JavaScript Essentials 1 | JSE1 – Module 1 Test Answers 100%

JavaScript Essentials 1 (JSE) | JSE1 – Module 1 Test Exam Answers Full 100% 2023 2024

This is the JavaScript Essentials 1 (JSE) | JSE1 – Module 1 Test Exam Answers 2023 and 2024 consisting of all questions and answers with a full score of 100% plus explanations. Our experts have received many questions from students day by day and update the answers here in JSE1 – Module 1 Test Exam Answers Cisco NetAcad SkillsForAll. You can practice and review all the questions and answers before you prepare for the exam. If you are unclear about something, you can comment below the page. We are happy to assist you.

1.4 Module 1 Completion – Module Test Exam Answers Full 100% 2023 2024

Entering `about:blank` in the address bar of your browser will:

open a tab with information about your browser.
generate a page with information about the browser’s status and send it to the developer.
reset the browser to its default settings.

generate and load a minimal blank HTML page into the current tab.

Answers Explanation & Hints:

Entering “about:blank” in the address bar of your browser will generate and load a minimal blank HTML page into the current tab. It essentially creates an empty page with no content or specific information. It is commonly used as a starting point or a way to clear the current page and have a blank slate.

The TypeScript language is:

the original name for JavaScript, which has been changed over time.
a new language base on JavaScript which, among other things, introduces static typing.
an alternative name for JavaScript

a variant of JavaScript that is compiled rather than interpreted.

Answers Explanation & Hints:

The TypeScript language is a new language based on JavaScript. It is developed by Microsoft and adds several features to JavaScript, including static typing. TypeScript introduces optional static typing, which allows developers to define types for variables, function parameters, and return values. This provides better tooling, compile-time type checking, and improved code organization and maintainability. TypeScript code is transpiled into plain JavaScript, which can then be run in any JavaScript environment. It is worth noting that TypeScript is not the original name for JavaScript, and it is not an alternative name for JavaScript.

What HTML tag is used to indicate that we are embedding JavaScript code?

<execute>
<script>
<source>

<js>

Answers Explanation & Hints:

The HTML tag used to indicate that we are embedding JavaScript code is the <script> tag. This tag is used to define or reference external JavaScript files or to include JavaScript code directly within an HTML document. Here is an example of how the <script> tag is typically used:

<script>
// JavaScript code goes here
</script>

Alternatively, you can also reference an external JavaScript file by specifying the source using the src attribute within the <script> tag:

<script src="script.js"></script>

In both cases, the JavaScript code within the <script> tag will be executed by the browser.

In the browser, we type into the address bar a string starting with `file:///`. This means that:

the rest of the string is the path to the file on our local computer that we want to open in the browser.
we want the browser to create an empty page for us with the name we give as a continuation of the string.
we want to save the page as a local file.

we do not want to open the page, but only download a file from the remote address and save it on the local machine.

Answers Explanation & Hints:

When typing a string starting with “file:///” in the browser’s address bar, it typically indicates that you want to open a local file on your computer in the browser. The rest of the string after “file:///” represents the path to the file you want to open.

For example, if you type “file:///path/to/file.html” in the address bar, it means you want to open the “file.html” file located at the specified path on your local computer.

It’s important to note that modern browsers often have security restrictions in place that prevent opening arbitrary local files directly from the file system for security reasons. In such cases, you may encounter limitations or security warnings when trying to open local files using the “file:///” protocol.

In a browser, we want to open a local file by typing the path to it in the address bar. The path must be preceded by:

local:///
http://
https://

file:///

Answers Explanation & Hints:

To open a local file in a browser by typing its path in the address bar, the path must be preceded by “file:///”.

For example, if you have an HTML file named “index.html” located at “C:\Users\Username\Documents\index.html”, you would type the following in the address bar:

file:///C:/Users/Username/Documents/index.html

The “file:///” prefix indicates that you want to access a file on the local file system.

Using JavaScript, we want to display the word `"test"` in the console. What statement do we use to do this?

console (log, "test");
console.log("test");
console("test");

log("test");

Answers Explanation & Hints:

To display the word “test” in the console using JavaScript, you would use the statement:

console.log("test");

The console.log() function is a built-in function in JavaScript that outputs a message or value to the console. In this case, it will display the string “test” in the console.

