A company uses Routers R1 and R2 to connect to ISP1 and ISP2, respectively, with Routers I1 and I2 used at th e ISPs. R1 peers with I1 and R2; R2 peers with I2 and R1. R1 and R2 do not share a common subnet, relying on other routers internal to the Enterprise for IP connectivity between the two routers. Which of the following could be used to prevent potential routing loops in this design?()
A. Using an iBGP mesh inside the Enterprise core
B. Configuring default routes in the Enterprise pointing to both R1 and R2
C. Redistributing BGP routes into the Enterprise IGP
D. Tunneling the packets for the i BGP connection between R1 and R2
患者,男性,22岁,发现左膝下内侧无痛性肿物2年。X线片示胫骨上端内侧骨性突起,基底宽,肿物皮质与胫骨皮质相连。下列正确的手术治疗方案是()
A. 肿瘤切除,人工关节置换
B. 病灶周围纤维膜,软骨帽切除
C. 纤维膜,软骨帽,病骨切除
D. 纤维膜,软骨帽,病骨,基底周围部分正常骨和骨膜一并切除
E. 肿瘤局部切除术