=OSI 7 Layer=
 * Application : ì‚¬ìš©ìžì—ê²Œ ìœ ìš©í•œ ë°ì´í„°
  * HTTP, FTP, DNS, TELNET
 * Presentation : ë°ì´í„° í¬ë§·, ì••ì¶•, ì•”í˜¸í™”
  * JPEG, MPEG
 * Session : ì¸ì¦ ê¶Œí•œ, ì„¸ì…˜ ë³µì›
  * SSH, TLS
 * Transport : host ì‚¬ì´(end-to-end)ì˜ í†µì‹ 
  * TCP, UDP, SSL
 * Network : Addressing, Routing
  * IP,ARP,ICMP
 * Data Link : ë¦¬í¬ë¡œ ì—°ê²°ëœ ë…¸ë“œ ì‚¬ì´
  * Ethernet, 802.11, PPP
 * Physical : ë¬¼ë¦¬ì ì¸ ì‹ í˜¸
  * Ethernet, 802.11

== êµ¬í˜„ ìœ„ì¹˜ ==
 * Application(process) : Application, Presentation, Session
 * Operating System : Transport, Network
 * Network Adapter : Data Link, Physical

 * ì‹¤ì œë¡œëŠ” 5ë‹¨ê³„ë¡œ ë§Žì´ êµ¬í˜„ : Presentation, Session ì„ ë¹¼ê³  ë‚˜ë¨¸ì§€ ê³„ì¸µ