Questions

Internet service providers (ISP's) emerged in the late 1980's and early 1990's.

The ARPANET was decommissioned in 1990.

By 1995, the Internet was fully commercialized in the U.S., when the NSFNet was decommissioned, removing the last restrictions on use of the Internet to carry commercial traffic.

The Central Processing Unit, consists of Arithmetic and logic unit and Control unit.

Sahar is the largest desert.It is located in Africa

Lithium is the lightest of all the metals due to its low atomic number among meetals

The owner first lost Rs. 100 in cash, but after the thief bought Rs. 60 goods, he get back that Rs. 100 but he lost Rs. 60 value of goods and Rs. 40 in change.

So, a total of 60 + 40 = Rs. 100 the owner lose.

Drowsiness is the state of feeling sleepyness and tired in the day time. It affects our senses especially the sense of vision.