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------------------------------------------------ Suppose a user goes to site abc.com and sets some session variables using several pages. Then, the user goes to yahoo.com and sets different session variables within yahoo.com. If the user returns to abc.com after 2 hours, will the user's session variables likely still exist? Why or why not?

When a user visits a website, session variables are used to store and track information specific to that user's session. In this scenario, the user sets session variables on abc.com and yaho0.com. However, when the user returns to abc.com after 2 hours, the session variables are unlikely to still exist.

The reason is that session variables are typically stored on the server, and the server will often have a timeout period for inactive sessions. If the user does not interact with abc.com for a certain amount of time, the server may delete the session variables to free up resources.

So, in this case, after 2 hours of inactivity on abc.com, the user's session variables are likely to be deleted, and the user will need to set them again.

Learn more about Session Variables here:

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