Advanced Novell Network Management: NetWare 6

Review for Third Quiz

 

1. What does MTBF stand for? What does it mean, in terms of hardware expectations?
   
   
2. What does MTTR stand for? Why is it important in determining availability of systems?
   
   
3. Define availability in an equation, using MTBF and MTTR.
   
   
4. What is the difference between 24x7x365 and 24x7x365 at 100%?
   
   
5. What is the meaning of five 9s? Four 9s? Describe the effects over time of attaining different levels of availability.
   
   
6. What are some features of NCS that make it a good choice for reliable high-availability service?
   
   
7. Define these NCS related terms:
   • NCS
   • Cluster
   • Node
   • Migration
   • Failover
   • Failback
   • Heartbeat
   
   
8. What are the required components of an NCS cluster?
   
   
9. What license requirement exists when implementing NCS?
   
   
10. What are two ways you might install NCS? What other NCS task can be performed with the utility you should have just named?
    
    
11. What are the five types of eDirectory object that are used with NCS?
    
    
12. What is an NCS quorum? How is the concept affected by the Timeout value on the Quorum tab?
    
    
13. On the protocol tab, what is the relationship between Heartbeat and Tolerance?
    
    
14. In Remote Manager, a cluster server may be shown any of several colors. What are they, and what do they mean?
    
    
15. When configuring a cluster to provide file access to users, what server advertising protocol should be chosen to service Novell clients? Microsoft clients? Macintosh clients?
    
    
16. What cluster setting is described in chapter 9 that will improve data integrity if turned on? What feature of the system may suffer if this is turned on?
    
    
17. A cluster contains several servers. Why does it need to be associated with a virtual server object in eDirectory?
    
    
18. Why might an administrator choose to migrate a cluster resource?
    
    
19. What is the simplest troubleshooting procedure to try (other than 'nothing') for a cluster resource problem?
    
    
20. What do the following cluster resource states indicate?
    • Comatose
    • Alert
    • Unloading
    • Running
    • Loading
    • Unassigned
    • NDS_Sync
    • Offline
    • Quorum wait
    
    
21. What is a cluster-aware application? How is this different from a cluster-naive application?
    
    
22. What is the difference between the Auto and Manual modes of the Start behavior for a cluster resource?
    
    
23. What is the difference between the Auto and Manual modes of the Failover behavior for a cluster resource?
    
    
24. What is a load script, with regard to cluster resources? What is the default timeout for a load script? What happens if the timeout value is reached?
    
    
25. Where does the text suggest you get more information on configuring clusters?
    
    
26. Some basic advice is offered in the text about preparing for disasters. What hardware advice is offered? What backup advice is offered? What advice is offered about RAID and clusters?
    
    
27. Assume you have just made a backup of your clustered data. What are two things the book recommends that you do, neither of which you are likely to do?