True or False

$1.$ Compression refers to the ability of a number of devices to share a transmission facility$\mathrm{.}2.$ In general, the network performance is proportional to the cost$\mathrm{.}3.$ Local Area Networks are usually owned by the organization that is using the network to interconnect equipment$\mathrm{.}4.$ Unicast addressing is where the destination address in the MAC frame designates a unique destination.