📝 Network Switching and TCP/IP Layers

Q1. When end system A requests a connection to end system M, which step must occur before any user data can be transmitted?

💡 Difficulty: easy | ✅ Correct: B

Q2. If a circuit is established but later a switch in the path experiences a hardware fault, what is the most immediate impact on the ongoing communication?

💡 Difficulty: medium | ✅ Correct: D

Q3. Suppose each link in the network provides n = 3 channels. If a connection uses one channel per link, what fraction of the total link capacity remains unused for that connection?

💡 Difficulty: hard | ✅ Correct: A