Summary
In this chapter, we have examined the installation and configuration of the Network Information Service. Using NIS is necessary in large network environments where changes must be made. Although NIS is a difficult and complex package to master, it is very flexible and can reduce administrator burden greatly in many situations.
Questions
1. | What does the nisserver command do?
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2. | What does the nispopulate command do?
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3. | What does the nisgrpadm command do?
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4. | What does the nisclient command do?
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5. | What command would you use to create a NIS+ configuration checkpoint?
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6. | What does the Auto_Home table do?
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7. | What does the Netgroups table do?
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8. | Which are valid object permissions?
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9. | What operands are used to specify access rights for specific classes of users?
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10. | What does the niscat command do?
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Answers
1. | A. The nisserver command sets up a root NIS+ domain. |
2. | C. The nispopulate command extracts data from existing /etc files and inserts it into NIS+ tables. |
3. | A. The nisgrpadm command adds users to a NIS+ group. |
4. | D. The nisclient command assigns the role of replica server. |
5. | B. The nisping command is used to create a NIS+ configuration checkpoint. |
6. | C. The Auto-Home table enables all users within a domain to access a single home directory. |
7. | D. The Netgroups table contains authorization lists that can be used to govern access to resources. |
8. | A. Valid object permissions are c, d, m, and r. |
9. | D. The operands a, g, n, o, and w are used to specify access rights for specific classes of users. |
10. | A. The niscat command is used to retrieve the contents of objects within the domain. |