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AWS-Advanced-Networking-Guide

  • AWS Services
  • AWS White Papers
  • Courses
  • Blog Posts
  • Exam Guide
  • Sample Exams
  • Things to remember
Domain % of Exam
Domain 1: Design and implement hybrid IT network architectures at scale 24%
Domain 2: Design and implement AWS networks 28%
Domain 3: Automate AWS tasks 8%
Domain 4: Configure network integration with application services 14%
Domain 5: Design and implement for security and compliance 12%
Domain 6: Manage, optimize, and troubleshoot the network 14%

AWS Services

  • VPC
    • NACL
    • Security Groups
    • VPC endpoints
    • Subnets
    • Route Tables
    • EC2
    • Placement groups
    • Enhanced networking
      • Secondary ENI
      • ENA
      • EFA
      • EBS Optimized
      • MTU
      • Throughput to the internet
    • VPC Traffic Mirroring
  • Direct Connect link
  • AWS and IPsec VPN
  • Load Balancing
  • AWS Global Accelerator
  • Gateways
    • Internet gateway
    • Egress internet
    • NAT gateway
    • Virtual GW
    • Customer gateway
    • AWS Transit Gateway
  • AWS Config
  • Amazon SNS
  • AWS Lambda
  • CloudFormation
  • Amazon CloudWatch
  • Amazon CloudWatch Logs
  • Network Manager
  • Route 53
  • Network Security
    • VPC flow log
    • AWS CloudTrail
    • IAM policies
    • AWS KMS
    • AWS WAF
    • GuardDuty
    • AWS Shield

Networking Topics

  • High availability/load balancing
  • VLANs
  • 801.q
    • 802.1Q is an Ethernet standard as defined by the IEEE that enables Virtual Local Area Networks (VLANs) on an Ethernet network.
  • BFD
    • Bidirectional Forwarding Detection (BFD) is a mechanism used to support fast failover of connections in the event of a failure in the forwarding path between two routers.
  • LAG
    • A Link Aggregation Group (LAG) is a logical interface that uses the Link Aggregation Control Protocol (LACP) to aggregate multiple 1 Gbps or 10 Gbps connections
  • Routing
  • Subnetting
  • DNS
  • DHCP
  • Sticky Sessions
  • DMZ
  • Data at rest and in transit
  • BGP
    • Border Gateway Protocol (BGP) is a routing protocol used to exchange network routing and reachability information, either within the same or a different autonomous system.
  • AS_PATH prepending
    • is a mechanism where you artificially make the AS_PATH longer on one connection compared to the other by adding your own ASN multiple times to the path.

Whitepapers

Courses/Videos

Blog Posts

https://crishantha.medium.com/aws-site-to-site-vpn-c4baf45703fd

Exam Guide

https://d1.awsstatic.com/training-and-certification/docs-advnetworking-spec/AWS-Certified-Advanced-Networking-Specialty_Exam-Guide.pdf

Sample Exams

Things to remember

Route Table Priority

Priority Description
1 Local route, even if a more specific route exists for the CIDR
2 Most specific route (longest-prefix match)
3 Static routes are preferred over dynamic routes for equivalent prefixes
4 Dynamic routes propagated from AWS Direct Connect
5 Static routes configured on a VGW VPN connection
6 Dynamic routes propagated from a VPN

BGP path selection order is as follows:

  1. Local routes to the VPC (no override with more specific routing)
  2. Longest prefix match first
  3. Static route table entries preferred over dynamic
  4. Dynamic routes:
    1. Prefer AWS Direct Connect BGP routes
      1. Shorter AS_PATH
      2. Considered equivalent and will balance traffic per flow
    2. VPN static routes (defined on VPN connection)
    3. BGP routes from VPN
      1. Shorter AS_PATH

VPC Endpoints

Gateway endpoints ( Route Table entry )

  • Amazon Simple Storage Service (Amazon S3)
  • Amazon DynamoDB.

Interface endpoints ( ENI in your VPC )

  • Amazon Kinesis Streams
  • Elastic Load Balancing API
  • Amazon EC2 API
  • Amazon EC2 Systems Manager (SSM)
  • AWS Service Catalog
  • Endpoint services hosted by other account
  • Partner Solutions

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