What interview questions will you encounter when interviewing PE engineers (electronic products, structures)?

This is someone's interview topic, after-sales position: senior network engineer. The interviewer is CCIE III, and the interview process lasted more than 2 hours, which was very impressive. Now that the quotation has been basically confirmed, the victim is still considering the salary and work pressure before deciding whether to accept the quotation. The victim also posted an interview topic on his blog, so I dared to post it.

1. At present, the switching bandwidth of 6509 and 7609, SUP720 is 720 G. Can it be said that 7609/6509 can replace part of GSR?

2. Which route is included in the routing table of "Islamic State" 1? When there are multiple level- 1-2 exits, where does it learn other routes and how to choose routes?

3.MPLS L3 VPN, what should I do if I want two different VPNs to visit each other in one direction?

4. Can cross-domain MPLS L3 VPN talk about ideas?

5. Users of 5.MPLS L3 VPN need to access the Internet. How to achieve it? How many ways can it be achieved? What are the characteristics?

6.MPLS L3 VPN, what should I do if I want two different VPNs to visit each other in one direction?

7. What are the characteristics of 7.L3 VPN and L2 VPN? Which model do you think is more promising to operate?

8. Let's talk about the differences between Islamic State and OSPF in various aspects.

9. What are the reasons why backbone networks or metropolitan area networks choose "Islamic State" and OSPF?

10. What are the common routing principles of BGP? How to use backbone network and metropolitan area network together?

1 1. If BGP is added using the maximum path, which BGP routing attribute will be used before this option?

12. Why do the main pop and MAN exits have to jump off themselves?

13. Between two AS, there are four routers connected in zigzag. One of them learned a network from EBGP and the same network from IBGP. Which one should I choose? Which attribute affects it? If my one from IBGP plus MED is smaller than that from EBGP, which one should I choose? Why?

14. What's the difference between local-pre and weight?

15. Can BGP achieve load balancing? If so, what are the methods?

16.MED Can I compare among multiple AS? If yes, do you need preconditions? If yes, what are the prerequisites?

Can 17。 Is MED be combined with IGP meASurement in as? If so, how to do it?

18. There are still ten minutes to cut. The conversion did not succeed. The bureau urges you to cut back, but you think these problems can be solved as long as you work hard for five minutes. What is your choice?

19. How to deploy the QoS of the backbone network? What kind of backbone network do you think is congested under what circumstances?

20. Which do you think is better for engineering and maintenance, l3 network or l2 network?

2 1.L3 network and L2 network handle loops. What is their mechanism?

22. Generally speaking, how many spanning trees are there in L2 switches?

What is the spanning tree mode of 23.3550? What is the number of spanning trees?

According to your experience, when the flow of GE port reaches a certain level, you can think that there is congestion. 2.5G POS port, when the traffic reaches a certain level, it can be considered as congestion.

In addition, I asked how to deal with some events in the project implementation, whether there are any failed experiences and experiences, what is the most difficult event in the work and how to deal with it. Of course, there are also some conversations that flirt with each other in a peaceful atmosphere.