ITM 102 Lecture Notes - Lecture 8: Local Area Network, Data Link Layer, Collision Domain

• School: Ryerson University
• Department: Information Technology Management
• Course: ITM 102
• Professor: Bharat Shah

Document Summary

If there"s a router i(cid:374) the (cid:373)iddle, there are (cid:1006) la(cid:374)s: routers, switch (many ports), hub, bridge (only 2 ports) (same lan, two lans can be configured by looking at ip (different ips= two lans) (no difference in. Ip address identifies different devices: layer 4: transport layer, tcp, udp, data can arrive in different order. Layer 5: session layer: establishes a session between a network, whe(cid:374) o(cid:374) o(cid:374)li(cid:374)e (cid:271)a(cid:374)ki(cid:374)g, if (cid:455)ou"re afk for (cid:1009) (cid:373)i(cid:374)s it asks for pass(cid:449)ord, either you discount or it automatically discounts. Layer 6: presentation layer: format, sending email, data can be converted to another format, encryption (security, compression (handbraking data online) Layers 2-4 are done within operating system (windows, ios: tcip protocol. Chapter 3: dns (domain name system) servers maintain the database, every organization has their own dns server, dns database consist of name (pc) and ip (cid:862)www. (cid:863) is a (cid:374)a(cid:373)e of a (cid:449)e(cid:271) ser(cid:448)er.