Section 8 High Availability & Scalability ELB & ASG Flashcards
Health checks with network load balancers support which protocols?
TCP
HTTP
HTTPS
What protocol and port does the gateway load balancer use?
Geneve protocol on port 6081
Gateway load balancers operate at what layer
Network layer(3)
What two functions do GWLBs perform
Transparent network gateway and load balancing
Sticky sessions work for which load balancers?
Classic
Application
Network
Two types of sticky session cookie names
Application based
Duration Based
Is cross zone load balancing enabled or disabled by default for an ALB
Enabled
Is cross zone load balancing enabled or disabled by default for an NLB and GLB
Disabled
Is cross zone load balancing enabled or disabled by default for an classic load balancer
Disabled
What does connection draining or deregistration delay provide
It allows for in-flight requests to complete while an instance is re-registering or unhealthy
Elastic Load Balancers provide a..
Static IPv4 you can use in you application?
Static DNS name you can use in your application?
Static IPV6 you can use in your application?
Static DNS name
Application load balancers support the following protocols except…
HTTP
HTTPS
TCP
WebSocket
TCP
Network load balancers support which protocols?
TCP
TLS
UDP
What are the three ways traffic can be routed to different target groups with an ALB?
Path in URL
Hostname in URL
Query string headers
With an ALB what header is the client IP located in?
X-Forwarded-For
With an ALB what header is the port located in?
X-Forwarded-Port
With an ALB what header is the protocol located in?
X-Forwarded-Proto
How many static IPs per AZ does a NLB support
1
