[SAA + SAP] 26. VPC - 2

Direct Connect (DX)

• Provides a dedicated private connection from a remote network to your VPC
• Dedicated connection must be setup between your DC and AWS Direct connection locations
• You need to setup a Virtual Private Gateway on your VPC
• Access public resources (S3) and private (EC2) on same connection
• Use cases:
  • Increase banwidth throughput - working with large data sets. - lower cost
  • More consistent network experience - applications using real-time data feeds
  • Hybrid Env (on prem + cloud)
• Supports both IPv4 and IPv6

• Between Corporate data center and VPC, there are AWS Direct connect location
• Setup Private virtual interface connection between Corporate data center and AWS DC location
• Public virtual interface for S3 connection

• To connect multi VPC in different region
• Direct Connect Gateway

• Data is not encrypted
• But can setup VPN for extra security

 

• Because all IPv6 are public
• Egree only Internet gateway only for IPv6
• Only allow Out, but NOT in

• Connect to multi Customer networks
• Works with VPC only
• Goes to public network

• Option1: everything goes into public, not good
• Option2: create many perring relations, open for the whole netowrk (all EC2 in one VPC become accessible to other appliation in VPC)

• Need NLB and ENI

• Point NLB to ALB

• IP Multicast, only service support IP multicase is Transit gateway

• Transit gateway, increate 2.5 Gbps/connection

• Direct Connect Gateway to connect Transit Gateway

• IPv4 cannot be disabled

• If you are not able to access your EC2 instances
• Then it might be because there is no available IPv4 in your subnet

 

• Support Weighting

• DC willl be the main route
• VPN as failover

 

Answer: C,F,H

 

A: No such thing "enhancned peering"

B: Problem is slower but not "Not able to connect"

C: Correct

D: "Not able to connect"

E: No limit for Internet Gateway bandwidth, wrong

F: If routing all the way to the corporate network, not VPC peer network, then it will be limited by corporate network speed, possible to be slow

G: Not able to connect

H: Jubo Frames can slow down traffic

 

eCommerce site, which might relate to shopping cart, then it is related to sticky session.

Route 53-Multi-value, it does help with load balancing, but it might cause problem with sticky session.

CloudFront doesn't help to distribute traffic.

ALB is good answer since we need sticky session.