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Salesforce > PD1 Cert > Flashcards

PD1 Cert Flashcards

1
Q

“Control layer” in the MVC model?

A
  1. Visualforce Controllers
  2. Apex Custom Controllers
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2
Q

“My Domain” needs to be deployed if -→

A

Lightning components need to be used in Lightning tabs, Lightning Pages, as standalone apps, as actions and action overrides, or as custom lightning page templates

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3
Q

how to access a compound data type such as geolocation?

A

__s

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4
Q

“Application Events” vs “ Component Events”

A

Application Events -→ allow all components on a page, regardless of the containing component, to respond to an event

Component Events -→ can only be handled by components in the firing components containment hierarchey

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5
Q

Examples of Limits enforced by “Apex Runtime”

A
  • time executing a SOQL query
  • total number of records retrieved by SOQL queries
  • CPU time per transaction
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6
Q

ways to run a “Flow” automatically in the future?

A
  • replace the autolaunched flow with a schedule triggered flow
  • invoke the flow from an Apex job that runs weekly
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7
Q

what tool can be used to create a wizard like interface where details can be entered on one screen and a calculation displayed on the next screen ?

A

flow builder

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8
Q

Things that can be created using the lightning app builder?

A
  • custom home pages
  • custom record pages
  • single-page apps
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9
Q

most appropriate place to put functions that can be called by any Javascript code

A

Helper file

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10
Q

Helper File =

Component File=

Controller File =

Design File=

A

Helper File = most appropriate place to put functions that can be called by any Javascript code in a component bundle

Component File = contains the markup for the component

Controller File = contains functions that are typically called as a result of a browser or platform event

Design File = exposes attributes of the component that can be modified from an interface such as lighting app builder

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11
Q

events that are fired when an Aura component loads on a page

A
  • init
  • render
  • afterRender
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12
Q

What is a “Batch Apex Job”?

A

-logic that can be set to run at regular intervals and perform the required logic

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13
Q

Characteristics of a multi-tenant environment in context of platform upgrades

A
  • salesforce upgrades are automatic
  • sandboxes are upgraded prior to production environments so that the changes can be previewed and tested
  • all customizations are specified as metadata, allowing for easy upgrades
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14
Q

indirect lookup relationship?

A

links a child external object to a parent standard or custom object

*

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15
Q

components that if a field is referenced, the reference should be deleted or updated first before the field can be deleted

A
  • apex class
  • apex trigger
  • visualforce page
  • visualforce component

workflow rule

  • field update
  • criteria based sharing rule
  • flow
  • jobs
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16
Q

how to improve the speed of “Schema Builder” tool

A
  • the map can be used to navigate objects of interest
  • if the “hide relationships” option is selected, performance is improved
  • the filter can be used to only display objects of interest
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17
Q

What should be used to create ‘Scratch Orgs’?

A

Salesforce CLI

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18
Q

Characteristics of @InvocableMethod

A
  • must be declared as static
  • only one method can be defined per Apex Class
  • method can be declared as public or global
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19
Q

how should a developer write unit tests for a private method in an Apex Class?

A

use the “@Test Visible” annotation

@TestVisible -→ annotation allows test methods to access private or protected members of another class outside the test class (members include methods, member variables, and inner classes)

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20
Q

what should a developer do to check the code coverage of a class after running all tests?

A

view the Overall Code Coverage panel of the Tests tab in the developer console

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21
Q

Characteristics of “ChangeSet Deployments”

A

Change set -→ can be used to send customizations from one Salesforce org to another

  • Changesets can only be used between related organizations
  • deployment is done in a one-way, single transaction
  • sending a changes between two orgs requires a deployment connection
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22
Q

Scratch org

A

salesforce environment that can be easily created to support agile development and continuous integration

*Salesforce CLI is used to manage and create scratch orgs

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23
Q

What should a developer use to fix a lightning web component bug in a sandbox?

