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The following Frequently Asked Questions, answered by the authors of this book, are designed to both measure your understanding of the Exam Objectives presented in this chapter, and to assist you with real-life implementation of these concepts. You will also gain access to thousands of other FAQs at ITFAQnet.com.
1. | How many nodes can be in a server cluster? |
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2. | What server cluster model is most frequently used? |
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3. | How many applications can a server cluster run? |
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4. | Can a server cluster be configured with a single network interface adapter? |
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5. | Can any application be run on a server cluster? |
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6. | Can server clusters be created from any equipment? |
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7. | Can any application be used with Network Load Balancing? |
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8. | Can server clustering and NLB be used together? |
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9. | Can NLB hosts be created from any equipment? |
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10. | How many hosts can be in an NLB cluster? |
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Answers
1. | One to eight nodes can be in a server cluster, depending on the cluster’s design and applications. |
2. | The single quorum device model is the most used cluster model. |
3. | There is no inherent limit to the number of applications a server cluster can run. Only the resources of the nodes limit the number of applications that can be run on a node. |
4. | No, at least one public interface and one private interface must be present in each cluster node. |
5. | No, only applications that can operate as a system service, use the TCP/IP protocol, can be configured to store their data where specified, and whose client applications attempt to reconnect if a failure is encountered can be configured to operate on a server cluster. |
6. | No, server clusters require very specific and robust hardware configurations. |
7. | No, only network-type, TCP-based applications can be used with Network Load Balancing (NLB). |
8. | Yes, but not on the same hardware. They can be used in conjunction to form high-availability solutions. |
9. | Yes, an NLB host is not required to be expensive or high performance. |
10. | Up to 32 hosts can be in an NLB cluster. |
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