AQA A-Level Computer Science - The
Internet Exam With 100% Correct
Answers
The Internet - correct answers ✔✔A network of interconnected computer networks.
- Mostly wired network
- Has cables that pass under oceans to connect different continents.
Internet Service Provider (ISP) - correct answers ✔✔A company that provides its customers with
access to the internet.
Explain the process of Packet switching - correct answers ✔✔- Firstly, a message is split into
multiple packets.
- Each packet is then sent to its recipient via the best possible route.
- They pass through a number of routers before they reach their destination.
- The router uses their recipients address to determine where to send the packets
- Once it has finally reached the recipient it's will be reassembled.
Packet - correct answers ✔✔A container that data is stored in to be transmitted over networks.
- They contain both the sender and recipients addresses
- They contain information for the intended recipient
- They contain TTL (Time to Live)
- Sequence number
Sequence Number - correct answers ✔✔- Allows packets to be reassembled in the correct
order.
Internet Exam With 100% Correct
Answers
The Internet - correct answers ✔✔A network of interconnected computer networks.
- Mostly wired network
- Has cables that pass under oceans to connect different continents.
Internet Service Provider (ISP) - correct answers ✔✔A company that provides its customers with
access to the internet.
Explain the process of Packet switching - correct answers ✔✔- Firstly, a message is split into
multiple packets.
- Each packet is then sent to its recipient via the best possible route.
- They pass through a number of routers before they reach their destination.
- The router uses their recipients address to determine where to send the packets
- Once it has finally reached the recipient it's will be reassembled.
Packet - correct answers ✔✔A container that data is stored in to be transmitted over networks.
- They contain both the sender and recipients addresses
- They contain information for the intended recipient
- They contain TTL (Time to Live)
- Sequence number
Sequence Number - correct answers ✔✔- Allows packets to be reassembled in the correct
order.