A

VS code

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24
Q

define “Bulk API”

A

provides a programmatic option to asynchronously upload, query, or delete large data sets in your Salesforce org

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25
Q

random APEX characteristics:

A
  • classes are final by default
  • top-level class can only have one inner class level
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26
Q

Valid “External ID” data types/fields

A
  • number
  • text
  • email
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27
Q

Characteristics of Debug Logs

A
  • the amount of information logged in the debug log can be controlled by the “log level”
  • to view Debug logs, “Manage Users” or “View All Data” permission is needed
  • Debug log levels are cumulative, where FINE log level includes all events logged at the DEBUG, INFO, WARN, and ERROR fields

(NONE-→ERROR-→WARN-→INFO-→DEBUG-→FINE-→FINER-→FINEST)

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28
Q

which three data types can a SOQL query return?

A
  • integer
  • sObject
  • List
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29
Q

how to use “External ID” to relate records:

A

-add related records by using a custom External ID field on the parent record

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30
Q

if you have more than one trigger that is defined on an object for the same event, can the order of execution be guaranteed?

A

NO, order of Execution cannot be guaranteed in this scenario

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31
Q

how does the lightning component framework help developers implement solutions faster?

A

by providing device awareness for mobile and desktops

**keyword in the question was Lightning Component Framework

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32
Q

what is the purpose of Unit Tests (using the @isTest functionality)

A

verifying whether a particular piece of code is working properly

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33
Q

Getter & Setter method characteristics:

A
  • Getter methods return values from a controller. Every value that is calculated by a controller and displayed on a page must have a corresponding getter method, including any Boolean variables
  • Setter methods pass user-specified values from page markup to a controller. Any setter methods in a controller are automatically executed before any action methods
  • getter method is always required to access values from a controller, setter method is not always necessary to pass values into a controller
  • no guaranteed order in which Apex methods (such as getter, setter) and variables are processed by a controller extension
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34
Q

characteristics in regards to governor limits of a execute() method of an Apex class the implements Batchable Interface

A
  • the apex governor limits are reset for each iteration of the execute() method
  • the apex governor limits might be higher due to the asynchronous nature of the transaction
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35
Q

operations that can be performed using a formula field?

A
  • displaying an image based on the opportunity amount
  • calcualting a score on a lead based on the information from another field
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36
Q

what do we use Apex Getter and Setter methods for?

A

when we want to refer to Apex class variables in a Visualforce page

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37
Q

which tools run a script that “deploys” to a sandbox?

A
  • VSCode
  • SFDX CLI
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38
Q

which tools run a script that “deploys” to a sandbox?

A
  • VSCode
  • SFDX CLI
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39
Q

max recursive trigger stack depth? (governor limits)

A

16 stacks

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40
Q

what tools can you use for custom user interfaces in Salesforce Classic vs Lightning?

A

Salesforce Classic -→ Visualforce page

Lightning -→ Lightning Component or Visualforce page (obviously lightning component is the preference)

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41
Q

phases in the Salesforce Aura Application Event propagation framework?

A
  • Capture
  • Bubble
  • Default
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42
Q

where to find information about the status of batch or future events?

A
  • Apex Flex Queue
  • Apex Jobs
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43
Q

what to remember when debugging a database.insert() exception?

A

database.insert() has a return type of “SaveResult” that can be used for debugging

44
Q

what happens when you try to assign a list variable to something that is not a list variable?

A

exception

45
Q

Formula’s characteristics:

A
  • formulas can reference values in related objects
  • formulas are calculated at runtime and are not stored in the database
46
Q

ways to ensure field-level security is applied while using Apex?

A
  • .stripInaccessible (****preferred)
  • WITH SECURITY_ENFORCED clause on SOQL
  • describefieldresult class and its method inAccessible
47
Q

in a SOQL query if you don’t generate/create an aggregate function an alias, what does the alias become

A

expri

*where i denotes the order of the aggregated files with no explicit alias, i starts at 0

*aggregate functions -→ AVG(),SUM(),MAX(),MIN(),COUNT(),COUNT_DISTINCT()

48
Q

steps that allow a custom SVG to be included in a Lightning web Component?

