IT Specialist INF-306 : HTML5 Application Development

  • Exam Code: INF-306
  • Exam Name: HTML5 Application Development
  • Updated: Sep 27, 2026     Q & A: 70 Questions and Answers

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IT Specialist INF-306 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Forms20%- Form elements and markup
  • 1. Datalist, fieldset, meter, output
    - Input validation
    • 1. Attributes, pattern matching, data types, required fields
      Topic 2: Application Lifecycle Management20%- Stages of application lifecycle
      • 1. Plan, design, develop, test, deploy, maintain
        - Testing and debugging
        • 1. Input validation, runtime errors, breakpoints
          Topic 3: Layouts20%- CSS layout and positioning
          • 1. Flow, float, absolute positioning, overflow
            - Responsive design
            • 1. Flexbox, grid systems, media queries
              Topic 4: Graphics and Animation25%- Canvas element usage
              • 1. Shapes, colors, transformations, interactivity
                - Styling and transformations
                • 1. 2D/3D transforms, animations, CSS filters
                  - SVG graphics
                  • 1. Inline vs referenced XML, shapes, filters
                    Topic 5: JavaScript Coding15%- Event handling
                    • 1. Event listeners, bubbling, gesture events
                      - APIs and state management
                      • 1. Third-party APIs, application state, storage
                        - Core coding concepts
                        • 1. Custom classes, data access

                          IT Specialist HTML5 Application Development Sample Questions:

                          Question #1

                          Which markup segment uses the output element to display the combined value of two input elements in HTML5?

                          • A. < form oninput= " a.value+b.value " > < input type= " number " name= " a " value= " 50 " / > + < input type= " number " name= " b " value= " 50 " / > < /form >
                          • B. < form oninput= " c.value=a.value+b.value " > < input type= " number " name= " a " value= " 50 " / >
                            + < input type= " number " name= " b " value= " 50 " / > = < output name= " c " for= " a b " > < /output
                            > < /form >
                          • C. < form > < input type= " number " name= " a " value= " 50 " / > + < input type= " number " name= " b
                            " value= " 50 " / > = < output name= " c " for= " a b " > a+b < /output > < /form >
                          • D. < form > < input type= " number " name= " a " value= " 50 " / > + < input type= " number " name= " b
                            " value= " 50 " / > = < output name= " c " for= " a b " > < /output > < /form >
                          Reveal Solution  Discussion  0

                          Correct Answer: B  🗳️

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                          Question #2

                          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.

                          Reveal Solution  Discussion  0

                          Correct Answer:


                          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.

                          Question #3

                          You create an interface for a touch-enabled application. Some input buttons do not trigger when tapped. What are two possible causes?

                          • A. The input areas overlap with other input areas.
                          • B. The touch screen is not initialized.
                          • C. The defined input areas are not large enough.
                          • D. The input areas are using event handlers to detect input.
                          Reveal Solution  Discussion  0

                          Correct Answer: A,C  🗳️

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                          Question #4

                          You define the Pet class as follows:
                          class Pet {
                          constructor(name, breed) {
                          this.name = name;
                          this.breed = breed;
                          this.show = function() {
                          var text = " < p > Your pet ' s name is " + name + " . The pet ' s breed is " + breed + " . < /p > " ; return text;
                          };
                          }
                          }
                          You need to derive a Dog class from the Pet class.
                          Complete the code by selecting the correct option from each drop-down list.
                          Note: You will receive partial credit for each correct selection.

                          Reveal Solution  Discussion  0

                          Correct Answer:


                          Explanation:
                          First blank: class Dog extends Pet {
                          Second blank: super(name, breed);
                          The correct syntax for deriving one JavaScript class from another is extends, so the derived class declaration must be class Dog extends Pet {. This creates Dog as a subclass of Pet, allowing Dog instances to inherit members defined by the Pet constructor, including name, breed, and the show() function assigned inside the parent constructor. Inside a derived class constructor, super() must be called before using this. The call super (name, breed); invokes the parent Pet constructor and passes the values required to initialize the inherited name and breed properties. Pet(name, breed); is incorrect because a class constructor cannot be invoked like a normal function. Pet.constructor(name, breed); is also incorrect because it does not call the parent constructor for the current instance. After super() runs, the Dog constructor can safely assign subclass-specific properties such as price and gender. References/topics: JavaScript classes, inheritance, extends, derived constructors, super(), custom class creation.

                          Question #5

                          Which value does the following JavaScript code fragment store in the variable num?
                          var num = localStorage.length;

                          • A. Number of bytes available in local storage
                          • B. Maximum length of a character string
                          • C. Number of key-value pairs in local storage
                          • D. Potential capacity of local storage
                          Reveal Solution  Discussion  0

                          Correct Answer: C  🗳️

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