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| Section | Objectives |
|---|---|
| Topic 1: CSS Styling | - Selectors and styling rules
|
| Topic 2: Web Application Development Concepts | - Client-side storage
|
| Topic 3: HTML Fundamentals | - Forms and input elements
|
| Topic 4: JavaScript Programming | - DOM manipulation
|
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61. Frage
You need to display the following user interface:
A text input field that displays a selectable suggestion list containing:
Motorcycle
Truck
Boat
Car
Bicycle
Antwort:
Begründung:
Explanation:
The correct markup uses the HTML5 < datalist > element because the interface shows a text input with a drop- down list of suggested values. The < input > element has list= " vehicles " , which means it must be connected to a < datalist > whose id value is exactly vehicles. This relationship is essential: the list attribute on the input references the id of the datalist that supplies the available options. Each < option > element inside the datalist defines one suggested value: Motorcycle, Truck, Boat, Car, and Bicycle. Unlike a traditional < select > element, a datalist does not restrict the user only to the listed choices; the user can either select an option with the mouse or type directly into the input field. That behavior matches the displayed interface, where the control appears as an editable text box with suggestions. The final closing tag must be < /datalist > because the option elements belong to the datalist container. References/topics: HTML5 forms, < input list > , < datalist > , option elements, selectable typed input.
62. Frage
Which CSS property defines the sides of an element where other floating elements are not allowed?
Antwort: B
Begründung:
The correct property is clear. In CSS layout, float removes an element from the normal inline flow and positions it to the left or right, allowing following content to wrap beside it. The clear property controls whether an element may be positioned next to preceding floated elements or must be moved below them.
MDN defines clear as the property that sets whether an element must be moved below floating elements that precede it. Typical values include left, right, both, and none, allowing the developer to block floats on one or both sides. display controls the formatting behavior of an element, such as block, inline, flex, or grid. float creates the floating behavior; it does not prevent other floats from appearing beside an element. position controls positioning schemes such as static, relative, absolute, fixed, or sticky. Therefore, only clear directly defines the sides where adjacent floating elements are not permitted. References/topics: CSS floats, content flow, clearing floated elements, layout positioning.
63. Frage
Which code segment correctly displays images with 80% transparency and a blue 8px shadow?
Antwort: A
Begründung:
The correct segment is D: filter: opacity(20%) drop-shadow(8px 8px blue);. The requirement says the image must have 80% transparency, which means only 20% opacity remains visible. The CSS filter property applies graphical effects to rendered elements, including image effects such as opacity adjustment and drop shadows.
The opacity() filter function is valid inside filter, and values below 100% make the rendered element more transparent. The drop-shadow() function is also a valid CSS filter function and applies a shadow effect to the input image. Option A changes saturation, not transparency. Option B also changes saturation and incorrectly attempts to use box-shadow() as a filter function. Option C uses opacity(80%), which would produce 80% opacity rather than 80% transparency, and it also uses invalid box-shadow() syntax inside filter. References
/topics: CSS filter property, opacity(), drop-shadow(), image effects, transparency.
64. Frage
You have created custom error messages for a form. When a user attempts to submit the form with invalid data, the following must occur:
* The data must remain in the form.
* Error messages must be displayed.
Which Event property or method should you use?
Antwort: D
Begründung:
The correct method is preventDefault(). In an HTML form submission workflow, the browser's default action is to submit the form, which commonly navigates away from the current page or reloads it. Calling event.
preventDefault() inside the form's submit event handler cancels that default action, allowing the current form state to remain visible while custom validation logic displays error messages. MDN defines preventDefault() as the method that cancels the default action normally taken by the implementation for that event. The submit event is the correct event context because it fires when the form submission is triggered. defaultPrevented is only a Boolean property indicating whether cancellation has already occurred; it does not cancel anything.
cancelable only reports whether an event can be canceled. abort is not the correct form-validation event method. References/topics: HTML5 form validation, custom validation messages, submit event handling, event cancellation, preserving user input.
65. Frage
The development team just released a new version of an app for your team to test. Which three tasks should you perform during testing? Choose 3.
Antwort: A,D,F
Begründung:
The correct testing tasks are to verify application functionality, find defects, and ensure the app meets design specifications. Testing occurs after development produces a build and before acceptance or deployment decisions are made. Its purpose is to compare the implemented application against expected behavior, requirements, and design specifications. Option A is correct because functional testing confirms that user workflows, controls, validation rules, scripts, and page interactions work as intended. Option C is correct because defect discovery is a core testing responsibility; testers identify failures, inconsistencies, regressions, and unexpected behavior so the development team can correct them. Option D is correct because the app must be evaluated against the documented design, including layout, navigation, responsiveness, accessibility expectations, and feature behavior. Asking customers to submit bugs or feature requests is a feedback or product-management activity, not the primary task of an internal test cycle immediately following a development release. Checking syntax errors is primarily handled during development, linting, editing, or build processing; a released test build should already parse and execute sufficiently for functional testing.
References/topics: application lifecycle management, test phase, defect detection, functional testing, design specification validation.
66. Frage
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