Sharepoint 2010 Web Front End Server and Application Server

Sharepoint 2010 Web Front End Server and Application  Server

If your are uisng FARM Installation.
Web front end should have below services:

1.Microsoft SharePoint Foundation Web Application (this is what turns IIS into a SharePoint “page-serving” machine)
2.Search Query and Site Settings Service (the process that takes the user’s query string and looks it up in the index)
3.SharePoint Server Search Service (but just the functionality that is necessary for the query processor)
4.Central Administration (assuming you didn’t decide to move it to the Application Server)

Application server should have below services:
1.Access Database Service
2.Application Registry Service
3.Business Data Connectivity Service
4.Excel Calculation Services
5.Managed Metadata Web Service
6.Microsoft SharePoint Foundation Incoming E-mail
7.Microsoft SharePoint Foundation Workflow Timer Service
8.PerformancePoint Service
9.Secure Store Service
10.SharePoint Server Search (but just the scheduled content crawling and indexing building functionality)
11.User Profile Service
12.Visio Graphics Service
13.Web Analytics Data Processing Service
14.Web Analytics Web Service
15.Word Automation Services
16.Word Viewing Service