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Salesforce CRT-450 Exam Practice Questions (P. 5)

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Question #41
The operation manager at a construction company uses a custom object called Machinery to manage the usage and maintenance of its cranes and other machinery. The manager wants to be able to assign machinery to different constructions jobs, and track the dates and costs associated with each job. More than one piece of machinery can be assigned to one construction job.
What should a developer do to meet these requirements?
  1. A
    Create a lookup field on the Construction Job object to the Machinery object.
  2. B
    Create a lookup field on the Machinery object to the Construction Job object.
  3. C
    Create a junction object with Master-Detail Relationship to both the Machinery object and the Construction Job object.
  4. D
    Create a Master-Detail Lookup on the Machinery object to the Construction Job object.

Correct Answer:
A

Question #42
Which two strategies should a developer use to avoid hitting governor limits when developing in a multi-tenant environment? (Choose two.)
  1. A
    Use collections to store all fields from a related object and not just minimally required fields.
  2. B
    Use methods from the ג€Limitsג€ class to monitor governor limits.
  3. C
    Use SOQL for loops to iterate data retrieved from queries that return a high number of rows.
  4. D
    Use variables within Apex classes to store large amounts of data.

Correct Answer:
BC

Question #43
Which set of roll-up types are available when creating a roll-up summary field?
  1. A
    COUNT, SUM, MIN, MAX
  2. B
    AVERAGE, SUM, MIN, MAX
  3. C
    SUM, MIN, MAX
  4. D
    AVRAGE, COUNT, SUM, MIN, MAX

Correct Answer:
A

Question #44
What is the result of the debug statements in testMethod3 when you create test data using testSetup in below code?

  1. A
    Account0.Phone=333-8781, Account1.Phone=333-8780
  2. B
    Account0.Phone=888-1515, Account1.Phone=999-2525
  3. C
    Account0.Phone=333-8780, Account1.Phone=333-8781
  4. D
    Account0.Phone=888-1515, Account1.Phone=999-1515

Correct Answer:
C

Question #45
Which three options allow a developer to use custom styling in a Visualforce page? (Choose three.)
  1. A
    <apex:stylesheet> tag
  2. B
    Inline CSS
  3. C
    <apex:style>tag
  4. D
    <apex:stylesheets>tag
  5. E
    A static resource

Correct Answer:
ABE

Question #46
A developer executes the following query in Apex to retrieve a list of contacts for each account:
List<account> accounts = [Select ID, Name, (Select ID, Name from Contacts) from Account] ;
Which two exceptions may occur when it executes? (Choose two.)
  1. A
    CPU limit exception due to the complexity of the query.
  2. B
    SOQL query row limit exception due to the number of contacts.
  3. C
    SOQL query limit exception due to the number of contacts.
  4. D
    SOQL query row limit exception due to the number of accounts.

Correct Answer:
CD

Question #47
Which three tools can deploy metadata to production? (Choose three.)
  1. A
    Change Set from Developer Org
  2. B
    Force.com IDE
  3. C
    Data Loader
  4. D
    Change Set from Sandbox
  5. E
    Metadata API

Correct Answer:
ADE

Question #48
A developer needs to display all of the available fields for an object.
In which two ways can the developer retrieve the available fields if the variable myObject represents the name of the object? (Choose two.)
  1. A
    Use myObject.sObjectType.getDescribe().fieldSet() to return a set of fields.
  2. B
    Use mySObject.myObject.fields.getMap() to return a map of fields.
  3. C
    Use Schema.describeSObjects(new String[]{myObject})[0].fields.getMap() to return a map of fields.
  4. D
    Use getGlobalDescribe().get(myObject).getDescribe().fields.getMap() to return a map of fields.

Correct Answer:
BC

Question #49
How should a developer avoid hitting the governor limits in test methods?
  1. A
    Use @TestVisible on methods that create records.
  2. B
    Use Test.loadData() to load data from a static resource.
  3. C
    Use @IsTest (SeeAllData=true) to use existing data.
  4. D
    Use Test.startTest() to reset governor limits.

Correct Answer:
D

Question #50
Which three declarative fields are correctly mapped to variable types in Apex? (Choose three.)
  1. A
    Number maps to Decimal.
  2. B
    Number maps to Integer.
  3. C
    TextArea maps to List of type String.
  4. D
    Date/Time maps to Dateline.
  5. E
    Checkbox maps to Boolean.

Correct Answer:
ADE

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