If a computer network $10$ servers with star shape$($circular and one center$)$

and one main server is desired what is the complexity of linear network? In the above question if they are lined up in double linked list what is the average complexity?

a$)$Nlogn

b$)$nlogn

c$)$Power$[$n$,3]$

d$)$loglogn

e$)$Power$[$n$,3/2]$