Tag: web technology

Questions Related to web technology

What alternatives exist to embedding Java code directly within the HTML markup of your JSP page?
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  1. Moving the code into your session manager.

  2. Moving the code into scriptlets.

  3. Moving the code into JavaBeans and servlets.

  4. Moving the code into a transaction manager.

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Correct Option: C

Why use RequestDispatcher to forward a request to another resource, instead of using a sendRedirect?
technology web technology

  1. Redirects are no longer supported in the current servlet API.

  2. Redirects are not a cross-platform portable mechanism.

  3. The RequestDispatcher does not use the reflection API.

  4. The RequestDispatcher does not require a round trip to the client, and thus is more efficient and allows the server to maintain request state.

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Correct Option: D

What is a benefit of using JavaBeans to separate business logic from presentation markup within the JSP environment?

technology web technology

  1. It allows the JSP to access middleware.

  2. It creates a cleaner role separation between the web-production team and the software development team, so that the web-production team can focus on presentation markup, while the software team can focus on building reusable software components for helpin

  3. It provides a dynamic markup environment, such that JavaBeans are integrated seamlessly with the template presentation content, in order to create the dynamic display for the client.

  4. It provides the developer with full access to the Java 2 Platform Enterprise Edition (J2EE), which is unavailable from outside the JavaBean environment.

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Correct Option: B

AI Explanation

To answer this question, let's go through each option to understand why it is correct or incorrect:

Option A) It allows the JSP to access middleware - This option is incorrect because JavaBeans itself does not directly enable JSP to access middleware. However, JavaBeans can be used in conjunction with other technologies to access middleware.

Option B) It creates a cleaner role separation between the web-production team and the software development team, so that the web-production team can focus on presentation markup, while the software team can focus on building reusable software components for helping - This option is correct. JavaBeans provide a way to separate business logic from presentation markup within the JSP environment. This separation allows the web-production team to focus on the presentation markup, while the software development team can focus on building reusable software components (JavaBeans) that handle the business logic.

Option C) It provides a dynamic markup environment, such that JavaBeans are integrated seamlessly with the template presentation content, in order to create the dynamic display for the client - This option is incorrect. While JavaBeans can be used to create a dynamic display for the client, it does not specifically provide a dynamic markup environment. JSP itself provides the dynamic markup environment by allowing the integration of JavaBeans with the template presentation content.

Option D) It provides the developer with full access to the Java 2 Platform Enterprise Edition (J2EE), which is unavailable from outside the JavaBean environment - This option is incorrect. JavaBeans do not provide exclusive access to the Java 2 Platform Enterprise Edition (J2EE). J2EE is a separate platform that JavaBeans can be used with, but it is not limited to JavaBeans.

The correct answer is B. It creates a cleaner role separation between the web-production team and the software development team, so that the web-production team can focus on presentation markup, while the software team can focus on building reusable software components for helping. This option highlights one of the benefits of using JavaBeans to separate business logic from presentation markup within the JSP environment.

Choose the statement that best describes the relationship between JSP and servlets:
technology web technology

  1. Servlets are built on JSP semantics and all servlets are compiled to JSP pages for runtime usage.

  2. JSP and servlets are unrelated technologies.

  3. Servlets and JSP are competing technologies for handling web requests. Servlets are being superseded by JSP, which is preferred. The two technologies are not useful in combination.

  4. JSPs are built on servlet semantics and all JSPs are compiled to servlets for runtime usage.

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Correct Option: D
Explanation:

To answer this question, the user needs to have a basic understanding of JSP and servlets.

Option A is incorrect. Servlets and JSPs are separate technologies and are not compiled to each other.

Option B is incorrect. JSP and servlets are related technologies used for web development.

Option C is incorrect. Servlets and JSPs are complementary technologies that can be used together to handle web requests.

Option D is correct. JSPs are built on top of the Servlet API and are ultimately compiled down to servlets.

Therefore, the correct answer is:

The Answer is: D

A tag library is a collection of custom tags.
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  1. True

  2. False

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Correct Option: A

Inside which HTML element do we put the JavaScript?
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Correct Option: A

What is the correct JavaScript syntax to write "Hello World"?
technology web technology

  1. response.write("Hello World")

  2. "Hello World"

  3. document.write("Hello World")

  4. ("Hello World")

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Correct Option: C

Where is the correct place to insert a JavaScript?
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  1. The section

  2. Both the section and the section are correct

  3. The section

  4. None of the above

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Correct Option: B

What is the correct syntax for referring to an external script called "xxx.js"?
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Correct Option: A

An external JavaScript must contain the tag

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  1. True

  2. False

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Correct Option: B