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Network Seminar.

Network Seminar. by jwSeo. OSI 7-Layer. Ethernet. IP. Gateway. DHCP. TCP/IP. DNS. MAC Address. Hurb. Router. Switch. UDP. LAN 이란 ?. : Local Area Network. Networks 란 ?. Internet 은 ?. 어떻게 ? 네트워킹을 할 … 까 ?. Ethernet 은 ?. *CSMA/CD. C arrier S ence M ultiple A ccess

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Network Seminar.

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  1. Network Seminar. by jwSeo

  2. OSI 7-Layer Ethernet IP Gateway DHCP TCP/IP DNS MAC Address Hurb Router Switch UDP

  3. LAN이란? : Local Area Network Networks란? Internet 은?

  4. 어떻게? 네트워킹을 할…까?

  5. Ethernet은? *CSMA/CD Carrier Sence Multiple Access / Collision Detection Ethernet Card?

  6. Ethernet외에도 Token ring등 여러 방식이 있음

  7. *Protocol… IPX TCP/IP UDP

  8. 왜 스타크래프트를할때 IPX로 했을까?

  9. *TCP/IP 네트워크에 접속되는 호스트는 고유의 주소를 가지고 있어서 자신이 속해 있는 네트워크 뿐만 아니라 다른 네트워크에 연결되어 있는 호스트 까지도 서로 데이터를 주고 받을 수 있음 NIC. Internet Protocol http://whois.nic.or.kr

  10. Physical / Fixed / Hardware MAC Address ARP: Address Resolution Protocol IP Address

  11. LanCard는 각자의 MAC을 갖음. ∴ MAC이 중복될 리 없음 BUT What about IP?

  12. DHCP Dynamic Host Configuration Protocol 그 많은 IP주소를 어떻게 관리할까? # ipconfig /all

  13. 물론, DHCP를 사용하지 않고 고정된 IP를 설정해도 상관 없음.

  14. Router IP Address = Network+Host network# + host# Class A (0+7)bit + 24bit2^24=16,777,214 Class B 128.1.x.x ~ 191.254.x.x Class C 192.0.1.x ~ 223.255.254.x

  15. Subnet Mask 1 = network 0 = host

  16. DNS : Domain Name Service http://zetin.uos.ac.kr DNS Server 172.16.166.95 # nslookup

  17. Hurb Switch Router

  18. 7. Application : HTTP, FTP, Telnet 6. Presentation : JPEG, SMB, AFP 5. Session : SSH 4. Transport : TCP, UDP 3. Network : IP, IPX 2. Datalink : Ethernet, TokenRing 1. Physical : Modem, CoxialLine… OSI 7 Layer

  19. # ping # nslookup # ipconfig # tracert # netstat

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