IGMP snooping is used to manage IP multicast traffic on layer-2 networks. A common layer-3 capability is an awareness of IP multicast through IGMP snooping. Switches featuring IGMP snooping derive useful information by observing these IGMP transactions. One way to reduce the unnecessary snooping is to use a snoop filter. Some IGMP snooping implementations include full querier capability. He suspects Chad to have been a spy snooping on him. President Moon Jae-in further reinforced media censorship by snooping on SNI traffic. The first bus-connected multiprocessor with snooping caches was the Synapse N+1 in 1984. This is the most commonly used snooping protocol. Someone engaged in data snooping might try to find additional similarities between Mary and John. Anna later finds the picture while snooping on Kylie's laptop. They have staged the encounters and the snooping for their own private enjoyment. The notification of data change can be done by bus snooping. Worried that Parker might need help, Leslie begins snooping around the garden. She finds Sean Kennedy's wallet while snooping in Warren's flat.