November 2023
Intermediate to advanced
648 pages
17h 44m
English
Content preview from Cisco Certified Support Technician CCST Networking 100-150 Official Cert Guide
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Part III
Services
As exciting as addressing, formatting, and carrying data around in packets, the purpose of a computer network is to provide and enable real-world services. Networks use addressing, routing, cables, and wireless signals to carry four kinds of services through the local and wide areas.
Packet transport is the most basic service that networks provide. Transmitters need to format data so the network can carry it and receivers can understand it. Chapter 6, “Network Models,” noted formatting data is called marshaling in the Recursive InterNetwork Architecture (RINA) model.
Networks transport packets from host to host, so this is a “middle layer” construction.
Application transport services are built on packet transport systems. At ...
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