In this chapter, the basic elements of the OSI and TCP/IP protocol stacks have been developed. The abstract elements of the OSI architecture are realized in the four-layer TCP/IP stack supported by Solaris. In the following chapters, each of these layers will be examined in more detail.
1. | Which of the following is a valid network topology?
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2. | Which of the following is a valid network topology?
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3. | What is OSI?
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4. | What is the role of the Physical Layer?
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5. | What is the role of the Data Link Layer?
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6. | What is the role of the Network Layer?
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7. | What is the role of the Transport Layer?
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8. | What is the role of the Session Layer?
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9. | What is the role of the Presentation Layer?
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10. | What is the role of the Application Layer?
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11. | What link speeds are not supported by Solaris?
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12. | What command is used to modify /dev/tcp settings?
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13. | What command is used to disable IP forwarding?
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14. | What command is used to verify the status of a network interface?
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15. | What command is used to check the table of IP address to MAC address mappings?
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Answers
1. | A. Star is a valid network topology. |
2. | D. Ring is a valid network topology. |
3. | B. OSI is a framework for defining the scope of different layers of networking technology. |
4. | A. The Physical Layer defines how data is exchanged at its very basic level. |
5. | B. The Data Link Layer defines the apparatus for transferring data, including error checking and synchronization. |
6. | C. The Network Layer defines specifies operational issues, such as how networks can exchange data. |
7. | D. The Transport Layer specifies how individual computers are to interpret data received from the network. |
8. | B. The Session Layer determines how data from different sources can be separated. |
9. | C. The Presentation Layer specifies how different types of data are formatted. |
10. | D. The Application Layer describes how high-level applications can communicate with each other. |
11. | D. 10000Base-T - 10Gbps is not currently supported. |
12. | D. ndd is used to modify /dev/tcp settings. |
13. | B. ndd -set /dev/ip ip_forwarding 0 disables IP forwarding. |
14. | C. ifconfig is used to verify the status of a network interface. |
15. | A. arp is used to check the table of IP address to MAC address mappings. |