' s ▁best ▁high ▁schools ▁and ▁a ▁model ▁to ▁other ▁schools . ▁ ▁References ▁▁ ▁Category : Sch ool ▁districts ▁in ▁South ▁Carolina ▁York ▁County <0x0A> </s> ▁In ▁computer ▁network ▁research , ▁network ▁simulation ▁is ▁a ▁technique ▁where by ▁a ▁software ▁program ▁models ▁the ▁behavior ▁of ▁a ▁network ▁by ▁calculating ▁the ▁interaction ▁between ▁the ▁different ▁network ▁entities ▁( rou ters , ▁switch es , ▁nodes , ▁access ▁points , ▁links ▁etc .). ▁Most ▁sim ul ators ▁use ▁discrete ▁event ▁simulation ▁- ▁the ▁model ing ▁of ▁systems ▁in ▁which ▁state ▁variables ▁change ▁at ▁discrete ▁points ▁in ▁time . ▁ ▁The ▁behavior ▁of ▁the ▁network ▁and ▁the ▁various ▁applications ▁and ▁services ▁it ▁supports ▁can ▁then ▁be ▁observed ▁in ▁a ▁test ▁lab ; ▁various ▁attributes ▁of ▁the ▁environment ▁can ▁also ▁be ▁modified ▁in ▁a ▁controlled ▁manner ▁to ▁assess ▁how ▁the ▁network ▁/ ▁protocol s ▁would ▁behave ▁under ▁different ▁conditions . ▁ ▁Network ▁sim ulator ▁A ▁network ▁sim ulator ▁is ▁software ▁that ▁predict s ▁the ▁behavior ▁of ▁a ▁computer ▁network . ▁Since ▁communication ▁networks ▁have ▁become ▁too ▁complex ▁for ▁traditional ▁analyt ical ▁methods ▁to ▁provide ▁an ▁accurate ▁understanding ▁of ▁system ▁behavior , ▁network ▁sim ul ators ▁are ▁used . ▁In ▁sim ul ators , ▁the ▁computer ▁network ▁is ▁ ▁mode led ▁with ▁devices , links , ▁applications ▁etc . ▁and ▁the ▁network ▁performance ▁is ▁reported . ▁Sim ul ators ▁come ▁with ▁support ▁for ▁the ▁most ▁popular ▁techn ologies ▁and ▁networks ▁in ▁use ▁today ▁such ▁as ▁ 5 G , ▁Internet ▁of ▁Things ▁( I o T ),