Task 12. Mark the following statements as True or False.
1. Most of the work that an application does to prepare a message for sending over a network is not seen by the user.
2. ASCII is always used to transmit data.
3. The encryption layer compresses the message.
4. The network layer keeps track of how many packets are in each message.
5. The network layer keeps a copy of each packet until it arrives at the next node undamaged.
6. Analogue signals are used on ordinary telephone lines.
7. When a message arrives at its destination, it passes through the same seven network communications layers as when it was sent, but in reverse order.

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