Avirtual(71)network,orVPN,isanencryptedconnectionovertheInternetfromadevicetoanetwork.Theencryptedconnectionhelpsensurethatsensitivedataissafely(72).Itprevents(73)peoplefromeavesdroppingonthetrafficandallowstheusertoconductworkremotely.TrafficonthevirtualnetworkissentsecurelybyestablishinganencryptedconnectionacrosstheInternetknownasa(74).AremoteaccessVPNsecurelyconnectsadeviceoutsidethecorporateoffice.Asite-to-siteVPNconnectsthecorporateofficetobranchofficesovertheInternet.Site-to-siteVPNsareusedwhendistancemakesitimpracticaltohavedirectnetworkconnectionsbetweentheseoffices.Thinkofsite-to-siteaccessas(75)tonetwork.
A.channel正确答案C
B.path
C.tunnel
D.route
