Region. The routes toward the other Region must be
learned
through BGP from the routers in the other data center in the original, non-aggregated form.
The company recently experienced a problem with cross-Region data transfers because of
issues with
its private WAN connection. The network engineer needs to modify the routing setup to
prevent
similar interruptions in the future. The solution cannot modify the original traffic routing
goal when
the network is operating normally.
Which modifications will meet these requirements? (Choose two.)
Answer: AD

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