Oracle 1Z0-478 Online Practice Questions and Exam Preparation

Oracle 1Z0-478 Online Questions & Answers

• Question 11:

  View the Exhibit.

  

  You have modeled a SOA composite with a single BPEL process component. Both of the invoke activities in the BPEL process use the same XA connection factory: eis/DB/SOADemo. The InsertData partnerlink inserts a new record in the

  DEPT table in the database. The storeproc_validate partner link calls a stored procedure that validates this newly inserted record.

  Which statement is true about the composite?

  A. Invoke1 is capable of detecting omitted XML elements in the input payload and throwing a bindingFault to the caller
  B. If invoke1 encounters a primary key constraint violation on insert, the invocation retires a total of 4 times with a starting interval of 1 and a back-off factor of 2.
  C. Invoke1 and invoke2 use the same underlying JDBC connection to the database.
  D. If invoke2 interaction fils, the insert from Invoke1 is also rolled back.
  A. Invoke1 is capable of detecting omitted XML elements in the input payload and throwing a bindingFault to the caller

  ---

  Detect omissions (it is selected here according to the screenshot) allows the MERGE and INSERT operations to ignore empty or missing XML elements in the input payload. For a MERGE operation, this will prevent valid but unspecified

  values from being overwritten with NULL. For INSERT operations, they will be omitted from the INSERT statement, allowing default values to take effect.

  Incorrect:

  Not B: Auto-tries are related to connection problems, not to primary key constraints.

  * In the Auto-Retries section, specify the value for auto-retry incase of time out. In case of a connection related fault, the Invoke activity can be automatically retried a limited number of times.

• Question 12:

  Over a period of time, you have deployed three versions (1.0, 1.1, and 1.2) of a SOA application X to a three-node SOA cluster. All versions of X subscribes to a business event named createCustomer and instantiate a new BPEL process Y on receiving the event.

  At runtime, how many SOA composite instances are generated when createCustomer business event is fired?

  A. 1
  B. 3
  C. 9
  A. 1

  ---

  Note:

  * When the Oracle SOA Service Infrastructure performs an update or redeployment of a composite, it can overwrite an existing version (x) or create a new version (x+1). All composites are uniquely identified based on the composite name and revision. By default, clients accessing a composite use the version that is identified in the MDS repository as the default version (also visible from Oracle Enterprise Manager Fusion Middleware Control).

• Question 13:

  How are task outcomes processed in a BPEL process?

  A. Each path out of the human task activity has a condition in which you specify the outcome that causes that path to be followed.
  B. With onMessage or pick activities that receive the outcome from the human workflow engine.
  C. With a switch containing a case for each outcome of interest plus an optional otherwise case after the human task activity.
  D. With a switch containing one case for each possible outcome after the human task.
  C. With a switch containing a case for each outcome of interest plus an optional otherwise case after the human task activity.

  ---

  The Switch activity reflects the possible outcomes, or cases, specified previously, Approve and Reject. It also has an Otherwise case to represent other outcomes, such as errored, stale, or expired. Inside each of the cases, you can add activities to complete modeling of the business process.

  Note:

  *

  Human Task editor--A tool that enables you to specify task settings such as task outcome, payload structure, task participants, assignment and routing policy, expiration and escalation policy, notification settings, and so on.

  *

  Task outcomes capture the possible outcomes of a task. The Oracle BPEL Worklist Application displays the outcomes you specify here as the possible actions to perform during run time. You can specify the following types of task outcomes:

  Select a seeded outcome Enter a custom outcome

  *

  The Outcomes window displays the possible outcomes for tasks. APPROVE and REJECT are selected by default.

  

• Question 14:

  What does service abstraction do?

  A. It hides the implementation details of a service. Including the location of the service, the interface, and the idempotence of the operations.
  B. It creates services quickly and easily for a variety of back-end technologies.
  C. It translates and transforms messages.
  D. It mediates security models.
  A. It hides the implementation details of a service. Including the location of the service, the interface, and the idempotence of the operations.

• Question 15:

  An invoke activity in a BPEL process is dehydrated _____. (select two)

  A. immediately after execution if idempotent is set to True
  B. before execution if idempotent is set to True
  C. immediately after execution if idempotent is set to False
  D. before execution if idempotent is set to False
  C. immediately after execution if idempotent is set to False
  D. before execution if idempotent is set to False

• Question 16:

  In a design session, a colleague makes the following comments about cluster support for Oracle SOA Suite 11g application. Which two statements are correct?

