SALESFORCE INTERVIEW PREPARATION - Part 2

SALESFORCE INTERVIEW PREPARATION

Q.1 How many profiles one user can have in Salesforce ?

• In Salesforce, One user can have only one profile in Salesforce.

Q.2 Does creation of user consumes licence in Salesforce ?  

• Yes, Creation of user consumes a licence in salesforce.

Q.3 What is profile and role ?

• A profile doesn't show Hierarchical structure, Whereas role shows hierarchical structure.
• A profile is object level and field level access and it is mandatory for all users whereas a role is a record level access and it is not mandatory for all users.

Q.4 What do you mean by login IP ranges security and login hours security ? 

• IP ranges security is all about providing access to the users by setting a particular IP address for Salesforce Org.
• Login hours security is just like operating hours It defines, At what time users can login in Salesforce Org.

Q.5 What is sharing rule ?

• The sharing rules are applied when a user wishes to allow access to other users.

Q.6 What is the difference between sharing rules & manual sharing ?

• You can manually share account records by adding a user as an account team member or using the add button after clicking the sharing button at the top of page layout.
• Use of Add button to manually allow other users to read-only or read/write access.
• Sharing rules are implemented by the system administrator.
• You can grant access to a public group, roles and subordinates and portal roles.
• You can set up sharing rules to share read-only or read/write.
• Your Org wide default sharing rules give access to related objects.

Q.7 What is permission set ?

• Permission set can provide additional access to users (belonging to the same or different profile).
• The accessibility of the user is determined by the combined effect of permission sets assigned to it.

Q.8 Explain the use of Visual Flows ?

• It can create wizard interfaces.
• It can call email alerts on click of a button.
• It can submit a record for the approval process.
• It can call quick action of salesforce one.

Q.9 What is Salesforce 1 ?

• Salesforce 1 is a mobile architecture of Salesforce (for mobile apps).
• Features :
• Compact layout.
• Object-specific actions.
• Global actions.
• Global publisher layout.

Q.10 What are the different type of audit salesforce ? 

• Audit in salesforce is useful for gaining information or for tracking all the recent setup changes that the administrator has done in the organization.
• The audit trail can preserve up to 6 months old data.
• Types-> Data audit (History Tracking), Metadata (Audit Trail), System flow Audit (Debug logs).

Q.11 What is the difference between SOQL and SOSL ?

• SOQL is Salesforce Object Query Language.
• SOSL is Salesforce Object Search Language.
• SOQL is used as just like SQL for a database query.
• SOQL is used as a search bar or to search result finder just like google search bar.

Q.12 Why APEX is different than JAVA ?

• Apex runs in a multi-tenant environment and is very controlled in its invocations and governor limits.
• Apex is on demand and It is compiled and executed on cloud-based systems.
• Apex is not a general-purpose programming language used for specific business logic functions.
• Apex requires unit testing for deployement into a production environment (minimum 75% code coverage is a must).

Q.13 Which collection sets are supported by apex in salesforce ?

• Salesforce supports 3 types of collection sets : 1.List, 2.Map, 3.Set.
• A list is an ordered collection of elements that are distinguished by their indices.
• A Map is a collection of key-value pair, Where each unique key maps to a single value. Keys and values can be of any data types with built-in Apex supported types.
• A Set is an unordered collection of elements that do not contain any duplicates. Set elements can be of any type - primitive types, collections Subjects, user-defined types and built-in apex types.

Q.14 What is Sobject in salesforce ?

• A Sobject is an object that can be stored in the Force.com platform database.
• They are representation data that has or will be persisted.
• Sobject is a generic abstract type that corresponds to any persisted object type.

Q.15 What is the diffrence between a role and profile ?

• Profile mandatory features that can be added to a user record in a salesforce.
• Roles are optionally added while profile is a basic requirement of setting up a user.
• Profile help to control object privileges such as CRED (Create Read Edit Delete).They also contain system permissions that a user can carry out such as exploring data.
• Roles on the other hand, help with sharing records across an organization they work in a hierarchical fashion giving users access to records that are owned by people lower down in the hierarchy.

Q.16 Where is SOQL used in salesforce ?

