DEFINITIONS AND EXAMPLES

$*$ Circuit switching vs$.$ Packet Switching, sending messages through packet$-$switched network

$*$ HTTP: message format, HTTP methods and headers, requests, responses

$*$ Cookies: $1$st party, $3$rd party, how HTTP sets cookies, cookie architecture $($client $/$ server$),$ how to see in Inspect

$*$ Internet Structure: nuts & bolts view, hierarchy, network of networks, ISPs, access networks, network core, network edge

$*$ Client Server Architecture

$*$ Web cache: architecture, benefits, problems, HTTP support $/$Conditional GET $($client headers and response from server$),$ role of cache