*** For the t2.xlarge, single threaded applications can use 90% of 1 core, or if needed, multithreaded applications can use 45% each of 2 cores or 22.5% of all 4 cores. **** For the t2.large, single threaded applications can use all of 1 core, or if needed, multithreaded applications can use 67.5% each of 2 cores or 16.875% of all 8 cores. Q.