▁networking ▁( SD N ), ▁to ▁facil itate ▁communication ▁between ▁the ▁physical ▁devices , ▁the ▁SD N ▁software ▁and ▁applications ▁running ▁on ▁the ▁network . ▁ ▁References ▁ ▁Category : Network ▁architecture ▁Category : Comput er ▁networking ▁Category : Comput er ▁architecture <0x0A> </s> ▁C asc um pec ▁Bay ▁is ▁within ▁Prince ▁Edward ▁Island ▁in ▁Canada ▁and ▁is ▁adjacent ▁to ▁the ▁G ulf ▁of ▁Saint ▁Lawrence . ▁ ▁Description ▁C asc um pec ▁Bay ▁is ▁located ▁where ▁Prince ▁Edward ▁Island ' s ▁north ▁shore ▁at ▁its ▁north western ▁extreme ▁turns ▁n ort he aster ly ▁to ▁become ▁the ▁east ▁shore ▁of ▁the ▁island ' s ▁N ortheast ▁Pen ins ula . ▁ ▁The ▁bay ▁covers ▁an ▁area ▁of ▁approximately ▁ ▁and ▁is ▁relatively ▁shall ow . ▁ ▁C asc um pec ▁Bay ▁front s ▁the ▁G ulf ▁of ▁Saint ▁Lawrence ▁along ▁its ▁eastern ▁side ▁but ▁is ▁protected ▁from ▁g ulf ▁by ▁a ▁series ▁of ▁sand y ▁bar rier ▁islands . ▁ ▁Most ▁of ▁the ▁protection ▁is ▁provided ▁by ▁the ▁C asc um pec ▁Sand ▁Hills , ▁a ▁single ▁long ▁bar rier ▁island ▁given ▁its ▁name ▁because ▁of ▁its ▁extensive ▁sand ▁d unes . ▁ ▁Several ▁est u aries ▁are ▁located ▁along ▁the ▁land ward ▁sides ▁of ▁the ▁bay , ▁including ▁the ▁K ild are ▁River , ▁Mill ▁River , ▁Fox ely ▁River ▁and ▁Tr out ▁River . ▁ ▁The ▁lands ▁at ▁the ▁south ▁end ▁of ▁the ▁bay ▁east ▁of ▁the ▁Fox ely ▁River ▁are ▁almost ▁entirely ▁composed ▁of ▁pe at ▁and ▁are ▁known