Question

1. What is the most popular L. AN technology?

2. Describe how an Ethernet frame is constructed.

3. What are the CSMA and CD technologies?

4. What are the advantages ofa VLAN?

5. Which WAN technology can reach transmission rates of up to 10 Gbps?

6. Which WAN technology is using circuit swtchiing technology?

7. Explain why a packet switch uses two sets of ports.

8. What are CSU and DSU?

9. What is the Internet?

10. How can hosts in private LANS communicate through the Internet?

11. What is a POP?

12. What are the two key technologies that make communication over the Internet possible?

13. On the Internet, how can an ISP reach another ISP?

14. What is the range of data transmission rates for the T-series standards?

15. Name three commonly used wireless transmission media.

16. Name three types of commonly used wireless technologies.

17. Why do we need modulation?

18. What is the difference between a hub and a switch?

19. What are the advantages of a Layer 3 switch?

20. What are the reasons for an edge aggregation router to use MPLS?

Answer 1

1) ETHERNET

2) Ethernet, IEEE 802.3 defines the frame formats or frame structures that are developed within the MAC layer of the protocol stack.

Essentially the same frame structure is used for the different variants of Ethernet, although there are some changes to the frame structure to extend the performance of the system should this be needed. With the high speeds and variety of media used, this basic format sometimes needs to be adapted to meet the individual requirements of the transmission system, but this is still specified within the amendment / update for that given Ethernet variant.

3) hort for Carrier Sense Multiple Access / Collision Detection, a set of rules determining how network devices respond when two devices attempt to use a data channel simultaneously (called a collision). Standard Ethernet networks use CSMA/CD to physically monitor the traffic on the line at participating stations.

4) Advantage

1.in network design it plays important role and gives easy way to understand tha network 2.Broadcast control - you can create no. Of vlan department wise like sales,marketing,production,BOD so it is easy to operate.
3.Flexibility - you can add any no. Of user in one vlan there is total 4095 vlan.
4. Segmentation

5) Packet switching.

8) CSU - Channel Service Unit
DSU - Data Service Unit

9) The Internet is generally defined as a global network connecting millions of computers. More than 190 countries are linked into exchanges of data, news and opinions.

11) Post Office Protocol