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Exam Oracle Application Development Framework 12c Essentials
Number 1z0-419
File Name Oracle.1z0-419.CertKiller.2018-11-27.53q.vcex
Size 1 MB
Posted Nov 27, 2018
Download Oracle.1z0-419.CertKiller.2018-11-27.53q.vcex

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Demo Questions

Question 1

Which three statements are true about the default value for an entity object attribute? (Choose three.)


  1. It can be a literal value. 
  2. It can be defined by a Groovy expression.
  3. It can be defined by a SQL select statement.
  4. It can be defined by an Expression Language (EL) statement.
  5. It can be defined by referencing a database stored procedure.
Correct answer: ABD
Explanation:
A: The Value field (in the Edit Attribute dialog) allows you to specify a static default value for the attribute when the Value Type is set to Literal. For example, you can set the default value of the ServiceRequest entity object's Status attribute to Open, or set the default value of the User entity object's UserRole attribute to user. B: You can use a Groovy expression to define a default value for an attribute. This approach is useful if you want to be able to change default values at runtime.D: Groovy scripting logic is similar to Expression Language (EL)References: http://docs.oracle.com/cd/E15586_01/web.1111/b31974/bcentities.htm#BABFBJAI
A: The Value field (in the Edit Attribute dialog) allows you to specify a static default value for the attribute when the Value Type is set to Literal. For example, you can set the default value of the ServiceRequest entity object's Status attribute to Open, or set the default value of the User entity object's UserRole attribute to user. 
B: You can use a Groovy expression to define a default value for an attribute. This approach is useful if you want to be able to change default values at runtime.
D: Groovy scripting logic is similar to Expression Language (EL)
References: http://docs.oracle.com/cd/E15586_01/web.1111/b31974/bcentities.htm#BABFBJAI



Question 2

A backing bean for a page must hold its value over multiple requests for the current user. Which three bean scopes are applicable? (Choose three.)


  1. requestScope
  2. backingBeanScope
  3. viewScope 
  4. pageFlowScope
  5. sessionScope
  6. applicationScope
Correct answer: CDE
Explanation:
C: View scope: The object is available until the view ID for the current view activity changes. This becomes handy when you use partial page rendering. If you have a dependent list box, you might send a server request to refresh the list box. When a response is returned, the request scope will be gone but the view scope will be still there. D: A pageFlow scope exists for each task flow instance and has a lifespan between request and session scope. The lifetime of the scope spans across all pages in a bounded task flow. E: Session scope: The object is available for the duration of the session, which is user instance-specific. A use case for a session scope bean is a user info bean that stores information about a user, which is read from the database or an LDAP server, to avoid unnecessary queries. Incorrect Answers:A: Request scope: The object is available from the time an HTTP request is made until a response is sent back to the client. From another perspective, a request scope starts with a request to be issued from one view to another for navigation cases that don't perform a redirect but a default server-side forward. The scope spans across all non-view activities that follow the view of interest to the next view activity. B: The backing bean scope is comparable to the request scope, with the difference in that it exists for a specific client component. In general, all managed beans used in reusable components should be configured to backingBean scope. For example, bounded task flows that are designed to be regions on a page should use the backingBean scope if more than one instance of the task flow is expected to be on a single page. F: Application scope: An application scope object is available for the duration of the application and is shared among users. This scope may be used to hold static objects that are the same for all users. References: http://xmlandmore.blogspot.se/2009/10/types-of-scopes-in-fusion-web.html
C: View scope: The object is available until the view ID for the current view activity changes. This becomes handy when you use partial page rendering. If you have a dependent list box, you might send a server request to refresh the list box. When a response is returned, the request scope will be gone but the view scope will be still there. 
D: A pageFlow scope exists for each task flow instance and has a lifespan between request and session scope. The lifetime of the scope spans across all pages in a bounded task flow. 
E: Session scope: The object is available for the duration of the session, which is user instance-specific. A use case for a session scope bean is a user info bean that stores information about a user, which is read from the database or an LDAP server, to avoid unnecessary queries. 
Incorrect Answers:
A: Request scope: The object is available from the time an HTTP request is made until a response is sent back to the client. From another perspective, a request scope starts with a request to be issued from one view to another for navigation cases that don't perform a redirect but a default server-side forward. The scope spans across all non-view activities that follow the view of interest to the next view activity. 
B: The backing bean scope is comparable to the request scope, with the difference in that it exists for a specific client component. In general, all managed beans used in reusable components should be configured to backingBean scope. For example, bounded task flows that are designed to be regions on a page should use the backingBean scope if more than one instance of the task flow is expected to be on a single page. 
F: Application scope: An application scope object is available for the duration of the application and is shared among users. This scope may be used to hold static objects that are the same for all users. 
References: http://xmlandmore.blogspot.se/2009/10/types-of-scopes-in-fusion-web.html



