Questions and Answers
What is the primary goal of network design?
Meeting the organization's communication needs
What does a data network enable users to do?
Share computer resources located in different places
Which of the following is NOT a consideration when developing a network plan?
Performance
What are the main responsibilities of network engineers?
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Why do organizations need to develop a comprehensive plan for network design?
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What is the purpose of a data network?
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What is a disadvantage of storing information in unstructured storage, such as ASCII files?
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Which advantage is associated with storing data in structured storage like DBMS?
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How does configuration management benefit network devices?
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What is the primary focus of security management in relation to network devices?
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Which method of information storage requires users to learn a query language like SQL for data access?
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In unstructured storage, why is it inefficient to store and access data?
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What does a Network Management System (NMS) comprise?
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Which of the following is an example of a freeware implementation of a Network Management System (NMS)?
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What functionality should be included in the platform of a Network Management System (NMS)?
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Which architecture can be used by an NMS platform to provide functionality?
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What will be covered in the next lecture after Network Management Architecture?
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Which commercial implementation is NOT an example of a Network Management System (NMS)?
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Which of the following is NOT a performance term mentioned in the text?
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What is the main purpose of accounting management according to the text?
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Which of the following is NOT mentioned as a benefit of performance management in the text?
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Which of the following groups can benefit from examining network trends?
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Which of the following tasks is NOT mentioned as part of accounting management in the text?
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What is the main purpose of establishing metrics according to the text?
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What is the primary purpose of fault management in a data network?
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What are the main steps involved in the fault management process?
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What are the two methods mentioned for gathering information for fault management?
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What is a potential drawback of solely relying on critical events (interrupt-driven) for fault management?
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What is a benefit of using polling for fault management?
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How does fault management help maintain the illusion of complete and continuous connectivity between users and the network?
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Study Notes
Network Design and Management
- A data network is a collection of devices and circuits for transferring data from one computer to another, enabling users to share resources at different locations.
Goals of Network Design
- Primary goal: meet the organization's communication needs.
- Considerations: productivity, budget, suitability, reliability, scalability, and durability.
Network Engineer/Administrator
- Responsible for installing, maintaining, troubleshooting, optimizing, and expanding the network.
- Use simulation to determine how to maximize network performance.
Performance Management
- Reduces probability of network congestion and inaccessibility, providing a consistent level of service to users.
- Benefits: examines network trends, assists in allocating network resources, and reduces network congestion.
Performance Terms
- Availability
- Bandwidth/Throughput
- Propagation
- Congestion
- Latency
- Threshold
- Utilization
Accounting Management
- Process of gathering network statistics to help network engineers make decisions about resource allocation.
- Involves: gathering data, setting usage quotas, and billing users.
- Benefits: measures and reports accounting information, and allows for effective allocation of network resources.
Data Collection, Modification, and Storing
- Methods of storage: unstructured (e.g., ASCII files) and structured (e.g., DBMS).
- Unstructured storage: easily read, accessed, and administered, but inefficient and slow to search.
- Structured storage: efficient, enables data relationships, but requires query language and administrative overhead.
Configuration Management
- Benefits: automatically gathers and updates data on network devices, allows remote configuration, and provides central storage for configuration data.
Security Management
- Protects sensitive information on devices by controlling access points.
Network Management Systems
- Comprises: underlying architecture, software package, and set of applications.
- Examples: HP Openview, SunConnect SunNet Manager, IBM Netview, Net-SNMP, and OpenNMS.
- Platform functionality: user interface, network map, DBMS/MIB, query language, customizable menu, and event log.
- Architectures: centralized, hierarchical, and distributed.
Fault Management
- Process of locating problems or faults on the data network.
- Involves: detecting symptoms, isolating causes, and correcting problems.
- Benefits: enhances network reliability, provides rapid fault detection, isolation, and recovery, and maintains the illusion of complete connectivity.
