8/14/2019 These questions were sent in from IBM

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These questions were sent in from IBM. They discuss various telecom and networking

topics.

1. OSPF1. Describe OSPF in your own words.

2. OSPF areas, the purpose of having each of them3. Types of OSPF LSA, the purpose of each LSA type

4. What exact LSA type you can see in different areas5. How OSPF establishes neighboor relation, what the stages are

6. If OSPF router is stucked in each stage what the problem is and how to

troubleshoot it7. OSPF hierarchy in the single or multi areas. Cool OSPF behavior in

broadcast and nonbroadcast

8. Draw the diagram of typical OSPF network and explain generally how itworks, DR, BDR, election, ASBR, ABR, route redistribution and

summarization

2. STP1. How it works and the purpose2. Diff types (SSTP, MSTP, RSTP) Cisco - PVST/PVST+

3. Root election

4. Diff. port stages and timing for convergence5. Draw the typical diagram and explain how diff types of STP work

6. What ports are blocking or forwarding

7. How it works if there are topology changes3. ACLs

1. What are they

2. Diff types

3. Write an example if you want to allow and to deny4. Well-known port numbers (DNS - 53 and etc)

4. QOS

1. What is that2. What is the diff b/w L2 and L3 QoS

3. How it works

5. Network1. Draw the typical network diagram you have to deal with

2. Explain how it works

3. What part of it you are responsible4. firewall, what is that, how it works, how it is diff from ACLs

5. What problems with the network you had had and how you solved it.

6. What are the ways to troubleshoot the network, techniques, commands

7. Network security, ways to achieve it6. Switching

1. VLANs

2. STP3. How a L2 switch works with broadcast, unicast, multicast,

known/unknown traffic

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4. VRRP, GLBP

5. port monitoring and mirroring

6. L3 switch, how it works7. PIM sparse and dense modes