Question 3

Identify three statements that are true about JSF. (Choose three.)


  1. Components are used to define page structure.
  2. Navigation between pages is defined outside of the JSF page in the metadata.
  3. Managed beans can have only one of two memory scopes.
  4. Managed beans can be accessed from more than one page. 
  5. JSF does not support template creation for pages.
Correct answer: ABD
Explanation:
Incorrect:Not C: Managed beans can have the following scopes: Application, session, PageFlow, view, request, BackingBean.Not E: JavaServer Faces (JSF) technology provides the tools to implement user interfaces that are easy to extend and reuse. Templating is a useful Facelets feature that allows you to create a page that will act as the base, or template, for the other pages in an application. By using templates, you can reuse code and avoid recreating similarly constructed pages. Templating also helps in maintaining a standard look and feel in an application with a large number of pages. References: http://docs.oracle.com/javaee/6/tutorial/doc/giqxp.html
Incorrect:
Not C: Managed beans can have the following scopes: Application, session, PageFlow, view, request, BackingBean.
Not E: JavaServer Faces (JSF) technology provides the tools to implement user interfaces that are easy to extend and reuse. Templating is a useful Facelets feature that allows you to create a page that will act as the base, or template, for the other pages in an application. By using templates, you can reuse code and avoid recreating similarly constructed pages. Templating also helps in maintaining a standard look and feel in an application with a large number of pages. 
References: http://docs.oracle.com/javaee/6/tutorial/doc/giqxp.html



Question 4

Consider the following code:
  
At run time, a user modifies the value in the af:inputText control, then presses af:commandButton.
Assuming no errors are raised, which option represents the managed bean code invoked in the correct order? (Choose the best answer.) 


  1. myBean.handleChange, myBean.doAction, myBean.qetDestination
  2. myBean.doAction, myBean.handleChange, myBean.getDestination
  3. myBean.handleChange, myBean.doAction
  4. myBean.doAction, myBean.handleChange
Correct answer: C



Question 5

Which three options does an entity object automatically implement? (Choose three.)


  1. primary key functionality based on any column in the database that is marked as a primary key
  2. not-null functionality based on any column in the database that is marked as not null
  3. attribute precision based on column size
  4. all table check constraints
  5. any table triggers
Correct answer: ABC
Explanation:
When you create an entity object from an existing table, first JDeveloper interrogates the data dictionary to infer the following information:The primary and unique key attributes The mandatory flag on attributes, based on NOT NULL constraints The length and precision of each attribute The Java-friendly entity attribute names from the names of the table's columns (for example, USER_ID -> UserId) The SQL and Java data types of each attribute based on those of the underlying column The relationships between the new entity object and other entities based on foreign key constraints References: http://docs.oracle.com/cd/E48682_01/web.1111/b31974/bcentities.htm
When you create an entity object from an existing table, first JDeveloper interrogates the data dictionary to infer the following information:
  • The primary and unique key attributes 
  • The mandatory flag on attributes, based on NOT NULL constraints 
  • The length and precision of each attribute 
  • The Java-friendly entity attribute names from the names of the table's columns (for example, USER_ID -> UserId) 
  • The SQL and Java data types of each attribute based on those of the underlying column 
  • The relationships between the new entity object and other entities based on foreign key constraints 
References: http://docs.oracle.com/cd/E48682_01/web.1111/b31974/bcentities.htm



