Server-Side Computing Model Quiz (Lec4)

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Which programming paradigm does Node.js follow?

Parallel programming
Sequential programming
Asynchronous programming (correct)
Synchronous programming

What is the primary purpose of asynchronous programming in Node.js?

To improve the performance of I/O operations
To handle a large amount of requests (correct)
To make the code execute in sequence
To block I/O resources

What are I/O operations in Node.js primarily related to?

Interacting with the CPU
Interacting with the system's disk and network (correct)
Accessing memory (RAM)
Making HTTP requests

Why are I/O operations considered slow in Node.js?

They are time-consuming (A) Signup and view all the answers

What is the main disadvantage of synchronous programming in Node.js?

It is time-consuming (A) Signup and view all the answers

What are callback functions used for in Node.js?

To handle asynchronous code execution (B) Signup and view all the answers

In-class Exercises Ex 1: What is Node.js primarily used for?

Developing server-side and networking applications (A) Signup and view all the answers

In-class Exercises Ex 2: Which of the following is NOT a feature of Node.js?

Synchronous programming (A) Signup and view all the answers

In-class Exercises Ex 3: What is the main advantage of asynchronous programming in Node.js?

It allows multiple operations to be handled simultaneously (A) Signup and view all the answers

In-class Exercises Ex 4: What is the purpose of the callback function in Node.js asynchronous programming?

It is used to handle the result of an asynchronous operation (B) Signup and view all the answers

What is the typical convention of callback functions in Node.js?

Error is the first parameter, callback is the last parameter (C) Signup and view all the answers

What is the purpose of the package.json file in a Node.js app?

To define the dependencies and startup script of the app (D) Signup and view all the answers

Which of the following is a client in the context of HTTP?

A web browser (C) Signup and view all the answers

What does HTTP stand for?

Hypertext Transfer Protocol (D) Signup and view all the answers

Which of the following is true about HTTP headers?

They carry information about the client browser, the requested page, and the server (B) Signup and view all the answers

What is the purpose of the HTTP status code in a response?

To provide information about the status of the request (D) Signup and view all the answers

Which of the following tools can be used to check HTTP headers and responses?

Live HTTP Headers (B) Signup and view all the answers

What is the purpose of the HTTP request method 'GET'?

To retrieve data from a server (A) Signup and view all the answers

What does the HTTP response status code '200 OK' indicate?

The request was successful (A) Signup and view all the answers

What is the role of the server in the context of HTTP?

To receive and process HTTP requests from clients (D) Signup and view all the answers

In Node.js, what is the purpose of a callback function in asynchronous programming?

The purpose of a callback function in asynchronous programming in Node.js is to handle the result of an asynchronous operation. Signup and view all the answers

What is the main advantage of asynchronous programming in Node.js?

The main advantage of asynchronous programming in Node.js is that it allows multiple operations to be handled simultaneously. Signup and view all the answers

What is the role of a callback function in a callback function?

The role of a callback function in a callback function is to be passed as an argument into another function and then invoked (called back) inside the outer function. Signup and view all the answers

What is the primary purpose of asynchronous programming in Node.js?

The primary purpose of asynchronous programming in Node.js is to handle a large amount of requests efficiently. Signup and view all the answers

What are the main advantages of asynchronous programming in Node.js?

The main advantages of asynchronous programming in Node.js are scalability, as it allows the program to continue executing other tasks while waiting for I/O operations to complete, and improved performance, as it avoids blocking the program during I/O operations. Signup and view all the answers

What are the main disadvantages of synchronous programming in Node.js?

The main disadvantages of synchronous programming in Node.js are overhead when creating new stacks and execution environment, time-consuming completion of I/O operations, and difficulties in scaling up. Signup and view all the answers

What is the purpose of HTTP headers in a request and response?

HTTP headers carry information about the client browser, the requested page, the server, and more. They provide additional metadata and instructions for the client and server to communicate effectively. Signup and view all the answers

What are some examples of HTTP methods?

Some examples of HTTP methods are GET and POST. GET is used to retrieve data from a server, while POST is used to send data to a server. Signup and view all the answers

What is the role of the server in the context of HTTP?

The server is responsible for receiving HTTP requests from clients, processing them, and returning appropriate HTTP responses. Signup and view all the answers

What is the purpose of the HTTP status code in a response?

The HTTP status code provides information about the status of the request. It indicates whether the request was successful, redirected, or encountered an error. Signup and view all the answers

Server-Side Computing Model Quiz (Lec4)

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Questions and Answers

Which programming paradigm does Node.js follow?

What is the primary purpose of asynchronous programming in Node.js?

What are I/O operations in Node.js primarily related to?

Why are I/O operations considered slow in Node.js?

What is the main disadvantage of synchronous programming in Node.js?

What are callback functions used for in Node.js?

In-class Exercises Ex 1: What is Node.js primarily used for?

In-class Exercises Ex 2: Which of the following is NOT a feature of Node.js?

In-class Exercises Ex 3: What is the main advantage of asynchronous programming in Node.js?

In-class Exercises Ex 4: What is the purpose of the callback function in Node.js asynchronous programming?

What is the typical convention of callback functions in Node.js?

What is the purpose of the package.json file in a Node.js app?

Which of the following is a client in the context of HTTP?

What does HTTP stand for?

Which of the following is true about HTTP headers?

What is the purpose of the HTTP status code in a response?

Which of the following tools can be used to check HTTP headers and responses?

What is the purpose of the HTTP request method 'GET'?

What does the HTTP response status code '200 OK' indicate?

What is the role of the server in the context of HTTP?

In Node.js, what is the purpose of a callback function in asynchronous programming?

What is the main advantage of asynchronous programming in Node.js?

What is the role of a callback function in a callback function?

What is the primary purpose of asynchronous programming in Node.js?

What are the main advantages of asynchronous programming in Node.js?

What are the main disadvantages of synchronous programming in Node.js?

What is the purpose of HTTP headers in a request and response?

What are some examples of HTTP methods?

What is the role of the server in the context of HTTP?

What is the purpose of the HTTP status code in a response?

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