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CCNAv7, Application, Presentation, Session, Transport, Network, DataLInk,…
CCNAv7
Section 1
1OSI và TCP/IP
Application
HTTP, HTTPS, SMTP, SNMP, DNS, DHCP
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Network
(Packet)
Định tuyến gói tin, tìm đường đi tốt nhất
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ARP request
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L2 header: Source A, Dest FFFF
ARP reply
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L2 header: Source B, Dest A
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- Default GW , Default route
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IPv4 vs IPv6
32 bit/ 4 octect
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lớp A: 0 -> 127.0.0.0/8
Lớp B: 128.0.0.0 -> 191.255.0.0/16
Lớp C: 192.0.0.0 -> 223.255.255.0/24
Lớp D: 224.0.0.0 -> 239.0.0.0
Lớp E:240.0.0.0 -> 255.0.0.0
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Application, Presentation, Session, Transport, Network, DataLInk, Physical
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