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Graphics Interchange Format  |  1998-02-10  |  38.6 KB  |  407x286  |  4-bit (16 colors)
   ocr: IPA ADDRESSING FORMATS Two-level hierarchy Network address portion Host address portion Three-evell hierarchy Network address portion Subnet address Host adoress portion portion Figure 2: Tbe ruo-levet bierarchy of addresses becomes # toree-level hierarchy mber subnetting is used.