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The IP address 192.149.119.226 is linked to the website with a URL of https://www.ocr.org.uk - OCR - GCSE Computer Science - Question 5 - 2019 - Paper 1
Question 5
The IP address 192.149.119.226 is linked to the website with a URL of https://www.ocr.org.uk. (a) When https://www.ocr.org.uk is entered into a browser, the website... show full transcript
Worked Solution & Example Answer:The IP address 192.149.119.226 is linked to the website with a URL of https://www.ocr.org.uk - OCR - GCSE Computer Science - Question 5 - 2019 - Paper 1
Step 1
Describe the relationship between the website URL (https://www.ocr.org.uk), the IP address and the webserver.
Answer
The URL (Uniform Resource Locator) serves as a user-friendly address that allows individuals to access a specific resource on the internet. When a web browser is used to enter the URL 'https://www.ocr.org.uk', the browser converts this URL into an IP address—specifically '192.149.119.226' in this case—through a process known as DNS (Domain Name System) resolution.
The IP address identifies the web server hosting the content for that URL. This server contains the website’s files and responds to the browser's request by sending the relevant web pages back. Thus, the URL and the IP address work together to facilitate user access to the web server and deliver the desired content.
Step 2
Explain why the TCP/IP model uses layers.
Answer
The TCP/IP model uses layers to promote modularity and simplify networking. By separating different networking functions into layers, each layer can operate independently and be developed or modified without impacting the others.
This layered approach helps to manage complexity by structuring how data is transmitted and received, allowing for easier troubleshooting and standardization of protocols. For instance, the application layer provides the interface for user applications, while the transport layer handles the transmission of data across the network. This separation enhances flexibility, interoperability, and efficiency in network communications.
Step 3
Give the name of one appropriate protocol for each task in the table.
Answer
| Task | Protocol for this task |
|---|---|
| Sending an email from one mail server to another | SMTP |
| Transmitting a file from a client to a server | FTP |
| Viewing a website using a web browser | HTTP or HTTPS |
| Downloading an email to your computer | POP or IMAP |