Question 6

You create a new ADF Faces page called emp.jsрх and bind some data controls to that page. You notice a file called empPageDef.xml. What is this file for? 
(Choose the best answer.)


  1. It is the page definition that contains the XML representation of the page layout and the components on that page.
  2. It is a template file into which you can write any managed bean code.
  3. It is the page template definition file that represents the chosen quick start layout.
  4. It is the file that contains the definition of the bindings to your data-bound components.
  5. It defines the binding context for all pages in your application.
Correct answer: D
Explanation:
The pageNamePageDef.xml files are created each time you insert a databound component into a web page using the Data Controls Palette or Structure window. These XML files define the Oracle ADF binding container for each web page in the application. The binding container provides access to the bindings within the page. You will have one XML file for each databound web page. References: http://docs.oracle.com/cd/E15586_01/web.1111/b31974/appendixa.htm#CDJCBIGB
The pageNamePageDef.xml files are created each time you insert a databound component into a web page using the Data Controls Palette or Structure window. 
These XML files define the Oracle ADF binding container for each web page in the application. The binding container provides access to the bindings within the page. You will have one XML file for each databound web page. 
References: http://docs.oracle.com/cd/E15586_01/web.1111/b31974/appendixa.htm#CDJCBIGB



Question 7

Which three steps would you perform to enable security for an ADF application? (Choose three.)


  1. Define authentication and authorization by using the configure ADF Security wizard.
  2. Define which HTML pages must be secured.
  3. Grant roles access rights to bounded task flows.
  4. Grant roles access rights to unbounded task flows.
  5. Deploy the application to a Java EE Security-enabled server to test the user roles.
  6. Grant roles access rights to pagedefs for views in unbounded task flows.
Correct answer: ABC
Explanation:
A: The Configure ADF Security wizard allows you to choose to enable authentication and authorization separately.C: ADF bounded task flow protects the entry point to the task flow, which in turn controls the user's access to the pages contained by the flow.B: To grant public access to ADF security-aware resources:From the Application menu, choose Secure > Resource Grants. In the Resource Grants page of the jazn-data.xml file overview editor, select one of the following resources from the Resource Types dropdown list:Task Flow when you want to make a bounded task flow public. The application displays the web pages under the permission you define for the task flow itself. Thus, all constituent web pages of the bounded task flow will become public. Web Page when you want to make individual web pages public. Typically, these pages are defined by an unbounded task flow and are top-level pages in the application, such as a home page. Incorrect Answers:D, F: The unbounded task flow is not an ADF security-aware component and allows no grants.References: https://docs.oracle.com/cd/E21764_01/web.1111/b31974/adding_security.htm#ADFFD19895
A: The Configure ADF Security wizard allows you to choose to enable authentication and authorization separately.
C: ADF bounded task flow protects the entry point to the task flow, which in turn controls the user's access to the pages contained by the flow.
B: To grant public access to ADF security-aware resources:
  1. From the Application menu, choose Secure > Resource Grants. 
  2. In the Resource Grants page of the jazn-data.xml file overview editor, select one of the following resources from the Resource Types dropdown list:
    • Task Flow when you want to make a bounded task flow public. The application displays the web pages under the permission you define for the task flow itself. 
      Thus, all constituent web pages of the bounded task flow will become public. 
    • Web Page when you want to make individual web pages public. Typically, these pages are defined by an unbounded task flow and are top-level pages in the application, such as a home page. 
Incorrect Answers:
D, F: The unbounded task flow is not an ADF security-aware component and allows no grants.
References: https://docs.oracle.com/cd/E21764_01/web.1111/b31974/adding_security.htm#ADFFD19895



Question 8

Which statement is true about the difference between an Action binding and a methodAction binding? (Choose the best answer.) 


