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Exam Oracle Application Development Framework 12c Essentials
Number 1z0-419
File Name Oracle.1z0-419.CertDumps.2017-12-16.95q.vcex
Size 2 MB
Posted Dec 16, 2017
Download Oracle.1z0-419.CertDumps.2017-12-16.95q.vcex

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Demo Questions

Question 1

Which statement is true about the use of data controls in JSF? (Choose the best answer.)


  1. Only Oracle ADF Business Components can be exposed as data controls.
  2. Dragging a data control onto a JSF page generates a Java class that acts as a managed bean.
  3. An XXXpagedef.xml file holds detailed information about a JSF page’s use of data and operations exposed through ADF Data Controls.
  4. Data controls eliminate the need to use expression language in your JSF code for binding the UI to data.
  5. A Databindings.cpx file holds names of managed beans that you map to UI elements.
Correct answer: D
Explanation:
Incorrect Answers:E: The DataBindings.cpx file maps individual pages to page definition files and declares which data controls defined in the DataControls.dcx file are being used by the application.References: http://www.ibm.com/developerworks/rational/library/10/customized-data-binding-to-third-party-javaserver-faces-controls/
Incorrect Answers:
E: The DataBindings.cpx file maps individual pages to page definition files and declares which data controls defined in the DataControls.dcx file are being used by the application.
References: http://www.ibm.com/developerworks/rational/library/10/customized-data-binding-to-third-party-javaserver-faces-controls/



Question 2

Which statement is false? (Choose the best answer.)


  1. A panelDashboard has the same rowHeight for all the rows.
  2. AFStretchWidth in the style class of a panelGroupLayout causes it to fill the page horizontally.
  3. panelGroupLayout cannot have a vertical scroll bar.
  4. panelBox stretches if placed inside a panelStretchLayout center facet.
Correct answer: C
Explanation:
Incorrect Answers:A: RowHeight is the height of the rows of the grid layout as a CSS length. panelDashboard stretches the panelBox children to fit within the width of a column and the specified row height.B: ADF has a default styleClass called "AFStretchWidth" which could auto adjust the table width to let it occupy the whole horizontal space.References: http://docs.oracle.com/cd/E12839_01/apirefs.1111/e12419/tagdoc/af_panelGroupLayout.html
Incorrect Answers:
A: RowHeight is the height of the rows of the grid layout as a CSS length. panelDashboard stretches the panelBox children to fit within the width of a column and the specified row height.
B: ADF has a default styleClass called "AFStretchWidth" which could auto adjust the table width to let it occupy the whole horizontal space.
References: http://docs.oracle.com/cd/E12839_01/apirefs.1111/e12419/tagdoc/af_panelGroupLayout.html



Question 3

Which two statements ate true about a dvt:gauge component? (Choose two.)


  1. dvt:thresholdSet with dvt:threshold tags can be used to define ranges of data and coloring for a gauge.
  2. The style of the dial in a dial gauge is fixed.
  3. A gauge component can render as a vertical status meter.
  4. Gauge data range must start from 0.
Correct answer: AC
Explanation:
A: A Threshold represents a significant value range like quota, target or limit value etc. When the indicator falls into one of the threshold ranges, it means certain criteria have been met or not. Different threshold ranges in gauges may have different colors, which you may customize.C: The Vertical Status Meter and Status Meter are meters with a rectangular indicator placed in a bounding box. It looks like a mercury barometer.Incorrect Answers:B: The Indicator shows the metric value of the Gauge. There are three types of indicators for Dial Gauges: Line, Needle and Fill. Line and Needle are rotating pointers to show the metric value by pointing to certain angle on the dial. The Needle indicator is thicker than the Line indicator. Fill is a slice or section of the dial that fills from the minimum value up to the metric value. Users may specify the indicator fill color and border color.D: The simplest data model for a Gauge is a single metric value, which can be specified by the value attribute. In addition, the threshold, minimum and maximum values can also be specified by Threshold tag, and the minValue and maxValue attributes respectively.References: https://docs.oracle.com/cd/E21764_01/apirefs.1111/e12418/tagdoc/dvt_gauge.html
A: A Threshold represents a significant value range like quota, target or limit value etc. When the indicator falls into one of the threshold ranges, it means certain criteria have been met or not. Different threshold ranges in gauges may have different colors, which you may customize.
C: The Vertical Status Meter and Status Meter are meters with a rectangular indicator placed in a bounding box. It looks like a mercury barometer.
Incorrect Answers:
B: The Indicator shows the metric value of the Gauge. There are three types of indicators for Dial Gauges: Line, Needle and Fill. Line and Needle are rotating pointers to show the metric value by pointing to certain angle on the dial. The Needle indicator is thicker than the Line indicator. Fill is a slice or section of the dial that fills from the minimum value up to the metric value. Users may specify the indicator fill color and border color.
D: The simplest data model for a Gauge is a single metric value, which can be specified by the value attribute. In addition, the threshold, minimum and maximum values can also be specified by Threshold tag, and the minValue and maxValue attributes respectively.
References: https://docs.oracle.com/cd/E21764_01/apirefs.1111/e12418/tagdoc/dvt_gauge.html



