ほとんどの人は勉強中にコンピューターを使用することを好むかもしれませんが、IT Specialistコンピューターで勉強することは目に害を及ぼすと考えているため、多くの人が紙の購入を学びたいと認めている必要があります。CertJuken INF-306テスト問題には、顧客のニーズを満たすために印刷をサポートする機能があります。 正常にダウンロードしたら、INF-306試験問題をHTML5 Application Development論文に印刷できます。 目を保護するだけでなく、メモをとるのに非常に便利です。 INF-306試験準備を気に入っていただけると信じています。
| Section | Objectives |
|---|---|
| Topic 1: CSS Styling | - Layout and responsive design
|
| Topic 2: HTML Fundamentals | - Forms and input elements
|
| Topic 3: JavaScript Programming | - Core JavaScript concepts
|
| Topic 4: Web Application Development Concepts | - Client-side storage
|
ご存じのとおり、競争の激しい世界では、国際的なINF-306認定、実務経験、学歴など、ソフトウェアの能力を向上させる以外に選択肢はありません。したがって、履歴書を強調するためにINF-306証明書を手に入れることは非常に重要であり、職場で成功を収めるのに役立ちます。 INF-306準備資料を使用すると、最も効率的かつ生産的な方法で試験に簡単に合格し、献身と熱意を持って勉強する方法を学ぶことができます。 IT SpecialistのINF-306問題集には多くの利点があります。
質問 # 19
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.
正解：
解説：
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.
質問 # 20
You need to draw a blue rectangle that meets these conditions:
* It is 200 by 200 pixels.
* It contains a white circle that is centered within the rectangle.
* The circle has a 50-pixel radius.
* The image should appear as follows: a blue square with a centered white circle.
Refer to the image on the left.
You need to ensure that the image scales without distortion when the page is resized. You must not be required to use JavaScript.
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 blank: < svg width= " 200 " height= " 200 " >
Second blank: < rect width= " 200 " height= " 200 "
Third blank: < circle cx= " 100 " cy= " 100 " r= " 50 "
Fourth blank: < /svg >
The correct solution uses SVG because SVG graphics are vector-based and can scale without pixel distortion when the page or viewport changes. A < canvas > element would require script-based drawing logic, which violates the requirement that JavaScript must not be required. An < img > or < picture > element can display an image, but those options do not define the rectangle and circle directly in markup. The outer container must therefore be < svg width= " 200 " height= " 200 " > . The blue square is created with < rect width= " 200 " height= " 200 " fill= " blue " / > , which produces a rectangle matching the required 200-by-200 dimensions.
The centered white circle must use SVG circle geometry: cx= " 100 " and cy= " 100 " place the center at the midpoint of the 200-by-200 square, and r= " 50 " creates the required 50-pixel radius. The final closing tag must be < /svg > .
質問 # 21
Which three methods are associated with the HTML5 localStorage API? Choose 3.
正解：B、C、D
解説：
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.
質問 # 22
Review the grid container requirements and mockup on the left. Which markup should you use to define the grid container?
正解：B
解説：
The correct segment is D because named grid-region layouts are defined with grid-template-areas. This CSS Grid property specifies named grid areas, establishes the cells in the grid, and assigns names to those cells.
The syntax requires each row of the grid template to be written as a quoted string, with repeated names indicating that the named area spans multiple columns or rows. In the shown layout, heading spans the entire top row, menu occupies the left column across lower rows, content spans the central area, right occupies the right-side area, and contact spans the bottom content region. Options B and C are incorrect because named grid-area strings do not belong in grid-template-rows or grid-template-columns; those properties define track sizing, not named layout regions. Option A defines explicit column and row sizes but does not define the semantic named areas shown in the mockup. References/topics: CSS Grid, grid containers, named grid areas, grid-template-areas, responsive page layout.
質問 # 23
You need to identify the form elements.
Move the appropriate semantic elements from the list on the left to the correct locations on the right.
Note: You will receive partial credit for each correct response.
正解：
解説：
Explanation:
Club Points indicator # < meter >
Order Status group title # < legend >
Choose delivery frequency options # < datalist >
Shipping Information group box # < fieldset >
Displayed shipping information # < output >
The correct semantic elements are selected according to the role each visible form component performs. The Club Points visual indicator represents a scalar measurement within a known range, so it corresponds to < meter > . The bordered Order Status section is a grouped form region, and the caption displayed on the border is a < legend > , which labels a fieldset-style group. The delivery frequency control shows an editable input with selectable predefined values, which is the purpose of < datalist > : it supplies suggested options for an associated input without forcing the user to choose only from the list. The Shipping Information section is visually and semantically a grouped set of related form information, so the surrounding grouping element is < fieldset > . The displayed shipping address is generated or presented as result-style information rather than typed directly in that location, which matches < output > . fieldset groups related controls, legend labels that group, meter displays a bounded measurement, datalist provides input suggestions, and output displays calculated or resulting information.
質問 # 24
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