AWS Certified Advanced Networking Specialty (ANS-C01)
Exam Notes & Practice Tests
Exam Notes Across All Domains | 8 Full-Length Practice Tests + Answers with Explanations
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Question 1 of 651. Question
A company has deployed multiple Amazon VPCs across two AWS Regions. The company requires full interconnectivity between the VPCs and an on-premises data center, while maintaining low latency and high throughput. The architecture must also support future growth. What is the best solution to meet these requirements?
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Question 2 of 652. Question
A company hosts a website in two AWS Regions to improve availability. Amazon Route 53 is used to route traffic between the Regions. The company requires a DNS solution that routes traffic to the closest Region and automatically switches to the other Region in the event of a failure. Which Route 53 configuration meets these requirements?
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Question 3 of 653. Question
A company has a VPC with a CIDR block of 10.0.0.0/16. The company’s workloads have outgrown the available IP addresses. What steps should a network engineer take to expand the IP range?
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Question 4 of 654. Question
A company requires a hybrid network with a secure, high-performance connection between its on-premises data center and AWS. The company also requires backup connectivity in case the primary connection fails. What is the best solution?
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Question 5 of 655. Question
A company operates a latency-sensitive application deployed in multiple AWS Regions. Users should always be routed to the closest Region for optimal performance, and failover must occur automatically. What service should be used?
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Question 6 of 656. Question
An application hosted on AWS Elastic Beanstalk has been updated to include a second EC2 instance and an Application Load Balancer (ALB). Users are now frequently prompted to log in again, even though their sessions should remain active for hours. What configuration change can address this issue?
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Question 7 of 657. Question
A network engineer enabled VPC Flow Logs to diagnose connectivity issues between an application server and a database server in separate subnets. The logs show ACCEPT for requests sent to the database instance but REJECT for responses returning to the application server. What could be causing this issue?
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Question 8 of 658. Question
A network engineer is troubleshooting connectivity to an EC2 instance that consistently returns a “request timed out” error. The public IP of the client is 198.51.100.12, and the private IP of the EC2 instance is 10.0.1.25. VPC Flow Logs reveal the following: eni-123456abc, 198.51.100.12, 10.0.1.25, ACCEPT; eni-123456abc, 10.0.1.25, 198.51.100.12, REJECT. What configuration could resolve this issue?
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Question 9 of 659. Question
A network engineer is configuring a public virtual interface (VIF) for an AWS Direct Connect connection. They want to ensure only routes from the same Region are imported. What configuration will achieve this?
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Question 10 of 6510. Question
A company is deploying an API with Amazon API Gateway to serve customers across multiple Regions using a custom domain name. How should the company ensure the API is accessible with minimal latency?
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Question 11 of 6511. Question
A company’s VPC with a CIDR block of 192.168.1.0/24 has run out of IP addresses. What is the best way to ensure new resources can be launched?
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Question 12 of 6512. Question
Which IP addresses are reserved by AWS for DNS resolution in a VPC with the CIDR block 10.0.0.0/16? (Select TWO.)
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Question 13 of 6513. Question
A company’s VPC connects to an on-premises data center via a Site-to-Site VPN and Direct Connect. What is the BGP route selection order from MOST to LEAST preferred?
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Question 14 of 6514. Question
A company streams weather data into a source VPC and needs to simultaneously distribute it to multiple data analysis VPCs for processing. What is the best configuration?
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Question 15 of 6515. Question
A company plans to use a Site-to-Site VPN to connect its on-premises network to four VPCs in an AWS Region with full transitive routing between all entities. Which solution meets the requirement?
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Question 16 of 6516. Question
A gaming application uses both TCP and UDP protocols and requires connections to be distributed across multiple EC2 instances in different Availability Zones. How should a network engineer configure the Network Load Balancer?
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Question 17 of 6517. Question
A security team needs to monitor unauthorized connection attempts to a malicious IP address that has been blocked using a Network ACL. What is the MOST cost-effective way to achieve this?
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Question 18 of 6518. Question
A company with dual Direct Connect connections wants to minimize failover time when switching from the primary to the backup connection. How can this be achieved?
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Question 19 of 6519. Question
A company wants to access application logs stored in an S3 bucket in the us-west-2 Region over a Direct Connect connection in the us-east-1 Region. What configuration should the company use?
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Question 20 of 6520. Question
A VPC using CIDR block 192.168.0.0/16 is running out of IP addresses. Which additional CIDR blocks can be added? (Select TWO.)