A
  • Reference the getter in the HTML template
  • import the static resource and provide a getter for it in Javascript
  • upload the SVG as a static resource
49
Q

which annotation exposes an Apex class as a RESTful web service?

A

@RestResource

50
Q

Trigger “Best Practices” in Salesforce?

A
  • one trigger per object
  • context-specific handler methods (or helper classes)
  • bulkify your code
51
Q

techniques to prevent SOQL “injection”

A

-String.escapeSingleQuotes()

-static queries with Bind variables

  • type casting
  • replacing characters
  • allowlisting
52
Q

Test coverage standards:

A

-75% code coverage on Apex classes

-1% code coverage on Apex triggers(atleast one line of code for your trigger)

-75% code coverage across org(classes & triggers combined)

53
Q

Governor Limits:

A
  • 100 synchronous SOQL queries / 200 asynchronous SOQL queries
  • 150 DML statements
  • 20 SOSL queries (search terms)
  • 50000 records (retrieved by SOQL queries)
  • 10000 records (using Database. class functionality)
  • 2000 records (number of records retrieved by a single SOQL query)
  • 16 (recursive stack depth)
  • 100 HTTP callouts in a transaction
54
Q

three lines of code required to create a Lightning component on a Visualforce page?

A

$Lightning.createComponent

$Lightning.use

55
Q

security consideration in regards to using Lightning Data Service?

A

-lightning data service handles sharing rules and field-level security

56
Q

which tool should a developer use to troubleshoot the causes of performance issues when a custom page loads in their org?

A

Developer console

57
Q

Characteristics for Aura component events?

A
  • event propagates to every owner in the containment heirarchey
  • if a container component needs to handle a component event, add a handleFacets=”true” attribute to its handler
58
Q

relationship queries use ? (related objects)

A

__r

*child object is plural

59
Q

sharing access to a junction object record is -→

A

determined by a user’s sharing access to both associated master records

60
Q

how to specify mock responses in Testing HTTP Callouts in Apex?

A
  • by implementing the HttpCalloutMock interface (*preferred)
  • by using static resources with StaticResourceCalloutMock
61
Q

how to use Callouts in triggers?

A

invoke callouts from triggers by encapsulating the callouts in @future methods

*Move the callout to an asynchronous method with @future(callout=true) annotation

62
Q

what tool should you use to prevent a user from editing a field on a record after certain criteria are met?

A

validation rule

63
Q

how can a developer check the test coverage of active process builder and flows before deploying them in a change set?

A

use SOQL and the Tooling API

64
Q

things that present a security vulnerability on Visualforce pages and/or controllers?

A

-setting escape =”false”

*escape should be set =“true”

65
Q

which three items can a trace flag be configured for?

A
  • Apex Class
  • Apex Trigger
  • User
66
Q

characteristics of exposing the Lightning Web Components?

A
  • IsExposed() attribute set to true on the XML file
  • specify the Target where the component can be added(such as a lightning page)
67
Q

what type of method can be called from a Flow?

A

@InvocableMethod

68
Q

what should a developer use to script the deployment and unit test execution as part of continuous Integration?

A

Salesforce CLI

69
Q

some operations that can affect the number of times a trigger can fire?

A
  • workflow rules
  • flows
  • roll-up summary fields
70
Q

Execute Anonymous Block basic definition :

A

where Apex code can be ran that doesn’t get stored as metadata, but that can be compiled and executed

71
Q

what does the Lightning Component Framework provide to developers?

A

prebuilt components that can be reused

72
Q

which sandbox type supports performance testing, load testing, and staging?

A

Full Sandbox

73
Q

how should a custom user interface be provided when a user edits an Account in Lightning Experience?

A

Override the accounts edit button with a Lightning Component

74
Q

to use @wire to call an Apex method -→

A

annotate method with @AuraEnabled(cacheable=true)

*method must be static, global, or public

75
Q

which Visualforce feature supports a list button that will display a Visualforce page that allows users to edit multiple records?

A

RecordSetVar attribute

76
Q

3 ways for a developer to execute tests in an org?

