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| Section | Objectives |
|---|---|
| Forms | - HTML5 Forms and Validation
|
| Layouts | - Responsive and Flexible Layouts
|
| JavaScript Coding | - JavaScript ES6 Development
|
| Graphics and Animation | - Canvas and SVG
|
| Application Lifecycle Management | - Application Development Lifecycle
|
>> INF-306 Zertifizierungsfragen <<
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66. Frage
The following two images show a web page that uses a responsive layout displayed on a mobile device and on a PC.
Displayed on a mobile device:
The layout stacks the content vertically.
Displayed on a computer monitor:
The layout displays the content cards horizontally in multiple columns.
Review the images on the left.
Complete the statements by selecting the correct option from each drop-down list.
Antwort:
Begründung:
Explanation:
First drop-down: flex boxes
Second drop-down: background-size
Third drop-down: cover
The layout changes from a stacked mobile layout to a multi-column desktop layout without relying on media queries. That behavior is commonly achieved with responsive flex boxes, where items can wrap naturally based on the available width. The header image must fill the available header area on both mobile and desktop. For that requirement, the correct CSS property is background-size, and the correct value is cover.
background-size: cover scales the image so the entire header area is filled, even if part of the image is cropped. contain would preserve the full image but could leave empty space, and auto would keep the image at its natural size.
67. Frage
Which two statements correctly describe media queries? Choose 2.
Antwort: B,D
Begründung:
Media queries support responsive web design and allow different CSS rules to be applied at different screen sizes, device characteristics, or breakpoints. MDN describes media queries as a CSS mechanism for applying styles depending on media type and device or viewport characteristics, including width, height, resolution, and orientation. This is the foundation of responsive design because a page can adapt its layout for phones, tablets, laptops, and desktop displays without changing the HTML document. Breakpoints are the points where the design changes; MDN identifies them as the points where a media query is introduced to improve layout behavior across viewport sizes. Statement A is not generally correct because media queries are primarily a styling and layout mechanism, not a direct performance optimization. They can sometimes help avoid unsuitable layouts, but performance improvement is not their defining purpose. Statement D is incorrect because media queries are CSS rules; they do not execute or dynamically process JavaScript code. References
/topics: responsive design, CSS media queries, viewport width, breakpoints, adaptive layout rules.
68. Frage
The ctx variable is the context of an HTML5 canvas object. What does the following HTML markup draw?
ctx.arc(x, y, r, 0, Math.PI, true);
Antwort: D
Begründung:
The statement draws a semicircle at the specified point. The arc() method of the Canvas 2D API adds a circular arc to the current path. Its core parameters are the center point x, y, the radius, the starting angle, the ending angle, and an optional direction flag. In this expression, x and y define the center of the arc, and r defines its radius. The start angle is 0 radians, and the end angle is Math.PI radians. Since Math.PI represents
180 degrees, the path covers exactly half of a full circle. The final argument, true, tells the canvas context to draw the arc counterclockwise rather than using the default clockwise direction; however, the angular span remains half of the circumference. The call does not draw a complete visible shape unless the path is later stroked or filled, but the geometric path being created is a semicircular arc. It is not a straight line, square, or full circle. References/topics: Canvas 2D context, arc() method, radians, path construction, drawing arcs and circles.
69. Frage
Which three methods are associated with the HTML5 localStorage API? Choose 3.
Antwort: A,C,D
Begründung:
The correct methods are setItem(), removeItem(), and clear(). The HTML5 Web Storage API exposes localStorage as a persistent key-value storage object for the current origin. Data stored in localStorage remains available after page reloads and browser restarts unless it is explicitly removed or cleared. setItem (key, value) stores a value under a named key or updates the value if the key already exists. removeItem(key) deletes one specific key-value pair from storage. clear() removes all key-value pairs from the storage object for that origin. These methods are part of the standard Storage interface used by both localStorage and sessionStorage. write is not a Web Storage method; it is associated with document-writing behavior, not application state storage. cookie is also incorrect because cookies are a separate browser storage mechanism accessed through document.cookie, not a method of localStorage. References/topics: Web Storage API, localStorage, Storage interface, application state, persistent key-value data.
70. Frage
You need to display the following user interface:
Motorcycle
Truck
Boat
Car
Bicycle
Complete the markup by selecting the correct option from each drop-down list.
Antwort:
Begründung:
Explanation:
First drop-down: datalist
Second drop-down: vehicles
Third drop-down: < /datalist >
The correct element is < datalist > because the interface requires a text input that provides selectable suggestions while still allowing the user to type. The < input > element uses list= " vehicles " , so it must be connected to a < datalist > element whose id is exactly vehicles. The id cannot be vehicle, because vehicle is already the input element's own identifier and does not match the value used by the list attribute. The < option
> elements inside the datalist define the suggested values: Motorcycle, Truck, Boat, Car, and Bicycle. ul, ol, and li are list-markup elements and do not create input suggestions. select would create a fixed dropdown list, but it would not match the editable input-with-suggestions behavior shown. The closing tag must match the opening datalist element, so the final selection is < /datalist > .
71. Frage
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Die IT-Kandidaten sind meistens Beschäftigte. Deshalb haben viele nicht genügende Zeit, sich auf die IT Specialist INF-306 Prüfung vorzubereiten. Aber sie verwenden viel Zeit auf die Schulungskurse. Am wichtigsten haben Kandidaten viele wertvolle Zeit verschwendet. Hier empfenlen wir Ihnen eine gute Website für die Lernmaterialien. Teil der Prüfungsfragen und Antworten im Internet ist kostenlos. Was wichtig ist, dass die realen Simulationsübungen Ihnen zum Bestehen der IT Specialist INF-306 Zertifizierungsprüfung verhelfen können. Die Schulungsunterlagen zur IT Specialist INF-306 Zertifizierungsprüfung von It-Pruefung können Ihnen nicht nur Ihre Zeitkosten ersparen , sondern Ihnen helfen, die Prüfung erfolgreich zu bestehen. So haben Sie keine Gründe, It-Pruefung nicht zu wählen.
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