  A. A cluster appears to clients as multiple WebLogic Server instances
  B. The server instances in a cluster must all run on the same machine.
  C. You can scale a cluster by adding machines to the cluster to host additional server instances.
  D. Server instances in a cluster can run different versions of WebLogic Server.
  E. You can create it cluster by using WLST, the WebLogic Server Administration Console or Enterprise Manager Fusion Middleware Control.
  F. For management purposes, you can split a cluster across multiple domains.
  C. You can scale a cluster by adding machines to the cluster to host additional server instances.
  E. You can create it cluster by using WLST, the WebLogic Server Administration Console or Enterprise Manager Fusion Middleware Control.

  ---

  C: Scale by adding machines:

  * A WebLogic Server cluster provides these benefits: Scalability The capacity of an application deployed on a WebLogic Server cluster can be increased dynamically to meet demand. You can add server instances to a cluster without interruption of service--the application continues to run without impact to

  clients and end users. High-Availability Incorrect:

  Not A. They appear as one weblogic server instance. Not B. They can run on sepate machines.

• Question 17:

  View the Exhibit.

  

  A user has configured Mediator M1 to receive and route product Information from System X into its internal applications in chronological order. For each product1 M1 receives one create number of "update" events from an AQ Queue via a JMS adapter. M1 can receive updates to the product at any time of day. The user claims that incoming messages for each product are received and processed in the correct chronological order 95% of the time. However, the messages are being processed out of order 5% of the time. This results in critical errors in the target systems. The user expects all messages pertaining to a product to be unconditionally processed In the order of arrival at M1.

  What causes this discrepancy?

  A. The user is running on a four node SOA cluster and has not configured the inbound JMS adapter to be a singleton.
  B. The user is running a single-node SOA environment but has configured the number of inbound adapter threads to be a value greater than 1.
  C. The given Mediator configuration does not address this sequencing requirement.
  D. The user has configured resequencer worker threads to a value greater than 1 for the Mediator service engine.
  C. The given Mediator configuration does not address this sequencing requirement.

  ---

  *

  From the exhibit we see: Resequence Level: component Resequence Mode: Best Effort

  *

  It is important to note that the messages to outbound services of the Oracle Mediator service component configured for best effort resequencing are not guaranteed to arrive in order of a sequence ID. At any given time, a snapshot of the available messages is taken and sequencing is performed only on those messages. Therefore, unlike a standard resequencer, it is not guaranteed that a message with a lesser sequence ID value is sent before a message that ha a greater sequence ID value but that arrived earlier. Messages with a lesser sequence ID value that arrive later might be processed in the following cycle when a snapshot of available messages is taken again and the messages are reordered.

• Question 18:

  Suppose that you pass some data from a process variable as a parameter into a human task. The variable is then updated at a later time in a parallel stream of execution in the BPEL process while the human task still executing (that is, before is auctioned by the assignee)

  What does the assignee see after opening the task in the workspace and looking at the parameter?

  A. The parameter contains the values of the process variable as it was when the task was created.
  B. The parameter contains the values of the process variable as it is at the current time (that is, when the user opened the human task in the workspace).
  C. The parameter is empty, and the task must be restarted to pick up the new values of the processes variable.
  D. It is not possible to determine from the information.
  A. The parameter contains the values of the process variable as it was when the task was created.

  ---

  Note: The BPEL process specification does not provide a mechanism to ensure the thread safety of BPEL variables (that is, a lack of a synchronized qualifier such as in Java), which is necessary for true multithreaded programming.

• Question 19:

  Which statement is true about how the BPEL Process Manager works?

  A. If the transaction property for a synchronous BPEL process is set to requiresNew transaction, a new transaction is created for the execution and the existing transaction (if there is one) is suspended.
  B. If the transaction property for an asynchronous BPEL process is set to required, the BPEL process joins a caller's transaction (if there is no one) or creates a new transaction (if there is no transaction)
  C. If the delivery policy for a synchronous BPEL process is set to sync, the instance-initiating message is not temporarily saved in the delivery layer.
  D. If the delivery policy for a synchronous BPEL process is set to async.persist, messages to the system are saved in the delivery store before being picked up by the service engine.
  A. If the transaction property for a synchronous BPEL process is set to requiresNew transaction, a new transaction is created for the execution and the existing transaction (if there is one) is suspended.

  ---

  With bpel.config.transaction Set to requiresNew a new transaction is always created and an existing transaction (if there is one) is suspended.

• Question 20:

  Which two are beneficial results of a successful SOA governance initiative?

  A. Maintains a direct connection between business objectives and the production and consumption of services
  B. Provides technical standards for the creation of web services.
  C. Prevents the proliferation of services of questionable utility, reliability and business value
  D. Develops strategy maps and value-chain analyses that help define business requirements
  A. Maintains a direct connection between business objectives and the production and consumption of services
  C. Prevents the proliferation of services of questionable utility, reliability and business value