Yesterday, November 10, at approximately 3 p.m, we had a temporary (68) ........ various network servers are housed

Câu hỏi :

Question 68 - 70 refer to following paragraph:
Yesterday, November 10, at approximately 3 p.m, we had a temporary (68) ........ various network servers are housed.
When he was finishing up, he found a loose wire which he connected the other day, so he had to reconnect it. However, it appears that when reconnecting it, he made some mistakes.
(69) ........ the machines affected were the new NS3, one of the primary name serves, and Happer, which controls the new operating (70) .......... systems.
Thanks
Bill

68. Yesterday, November 10, at approximately 3 p.m, we had a temporary (68) ........ various network servers are housed.