
An independent study guide for Microsoft Certified: Azure Network Engineer Associate · by Tony Rough
Know where the traffic flows, and why.
Publishing soon on Amazon in Kindle and paperback editions.
Plus an appendix glossary of 600+ terms, each linked to Microsoft Learn, and free online for print readers.



Some sections of the book, free to read online:
How many usable addresses each prefix gives in Azure, why five are always reserved, and how to size subnets for gateways, Bastion and VMs.
Resolving Azure private zones from on-premises and on-premises names from Azure, with subnet sizing and ruleset rules.
Where each peering setting goes, what spokes can reach, and why peering isn't transitive.
Longest prefix match, system routes versus user-defined routes, and how a 0.0.0.0/0 route forces internet traffic on-premises.
What each ExpressRoute feature does, which SKUs and gateways it needs, and where it fits on a circuit.
A decision guide by traffic type (HTTP or not) and scope (regional or global).
The CNAME chain from a public service name to a private endpoint, zone groups and zone links.
Rule order, the default rules, and what happens to a flow between subnets and to return traffic.