Expected 300-620 Exam Topics, as suggested by Cisco :

• Module 1: ACI Fabric Infrastructure: In this section of the exam, the focus is given to describing ACI topology and hardware, the ACI Object Model, using faults, event records, and audit logs. It also covers how to explain the ACI fabric discovery and deploy ACI policies such as Access and Fabric.
• Module 2: ACI Packet Forwarding: In this section of the exam, the candidates are tested for explaining endpoint learning and deploying bridge domain configuration knob.
• Module 3: External Network Connectivity: In this exam section, the focus is on how to deploy Layer 2 out (STP/MCP basics and EPG port bindings) and Layer 3 out (excludes transit routing and VRF route leaking).
• Module 4: Integrations: The topic covers how to implement VMware vCenter DVS integration, explain resolution immediacy in VMM, and deploy a service graph.
• Module 5: ACI Management: In this section, the focus is on how to implement out-of-band and in-band and use syslog and SNMP services. Moreover, the exam section covers how to deploy configuration backup (snapshot/config import-export) and AAA and RBAC.
• Module 6: ACI Anywhere: The exam phase focuses on how to describe Multi-Pod and Multi-Site.