An organization can lease a private that is not shared with other users, or a that can be physically configured over shared lines in the carrier's cloud.
pvc (permanent virtual circuit), svc (switched virtual circuit)
svc (switched virtual circuit), dedicated line
dedicated line, virtual circuit
svc (switched virtual circuit), pvc (permanent virtual circuit)

6. write a user-defined matlab function for the following math function: r() = 4cos(4sin ) the input to the function is  (in radians) and the output is r. write the function such that  can be a vector. a) use the function to calculate r(/6) and r(5/6). b) use the function to plot (polar plot) r() for 0 ≤  ≤ 2. hint: use “ polar” and/or for “polar plot in matlab." include the title “'r(\theta)=4cos(4sin(\theta))”