1Z0-900 試験問題を無料オンラインアクセス

Which of these can be a JPA entity?

• A.Final class
• B.Enum type
• C.Abstract class
• D.Interface type

You need to exchange large binary messages using chunks in a WebSocket application. Identify two ways in which you can receive partial messages. (Choose two.)

• A.Define an @OnMessage method with byte [] as the first parameter and a boolean as the second parameter.
• B.Use a ChunkListener interface implementation.
• C.Define an @OnMessage method with a single MimePart parameter.
• D.Use a MessageHandler.Partial<ByteBuffer> interface implementation.

Given:

If an exception is thrown inside the if block, what effect will it have on the transaction?

• A.The transaction will be suspended.
• B.The transaction will be rolled back.
• C.The transaction will be committed.

Which statement is true about the relationship between HTTP and WebSockets?

• A.A WebSocket connection can be initialized by either client or server.
• B.A WebSocket connection is a bi-directional HTTP session with message-handling support.
• C.A WebSocket connection is initialized with an HTTP handshake.
• D.A WebSocket connection uses HTTP protocol to exchange data with the browser.

Which type allows you to share servlet attributes across your entire web application?

• A.HttpSession
• B.ServletContext
• C.ServletRequest
• D.ServletConfig