A client-side JavaScript program:

runs directly in a web browser and can contain an HTML document inside it.
may be embedded inside an HTML document or run standalone in the browser.
requires server support to run.

should be embedded inside an HTML document.

Answers Explanation & Hints:

A client-side JavaScript program should be embedded inside an HTML document.

When developing a client-side JavaScript program, it is common practice to embed the JavaScript code within an HTML document. This allows the JavaScript code to interact with the HTML elements and be executed when the HTML document is loaded in a web browser.

JavaScript code can be included in an HTML document using the <script> tag. The <script> tag can be placed in the <head> section or at the end of the <body> section of the HTML document. Here’s an example:

<!DOCTYPE html>
<html>
<head>
<title>Client-side JavaScript Example</title>
<script>
// JavaScript code goes here
</script>
</head>
<body>
<!-- HTML content -->
</body>
</html>

By embedding JavaScript code within the HTML document, you can access and manipulate the HTML elements, respond to events, perform calculations, and perform other client-side operations directly within the browser.

The JavaScript code includes the `console.log("http://test.org");` command. Its execution will:

send a log with information about the currently executed script to the indicated address http://test.org.
display on the console information about the progress of http://test.org page loading.
display the following message on the console: "http://test.org".

cause the page http://test.org to be loaded into the browser.

Answers Explanation & Hints:

The execution of the JavaScript code console.log("http://test.org"); will display the following message on the console: “http://test.org”.

The console.log() function is used to output a message or value to the console for debugging or informational purposes. In this case, the provided message is “http://test.org”. It will not send a log to the indicated address or load the page http://test.org into the browser. It simply logs the string “http://test.org” as a message in the console for you to see during development or testing.

HTML is:

a language for describing the structure of a web page.
one of the data-compression formats.
a scripting language to support mathematical calculations.

a network protocol.

Answers Explanation & Hints:

HTML (HyperText Markup Language) is a language for describing the structure and content of a web page. It is not a data-compression format, a scripting language for mathematical calculations, or a network protocol.

HTML provides a set of tags and elements that define the structure and layout of a webpage. It is primarily used to represent the content and organization of different elements such as headings, paragraphs, images, links, forms, and more. With HTML, you can specify how different elements should be displayed and how they should interact with each other.

In summary, HTML is a markup language used for structuring and presenting content on the web.

The `<html>` tag indicates the start of the actual HTML document. What tag should appear at the end of the document?

<lmth>
</html>
<html/>

<html>

Answers Explanation & Hints:

The correct tag that should appear at the end of an HTML document is </html>. This closing </html> tag marks the end of the HTML document and is used to indicate the completion of the HTML structure.

Here’s an example of a basic HTML document structure:

<html>
<head>
<title>My Webpage</title>
</head>
<body>
<!-- Content of the webpage -->
</body>
</html>

The opening <html> tag at the beginning and the closing </html> tag at the end enclose the entire HTML document. Any HTML content, such as the <head> and <body> sections, should be placed between these tags.

Where will we definitely not be able to execute JavaScript code?

Directly in the processor.
In a server environment using node.js.
On a mobile device.

In a web browser.

Answers Explanation & Hints:

JavaScript code cannot be executed directly in the processor. Processors execute machine code or instructions specific to their architecture, and JavaScript is an interpreted language that requires a JavaScript engine to run.

JavaScript can be executed in various environments, including:

In a server environment using Node.js: Node.js allows executing JavaScript code on the server-side. It provides a runtime environment that enables server-side scripting using JavaScript.
In a web browser: JavaScript is primarily executed in web browsers. Browsers have built-in JavaScript engines that interpret and execute JavaScript code embedded within HTML pages.
On a mobile device: Many mobile devices, such as smartphones and tablets, have web browsers that support JavaScript execution. Mobile web browsers provide JavaScript engine support to run JavaScript code within web pages or mobile web applications.

In summary, while JavaScript cannot be executed directly in the processor, it can be executed in server environments using Node.js, in web browsers, and on mobile devices with JavaScript engine support.

What tag do we use in HTML to denote the main part of the document inside which we define the page elements?

<body>
<head>
<content>

<main>

Answers Explanation & Hints:

The tag used in HTML to denote the main part of the document inside which we define the page elements is the <body> tag.