  1. None; they are used interchangeably.
  2. An Action binding is a binding to a method defined in the business service exposed through a data control, whereas a methodAction binding is used to bind only to a method in a backing bean.
  3. Both are bindings to methods defined in a business service, but an Action binding is used to bind to a UI component whereas a methodAction binding is only called programmatically from a backing bean.
  4. Both are bindings to methods defined in a business service, but a methodAction binding is used to bind to a UI control whereas an Action binding is only called programmatically from a backing bean.
  5. Action bindings are used to bind to built-in operations such as Create, Delete and Next, whereas a methodAction binding is used to bind to custom methods in the data control.
Correct answer: E
Explanation:
Action binding object can be used to bind command components, such as buttons or links, to built-in data control operations (such as Commit or Rollback) or to built-in collection-level operations (such as Create, Delete, Next, Previous, or ExecuteWithParams). Method bindings are similar to action bindings. But, they are used to bind to methods defined in an ADF BC application, view object, or view row client interfaces. References: http://xmlandmore.blogspot.se/2010/05/action-bindings-and-method-bindings-in.html
Action binding object can be used to bind command components, such as buttons or links, to built-in data control operations (such as Commit or Rollback) or to built-in collection-level operations (such as Create, Delete, Next, Previous, or ExecuteWithParams). 
Method bindings are similar to action bindings. But, they are used to bind to methods defined in an ADF BC application, view object, or view row client interfaces. 
References: http://xmlandmore.blogspot.se/2010/05/action-bindings-and-method-bindings-in.html



Question 9

You are prototyping an ADF application that uses ADF Business Components. However, the database schema that you can connect to does not contain any tables or data to show in the prototype. 
Which two declarative options are available to you to provide hard-coded data for the purposes of your prototype? (Choose two.)


  1. entity objects with default values
  2. placeholder data control
  3. static list view objects
  4. declarative managed beans
Correct answer: BC
Explanation:
B: Placeholder data controls are easy-to-create, yet fully functional, stand-in data controls that can efficiently speed up the design-development process. UI designers can use placeholder data controls to create page layouts and page flows without the need to have real data controls available. C: The key advantage of the Static List View Object is it's suitable for small datasets that never change. Static List VOs suitable for stub VOs in creating ADF Faces RC web page mockups for demonstration purposes, where the database tables have yet to be designed. References: http://one-size-doesnt-fit-all.blogspot.se/2008/09/jdev-11g-adf-bc-new-feature-static-list.html
B: Placeholder data controls are easy-to-create, yet fully functional, stand-in data controls that can efficiently speed up the design-development process. UI designers can use placeholder data controls to create page layouts and page flows without the need to have real data controls available. 
C: The key advantage of the Static List View Object is it's suitable for small datasets that never change. Static List VOs suitable for stub VOs in creating ADF Faces RC web page mockups for demonstration purposes, where the database tables have yet to be designed. 
References: http://one-size-doesnt-fit-all.blogspot.se/2008/09/jdev-11g-adf-bc-new-feature-static-list.html



Question 10

View the Exhibit. 
  
Which two modifications would you make in the task flow so that RegisterRouter displays the appropriate page depending on the user type and subsequently 
displays the confirmation page? (Choose two.)


  1. Define the isCustomer outcome in RegisterRouter.
  2. Create a global control flow rule pointing to CustomerPage.
  3. Create a control flow rule from EmployeePaqe to Confirmation.
  4. Change the default activity from Register to RegisterRouter.
  5. Set the isEmployee outcome to #{FALSE}.
Correct answer: AB
Explanation:









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