Cisco Updated 350-601 Exam Questions and Answers by raina

 In Cisco ACI, TCAM resources can be optimized by configuring a single contract that is provided and consumed by all EPGs within a VRF. This approach ensures that all EPGs consume the same services, thus reducing the number of individual contracts and associated TCAM entries. By having a common contract, the ACI fabric can efficiently manage access control policies and service insertion without the need for multiple, redundant entries in the TCAM, which can lead to resource exhaustion. References: The information is based on the best practices for TCAM management in Cisco ACI fabrics, as detailed in the Cisco community discussions and Cisco’s official documentation on TCAM resource issues and workarounds12. Additionally, the concept of using a single contract for multiple EPGs is supported by the Cisco ACI Endpoint Security Group (ESG) Design Guide, which outlines the steps for implementing a single ESG for open communication between subnets (EPG selectors)

The In-Service Software Upgrade (ISSU) feature on Cisco Nexus 9000 Series Switches supports nondisruptive upgrades via nonstop forwarding. This allows the switch to continue forwarding traffic while the system software is being upgraded, thereby minimizing downtime and maintaining continuous network service

The History Count setting in a user management system is used to prevent the reuse of old passwords. It specifies the number of unique new passwords that must be used before an old password can be reused. This helps enhance security by ensuring that passwords are not easily guessable and that users are not cycling through a small set of favorite passwords.