Transport vs.network layer network layer:logical Household analogy: communication 12 kids sending letters to between hosts 12 kids transport layer:logical ▣processes=kids communication 口 app messages letters between processes in envelopes o relies on,enhances, ▣hosts=houses network layer services transport protocol Ann and Bill network-layer protocol postal service Transport Layer 3-5 Transport Layer 3-5 Transport vs. network layer network layer: logical communication between hosts transport layer: logical communication between processes relies on, enhances, network layer services Household analogy: 12 kids sending letters to 12 kids processes = kids app messages = letters in envelopes hosts = houses transport protocol = Ann and Bill network-layer protocol = postal service