Platform Developer I Certification Maintenance (Winter ’19)
Q-1 Which method of the DescribeSObjectResult class allows you to access record types by their developer name? ANS:
getRecordTypeInfosByDeveloperName()
Q-2 Which Apex class includes new methods to verify digital and HMAC signatures? ANS:- System.Crypto
Q-3 Your org has My Domain enabled. What is the most efficient method to obtain a valid session ID to make an HTTP callout from asynchronous Apex code to Salesforce APIs? ANS:-
Use System.UserInfo.getSessionId().
Q-4Which annotation allows a developer to make the result of an Apex method storable for Lightning components?ANS:-
@AuraEnabled(cacheable=true)
Q-5
$Page.IFrameResource
Q-5: Prior to installing an unlocked package, which object should a developer query using the Tooling API to list the packages it depends on? ANS:- SubscriberPackageVersion
TowerMapUtilClass
public inherited sharing class TowerMapUtilClass {
public static List queryObjects(String theObject, List theFields, String theFilter, String sortField, String sortOrder) {
String theQuery = 'SELECT ' + string.join(theFields, ',');
theQuery += ' FROM ' + theObject;
if(!String.isEmpty(theFilter)) {
theQuery += ' WHERE ' + theFilter;
}
if(!String.isEmpty(sortField)) {
theQuery += ' ORDER BY ' + sortField;
if(!String.isEmpty(sortOrder)) {
theQuery += ' ' + sortOrder;
}
}
return database.query(theQuery);
}
}
TowerMapControllerClass.apxc
public inherited sharing class TowerMapControllerClass {
@AuraEnabled
public static List getAllTowers() {
String theObject = 'Tower__c';
List theFields = new List{'Id', 'Name', 'State__r.Name', 'Tower_Location__Latitude__s', 'Tower_Location__Longitude__s'};
String theFilter = '';
String sortField = 'Name';
String sortOrder = 'ASC';
List allTowers = TowerMapUtilClass.queryObjects(theObject, theFields, theFilter, sortField, sortOrder);
return allTowers;
}
}
Add below code
Towermap.cmp
<lightning:map
mapMarkers="{! v.mapMarkers }"
markersTitle = "{!v.markersTitle}"
zoomLevel="5" />
Write a trigger after update on account object
trigger AccountTrigger on Account (after insert,before insert,after update) {
if(Trigger.IsAfter && Trigger.IsUpdate){
set accountSetID=new set();
for(Account AccountDetail:Trigger.new){
system.debug('Account Name'+AccountDetail.Name);
system.debug('AccountDetail.id'+AccountDetail.id);
accountSetID.add(AccountDetail.id);//Store ALl Account ID in Set
}
system.debug('accountSetID'+accountSetID.size());
List contactList=[SELECT LastName,FirstName FROM Contact WHERE ACCOUNTID=:accountSetID];//All Contacts
for(Contact ContactDetail:contactList){
ContactDetail.FirstName='IBM'+ ContactDetail.FirstName;
}
system.debug('contactList'+contactList.size());
system.debug('Contact Name'+contactList[0].FirstName);
update contactList;
}
}
Write Trigger for before Insert on account object
trigger AccountTrigger on Account (after insert,before insert,after update) {
If(Trigger.IsBefore){
for(Account AccountDetail:Trigger.New){
If(AccountDetail.Type=='Prospect'){
AccountDetail.AnnualRevenue=5;//Update AnnualRevenue
}
}
}
Create a validation rule to check that a contact is in the zip code of its account
AND(
NOT(ISBLANK(AccountId)),
MailingPostalCode <> Account.ShippingPostalCode
)
Administrator Certification Maintenance (Winter ’19)
- On which object can users assign a new owner to multiple records at one time from a Lightning Experience list view? ANS: Lead
- How can a user place the cursor in the list view search field without navigating to it with the tab button or the cursor? ANS:
Keyboard shortcut g+f - Which Forecast Type should the System Administrator configure to make territory forecasts available to the sales team?ANS:
Opportunity Revenue by Territory - How many decimal places can the user choose to display when creating a dashboard component?ANS:
Up to 5 - What will display in the search results when a user uses the quick search on the reports tab?ANS:
The reports or folders displayed are based on what is selected on the side menu - What has to be enabled to allow users to save Chatter posts before they appear in the feed?ANS: Allow draft posts.
- How can a standard user adjust the page layout to display more fields in the same amount of space?ANS: Change the density from comfy to compact.
- The customer community manager wants to gamify the community by recognizing members’ specific accomplishments. What can the System Administrator configure to accomplish this goal?ANS:Recognition Badges
How to Reverse an Array
The reverse() method reverses the elements in an array.
Syntax:arrayName.reverse()
Example:-
var programming = ["c#", "c","java","apex"]; var programmingReverseOrder = programming.reverse(); alert(programmingReverseOrder);
it will be print like
apex,java,c,c#
How to join or combine two arrays to one array?
JavaScript Array concat() Method
it returns combine of records from two arrays.
Example:-
var programming = ["c#", "c","java","apex"]; var dataBaseRelated = ["SQL", "SOQL", "MySQL"]; var application = programming.concat(dataBaseRelated); alert(application);
It will print like this
c#,c,java,apex,SQL,SOQL,MySQL
How to get size of items in an array?
JavaScript Array length Property
length:it returns size(no.of items ) of an array
Example:-
var languageArray=['c#','c','java']; //its diplay like c#,c,java alert(languageArray); //remove last item using pop method var arraylength=languageArray.length; alert(arraylength);
//it will print 3(no of items in languageArray is 3)
How to remove last item to an array?
JavaScript Array Pop() Method
Pop(): it helps to remove last item(element) from an array and returns the final array.
Example:-
var languageArray=['c#','c','java']; //its diplay like c#,c,java alert(languageArray); //remove last item using pop method languageArray.pop(); alert(languageArray);
//it will print c#,c,java
How to append item to an array?
JavaScript Array push() Method
Push():-Its helps to add a new item at the end of the array.use the push() method/function to append an array
Example:-
//Array of programing language
var languageArray=['c#','c','java'];
//its diplay like c#,c,java
alert(languageArray);
//Append new value to the array
languageArray.push('salesforce');
alert(languageArray);
//it will print c,c#,java,Salesforce
Note: You also push object type in an array its depend upon your requirement.