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Question 21 of 6521. Question
A network engineer needs a cost-effective solution to monitor traffic flows in a VPC and log ACCEPT and REJECT traffic for analysis. What should they configure?
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Question 22 of 6522. Question
A company has replaced its NTP server with one that uses a new IP address. How should the VPC be updated to reflect this change?
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Question 23 of 6523. Question
A security team needs to monitor multiple AWS accounts for malicious activity without direct access to each account. What is the most efficient way to achieve this?
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Question 24 of 6524. Question
A company plans to migrate DNS records to Route 53, using example.com for public services and private.example.com for internal services in a VPC. What is the best way to implement this?
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Question 25 of 6525. Question
An application in a private subnet uses a Direct Connect connection to route all traffic, including outbound internet traffic, through an on-premises proxy server. EC2 instances are unable to connect to external web services. What should the network engineer do to resolve this?
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Question 26 of 6526. Question
A company plans to deploy 1,000 Amazon Workspaces across two Availability Zones. The architecture must support Multi-AZ deployment and accommodate future growth. What is the most appropriate configuration?
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Question 27 of 6527. Question
A retail website on EC2 instances behind an Application Load Balancer (ALB) must be accessible at example.com and www.example.com. The DNS zone is hosted in Route 53. What records should the network engineer create?
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Question 28 of 6528. Question
An application behind an Auto Scaling group needs to send sensitive metrics to CloudWatch over private IP addresses without public endpoint exposure. How can this requirement be met?
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Question 29 of 6529. Question
A consultant is configuring logging for an application behind a load balancer to capture the client’s source IP address. What behavior can be expected by default? (Select TWO.)
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Question 30 of 6530. Question
A company must migrate 100 virtual machines (VMs) to AWS using AWS SMS within 14 days, leveraging a 1 Gbps internet connection during non-peak hours. Each VM averages 20 GB. What is the best migration approach?
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Question 31 of 6531. Question
A company requires 99.9% SLA for Direct Connect connections to its VPC. What is the most cost-effective solution?
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Question 32 of 6532. Question
Remote offices will use Amazon Workspaces. Which firewall configuration supports streaming of Workspaces desktops?
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Question 33 of 6533. Question
An organization’s web application in a VPC must be accessible to other VPCs within the same Region without using the internet. What is the best solution?
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Question 34 of 6534. Question
An EC2-based application behind an Application Load Balancer (ALB) frequently experiences timeouts during large file uploads. What steps can mitigate this issue? (Select TWO.)
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Question 35 of 6535. Question
A network engineer must log all IP traffic in a VPC and run SQL queries against the log data. What solution should be implemented?
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Question 36 of 6536. Question
A company is designing a microservices application to run on Amazon ECS. The application requires multiple services accessed through different paths, all behind a single Elastic Load Balancer. Additionally, the application must log the client’s source IP address. What should the network engineer configure? (Select TWO.)
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Question 37 of 6537. Question
A network engineer is setting up an AWS Site-to-Site VPN connection and must update firewall rules to allow the required traffic. Which types of traffic should be permitted? (Select TWO.)
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Question 38 of 6538. Question
A company has two data centers connected to a virtual private gateway attached to a VPC. The data centers have the following CIDR blocks: Data Center A: 192.168.10.0/24; Data Center B: 192.168.20.0/24. What route table entry should the network engineer configure for traffic destined to the data centers?
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Question 39 of 6539. Question
A VPC with CIDR block 10.0.0.0/16 requires multiple subnets, each supporting at least 2,000 assignable IP addresses. Which subnet mask should the network engineer choose?
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Question 40 of 6540. Question
A network provider has provisioned a circuit for Direct Connect and needs cross-connect information. How can the network engineer provide this information?
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Question 41 of 6541. Question
A company is deploying an application in an Amazon VPC that needs to communicate with on-premises servers. The initial traffic is low but is expected to exceed 5 Gbps within six months. What connectivity solution should the network engineer implement?
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Question 42 of 6542. Question
An RDS MySQL instance requires encryption in transit for connections from application servers. What steps should the network engineer take?
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Question 43 of 6543. Question
A company uses CloudFormation templates to deploy VPCs with varying CIDR blocks. What intrinsic function should the engineer use to return a range of CIDR addresses?
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Question 44 of 6544. Question
A three-tier application in a VPC requires minimal public exposure. The web and application tiers are hosted in EC2 instances, and the database tier uses DynamoDB. Which architecture meets these requirements?
