Interview Questions

what are queus in sfdc?
Queues allow groups of users to manage a shared workload more effectively. A queue is a location where records can be routed to await processing by a group member. The records remain in the queue until a user accepts them for processing or they are transferred to another queue. You can specify the set of objects that are supported by each queue, as well as the set of users that are allowed to retrieve records from the queue.
How does salesforce calculate the value of formula field?
A formula is similar to an equation that is executed at run time. Depending on the context of the formula, it can make use of various data and operations to perform the calculation. A useful way to think about formulas is that they are similar to formulas on a spreadsheet. These formulas can make use of data and operations to calculate a new value of some type.

Formulas are widely used in the Force.com platform and should be considered first before jumping into Apex Code. The same formula syntax can be used to create default values, data validation rules, custom field formulas, conditional logic on Visualforce pages, and rules for determining when certain actions should occur, such as workflow actions.

for more details :- http://wiki.developerforce.com/page/An_Introduction_to_Formulas

How do I create a report to display all leads with no scheduled activities?
Use the filter as Last activity not equal to last 90 days

Display a field based on Picklist value selected?

scenario
:I am creating a Visualforce page and have a picklist called Brand that has as one value "Other"

When the value "Other" is selected, I want the UI to display the field "Other Brand" so that they can input the text value.

How do I set-up this dependency in the UI?

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