📝 Data Link Layer basics

Q1. In the scenario described, how many separate logical connections exist between the data‑link layers along the path from Alice’s host to the destination host?

💡 Difficulty: easy | ✅ Correct: C

Q2. If a packet encounters a failure at router R2’s data‑link layer, what is the immediate effect on end‑to‑end communication?

💡 Difficulty: medium | ✅ Correct: B

Q3. A store‑and‑forward switch forwards a frame of 1500 bytes over a link of 10 Mbps. Using the formula \( \text{latency} = \frac{\text{frame size}}{\text{bandwidth}} \), what is the minimum per‑hop latency?

💡 Difficulty: hard | ✅ Correct: B