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Up to the immediate present 1Z0-864 Simple Questions Latest Practice Test Questions VCE PDF Dumps

Qustion No. 1

The requirements state that a new system must use encryption to prevent data theft. Passwords must be stored using a one-way encryption algorithm so that they can never be accidentally displayed. Social security numbers must be stored in the database using a symmetrical algorithm so that they can be output on reports when necessary. Which three encryption methods can you use? (Choose three.)

A. Passwords can be stored using MD5.

B. Passwords can be stored using RC4.

C. Passwords can be stored using 3DES.

D. Social security numbers can be stored using SHA.

E. Social security numbers can be stored using 3DES.

F. Social security numbers can be stored using Blowfish.

Answer: AEF

Qustion No. 2

Over the years your company has developed a large set of EJB 2.1 components. Having upgraded its servers to an EJB 3 implementation, your company is ready to develop EJB 3 components for the first time in order to use the new development features. Which two can be implemented without upgrading an existing EJB 2.1 module to version 3, which would require repackaging and retesting the module? (Choose two.)

A. EJB 2.1 stateless session bean using an EJB 3 interceptor

B. EJB 3 stateless session bean invoking an EJB 2.1 stateless session bean

C. EJB 3 stateless session bean replacing an existing EJB 2.1 stateless session bean

D. EJB 3 stateless session bean sharing a timer with a EJB 2.1 stateless session bean

Answer: BC

Qustion No. 3

Using Java Web Start, you are going to deploy a new Java application from the IT development server to all the computers in your company's network. Which three actions can an unsigned JAR file in the Java Web Start sandbox take? (Choose three.)

A. Persist session data

B. Access network printers from the system

C. Use the network to access an arbitrary file server

D. Use the JNLP APIs to interact with the local file system

E. Use the network to access the host from which the application was downloaded

Answer: ADE

Qustion No. 4

Your company's web site is supported with a cluster of load-balanced web servers and a database server. To reduce expenses, your company must replace your current cluster of web servers with a single web server. All servers under consideration have the same specification. Which three items will be negatively impacted by this re-architecture? (Choose three.)

A. Security

B. Reliability

C. Scalability

D. Availability

E. Manageability

F. Maintainability

Answer: BCD

Qustion No. 5

You are designing a new subsystem to store and search user comments on a fashion company's web site. There are a large number of comments and they are indexed in several ways to provide fast access. The class used to add and search for comments is called CommentManager. In the prototype, the comments are stored in the file system, but they will be moved to a database as soon as it is available. Which two statements facilitate modifying the system to use a database? (Choose two.)

A. The storage mechanism must be private to CommentManager.

B. CommentManager should provide a JDBC driver for a file system-based database.

C. The comments stored in CommentManager should only be accessed by CommentManager.

D. CommentManager should be a singleton object and all the accessor methods must be static.

Answer: AC

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