A teenage fashion website has a multi-tier web application with 103 web servers, 12 middle-tier
servers, and a large RDBMS server with more than enough capacity to support peak loads. You
are the architect of the system, and you are concerned about reliability of the web application.
Which change could you make to improve reliability?
A.
Add additional web servers
B.
Add additional database servers
C.
Add additional middle-tier servers
D.
Reduce the number of web servers
E.
Reduce the number of middle-tier servers