70-305 Developing and Implementing Web Applications with Microsoft Visual Basic.NET
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Demo Question 19.
You work as the Web developer at EliteCertify.com. You are writing code for an ASP.NET page which will be used to pass vouchers for various gyms to users. A user must first specify a country and then choose a city from a list of cities in their designated country. After this, the names and street addresses of gyms in their city will be shown to the user. The list of countries, cities, and gym names and addresses are stored in a database table. You want to reduce the time it takes to retrieve and display the list of gym names after a user chooses the country and city. What should you do next?
A. Change the connection string to add the packet size property and set its values to 8192.
B. Add this directive to your page: OutputCache VaryByControl="country;city"
C. Change the connection string to maintain your database's connection pool as small as possible.
D. Add this directive to your page: OutputCache VaryByParam="city"
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Answer: D
You can vary user control output to the cache by specifying the user control name and the parameter. We
use the VaryByParam attribute of the @ OutputCache
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