State the characteristic of fourth generation of
Computer?

Explanation:

they were fast and reliable.

easily moved from one place to another

and it was cheap

in an effort to stem the tide of refugees attempting to leave east berlin, the communist government of east germany begins building the berlin wall to divide east and west berlin. construction of the wall caused a short-term crisis in u.s.-soviet bloc relations, and the wall itself came to symbolize the cold war.

the answer is b: a lockout