Network Communication and Protocols

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What is the primary purpose of the Network Layer protocol?

To define how data is delivered from one system to another (correct)

To establish the rules of communication between entities

To provide a service for individual applications to communicate with each other

To initiate a connection using a three-way handshake protocol

What is the main difference between the Network Layer protocol and the Application Layer protocol?

The Network Layer protocol is used for initiating connections, while the Application Layer protocol is used for closing connections

The Network Layer protocol is responsible for error correction, while the Application Layer protocol is responsible for data delivery

The Network Layer protocol is used for establishing connections, while the Application Layer protocol is used for communicating data (correct)

The Network Layer protocol is specific to individual applications, while the Application Layer protocol is a general protocol

What is the purpose of the DNS service?

To assign IP addresses to computers

To provide a protocol for communicating data

To establish a connection between two systems

To map a FQDN to an IP address (correct)

What is the role of the client process in network communication?

To initiate a connection to the server process and send a request Signup and view all the answers

What is the composition of a socket?

A combination of an IP address and a port number Signup and view all the answers

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

To receive and process requests from multiple clients at a time Signup and view all the answers

Which network tool is used to connect to remote hosts and send arbitrary requests?

TELNET Signup and view all the answers

What is the primary function of the NSLOOKUP tool?

To lookup IP addresses of hosts using their FQDN Signup and view all the answers

Which protocol can be demonstrated using TELNET?

Both HTTP and SMTP Signup and view all the answers

What is the purpose of the Packet Internet Groper (PING) tool?

To test connectivity between two hosts Signup and view all the answers

What is the primary purpose of the HTTP RESPONSE?

To indicate whether a request was successful or not Signup and view all the answers

What does the HTTP Response Code 404 indicate?

The resource you are looking for was not found Signup and view all the answers

What is the purpose of the HTTP header in an HTTP RESPONSE?

To provide additional information about the request Signup and view all the answers

What is the purpose of the HTTP protocol?

To request and receive resources over the internet Signup and view all the answers

What is the purpose of the SMTP protocol?

To send emails over the internet Signup and view all the answers

What can be used to demonstrate the HTTP protocol?

TELNET Signup and view all the answers

What are the three parts of an HTTP RESPONSE?

Response Code, Header, and Body Signup and view all the answers

What does the HTTP Response Code 301 indicate?

The resource has permanently moved to another location Signup and view all the answers

What is the purpose of the Body in an HTTP RESPONSE?

To contain the actual response from the server Signup and view all the answers

What is the purpose of the HTTP Response Code?

To indicate whether a request was successful or not Signup and view all the answers

What does the server process do after accepting a client connection?

Establishes a two-way communication channel Signup and view all the answers

What is the purpose of the `java.net.ServerSocket` class?

To represent a server socket Signup and view all the answers

What happens when the `server.accept()` method is called?

The server blocks until a client connection is made Signup and view all the answers

What is the purpose of the `InputStream` object in the context of a server process?

To receive a request from the client Signup and view all the answers

What is the purpose of the `OutputStream` object in the context of a server process?

To send a response to the client Signup and view all the answers

How does the server process initiate the connection closure?

By calling a specific method depending on the protocol Signup and view all the answers

What is the significance of the port number in the `ServerSocket` constructor?

It specifies the network port to listen on Signup and view all the answers

What happens when the server process is created with the statement `ServerSocket server = new ServerSocket(1200)`?

The server process listens on network port 1200 Signup and view all the answers

What is the purpose of the `Socket` object in the context of a server process?

To represent a client socket Signup and view all the answers

What is the significance of the `accept()` method in the context of a server process?

It accepts a client connection Signup and view all the answers

What is the primary characteristic of RESTful APIs that enables better caching and reduces server load?

Stateless nature Signup and view all the answers

What is the primary advantage of using JSON as a data-interchange format?

It is a lightweight format that is easy for humans to read and write, and easy for machines to parse and generate Signup and view all the answers

What is the primary benefit of using RESTful APIs in terms of scalability?

They can handle a large number of requests from a wide range of clients Signup and view all the answers

What is the primary characteristic of RESTful APIs that enables interoperability with different platforms and languages?

Adherence to standard HTTP methods Signup and view all the answers

What is the primary purpose of using Uniform Resource Locator (URL) addresses in RESTful APIs?

To access and manipulate resources using methods such as GET, POST, PUT, PATCH, DELETE 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 Signup and view all the answers

What is the purpose of a JSON Array?

To store a list of values Signup and view all the answers

What is the syntax for enclosing a JSON Object?

Curly braces: {} Signup and view all the answers

Why is a third-party library required to work with JSON objects in Java?

Because JSON is not a built-in Java library Signup and view all the answers

What is an example of a JSON document?

[{"Name":"Student1","Email":"<a href="mailto:[email protected]">[email protected]</a>","Phone":"Student1Phone"},{"Name":"Student2","Email":"<a href="mailto:[email protected]">[email protected]</a>","Phone":"Student2Phone"}] Signup and view all the answers