• SOQL stands for salesforce object query language.
• It is specially designed for salesforce database and It is used to query the Salesforce platform to retrieve data.
• It is used within Apex and Visualforce to return set of data.

Q.17 What is the difference between Salesforce.com and Force.com ?

• Salesforce.com is SaaS (Software as a service) product.
• While force.com is a PaaS (Platform as a service) platform.
• Salesforce.com has a selection of pre-packed solutions such as the sales & service cloud that are designed for a specific purpose.
• While force.com allows you to build your own applications.
• Salesforce.com is built on Force.com platform.

Q.18 What are the options available to you for deploying data from sandbox to production ?

• There are various ways to deploy data from sandbox to production in salesforce.
• The main way is to use salesforce in-built feature called Change Sets. This allows you to package up components and then deploy them to another Salesforce Org.
• There are various other methods available for deployment i.e. ANT migration tool, Force.com IDE and Unmanaged packages.

Q.19 How bucket fields used in salesforce ?

• Bucket fields are used to hide the important information or set of data on a report and treat that data in other fields as with different name.
• Bucket fields can be used in salesforce reports to group together field values as well.
• These fields are not created on the Salesforce platform and only exist in the report itself.

Q.20 What is Apex ?

• Apex is strongly typed object-oriented programming language that allows developers to extends the Salesforce platform by writing their own bossiness logic into the platform.
• Apex looks like a Java by syntax and can be launched through veriety user-initiated events such as record update, button clicks, triggers on Objects or external web service required.

Q.21 Can you customize Apex & visualforce directly in a production Org?

• Apex cannot be customized in a production Org.
• It must be changed and deployed through a sandbox and meet test coverage criteria.
• Visualforce, on the other hand, may be customized directly in production (Although this is not the best practice).

Q.22 What are the two types of Apex triggers can run in salesforce ?

• Apex trigger can either run before a record has been saved or after.
• Before operations is usually used to verify information that is going to be inserted and after a trigger is used to access data that has previously been entered by a user or system.

Q.23 When you will use apex over workflow rules or process builder ?

• There are various reasons why you should use apex over declarative options.
• Workflow rules and process builder operations sometimes have features limitations that can be overcome with apex.
• For example, pulling information from an external system.
• When dealing with certain or large sets of data, Apex can be more efficient than declarative options due to fewer limitations.

Q.24 How many ways you can make a field required ?

• There are two ways to make a field required in Salesforce :
• 1. Field level: while creating a field.
• 2. Page layout level: From page layout when you double click on a field and then you will get a required option.

Q.25 What are the types of reports available in salesforce ?

• 1. Tabular report
• 2. Summary report - 3 levels can be created
• 3. Matrix report - 2 levels (axis)can be created
• 4. Joined report

Q.26 How you can calculate a sum of all values in report ?

• We will use the summarize field to calculate sum, avarage, max, min.

Q.27 What are the different types of bucket field ?

• There are three types of bucket field
• 1. Number Bucket Field
• 2. Text Bucket Field
• 3. Picklist Bucket Field

Q.28 What is folder security in salesforce ?

• This will decide the accessibility of that report folder.
• This option is available in sharing option in reports.
• Which can be shared with Users, Role and subordinates and public group.
• Access options are a viewer, editor and manager (high access).

Q.29 What kind of report is used for the dashboard in salesforce ?

• Only summary and matrix report can be used to generate dashboards.

Q.30 What is the use of reporting snapshots ?

• Reporting snapshots are used for trend analysis.
• By collecting the data and on the basis of that future prediction can be done.
• It is also called as analytical snapshots.

Q.31 ** Explain Order of execution in salesforce ? or what will happen when you click on the save button ?

• 1. Loads original record from database /initialises for upsert.
• 2. Older values are overridden.
• 3. System validation rule (layout specific rule / field formats / maximum length).
• 4. Apex before trigger.
• 5. Custom validation rules.
• 6. Records saved to the database (not committed).
• 7. Records reloaded from the database.
• 8. Apex after triggers.
• 9. Assignment rules.
• 10. Auto response rules.
• 11. Workflow rule.
• 12. Escalation rules.
• 13. Roll-up summary formula updated.
• 14. Executes criteria-based sharing.
• 15. Database committed.
• 16. Post-commit logic (sending emails etc.).

