2. What does each packet contain?
3. Some packets may also have a trailer to detect transmission errors.
5. Older telephone networks use circuit switching. What does this mean?
6. Why is packet switching more efficient than circuit switching?
7. Packets can be sent along completely different routes and reassembled by the recipient.
8. What devices forward packets from one network to another?
9. When would a gateway be needed?
10. Every device that can be connected to a network has a unique MAC address. MAC stands for…
11. Packet switching is the method by which the internet works, it features …………………………..between devices over a shared network.
12. To get from one device to another the _________ will have to travel through network adapters, switches, routers and other network nodes.
13. If you play computer games online you might have heard the term latency (or lag), this is ….
14. To see the time it takes to send a message using packet switching you can use the ping command on the command prompt.
15. Packet switching defines just one set route for data to be sent by so any disruption in the network cannot be circumnavigated by re-routing
16. The following are the steps involved in packet switching. Fill in the blanks
17. For the following packets (Green, Blue, Red), assuming each step from router to router takes an equal time. Answer the question below.
18. What happens if a packet gets permanently lost on the way to a host?
19. What happens if a router on the network fails? How will the packets get to their destination?
20. With packet switching, every request that gets sent over the internet is sent with the sender's IP address attached
21. Circuit switching was the alternative to packet switching where there was one dedicated line. The advantages of packet switching include:
22. Disadvantages of packet switching include:
23. Read the following excerpt which discusses the future of packet switching and big questions. Define the term 'packet'
24. Packets can be defined as 'data' that is sent over a network in manageable amounts
25. Data packets are usually less than 128 KB and contain details of the destination computer.