Inside the Black Museum. 1  1/4 Inside the Black Museum Items in the Metropolitan Policeâs âBlack Museumâ include crime memorabilia. Rex. 2  2/4 Inside the Black Museum Objects that appear to be implements of torture at the 'Black Museum'. Rex Features. 3  3/4 Inside the Black Museum Noons used to hang criminals at the Black Museum. Rex Features.
ACI: Agile, Open, and Secure. Cisco ACI is a comprehensive SDN architecture. This policy-based automation solution supports a business-relevant application policy language, greater scalability through a distributed enforcement system, and greater network visibility.
Two Types of Switches will be used in ACI , Leaf and Spine . You can imagine that Spine switch is like Distribution switch and Leaf switch is like Access switch . You cannot use any other Vendor switches or other Cisco switches in ACI . Some models of Nexus 9K support NX-OS and ACI Fabric OS . Some models of Nexus 9K support to work as Leaf, Spine, both or not supporting ACI at all.