Question 4

Consider a bounded task flow input parameter called employeeId of type oracle.jbo.domain.Number. When defining the parameter in the bounded task flow, if you do not define a value (destination) for the parameter, where does it get written to? (Choose the best answer.) 


  1. #{employeeId}
  2. #{employee.employeeId}
  3. #{pageFlowScope.employeeId}
  4. #{pageFlowScope.employee.employeeId}
  5. #{backingBeanScope.employeeId}
  6. #{backingBeanScope.employee.employeeId}
Correct answer: C
Explanation:
For example, the page might specify #{pageFlowScope.empno} as a page parameter and a bounded task flow might specify #{pageFlowScope.employeeID} as the value of an input parameter definition. The from-value on the view activity input page parameter would be #{pageFlowScope.employeeID} and the to-value would be #{pageFlowScope.empno}. This enables reuse of both the page definition and bounded task flow because you don't have to redefine parameters for every context in which each is used. References: https://docs.oracle.com/cd/E23943_01/web.1111/b31974/taskflows_parameters.htm#ADFFD19858
For example, the page might specify #{pageFlowScope.empno} as a page parameter and a bounded task flow might specify #{pageFlowScope.employeeID} as the value of an input parameter definition. 
The from-value on the view activity input page parameter would be #{pageFlowScope.employeeID} and the to-value would be #{pageFlowScope.empno}. This enables reuse of both the page definition and bounded task flow because you don't have to redefine parameters for every context in which each is used. 
References: https://docs.oracle.com/cd/E23943_01/web.1111/b31974/taskflows_parameters.htm#ADFFD19858



Question 5

Which two scopes can you use to make a value in a managed bean available for at least three pages in a task flow? (Choose two.)


  1. request
  2. pageflow
  3. view
  4. application
  5. server
Correct answer: BD
Explanation:
B: Choose the pageflow scope if you want the managed bean to be accessible across the activities within a task flow. A managed bean that has a pageFlow scope shares state with pages from the task flow that access it. A managed bean that has a pageFlow scope exists for the life span of the task flow.If another task flow's page references the managed bean, the managed bean creates a separate instance of this object and adds it to the pageFlow scope of its task flow.D: The application scope lasts until the application stops. Values that you store in a managed bean with this scope are available to every session and every request that uses the application.Avoid using this scope in a task flow because it persists beyond the life span of the task flow. Incorrect Answers:A: Use request scope when the managed bean does not need to persist longer than the current request.C: Use this scope for managed bean objects that are needed only within the current view activity and not across view activities. It defines scope for each view port that ADF Controller manages, for example, a root browser window or an ADF region.The life span of this scope begins and ends when the current viewId of a view port changes. If you specify view, the application retains managed bean objects used on a page as long as the user continues to interact with the page. These objects are automatically released when the user leaves the page. E: There is no server scopeReferences: http://docs.oracle.com/cd/E15586_01/web.1111/b31974/taskflows.htm#CHDFAIGC
B: Choose the pageflow scope if you want the managed bean to be accessible across the activities within a task flow. A managed bean that has a pageFlow scope shares state with pages from the task flow that access it. A managed bean that has a pageFlow scope exists for the life span of the task flow.If another task flow's page references the managed bean, the managed bean creates a separate instance of this object and adds it to the pageFlow scope of its task flow.
D: The application scope lasts until the application stops. Values that you store in a managed bean with this scope are available to every session and every request that uses the application.
Avoid using this scope in a task flow because it persists beyond the life span of the task flow. 
Incorrect Answers:
A: Use request scope when the managed bean does not need to persist longer than the current request.
C: Use this scope for managed bean objects that are needed only within the current view activity and not across view activities. It defines scope for each view port that ADF Controller manages, for example, a root browser window or an ADF region.
The life span of this scope begins and ends when the current viewId of a view port changes. If you specify view, the application retains managed bean objects used on a page as long as the user continues to interact with the page. These objects are automatically released when the user leaves the page. 
E: There is no server scope
References: http://docs.oracle.com/cd/E15586_01/web.1111/b31974/taskflows.htm#CHDFAIGC



Question 6

Which three objects can the “Create Business Components from Tables” wizard create? (Choose three.)


