Cisco Certified Network Associate (CCNA) Practice Exam

What does the acronym CIR stand for in relation to Frame Relay?

1. Committed Information Rate

2. Controlled Information Rate

3. Constant Information Rate

4. Comprehensive Information Rate

The correct answer is: Committed Information Rate

The acronym CIR stands for Committed Information Rate in the context of Frame Relay. This term refers to the guaranteed average data rate that a Frame Relay network agrees to provide to a user. Essentially, it is the maximum speed at which data can be transmitted over the network during typical operational conditions. The CIR is important as it allows network service providers to manage bandwidth more effectively and gives customers an assurance of the minimum level of service they can expect. In Frame Relay configurations, CIR is integral to performance expectations, where it helps define the pricing model for different service levels. Understanding the concept of CIR is crucial for network engineers and designers, as it aids in capacity planning and ensures that the network can efficiently handle user needs while adhering to service level agreements (SLAs). Other terms listed in the options do not align with the standardized definition or common use of the acronym in networking environments. Hence, the identification of CIR as Committed Information Rate is fundamental to addressing bandwidth allocation in Frame Relay technology.