Module 2bd - Exploring Azure Core Products - Networking, ExpressRoute Flashcards
What is Azure ExpressRoute?
A Service that allows you to extend and connect your On-Prem Networks to Cloud Services (Azure, even SaaS offerings) via private connection using a Connectivity Provider
ExpressRoute can go over the public Internet (T/F)?
False. Stays private by going over the Microsoft Backbone
What kind of network Connectivity support does ExpressRoute have? What three (3) advantages does it offer?
Connectivity for:
- Any-to-Any networks (WANs)
- Point-to-Point Ethernet networks (LANs)
- Virtual Cross-Connection w/ a Connectivity Provider at a colocation facility (WANs and LANs colocated at the the ISP)
Offers:
- Consistent reliability and latency
- Faster speeds
- Higher security
How does ExpressRoute provide Layer 3 Connectivity?
ExpressRoute provides Layer 3 connectivity between On-Prem and Cloud through Connectivity Providers (There’s a TON of them)
See card on “Connectivity”
ExpressRoute - Describe its Built-in Redundancy
All redundant connectivity is configured with … L2 or L3?
The Connectivity Provider uses redundant devices to ensure high availability. All configured with L3
What Microsoft Cloud Services does ExpressRoute have direct connectivity to?
- Microsoft Office 365
- Dynamics 365
- Azure Compute and Cloud Services
Why use ExpressRoute to connect to Office 365?
What’s the requirement for connectivity requests?
When customer regulatory requirements mandate DIRECT CONNECTIVITY to Office 365.
A reference link must be included in the request form for ExpressRoute for Office 365 requests
What does enabling ExpressRoute Global Reach do?
Enable Global Reach to exchange data cross your On-Prem Sites through connected instances of ExpressRoute (data travels through Microsoft’s Backbone network)
What does ExpressRoute do wrt Dynamic Routing?
Same thing as VPN Gateways! It uses BGP to exchange routes between On-Prem networks and Resources running on Azure.
ExpressRoute Connectivity Models - What is CloudExchange Colocation?
CloudExchange is limited to L3 Connections (T/F)?
Colocated Providers offer connections between infrastructure located in a colocation facility (ex. a datacenter colocated at an ISP), and Microsoft Cloud.
False: Offers both L2 and L3 connections
What does a Point-to-Point Ethernet Connection do?
P2P Ethernet Connections are limited to L2 (Data Link) Connectivity (T/F)?
These can provide connectivity between On-Prem Sites and Azure
False. The provide both L2 and L3 connectivity
What does an Any-to-Any Connection allow you to do?
What Layer is this limited to?
Allows you to plug in your WANs (Wide Area Network) to Azure via connections to your offices and datacenters.
Only provides L3 connectivity
What makes ExpressRoute great w.r.t. data privacy?
Data does not travel over the public Internet, so it’s not exposed to related risks
What three (3) things still go over the public Internet, despite having an ExpressRoute?
- DNS queries
- Cert Revocation checking
- Azure CDN requests
What is OSI Model Layer 2 (L2) and what does it provide?
The Data Link Layer, providing node-to-node communication between 2 nodes on the same network
