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CSC123: Intro to Programming II - Client-Server Communication

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CSC123: Intro to Programming II - Client-Server Communication

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Questions and Answers

What is the primary role of the java.net.Socket class in networking?

To open network connections to remote servers as a client (correct)
To act as a server and accept connections from clients
To define the structure of HTTP requests and responses
To manage the protocol used for communication between clients and servers

What is the primary purpose of the User-Agent header in HTTP?

To authenticate the client's credentials
To specify the host part of the URL
To inform the server about the type of web browser the client is using (correct)
To specify the type of content being returned

What is the meaning of the HTTP status code 401?

The client's request was not according to protocol
The server is not ready to service the client's request
The requested resource was not found on the server
The client needs to login and provide credentials (correct)

What is the function of the resource part in an HTTP URL?

To identify the specific resource being requested, such as a text or image file (D) Signup and view all the answers

What is the purpose of the Set-Cookie header in HTTP?

To store information on the client for future requests (D) Signup and view all the answers

What is the meaning of the HTTP status code 503?

The server is not ready to service the client's request (C) Signup and view all the answers

What is the role of the client process in a client-server architecture?

To request a service from a server process (C) Signup and view all the answers

What is the primary function of a server process in a network?

To listen on a predefined network port for client connections (C) Signup and view all the answers

What is the purpose of the ServerSocket class in Java?

To represent a server socket (A) Signup and view all the answers

What is the purpose of the accept() method in a Java server program?

To block until a client connection is made (A) Signup and view all the answers

What is the main advantage of using JSON in data interchange?

It is easy for humans to read and write, and easy for machines to parse and generate (B) Signup and view all the answers

What is the primary characteristic of JSON data?

It is language-independent and can be used with any programming language. (B) Signup and view all the answers

What is a JSON array?

A simple structure that holds a list of items, enclosed in square brackets. (C) Signup and view all the answers

What is the purpose of a JSON library in Java?

To convert JSON data to native data types in Java. (C) Signup and view all the answers

What is a JSON document?

A combination of JSON arrays and JSON objects. (D) Signup and view all the answers