Which of the following is a benefit of using Kerberos?

Kerberos is a network authentication protocol designed to provide secure authentication for users and services. One of its significant benefits is that it is both inexpensive and widely supported. This is primarily due to its long-standing history and integration into various systems, including Windows and Unix-based platforms. Many organizations have adopted Kerberos as part of their authentication strategy because it is built on well-established security principles and is compatible with numerous applications and services.

The widespread support for Kerberos means organizations can implement it without needing to invest heavily in new technology or training, making it a cost-effective solution for identity and access management. Additionally, its ability to work in different environments and across various platforms enhances its utility and appeal for many enterprises.

The other options, while they may have some relevance in different contexts, do not encapsulate the core advantages that Kerberos holds within its authentication framework. Higher availability and scalability are often more about the design of the overall system rather than solely the protocol itself. Similarly, simplicity in installation and configuration can vary based on the existing infrastructure and expertise, as can real-time performance monitoring, which is not a primary focus of Kerberos. Thus, the benefit of being inexpensive and widely supported stands out as a defining characteristic of Kerberos in identity and access management.