1Z0-807 | The Improved Guide To 1Z0-807 dumps
Q11. Your company uses a payroll application that was developed using Java technologies. The company has acquired another company and plans to integrate its payroll process in existing application. You have been asked to implement this integration. You observe that
the business logic adopted to calculate the payroll is different in both companies.
Which design pattern would be most appropriate to use in this integration?
A. Strategy
B. Payload Extractor
C. Fly Weight
D. Composite
E. Service Locator
Answer: A
Q12. The integration team has reported a problem in testing a few deployed MDBs. By design, each MDB listens to one of four named queues. Two producers write messages to each queue. The test issues messages of the same payload type that each producer will send, but varies the number or size of these messages to measure the messaging server’s performance.
The team has noticed that the utilization remains at the same high rate any time the test writes messages destined for the third MDB. The message server log does not reveal any failure in sending messages to this MDB. Which anticipation expresses cause for this condition?
A. Hot Potato
B. Leaky Abstraction
C. Cache less Cow
D. Golden Hammer
Answer: A
Q13. Which two measures are most effective in protecting websites from cross site scripting (XSS) attacks?
A. Escape “<” and “>” parameters that displayed or evaluated by the JavaScript interpreter.
B. URL-encode “<” and “>”parameters so they will never be evaluated by the JavaScript Interpreter.
C. Ensure that the session cookie is sent only on UTTPS connections.
D. Treat all user-supplied input as unsafe, and white list known good characters
E. Execute all user-supplied scripts in a server-side sandbox.
Answer: CE
Q14. You are the architect of a JEE-based product that customers can configure to meet their own security requirements. You want to enforce basic without sacrificing customers ability to customize the product.
Which is the best method to support both requirements?
A. Define base roles and users declaratively
B. Define base roles and users programmatically
C. Build a custom security service to handle authorization
D. Customize the JRE sandbox model by using local variables
Answer: C
Q15. Which two types of applications benefit from using JavaServer Faces (JSF)?
A. An application with a customizable UI skin
B. An application that implements access control on each action based on user role.
C. An application in which type conversion of the values of UI components is implemented only in Java classes.
D. An application that sets specific database validation listeners on a UI component
Answer: CD
Q16. You are asked to propose a software deployment strategy that will reduce a client will also make deploying and testing their software stack more efficient.
Which element would you include in your proposal?
A. Vertically scalable platform
B. Horizontally scalable platform
C. Virtualized platform
D. Standard unit testing software
Answer: C
Q17. Your company has decided to expose a set of business operations through an API so that clients can access them remotely. These operations, which are modeled as methods on a stateless session bean component, act as building blocks for complex state-changing activities that need to possess atomicity,, consistency, isolation and durability (ACID) semantics.
Select the best technology to implement the API.
A. Remote Method Invocation (RMI)
B. Java Message Service (JMS)
C. XML over HTTP
D. Java Connector Architecture (JCA)
Answer: A
Q18. Which two statements are true about delegation as an Object-Oriented Design technique?
A. It is applied to a system only at compile time.
B. It is an essential element of the Singleton pattern.
C. It allows you to replace Inheritance with composition.
D. In Java technology, it is always implemented through the use of generics.
E. It always requires that at least two objects are involved in handling a request.
Answer: CE
Q19. You are designing a bank application in which automated email reminders are sent to customers every 24 hours, starting from five days prior to a payment due date until the payment is made?
Which type of beans most closely match the implementation needs for this requirement?
A. Stateful session bean
B. Stateless session bean
C. Managed bean
D. Message-driven bean
Answer: D
Q20. Which three actions restrict the ability of a web application to scale in response to load as additional computing resources are made available to it?
A. Implementing the Singleton pattern in the web tier
B. Implementing core business logic in the web tier
C. Implementing core business logic using stateless session beans
D. Storing users' session state in a database
E. Maintaining users' session state by using stateful session beans
Answer: ABE