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분야
pptx2. Domain Name System(DNS)
3. Electronic Mail(E-mail)
4. World Wide Web(WWW)
5. File Transfer Protocol(FTP)
6. Simple Network Management Protocol(SNMP)
7. Voice over IP(VoIP)
8. Streaming
9. Peer-to-Peer Application(P2P)
* 포트번호 카테고리 :
The well known port from 0 ~ 1023
The Registered Ports from 1024 ~ 49151
The Dynamic and/or Private Ports from 49152 through 65535
대다수의 유닉스와 리눅스 기반에서는 서버 수행은 단독 혹은 슈퍼 데몬이라 불리는 (x) intend에 의해서 작동된다.
STAND ALONE 모드 :
데몬은 독립적으로 실행되며 항상 메모리에 상주하여
서비스 요청이 있을 때 언제든 바로 응답.
“ 즉, 빠른 응답속도를 필요로 하는 경우에
이 모드를 이용한다!! ”
단점)
∙ 메모리에 항상 상주해 있으므로, 메모리 점유로
인한 서버 부하를 줌.
∙ 슈퍼 데몬도 standalone모드로 실행 됨
