近年、社会の急速な発展に伴って、IT業界は人々に爱顾されました。IT Specialist INF-306IT認定試験を受験して認証資格を取ることを通して、IT事業を更に上がる人は多くになります。そのときは、あなたにとって必要するのはあなたのIT Specialist INF-306試験合格をたすけってあげるのCertShikenというサイトです。CertShikenの素晴らしい問題集はIT技術者が長年を重ねて、総括しました経験と結果です。先人の肩の上に立って、あなたも成功に一歩近付くことができます。
| Section | Objectives |
|---|---|
| Topic 1: CSS Styling | - Selectors and styling rules
|
| Topic 2: HTML Fundamentals | - Document structure and semantics
|
| Topic 3: Web Application Development Concepts | - Client-side storage
|
| Topic 4: JavaScript Programming | - DOM manipulation
|
INF-306試験に合格したい場合、INF-306練習問題は欠席できない基本的な試験資料です。 忠実なお客様からは、INF-306練習教材の合格率がこれまでに98〜100％に達していることが証明されています。 また、INF-306試験トレントの無料アップデートが1年間無料でメールボックスに送信されます。INF-306練習資料の使用中に素晴らしい経験ができることを願っています。
質問 # 16
You want to display a message box showing the user ' s current latitude and longitude as identified by the user' s browser.
Complete the code by selecting the correct option from each drop-down list.
Note: You will receive partial credit for each correct selection.
正解：
解説：
Explanation:
First drop-down: navigator.geolocation
Second drop-down: navigator.geolocation
Third drop-down: getCurrentPosition(showLocation)
The correct API object is navigator.geolocation because browser-based geographic location is exposed through the Geolocation API, not through window.location. window.location represents the current page URL and navigation state; it does not provide latitude or longitude. The first selection checks whether the browser supports geolocation by evaluating navigator.geolocation. Inside the block, the same object must be used to request the user's current position. The correct method is getCurrentPosition(showLocation), which requests the device's current location and passes a position object to the callback function when the location is available. The callback then reads position.coords.latitude and position.coords.longitude and displays those values with alert(). The alternatives that pass window.location are incorrect because they provide page- location information rather than geographic coordinates. The alternatives that call showLocation(...) directly are also incorrect because the browser must first retrieve the actual position object. References/topics:
Geolocation API, navigator.geolocation, getCurrentPosition(), callback functions, latitude and longitude.
質問 # 17
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?
正解：C
解説：
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.
質問 # 18
You need to display the following user interface:
A text input field that displays a selectable suggestion list containing:
Motorcycle
Truck
Boat
Car
Bicycle
正解：
解説：
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.
質問 # 19
Which JavaScript method is used to draw a circle on a canvas?
正解：C
解説：
The correct method is arc(). In the Canvas 2D API, circles and circular arcs are drawn by creating an arc path on the canvas rendering context. MDN defines CanvasRenderingContext2D.arc() as creating a circular arc centered at (x, y) with a specified radius, start angle, end angle, and drawing direction. To draw a full circle, the common pattern is to call beginPath(), then arc(x, y, radius, 0, 2 * Math.PI), and then use stroke() or fill() to render the path. There is no standard Canvas 2D method named circle(), so option A is invalid. ellipse() can draw ellipses and can mathematically draw a circle if both radii are equal, but the classic and exam-targeted method for drawing a circle is arc(). bezierCurveTo() draws cubic Bezier curves and is used for custom curved paths, not the direct circle primitive. References/topics: Canvas 2D context, arc() method, drawing circles, radians, path rendering.
質問 # 20
Match each stage of Application Lifecycle Management to the task that occurs during that stage.
Move each stage from the list on the left to the correct task on the right.
Note: You will receive partial credit for each correct match.
正解：
解説：
Explanation:
Application Lifecycle Management organizes website creation into ordered stages that move from intent to implementation and long-term support. The Plan stage comes first because it establishes why the website exists, who the audience is, and what goals the application must satisfy. The Design stage converts those requirements into structure, including page layout, navigation, interface organization, and visual arrangement.
The Develop stage is where the website is built by writing HTML markup, CSS styling, JavaScript behavior, and integrating required assets or APIs. The Test stage evaluates whether the completed website functions correctly and is usable according to requirements; this includes checking features, layout behavior, validation, and user workflows. The Deploy stage publishes the finished website to the target hosting or production environment so users can access it. Finally, the Maintain stage occurs after release and includes monitoring, updating, fixing defects, improving compatibility, and keeping content or functionality current. References
/topics: application lifecycle management, planning, design, development, testing, deployment, maintenance.
質問 # 21
......
当社の製品を使用する場合、INF-306試験に合格することは非常に簡単だと思います。もちろん、不運にも試験に合格しなかったとしても、心配する必要はありません。経済的な補償のメカニズムが作成されているからです。テストドキュメントとトランスクリプトを提供するだけで、INF-306準備トレントはすぐに全額返金され、お金を失うことはありません。さらに重要なことは、INF-306試験トレントを購入することに決めた場合、割引を差し上げます。INF-306試験の準備に費やす費用と時間を削減します。
INF-306合格体験記: https://www.certshiken.com/INF-306-shiken.html