In data transmission, It is the amount of data that is moved successfully from one device to another in a given period of time The average rate of successful data transmission over a communication channel is also referred as Network Throughput,
Leafeon is the evolved form of Eevee. Eevee evolves into Leafeon at any given level, when leveled up in Eterna Forest, Pinwheel Forest, Route 20 or Petalburg Woods near the moss covered rock.
Keep on giving it Haircuts and it'll evolve eventually. Eevee can evolve into an Umbreon at and between the levels 2-99. It needs at least 220 Happiness points but from what you said earlier (trusts you), it means that your very close to reaching that level. Makes sure that you level it up so that it evolves. If you don't level it up, then it won't evolve.