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Question 45 of 6545. Question
A website served through CloudFront uses country-specific subdomains (us.example.com, uk.example.com). Requests to example.com must redirect users to the correct subdomain based on their location. How should the network engineer achieve this?
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Question 46 of 6546. Question
A company is establishing hybrid cloud connectivity using AWS Direct Connect (DX). The DX connection must access multiple VPCs and a private Amazon S3 bucket within the same Region. What configuration minimizes customer router setup?
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Question 47 of 6547. Question
A company is running an application on Amazon EC2 and connecting to on-premises servers via Direct Connect. To ensure consistent performance and in-transit encryption, what is the best solution?
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Question 48 of 6548. Question
Two companies are collaborating, and Company B requires static public IP addresses to whitelist for accessing Company A’s EC2 application over a custom TCP port. How should the architecture be designed?
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Question 49 of 6549. Question
To analyze the frequency of DNS queries in an Amazon Route 53 public hosted zone, what steps should the engineer take?
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Question 50 of 6550. Question
A network administrator must update the domain name provided by DHCP to a custom subdomain for EC2 instances. What is the best approach?
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Question 51 of 6551. Question
A company deploys a retail website using CloudFront. To safeguard against DDoS, SQL injection, and XSS attacks, what AWS services should be used? (Select TWO.)
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Question 52 of 6552. Question
A high-performance computing (HPC) application in a cluster placement group requires optimized network throughput. How can the network engineer achieve this?
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Question 53 of 6553. Question
A network engineer must encrypt data in transit for a web application behind an Elastic Load Balancer. What options should be implemented? (Select TWO.)
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Question 54 of 6554. Question
A VPC with CIDR block 10.0.0.0/22 must have 10 subnets, each supporting at least 50 hosts. What subnet mask should the engineer choose?
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Question 55 of 6555. Question
To prevent unauthorized configuration changes to an Application Load Balancer, management requests auditing and notifications for changes. What actions should be taken?
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Question 56 of 6556. Question
A company must replace a failed on-premises Network Attached Storage (NAS) device with an AWS Storage Gateway file gateway. The fastest deployment option is required. What should the company do?
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Question 57 of 6557. Question
A company has deployed multiple Amazon VPCs connected via AWS Transit Gateway. Private subnet instances require internet access through NAT gateways. How can the company reduce NAT gateway costs while maintaining redundancy?
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Question 58 of 6558. Question
A financial institution requires sub-millisecond latency between its New York data center and AWS services in us-east-1. How can the institution achieve this without deploying dedicated private links?
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Question 59 of 6559. Question
A VPC uses default network ACLs in Subnet A and custom ACLs in Subnet B. Instances in both subnets must connect over TCP port 443. What configurations are required? (Select TWO.)
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Question 60 of 6560. Question
Instances in a newly added Availability Zone are healthy but do not receive traffic from an Application Load Balancer. What action should the engineer take?
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Question 61 of 6561. Question
How can a network engineer automate VPC creation while ensuring unique CIDR ranges and adherence to corporate standards?
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Question 62 of 6562. Question
A consultant creates VPCs in different accounts with overlapping CIDR blocks. How can this be automated and standardized across accounts?
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Question 63 of 6563. Question
How should a company load balance traffic to EC2 instances for multiple subdomains, such as api.example.com and mobile.example.com, using a cost-effective solution?
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Question 64 of 6564. Question
A network ACL is configured to block traffic to 192.168.0.0/24, but no outbound traffic is allowed from a subnet. What is the likely issue?
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Question 65 of 6565. Question
A VPC's virtual private gateway prefers AWS Direct Connect routes over VPN routes. How can this behavior be explained?
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Course Duration
Notes: 1h 02m | Quiz: 22h 40m | Total: 23h 42mWhat you get
8 Full-Length Practice Exams
Each exam includes 65 exam-style questions with clear, concise explanations designed to mirror real ANS-C01 exam complexity.
520 Practice Questions
Strengthen advanced networking design, hybrid connectivity, routing, segmentation, and troubleshooting decision-making across all exam domains.
Exam Notes Across All Domains
Structured notes covering network architecture, hybrid connectivity, DNS & traffic management, network security, performance optimization, monitoring, and troubleshooting strategies.
Answer Explanations
CUnderstand why each option is correct and why others are not, reinforcing real-world architectural reasoning and exam confidence.
What you’ll be able to do after this
FAQ
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