Internet address
Consists of 4 bytes separated by periods
-The R first bytes (R= 1,2,3) correspond to the network address;
-The remaining H bytes (H = 3,2,1) are used for the host machine.
-InterNIC Register: organization in charge of the allocation of the
address ranges corresponding to networks.
-Criteria considered:
Geographical area (country)
→ Organization, enterprise
→ Department
→ Host
Domain Name System (DNS)
-Mnemonic textual addresses are provided to facilitate the manipulation
of internet addresses.
-DNS servers are responsible for translating mnemonic textual Internet
addresses into hard numeric Internet addresses.


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