🏗️ Amazon VPC Design & Architecture - ANS-C01 Practice Questions

Master VPC CIDR planning, subnet design, route tables, NAT gateways, VPC endpoints, IPv6, and multi-VPC architectures for the ANS-C01 exam.

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2Exam Domains

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ANS-C01 VPC Design Question Bank (13 Questions)

Browse all 13 practice questions covering Amazon VPC Design & Architecture for the ANS-C01 certification exam. Answers are intentionally hidden on this page so you can self-test first before checking results in quiz mode.

  1. Question 1Network Design

    A company builds a scalable, highly available VPC using multiple AZs. All internet-bound traffic from private subnets must route through NAT Gateways. Which placement maximizes availability?

    AOne NAT Gateway in a single AZ shared across all subnets
    BOne NAT Gateway per AZ in a public subnet with private subnets routing to the NAT in the same AZ
    CNAT Gateway placed in a private subnet
    DInternet Gateway as a replacement for NAT Gateways

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  2. Question 2Network Implementation

    A networking team configures a VPC with public and private subnets across 3 AZs. EC2 instances in private subnets need internet access for OS updates. A NAT Gateway is created in one public subnet. What change improves NAT availability?

    AAdd an Internet Gateway to private subnets
    BCreate a NAT Gateway in each Availability Zone
    CUse a NAT Instance instead of NAT Gateway
    DEnable Direct Connect as backup internet access

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  3. Question 3Network Design

    What is CIDR overlap considerations in multi-VPC design?

    ANot important
    BVPC peering and Transit Gateway require non-overlapping CIDRs between connected VPCs; plan IP addressing with secondary CIDRs and IPAM to avoid conflicts
    COverlapping is fine
    DAWS resolves overlaps automatically

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  4. Question 4Network Design

    Which feature allows VPCs to share subnets with other AWS accounts within the same organization?

    AVPC Peering
    BAWS RAM (Resource Access Manager)
    CAWS PrivateLink
    DTransit Gateway

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  5. Question 5Network Design

    An architect is designing an IPv6-only subnet for containerized workloads. Which NAT option allows these containers to communicate with IPv4-only services?

    ANAT Gateway
    BNAT Instance
    CNAT64 with DNS64
    DEgress-only Internet Gateway

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  6. Question 6Network Design

    Which VPC feature provides a private connection to AWS services without traversing the internet or NAT Gateway?

    AInternet Gateway
    BVPC Gateway Endpoint
    CNAT Gateway
    DElastic IP

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  7. Question 7Network Implementation

    Which type of VPC endpoint should be used to privately access Amazon SQS from within a VPC?

    AGateway Endpoint
    BInterface Endpoint (PrivateLink)
    CGateway Load Balancer Endpoint
    DPeering Endpoint

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  8. Question 8Network Design

    What is a VPC endpoint and what types exist?

    AA VPN connection
    BA private connection to AWS services: Gateway endpoints (S3/DynamoDB, free, route-table based) and Interface endpoints (PrivateLink, ENI-based)
    CA public IP
    DA load balancer

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  9. Question 9Network Design

    What is the difference between interface VPC endpoints and gateway VPC endpoints?

    ASame thing
    BInterface endpoints: ENI with private IP in your subnet (most AWS services). Gateway endpoints: route table entry for S3 and DynamoDB only, no additional charge.
    CInterface is free
    DGateway works for all services

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  10. Question 10Network Implementation

    A company deploys a new service in a VPC with CIDR 10.0.0.0/16. They need to peer with another VPC that also uses 10.0.0.0/16. What is the fundamental issue?

    AEnable VPC Peering with CIDR translation enabled
    BVPC Peering cannot be established between overlapping CIDRs; use AWS PrivateLink instead
    CUse Transit Gateway to route between overlapping CIDRs
    DAssign secondary CIDRs to one VPC and peer using those

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  11. Question 11Network Design

    Which CIDR block range is recommended for a VPC that needs to peer with on-premises networks using 10.0.0.0/8?

    A10.1.0.0/16
    B172.16.0.0/16
    C10.0.0.0/16
    D192.168.0.0/16

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  12. Question 12Network Implementation

    What is IPv6 support in AWS VPCs?

    ANot supported
    BVPCs support dual-stack (IPv4+IPv6) with /56 CIDR blocks, IPv6-only subnets, IPv6 egress-only internet gateways, and IPv6 support in most services
    CIPv6 only
    DRequires special configuration

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  13. Question 13Network Design

    What is IPv6 support in AWS VPC?

    ANot supported
    BFull dual-stack support: VPCs can have both IPv4 and IPv6 CIDR blocks, with IPv6 support across subnets, route tables, security groups, NACLs, and most AWS services
    CIPv6 only
    DPartial support

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Key VPC Design Concepts for ANS-C01

vpccidrsubnetroute tablenat gatewayvpc endpointipv6multi-vpc

ANS-C01 VPC Design Exam Tips

Amazon VPC Design & Architecture questions in ANS-C01 are typically scenario-based. Focus on advanced networking architecture, hybrid connectivity, and route control. Priority concepts: vpc, cidr, subnet, route table, nat gateway, vpc endpoint.

What ANS-C01 Expects

  • Anchor your answer in select the design that preserves connectivity goals while minimizing blast radius and latency.
  • VPC Design scenarios for ANS-C01 are frequently mapped to Domain 1 (30%), Domain 2 (26%), so read the objective carefully before picking controls or architecture.
  • Expect multi-topic scenarios where VPC Design interacts with IAM, networking, storage, or observability patterns rather than appearing as an isolated question.
  • When two options are both technically valid, prefer the choice that best aligns with the exam's operational scope (Specialty) and vendor best practices.

High-Value VPC Design Concepts

  • Know the core VPC Design building blocks cold: vpc, cidr, subnet, route table.
  • Review the edge-case features and limits for nat gateway, vpc endpoint; these details are commonly used to differentiate answer choices.
  • Practice service-integration reasoning: how VPC Design pairs with Transit Gateway, PrivateLink, Network Security in real deployment patterns.
  • For ANS-C01, explain why the chosen VPC Design design meets reliability, security, and cost expectations better than the alternatives.

Common ANS-C01 Traps

  • Watch for non-transitive assumptions in peering and route propagation.
  • Questions in Network Design often include distractors that look correct for VPC Design but violate least-privilege, durability, or availability requirements.
  • Avoid picking options purely by feature name; validate data path, failure handling, and governance impact before answering.
  • If the prompt hints at automation or repeatability, eliminate manual-only operational answers first.

Fast Review Checklist

  • Can you compare at least two VPC Design implementation paths and justify which one best fits the scenario?
  • Can you map the chosen answer back to Network Design (30%) outcomes for ANS-C01?
  • Can you explain security and access boundaries for VPC Design without relying on default-open assumptions?
  • Can you describe how VPC Design integrates with Transit Gateway and PrivateLink during failure, scaling, and monitoring events?

Exam Domains Covering VPC Design

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