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The PDII Exam is divided into two parts: a multiple-choice exam and a programming assignment. The multiple-choice exam consists of 60 questions and lasts for two and a half hours. The programming assignment involves the development of a custom application using Salesforce technologies and must be completed within a specified time-frame.
Salesforce Platform Developer II Sample Questions (Q42-Q47):
NEW QUESTION # 42
A company recently deployed a Visualforce page with a custom controller that has a data grid of information about Opportunities in the org. Users report that they receive a "Maximum view state size limit" error message under certain conditions. According to Visualforce best practice, which three actions should the developer take to reduce the view state?
- A. Refine any SOQL queries to return only data relevant to the page.2021
- B. Use the final keyword in the controller for variables that will not change.1617
- C. Use the private keyword in the controller for variables.1415
- D. Use filters and pagination to reduce the amount of data.1819
- E. Use the transient keyword in the Apex controller for variables that do not maintain state.
Answer: A,D,E
Explanation:
24
The Visualforc25e View State holds the state of the page (including controller variables) between server requests. It has a strict limit of 135KB. When a page handles large sets of data, like a grid of Opportunities, the view state can easily exceed this limit.
* Transient Keyword (Option A): This is the most effective programmatic way to reduce view state.
Marking a variable as transient prevents it from being serialized into the view state. This should be used for any data that is only needed for the current request and does not need to be maintained during a postback (e.g., large lists of records retrieved for a single display).
* Filters and Pagination (Option D): By using a StandardSetController or custom offset logic, the developer can limit the number of records held in memory at any given time. Instead of loading 5,000 Opportunities, the page can load and store only 20 records per page.
* Refine SOQL Queries (Option E): Developers often query "all" fields (e.g., SELECT * equivalent) or include large text areas that aren't displayed. By selecting only the specific fields required for the grid, the size of each object in the collection is reduced, directly lowering the view state.
Option B and C (private and final) affect variable visibility and immutability but do not prevent the variables from being serialized into the view state.
NEW QUESTION # 43
A company manages information about their product offerings in custom objects named Catalog and Catalog Item. Catalog Item has a master-detail field to Catalog, and each Catalog may have as many as 100,000 Catalog Items.
Both custom objects have a CurrencylsoCode Text field that contains the currency code they should use. If a Catalog's CurrencylsoCode changes, all of its Catalog Items' CurrencylsoCodes should be changed as well.
What should a developer use to update the CurrencylsoCodes on the Catalog Items when the Catalog's CurrencylsoCode changes
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