osi 7 layer model - computer training in chicago and the chicagoland area
OSI OSI 7 Layer Model 7. Application Layer - DHCP, DNS, FTP, HTTP, IMAP4, NNTP, POP3, SMTP, SNMP, SSH, TELNET and NTPmore) 6. Presentation layer – SSL, WEP, WPA, Kerberos, 5. Session layer – Logical Ports 21, 22, 23, 80 etc… 4. Transport - TCP, SPX and UD...