1.5 Network topologies, protocols and layers

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1.5.1 Star and mesh network topologies  1.5.1
1.5.2 Wifi:
1.5.2a frequency and channels
1.5.2b encryption
1.5.2c ethernet
1.5.3 The uses of IP addressing, MAC addressing, and protocols including:
1.5.3a TCP/IP (Transmission Control Protocol/Internet Protocol)
1.5.3b HTTP (Hyper Text Transfer Protocol)
1.5.3c HTTPS (Hyper Text Transfer Protocol Secure)
1.5.3d FTP (File Transfer Protocol)
1.5.3e POP (Post Office Protocol)
1.5.3f IMAP (Internet Message Access Protocol)
1.5.3g SMTP (Simple Mail Transfer Protocol)
1.5.4 The concept of layers  1.5.4
1.5.5 Packet switching  1.5.5