Which network device is responsible for connecting end nodes (computers) to the network? Switch Router VPN Firewall Proxy In peer to peer systems which indexing methodology reduces the limits to horizontal peer scaling? Distributed Hash Tables Centralized Random Walk Query Flood Which of the following is general not supported with in the message queue form of indirect communication Blocking Receive Non-Blocking Receive Notify Non-Blocking Send Which publish/subscribe event routing methodology employs group membership in its routing topology Flood Filtering Informed Gossip Rendezvou