Answer:
The OSI model layer, function and protocols in each layer.
Explanation:
The OSI networking model has seven layers, they are;
1. Application layer: this is the interface that connects a user to a network, the files or data are generated and seek from this layer. Protocols in this layer are FTP, TFTP, DNS, SMTP, SNMP etc.
2. Presentation layer: it is the sixth layer in the OSI model. It is used to present data in a well organized syntax and format to and application and also for document format encryption. Protocols in this layer are XDR, TLS, SSL and MIME.
3. Session layer: this layer is used to create and terminate sessions between the destination and source node, in a network. Protocols in this layer are PPTP, SAP, L2TP and NETBIOS.
4. Transport layer: this is the fourth layer. It is used for transferring data with or without connection between the destination and source nodes. Protocols in this layer are TCP, UDP, SPX, DCCP and SCTP.
5. Network layer: the packets in this layer are made route- enabled for transfer to nodes within or in remote networks. Protocols in this layer are IP, Apple talk, ICMP, IGMP, IPsec etc.
6. Data-link layer: it sets data for transport by adding or converting the packets to frames. It's protocols are ARP, HDLC, PPP, ATM, SDLS etc.
7. Physical layer: this converts the frames to transportable bits or other forms of transmission signal. The protocols are Bluetooth, Wifi (IEEE 802.11), Ethernet (IEEE 802.3), DSL etc.
