IST 233- Midterm Exam Guide - Comprehensive Notes for the exam ( 36 pages long!)

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4/24/17 ist 233 m001 molta: connecting all corporate sites to a single isp. If all sites connect to a single isp, the isp can provide qos guarantees and other wan services like mpls. This capacity problem is mitigated by employing channel reuse: recall that channel reuse is also used on wi-fi. In the future, voice will be a data service. If two devices transmit at the same time, a collision occurs, both devices wait a random time and start contention again: csma/cd+ack, sender listens for traffic. If medium is clear, get into the appropriate queue, depending on packet type, then wait a random amount of time. Wait for ack before continuing: csma/ca+acl challenges, higher overhead, less efficient, ethernet throughput: data rate is about . 95. Client application interface: 2. business logic (functionality, 3. Clients use smtp to send outgoing mail to mail server: 2.