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Naomi’s office has five computers connected into a Local Area Network (LAN) - OCR - GCSE Computer Science - Question 6 - 2020 - Paper 1
Question 6
Naomi’s office has five computers connected into a Local Area Network (LAN). There is also one printer that all the devices can print to. (a) The LAN is set up as a... show full transcript
Worked Solution & Example Answer:Naomi’s office has five computers connected into a Local Area Network (LAN) - OCR - GCSE Computer Science - Question 6 - 2020 - Paper 1
Step 1
Draw connections to show one way that the devices could be connected using a mesh topology.
Answer
To represent a mesh topology for five computers and one printer, each device should be connected directly to every other device.
For example:
- Computer 1 is connected to Computer 2, Computer 3, Computer 4, Computer 5, and the Printer.
- Computer 2 is connected to Computer 1, Computer 3, Computer 4, Computer 5, and the Printer.
- This continues for all computers and the printer, demonstrating a fully connected network.
Step 2
Tick one box in each row to identify if the statement about Ethernet is True or False.
Answer
| Statement | True | False |
|---|---|---|
| Ethernet is a protocol | ✓ | |
| Ethernet uses wireless data transmission | ✓ | |
| Ethernet can transmit data at speeds of up to 100 Gigabits per second | ✓ | |
| Ethernet is a protocol within the TCP/IP stack | ✓ |
Step 3
Explain how the URL www.ocr.org.uk is converted into the IP address.
Answer
When Computer 1 enters the URL www.ocr.org.uk into a web browser, the following steps occur:
- Domain Name System (DNS) Lookup: The browser checks a local cache for the IP address associated with the domain. If it’s not found, a DNS query is sent to a DNS server.
- Resolution Process: The DNS server resolves the domain name to an IP address by searching its records or querying other DNS servers until it finds the corresponding IP.
- Returning the IP Address: The IP address is returned to the browser, enabling it to communicate with the web server hosting the website.
Step 4