Jurisdictional questions arising upon motions to quash the service of process on supposed agents of foreign corporations have repeatedly been held by us to present questions for the court. Israel v. R. R., 262 N.C. 83, 136 S.E.2d 248; Farmer v. Ferris, 260 N.C. 619, 133 S.E.2d 492; Dumas v. R. R., 253 N.C. 501, 117 S.E.2d 426; Brown v. Coal Co., 208 N.C. 50, 178 S.E. 858; Lumber Co. v. Finance Co., 204 N.C. 285, 168 S.E. 219. Plaintiff's assignments of error to the court's findings of fact are overruled, because an examination of the evidence in the record before us shows that all challenged findings of fact are supported by competent evidence.