Chapter 12
| 1: | What do LAC and LNS stand for? |
| A1: | Answer: L2TP Access Concentrator and L2TP Network Server. |
| 2: | What is the purpose of the ZLB ACK message? |
| A2: | Answer: It is sent to indicate that there are no more messages in the queue. |
| 3: | What is the purpose of tunnel authentication in the router configuration? |
| A3: | Answer: It is used to authenticate the control session between the LAC and the LNS. |
| 4: | Which port number does L2TP use? |
| A4: | Answer: UDP 1701. |
| 5: | How can L2TP reduce dial setup costs? |
| A5: | Answer: It allows a PPP connection to be established to the LNS over IP connectivity provided by a local ISP. |
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