Question

which of the following is an example of a web browser? 4 points google chrome google search facebook router describe what happens when you enter a website address (url) into your 4 points browser. your answer explain how data travels from one computer to another using the internet. 4 points your answer why is internet security important? give an example of a security threat and how it can be prevented. 4 points your answer what is the role of the domain name system (dns) and why is it

Explanation:

1. A web - browser is a software application for accessing information on the World Wide Web. Google Chrome is a well - known web browser. Google Search is a search engine, Facebook is a social media platform, and a router is a networking device.
2. When you enter a URL into your browser: First, the browser sends a request to the DNS (Domain Name System) to translate the domain name in the URL into an IP address. Then, it establishes a connection with the web server hosting the website using the IP address and sends an HTTP (or HTTPS) request for the page. The server responds with the requested content, which the browser then renders.
3. Data travels from one computer to another on the internet through a process of packet - switching. The data is broken into small packets, each with a source and destination IP address. These packets are then routed through a network of routers and other networking devices until they reach the destination computer, where they are reassembled into the original data.
4. Internet security is important to protect sensitive information such as personal data, financial information, and business secrets from unauthorized access, theft, or damage. An example of a security threat is a malware (like a virus). It can be prevented by using antivirus software, keeping the operating system and applications up - date, and being cautious when downloading files or clicking on links.
5. The Domain Name System (DNS) is like the phonebook of the internet. Its role is to translate human - readable domain names (e.g., example.com) into IP addresses (e.g., 192.0.2.1) that computers use to communicate with each other on the network. It is important because it makes it easier for users to access websites without having to remember long strings of numbers.

Answer:

1. A. Google Chrome
2. When you enter a URL, the browser first queries the DNS to get the IP address of the web - server. Then it establishes a connection with the server and sends an HTTP/HTTPS request. The server responds with the page content which the browser renders.
3. Data is broken into packets with source and destination IPs. Routers route these packets through the network until they reach the destination computer where they are reassembled.
4. Internet security protects sensitive info. Malware is a threat. Prevention includes using antivirus, updating software, and being cautious.
5. DNS translates domain names to IP addresses. It is important as it makes website access user - friendly.