Chapter Review Questions
| 1. | Name the four fields that are part of a label. |
| 2. | How many labels can reside in a label stack? |
| 3. | In which layer does MPLS fit in the OSI reference model? |
| 4. | Which table does an LSR use to forward labeled packets? |
| 5. | What type of interfaces in Cisco IOS uses the Downstream-on-Demand label distribution mode and the per-interface label space? |
| 6. | Why does the MPLS label have a Time To Live (TTL) field? |
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