network Flashcards
T/F Subnets can communicate with eachother by default?
True
T/F A subnet can span multiple-AZs
False, subnets are only within a single AZ
T/F You can only have one internet gateway per subnet
False, only one IGW per VPC
A ___ allows instances in a private subnet to access resources on the public internet
NAT Gateway
T/F Any instance placed in a public subnet will be internet accessible
False - you must assign a public IP, elastic IP, or attach a load balancer
You have a NAT instance and sg configured, but your private instances cannot access the internet - how can you resolve this issue?
disable source / destination checks on NAT instance
What are 2 things to check if VPC peering is setup, but not working
security group allows access
routing tables are configured on both peer vpcs
Direct Connect is not fault-tolerant by default. If you require fault-tolerant connections you must configure a ___ or setup ___
site-to-site VPN using customer VPN gateway and virtual private gateway and BGP failover OR configure two direct connects
T/F layer 2 connections are supported via direct connect
False
T/F Enhanced networking requires PV instances
False, it requires Hardware Virtual Machines (HVM)
T/F You cannot move instances into a placement group
True
T/F You can always add new instances to a placement group
False
T/F You can assign an EIP to a CLB
False
T/F CLB only support IPv6
False
CLB Supports ports 1 - ___
65535 (vpc) and 25, 80, 443, 465, 587, 1024 - 65535 (classic)
