Which of the following is NOT a model in the 6500 series?

The model designated as 6507 is not part of the Cisco 6500 series lineup. The Cisco 6500 series has a variety of specific models designed to meet different networking requirements, including the 6503, 6509, and the 6513, among others. Each model offers various capabilities in terms of scalability, performance, and support for different types of modules. For instance, the 6503 is known for its compact size and suitability for smaller enterprise environments, while the 6509 and 6513 provide more extensive capabilities for larger networks and services.

The reason 6507 does not exist within the 6500 model variants underscores the importance of understanding the actual model numbers and their respective configurations in networking hardware. Familiarity with the models can aid in making informed decisions about equipment for various networking needs.