Transport vs.network layer network layer:logical communication household analogy: between hosts 1 2 kids in Ann's house sending letters to 1 2 kids in Bill's ■transport layer: house: logical hosts houses communication processes kids between processes app messages letters in envelopes ·relies on,enhances,. network layer transport protocol Ann and Bill who demux to in- services house siblings network-layer protocol postal service Transport Layer3-5Transport Layer3-5 Transport vs. network layer ▪ network layer: logical communication between hosts ▪ transport layer: logical communication between processes • relies on, enhances, network layer services 12 kids in Ann’s house sending letters to 12 kids in Bill’ s house: ▪ hosts = houses ▪ processes = kids ▪ app messages = letters in envelopes ▪ transport protocol = Ann and Bill who demux to in￾house siblings ▪ network-layer protocol = postal service household analogy: