Photo AI
A company moves its business online - Edexcel - GCSE Computer Science - Question 7 - 2021 - Paper 1
Question 7
A company moves its business online. (a) Identify one way in which a WAN differs from a LAN. (b) An employee accesses her work email using a smartphone and a lapto... show full transcript
Worked Solution & Example Answer:A company moves its business online - Edexcel - GCSE Computer Science - Question 7 - 2021 - Paper 1
Step 1
Step 2
Explain why the IMAP protocol is more suitable for this than the POP3 protocol.
Answer
IMAP (Internet Message Access Protocol) is more suitable as it allows users to access their emails from multiple devices while keeping the emails on the server. In contrast, POP3 (Post Office Protocol) downloads emails to a single device and often deletes them from the server, limiting accessibility.
Step 3
Describe the role of the transmission control protocol (TCP).
Answer
The Transmission Control Protocol (TCP) is a key component of internet communication, responsible for ensuring the reliable transmission of data. It establishes a connection between sender and receiver, breaks down the data into packets, and guarantees that packets are delivered in order and without errors through acknowledgments and retransmissions.
Step 4
Describe the role of a server in a client-server network.
Answer
In a client-server network, a server responds to incoming client requests by supplying a service or resource. It stores and delivers data or files, manages requests, and provides functionalities like database access or print services.
Step 5
Draw lines to show how all these devices would be connected using a bus topology.
Answer
To indicate a bus topology, draw a single horizontal line representing the bus. Then, connect each device (laptops, printer, and server) to this line with single lines, ensuring no device is directly connected to each other, but rather all connect to the bus.