Computer networks are harder to remember

1. The network interconnection layer protocols in the TCP/IP reference model include IP, ICMP, IGMP, BGP, OSPE, RIP
2. Computer network protocols include: HTTP, IP, TCP, ARP
3. The maximum bandwidth of the access link of the telephone dial-up access method is 56 kbit/s
4. The basic unit of rate is bit/s
5. The world's first network architecture was proposed by IBM in 1974 and named as System Network Architecture'
6. In the OSI reference model, the data transmission unit of the data link layer is called a frame
7. The path selection function is completed at the network layer of the OSI reference model
8. Communication services are divided into two categories "connection-oriented services and connectionless services"
9. The first network switching method used on ARPAnet is packet switching
10. In the OSI reference model, the protocol data unit is usually called the ancestor of the network layer
11. TCP/IP is synonymous with a set of protocols. Generally speaking, IP provides network layer services
12. The communication between the two parties first establishes a physical channel and the network switching method that monopolizes the channel during the communication is: circuit switching
13. The topology that can be used as a point-to-point line communication subnet or as a broadcast communication subnet is a tree topology
14. The layer responsible for end-to-end communication between application processes in the TCP /IP reference model is the transport layer
15. The OSI reference model provides end-to-end connection services between application processes in the transport layer
16. The network topology widely used in wide area networks is mesh topology.
17. In the OSI reference model, the physical layer characteristics that specify the data exchange control steps are the procedural characteristics

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