试题详情
- 单项选择题Which timing mode is most appropriate for an ONS 15454 that has lost its BITS-1 and optical references?()
A、 line timing
B、 loop timing
C、 internal timing
D、 through timing
E、 external timing
- C
关注下方微信公众号,在线模考后查看
热门试题
A、 line timing
B、 loop timing
C、 internal timing
D、 through timing
E、 external timing
关注下方微信公众号,在线模考后查看