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Carrier-Grade, High-Availability Computing Platforms for Voice and Data Networks

Table of Contents:
Definition and Overview
1. Ensuring Continuous Availability of Communication Services
2. Communication Service Requirements
3. Conclusion
Self-Test
Glossary
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Self-Test
1. When addressing continuous service availability, software fault tolerance presents a bigger challenge than hardware fault tolerance.
a. true
b. false
2. Hardware fault-tolerant systems offer complete protection against software faults.
a. true
b. false
3. It is possible to prevent software failures completely.
a. true
b. false
4. Software replication techniques are incompatible with hardware fault-tolerant solutions.
a. true
b. false
5. OpenCall SS7 software can be deployed on which of the following?
a. a monoprocessor stand-alone computer system
b. a multiprocessor stand-alone computer system
c. a cluster environment
d. all of the above
e. a and b only
6. Service providers can reduce their system ownership costs by deploying multiple services on the same platform.
a. true
b. false
7. Continuous service availability requires fault resilience at the network interface.
a. true
b. false
8. With VM technology, a software bug in one instance of the service will likely crash the entire execution environment.
a. true
b. false
9. In order to protect against site failures, it is necessary to distribute service logic and service data across multiple sites.
a. true
b. false
10. In the SS7 network, IN network elements can only operate in mated-pair mode.
a. true
b. false
Glossary >>

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