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The oversight committees, particularly the HPSCI, became increasingly alarmed over the role US intelligence agencies were playing in the implementation of the administration's Central American policy. The issue of greatest concern was the CIA's support to the Contra rebels in Nicaragua.
1 Using a switch is calledmicrosegmentation. 2  This allows computers to have dedicated bandwidth on apoint-to-point connection to the network and to therefore run in full duplex withoutcollisions.Role of Switches in NetworksSwitches may operate at one or more layers of the OSI model, including data link andnetwork.