Questions

Static RAM: no refreshing, 6 to 8 MOS transistors are required to form one memory cell, information stored as voltage level in flip flop. 

Dynamic RAM: refreshed periodically, 3 to 4 transistors are required to form one memory cell, information is  stored as a charge in the gate to substrate capacitance.

When a process enters the system it is placed in the job queue.

A list of processes waiting for a particular I/O device is called device queue.

Historians divide the ancient history of Egypt into three periods. the Old Kingdom, the Middle Kingdom and the New Kingdom. The Old Kingdom is called the Age of the Pyramids.

Qatar country has decided to withdraw its membership from OPEC as of January 2019. The OPEC is The Organization of the Petroleum Exporting Countries founded in Baghdad, Iraq, with the signing of an agreement in September 1960 by five countries namely Islamic Republic of Iran, Iraq, Kuwait, Saudi Arabia and Venezuela. They were to become the Founder Members of the Organization.