Internet e Web

di Alberto Marinelli – Enciclopedia della Scienza e della Tecnica (2008)

Internet e Web

In senso tecnico Internet è un network di computer-network: è infatti costituita da una serie di reti (private, pubbliche, aziendali, universitarie, commerciali) connesse tra loro fino a raggiungere una dimensione di accesso globale. Le reti sono interconnesse in senso fisico (wired e wireless) e in senso logico (distributed network); trasportano i dati e li indirizzano su una pluralità di dispositivi terminali (host, end system; dunque non solo computer in senso stretto) facendo ricorso a un medesimo gruppo di protocolli, l’Internet protocol suite. L’Internet protocol (IP) identifica i nodi della rete, mentre il trasporto viene generalmente gestito mediante uno standard di commutazione a pacchetto (packet switching).

Lo sviluppo delle reti. Mario Gerla, uno scienziato italiano scomparso di recente

Mario Gerla

From Wikipedia, the free encyclopedia

Mario Gerla (1943-2019) was an Italian computer scientist and engineer, Distinguished Professor, Jonathan B. Postel Chair and Chair of the Department of Computer Science of University of California, Los Angeles (UCLA),^[1] and a published author. He hard co-authored over 10 books that are held in 1,259 libraries, with the highest held book in 264 libraries worldwide.^[2] He attended and graduated with an engineering degree from Polytechnic University of Milan and received his Master’s and Ph.D. degrees in Computer Science from UCLA, studying under faculty advisor Leonard Kleinrock. He joined the UCLA faculty in 1976. At UCLA, he was the director of Center for Autonomous Intelligent Networks and also Network Research Lab.^[1]

Gerla was elected as an ACM Fellow in 2018 for “contributions to design and analysis of mobile wireless protocols for vehicular safety and traffic applications”.^[3]

collegamenti:

Infrastrutture di internet Around the World in Submarine Internet Cable

Submarine Cables: The Invisible War – Mapping the World