e portals development 2

What is the difference between synchronous and asynchronous web methods? Give an example of synchronous and asynchronous web methods? How can we transform a synchronous web method to asynchronous web methods?

What is web cache? How a web cache work? Give an example of how a web cache can assist a web portal (considering any busy website, explain how caching can improve its performance)

What is a reasonable web hosting configuration? Draw/picture a typical configuration. Give any two reasons why is it a reasonable configurations?

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