📝 Packet strategies in Communication Structure

Q1. What is the nominal data transfer rate of a T1 line?

💡 Difficulty: easy | ✅ Correct: A

Q2. Why are WAN connections typically slower than LAN connections?

💡 Difficulty: medium | ✅ Correct: C

Q3. When transmitting over a T3 link (45 Mbps) or an OC‑12 link (622 Mbps), which packet payload size gives the highest link utilization if each packet incurs an 80‑byte header and the maximum MTU is 1500 bytes?

💡 Difficulty: hard | ✅ Correct: A