  1. query-based view objects based on database tables
  2. application module
  3. entity objects based on database tables
  4. entity object Java classes
  5. application module Java classes
  6. nested application modules
Correct answer: ABC
Explanation:
A: When creating an entity object using the Business Components from Tables wizard or the Create Entity Object wizard, an entity object can represent an underlying table, synonym, or view. On the Updatable View Objects page of the wizard, you can create view objects that query data from the entity objects. B: On the Application Module page of the wizard, select the Application Module checkbox.To place the application module into its own package, change the Package to model.services . C: The simplest way to create entity objects and associations is to reverse-engineer them from existing tables. To create an entity object, use the Business Components from Tables wizard.References: https://docs.oracle.com/cd/B31017_01/web.1013/b25947/bcentities002.htmhttp://www.oracle.com/technetwork/testcontent/bslayer-095695.html
A: When creating an entity object using the Business Components from Tables wizard or the Create Entity Object wizard, an entity object can represent an underlying table, synonym, or view. 
On the Updatable View Objects page of the wizard, you can create view objects that query data from the entity objects. 
B: On the Application Module page of the wizard, select the Application Module checkbox.
To place the application module into its own package, change the Package to model.services . 
C: The simplest way to create entity objects and associations is to reverse-engineer them from existing tables. To create an entity object, use the Business Components from Tables wizard.
References: https://docs.oracle.com/cd/B31017_01/web.1013/b25947/bcentities002.htm
http://www.oracle.com/technetwork/testcontent/bslayer-095695.html



Question 7

Which three statements are true about declarative features of view objects? (Choose three.)


  1. You can use view object bind variables to parameterize a view object where clause with values supplied at run time.
  2. By default, a view object instance retrieves all database rows into the view object cache.
  3. To implement master-detail behavior between two view object instances, you define an association between those instances.
  4. A view accessor defines a validation expression that you apply to a view object attribute.
  5. A view object can include attributes whose values are based on SQL expressions rather than mapping directly to a database column.
  6. A view object definition can include many view criteria but you can choose which view criteria to apply for each view object instance.
Correct answer: ACE
Explanation:
A: Declarative view objects, those are view objects that don't actually specify a hard coded query. Instead ADF creates their query at runtime, and it does it based on the data that is requested in your UI layer. This can be a huge saver of both DB resources and network resources.C: Just as with normal mode view objects, you can link view objects that you create in declarative SQL mode to other view objects to form master-detail hierarchies of any complexity.E: At runtime, when ADF Business Components works with JDBC to pass a query to the database and retrieve the result, the mechanism to retrieve the data is the SQL query. As an alternative to creating view objects that specify a SQL statement at design time, you can create entity-based view objects that contain no SQL statements. This capability of the ADF Business Components design time and runtime is known as declarative SQL mode. When the data model developer works with the wizard or editor for a view object in declarative SQL mode, they require no knowledge of SQL. In declarative SQL mode, the view object's metadata causes the ADF Business Components runtime to generate the SQL query statementsReferences: http://docs.oracle.com/cd/E37975_01/web.111240/e16182/bcquerying.htm#ADFFD1992
A: Declarative view objects, those are view objects that don't actually specify a hard coded query. Instead ADF creates their query at runtime, and it does it based on the data that is requested in your UI layer. This can be a huge saver of both DB resources and network resources.
C: Just as with normal mode view objects, you can link view objects that you create in declarative SQL mode to other view objects to form master-detail hierarchies of any complexity.
E: At runtime, when ADF Business Components works with JDBC to pass a query to the database and retrieve the result, the mechanism to retrieve the data is the SQL query. As an alternative to creating view objects that specify a SQL statement at design time, you can create entity-based view objects that contain no SQL statements. This capability of the ADF Business Components design time and runtime is known as declarative SQL mode. When the data model developer works with the wizard or editor for a view object in declarative SQL mode, they require no knowledge of SQL. In declarative SQL mode, the view object's metadata causes the ADF Business Components runtime to generate the SQL query statements
References: http://docs.oracle.com/cd/E37975_01/web.111240/e16182/bcquerying.htm#ADFFD1992



Question 8

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 9

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 10

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









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