Q.32 When triggers are not executed ?

• In case of cascading delete operations.
• Cascading updates of child records that are re-parented as a result of a merge operation.
• Modifying custom field data types.
• Renaming or replacing picklists.

Q.33 Explain what is trigger.new and trigger.old ?

• Trigger.new :  if you want to perform some action on new version of sobject records.
• Note that this is object list is only available in insert and update triggers, and the records can only be modified in before Trigger.
• Trigger.old :  if you want to perform some action on old version of the Sobject records.
• Note that object list is only available in an update and delete Trigger.
• Delete supports the only trigger.old as we can only access the old records.
• Insert supports the only trigger.new. 
• Update supports only trigger.old and trigger.new.

Q.34  Difference between visualforce and action support ?

• Visualforce is a component-based custom user interface enables the creation of dynamic, reusable interfaces.
• Which is designed to simplify the development and development of cloud applications and websites hosted on force.com.
• Visualforce Framework includes tag-based markup languages, similar to HTML.
• Action support: action support component adds ajax support to other components in visualforce it allows a component to be refreshed asynchronously by calling the controller method when an event occurs like click on a button.
• It allows us to do partial page refresh asynchronously without refreshing full page
• For example :

<apex:actionsupport event="onclick" action="{!increamentCounter}"/>

• It adds the ajax request to the visualforce page and then calls the controller.
• For example: if we want to call the override method then we will go for action support because we cannot get any event for this.

Q.35 How to identify the duplicate record in salesforce ?

• In salesforce to identify a duplicate record, we use matching rules.
• By using matching rules we can compare field value to determine whether a record is similar enough to be considered as a duplicate.
• For example, A matching rule can specify that if the email phone values of two records match exactly, the records might be duplicates.
• Use matching rules with duplicate rules to define what happens when duplicates are identified.

Q.36 How profiles you have created in salesforce ?

• System Administrator
• Standard User
• Read Only
• Marketing User
• Partner User
• Solution Manager

Q.37 What is evolution criteria available in workflow ?

• There are three evolution criteria in a workflow :
• Created: Evaluate the rule criteria when each time a record is created. If the rule criteria are met, run the rule. Ignore all updates to existing records.
• With this option, the rule never runs more than once per record.
• Created and every time it's edited: Evaluates the rule criteria each time a record is created or updated If the rule criteria are met, run the rule.
• With this option, the rule repeatedly runs every time a record is edited as long as the record meets the rule criteria.
• Note: If you select this option, you can't add time-dependent actions to the rule.
• Created and any time it's edited to subsequently meet criteria: (default) Evaluate the rule criteria each time a record is created or updated.
• For a new record, run the rule if the rule criteria are met.
• For an updated record, run the rule only if the record is changed from not meeting.
• With this option, the rule can run multiple times per record, but it won't run when the record edits are unrelated to the rule criteria.
• Note: This rule runs if the record is changed from not meeting the rule criteria to meeting rule criteria.

Q.38 What is the significance of an actionfunction in Visualforce ?

• action function <apex: actionfunction> are used basically to call apex methods using javaScript element (this is the base functionality of AJAX).

Q.39 What is the significance of actionSupport in Visualforce ?

• action support <apex: actionsupport> is used basically to provide AJAX functionality or to support AJAX.
• Allowing component to be refreshed asynchronously by a server when a particular event occurs.

Q.40 What is the use of rerendered in salesforce?

• Rerendered is used to refresh the particular section (AJAX) in a visualforce page. (accepts id which you want to refresh).

Q.41 What is the use of rendered ?

• Renderedis for visibility i.e. value 'true' or 'false'.
• rendered = True (visible)/False (invisible).

Q.42 What is difference extension controller and list controller ?

• Extension controller is used to overriding the standard functionality.
• Whereas list controller is not used to overriding something as there is no Apex code involved.
• List controller is used to having standard pagination (i.e. you want to have particular records per page).
• Extension controller is not used for standard pagination.

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