The <body> tag represents the main content area of an HTML document. It contains all the visible elements of the webpage, such as text, images, links, forms, and more. The content placed within the <body> tag is what is displayed to the user in the web browser.

Here’s an example of how the <body> tag is used:

<!DOCTYPE html>
<html>
<head>
<title>My Webpage</title>
</head>
<body>
<h1>Welcome to my webpage!</h1>
<p>This is the main content area.</p>
<!-- Additional page elements -->
</body>
</html>

In the above example, the main content of the webpage, including the heading <h1> and paragraph <p>, is placed within the <body> tag.

The basic toolkit needed to effectively develop JavaScript code consists of two elements:

interpreter, package manager.
interpreter, debugger.
code editor, interpreter.

code editor, debugger.

Answers Explanation & Hints:

The basic toolkit needed to effectively develop JavaScript code consists of a code editor and an interpreter.

Code Editor: A code editor is a software tool that allows you to write, edit, and manage your JavaScript code. It provides features like syntax highlighting, code completion, formatting, and other productivity-enhancing features. Popular code editors for JavaScript development include Visual Studio Code, Sublime Text, Atom, and JetBrains WebStorm.
Interpreter: An interpreter is responsible for executing JavaScript code. It takes the source code and interprets it line by line, executing the code in real-time. Web browsers have built-in JavaScript engines that act as interpreters, executing JavaScript code directly in the browser. Examples include V8 in Chrome, SpiderMonkey in Firefox, and JavaScriptCore in Safari.

The interpreter ensures that the JavaScript code is executed and produces the expected results. It handles dynamic typing, memory management, and other runtime aspects of JavaScript.

The combination of a code editor for writing and managing code and an interpreter for executing it is fundamental for JavaScript development.

What is not the task of the interpreter?

Transforming the individual commands of the source code into the target form.
Creating a runtime environment for the program.
Verifying the correctness of the program source code (syntax).

Transforming all program code into target code before execution.

Answers Explanation & Hints:

The task of the interpreter does not include transforming all program code into target code before execution.

Interpreters work by executing the program code line by line, transforming each individual command from the source code into executable instructions as it encounters them. The interpreter takes care of executing these instructions directly without prior transformation of the entire program into target code. This is in contrast to compilers, which typically transform the entire program into target code before execution.

The other tasks mentioned are typically associated with interpreters:

Transforming the individual commands of the source code into the target form: Interpreters translate each command or statement in the source code into executable instructions or bytecode as they encounter them during runtime.
Creating a runtime environment for the program: Interpreters set up the necessary runtime environment, including allocating memory, managing variables and objects, handling input and output, and providing the necessary runtime libraries or APIs for program execution.
Verifying the correctness of the program source code (syntax): Interpreters perform syntax checking to ensure that the program adheres to the language’s syntax rules. They identify and report syntax errors in the source code before executing it.

In summary, transforming all program code into target code before execution is not a task performed by interpreters. Instead, interpreters execute the code line by line, transforming individual commands as they encounter them during runtime.

JavaScript Essentials 1 (JSE) | JSE1 – Module 1 Test Exam Answers Full 100% 2023 2024

1.4 Module 1 Completion – Module Test Exam Answers Full 100% 2023 2024

Entering about:blank in the address bar of your browser will:

The TypeScript language is:

What HTML tag is used to indicate that we are embedding JavaScript code?

In the browser, we type into the address bar a string starting with file:///. This means that:

In a browser, we want to open a local file by typing the path to it in the address bar. The path must be preceded by:

Using JavaScript, we want to display the word "test" in the console. What statement do we use to do this?

A client-side JavaScript program:

The JavaScript code includes the console.log("http://test.org"); command. Its execution will:

HTML is:

The <html> tag indicates the start of the actual HTML document. What tag should appear at the end of the document?

Where will we definitely not be able to execute JavaScript code?

What tag do we use in HTML to denote the main part of the document inside which we define the page elements?

The basic toolkit needed to effectively develop JavaScript code consists of two elements:

What is not the task of the interpreter?

Entering `about:blank` in the address bar of your browser will:

In the browser, we type into the address bar a string starting with `file:///`. This means that:

Using JavaScript, we want to display the word `"test"` in the console. What statement do we use to do this?

The JavaScript code includes the `console.log("http://test.org");` command. Its execution will:

The `<html>` tag indicates the start of the actual HTML document. What tag should appear at the end of the document?