When the procession to the gallows is interrupted by a dog (which "made a dash for the prisoner and . . . tried to lick his face"), what does the superintendent say?
【单选题】Distribution layer: This layer includes LAN-based routers and layer 3 switches . When is a first-hop redundancy protocol needed in the distribution layer?()
A.
OSPF is not supported by the design
B.
HSRP is not supported by the design
C.
preempt tuning of the default gateway is needed
D.
the design implements Layer 3 between the access switch and the distribution switch
【简答题】将下列短文翻译为中文: (1) Three physical principles make a useful first description of the way a bipolar transistor works. (2) (a) The externally applied voltages control the ratio of the carrier densities on t...