A
  • setup menu
  • tooling API
  • Salesforce DX
77
Q

how to monitor the progress of a Queueable Apex job?

A
  • Apex jobs page
  • query the AsyncApexJob object
78
Q

benefits of using declarative customizations over code?

A
  • generally require less maintenance
  • automatically update with each salesforce release
  • have more flexibility related to limits (not that they have different limits than code)
79
Q

if a class doesn’t DECLARE with sharing or without sharing -→

A

sharing is inherited

80
Q

which sfdc commands can be used to add testing data to a Developer Sandbox?

A
  • Force:data:bulk:upsert
  • Force:data:tree:import
81
Q

Resources in an Aura component that can contain Javascript functions?

A
  • Renderer
  • Controller
  • Helper
82
Q

characteristics of Custom Exceptions in Apex?

A
  • class name must end with ‘Exception’
  • custom exception class must extend the system Exception class
  • class can implement one or many interfaces
83
Q

when testing using existing data in for example a sandbox for testing using (@isTest(SeeAllData=True)) what might happen?

A

test may FAIL in the Test Framework because your using existing data

84
Q

best practices when it comes to Aura component and application event handling?

A
  • reuse the event logic in a component bundle, by putting the logic in the helper
  • handle low-level events in the event handler and re-fire them as higher-level events
85
Q

which two settings must be defined in order to update a record of a junction object?

A
  • read/write access on the primary relationship
  • read/write access on the secondary relationship
86
Q

enforcing object and field-level permissions

A

look for “Schema” keyword and

isUpdateable() -→ updating context

isCreateable() -→ creating context

isAccessible() -→ check permissions context

isDeletable() -→ deleting context

87
Q

field data types that can be External Id

A
  • number
  • text
  • email
88
Q

capabilities of the <1tng:require> tag when loading Javascript resources in Aura Components?

A
  • specifying loading order
  • one-time loading for duplicate scripts
  • loading scripts in parallel
89
Q

which salesforce feature allows a developer to see when a user last logged in to Salesforce if real-time notification is not required?

A

Event Monitoring Log

90
Q

master-detail field from _______ to _______

A

master-detail field from child to parent

91
Q

when using Salesforce Dx, what does a developer need to enable to create manage scratch orgs?

A

Dev Hub

92
Q

the Enhance Element from Einstein Best Action Returns a ____

A

list of recommendations -→ List>

*must be called with an @InvocableMethod

93
Q

what are two advantages of implementing the view layer of a Salesforce application using Lightning Web Component based development over Visualforce?

A
  • rich component ecosystem
  • self-contained and reusable units of an application
94
Q

how to back up all of the data and attachments in the Salesforce org once a month?

A

Data Export Scheduled job

95
Q

code that displays the contents of a Visualforce page as a PDF

A

apex:page renderAs=”pdf:

96
Q

example of class the implement a custom SOAP Web Service

A

global class Webservice Class{

private Boolean helperMethod(){/*implementation…*/}

webservice static String updateRecords(){/*implementation…*/}

97
Q

to embed a flow in your Aura Component, add the

A

lightning:flow component to it

98
Q

benefits of developing applications in a multi-tenant environment?

A

enforced best practices for development

99
Q

Apex Interface characteristics:

A
  • method implementation can be defined within the apex interface
  • apex class must be declared using the interface keyword
  • a method defined in an Apex Interface cannot have an access modifier
100
Q

Salesforce resources that can be accessed from a Lightning Web Component

A
  • static resources
  • SVG resources
  • Content asset files
101
Q

which module provides access to methods for subscribing to a streaming channel and listening to event messages

A

lighting/empApi

102
Q

how to find a users “default” record type?

A

Opportunity.SObjectType.getDescribe().getRecordTypeInfos()

*iterate thought them until isDefaultRecordTypeMapping() = true

103
Q

standard apex:page configuration attributes

A

standardController

extensions

action

104
Q

name some asynchronous tools

A
  • batchable
  • queuable
  • Bulk API
105
Q

Virtual keyword

A

provide the derived classes with the option of overriding them

Salesforce (8 decks)

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