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IT Specialist INF-306 Exam Syllabus Topics:

SectionObjectives
Topic 1: JavaScript Programming- Core JavaScript concepts
  • 1. Functions and control flow
    • 2. Variables, data types, and operators
      - DOM manipulation
      • 1. Selecting and modifying DOM elements
        • 2. Event handling
          Topic 2: CSS Styling- Selectors and styling rules
          • 1. Class, ID, and element selectors
            • 2. CSS specificity and cascade
              - Layout and responsive design
              • 1. Media queries and responsive layouts
                • 2. Flexbox and grid fundamentals
                  Topic 3: HTML Fundamentals- Forms and input elements
                  • 1. Input types and accessibility considerations
                    • 2. Form controls and validation attributes
                      - Document structure and semantics
                      • 1. HTML5 document structure (doctype, head, body)
                        • 2. Semantic elements (header, nav, section, article, footer)
                          Topic 4: Web Application Development Concepts- Media and APIs
                          • 1. Basic web APIs usage
                            • 2. Embedding multimedia elements
                              - Client-side storage
                              • 1. LocalStorage and SessionStorage usage

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                                IT Specialist HTML5 Application Development INF-306 Prüfungsfragen mit Lösungen (Q49-Q54):

                                49. Frage
                                You want to position a specific element so that it always directly follows the previous element, which is positioned by default, regardless of the viewport characteristics. Which positioning method should you use?

                                Antwort: A

                                Begründung:
                                The correct positioning method is static. In CSS, position: static is the default positioning behavior for elements. A statically positioned element remains in the normal document flow, meaning it is laid out according to the order of the markup and directly follows preceding elements unless another layout rule changes that flow. MDN defines static positioning as placing the element according to the normal flow of the document, with top, right, bottom, left, and z-index having no effect. This matches the requirement that the element always directly follows the previous default-positioned element and does not depend on viewport characteristics. absolute removes the element from normal flow and positions it relative to a containing block.
                                fixed also removes it from normal flow and positions it relative to the viewport. sticky starts in normal flow but changes behavior relative to a scrolling ancestor when a threshold is crossed. References/topics: CSS positioning, normal document flow, static positioning, viewport-independent layout.


                                50. Frage
                                You are creating a script that reads a JSON menu file and displays the Entree, Price, and Description.
                                Complete the code by selecting the correct option from each drop-down list.
                                Note: You will receive partial credit for each correct selection.

                                Antwort:

                                Begründung:

                                Explanation:
                                First drop-down: var xhr = new XMLHttpRequest();
                                Second drop-down: if(xhr.status===200){
                                Third drop-down: responseObject = JSON.parse(xhr.responseText);
                                The script must first create an XMLHttpRequest object, so the correct first selection is var xhr = new XMLHttpRequest();. This object performs the asynchronous request for menu.json. After the request finishes, the onload callback executes. The response should be processed only when the request succeeds, so the correct status check is if(xhr.status===200){; HTTP status 200 means the file was successfully retrieved.
                                Status codes 403, 404, and 500 represent forbidden access, missing resource, and server error conditions, so they are not appropriate for normal JSON processing. The JSON file is returned as plain text through xhr.
                                responseText, so it must be converted into a JavaScript object with JSON.parse(xhr.responseText). Once parsed, the code can access responseObject.menu[i].Entree, Price, and Description inside the loop and build the display output. responseXML is incorrect because the source file is JSON, not XML.


                                51. Frage
                                Review the images on the left.
                                Complete the statements by selecting the correct option from each drop-down list.
                                Note: You will receive partial credit for each correct selection.

                                Antwort:

                                Begründung:

                                Explanation:
                                First drop-down: flex boxes
                                Second drop-down: background-size
                                Third drop-down: cover
                                The correct layout mechanism is responsive flex boxes because the content changes from a vertical mobile arrangement to a wider multi-column layout as space becomes available. Flexbox supports this behavior naturally through flexible item sizing and wrapping, often without needing explicit media queries for every screen size. The header image must fill its visible header region on both mobile and desktop. The correct CSS property for controlling how a background image scales inside its container is background-size. The correct value is cover, because background-size: cover scales the image so that the entire container is covered while preserving the image's aspect ratio. This prevents distortion, although some cropping can occur when the image and container have different aspect ratios. contain would preserve the full image but may leave empty space. auto would use the image's intrinsic size and would not reliably fill the header area. background- attachment, background-clip, and background-repeat do not control image scaling.


                                52. Frage
                                Review the grid container requirements and mockup on the left. Which markup should you use to define the grid container?

                                Antwort: D


                                53. Frage
                                You need to use a flexbox so that new content you add to the container appears at the highest point on a vertical list. You want to achieve this goal without specifying an order. Which value should you use for flex- direction?

                                Antwort: D

                                Begründung:
                                The correct value is column-reverse. The flex-direction property defines the main axis of a flex container and determines whether flex items are laid out horizontally, vertically, or in the reverse direction. column creates a vertical layout where items flow from the top of the container toward the bottom. If new content is appended after existing content, normal column layout places that new item later in the visual list, typically lower on the page. column-reverse preserves a vertical main axis but reverses the visual direction, so later items in the source order appear at the highest visual point of the list. This satisfies the requirement without using the order property on individual flex items. row and row-reverse are incorrect because they create horizontal layouts, not vertical lists. The reverse-direction flex values should be used deliberately because visual order can differ from DOM order, but for this exam scenario, column-reverse is the value that places newly appended vertical content at the top. References/topics: CSS flexbox, flex-direction, main axis, column layout, reverse visual flow.


                                54. Frage
                                ......

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