IT & TechnologyQuestions: 1. How does a layer-2 switch differ from a router? 2. How does a layer- switch differ from a VLAN? 3. How does a router differ from a VLAN? 4. Under what circumstances would you use a switched backbone? 5. Under what circumstances would you use a routed backbone? 6. Under what circumstances would you use a VLAN backbone? 7. Explain how routed backbones work? 8. Explain how switched backbones work. 9. What are the key advantages and disadvantages of routed and switched backbones? 10. Compare and contrast rack-based and chassis-based switched backbones. 11. What is a module and why are modules important? 12. Explain how single-switch VLANs work. 13. Explain how multi switch VLANS work. 14. What is IEEE 802.1q? 15. What are the advantages and disadvantages of VLANs? 16. How can you improve the performance of a BN? 17. Why are broadcast message important? 18. What are the preferred architectures use in each part of the backbone? 19. Some experts are predicting that Ethernet will move into the WAN. What do you think?