Practice infrastructure diagram vocabulary: VPC, subnets, availability zones, traffic flow descriptions, load balancer conventions, and firewall boundary language.
0 / 5 completed
1 / 5
In an infrastructure diagram, how would you describe the relationship between a VPC and a subnet?
A VPC is your isolated virtual network with its own IP address range (CIDR block). Subnets are subdivisions of that range — public subnets have internet gateway access, private subnets don't. In diagrams, you show subnets as boxes inside the VPC box.
2 / 5
When describing traffic flow in an infrastructure diagram, which phrase is standard?
'Traffic flows from X to Y' is the standard language. For infrastructure reviews you might say: 'Traffic flows from the internet through the WAF and ALB to the app servers in the private subnet, which then query the RDS instance in the database subnet.'
3 / 5
What does 'availability zone' represent in an infrastructure diagram?
An availability zone (AZ) is a physically separate data center within a cloud region. Infrastructure diagrams typically show resources replicated across 2–3 AZs with dashed or colored boxes separating them, to illustrate high-availability design.
4 / 5
In an infrastructure diagram, what does a 'firewall boundary' typically represent visually?
A firewall boundary in infrastructure diagrams is shown as a dashed box or colored border separating network security zones. Traffic crossing the boundary implies filtering or inspection rules. You'd say: 'All traffic crossing this boundary is inspected by the WAF.'
5 / 5
How would you describe a load balancer's role when presenting an infrastructure diagram?
When presenting, describe the load balancer's function: 'The Application Load Balancer receives all inbound HTTPS traffic and distributes it across the three app server instances in our autoscaling group, with health checks ensuring unhealthy instances are removed automatically.'