What is the difference between Tier 1 and Tier 2 routers?
One of the ways that Tier 1s differ from Tier 2s is in how they make network engineering decisions. The result is that Tier 2 networks often perform better for customers. Every network provider must engineer its network to deliver traffic with sufficiently good performance to satisfy customer requirements. Tier 2 support (L2) Tier 2, also called level 2 support, engages L2 staff with a higher level of expertise and deeper knowledge of apps, systems, and issues. Tier 2 support involves in-depth troubleshooting and time-intensive problem-solving or more complex issues that are less common.
What is 2 and 3 tier?
A two-tier DB architecture either buries the application logic within the server database, on the client (inside the UI), or both of them. A three-tier DB architecture buries the process or application logic in the middle-tier. Thus, it acts as a separate entity from the Client/ User Interface and the data Interface. A two-tier DB architecture is comparatively much easier to maintain as well as build. A three-tier DB architecture is comparatively much complex to maintain as well as build. It runs at a comparatively slower pace. It runs and works at a comparatively faster pace.