HOTSPOT
You develop a webpage that consumes a web service. The web service provides currency exchange rates.
Visitors enter the currency type on the webpage and press the Submit button.
The web service returns the current exchange rate.
You need to ensure that the webpage always displays the most current information.
How should you complete the relevant code? (To answer, select the appropriate option from each drop-down
list in the answer area.)
Hot Area:
Answer: 
Explanation:
Use ajax technology (json is for the datatype).
Disable the cache as the most recent data must be displayed.