Operating System Programming and Technical

Q. What is DRAM?

A. Dynamic Ram stores the data in the form of Capacitance, and Static RAM stores the data in Voltages.

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Operating System Other Question

Q. What is a data register and address register?

A. Data registers - can be assigned to a variety of functions by the programmer. They can be used with
any machine instruction that performs operations on data.
Address registers - contain main memory addresses of data and instructions or they contain a portion
of the address that is used in the calculation of the complete addresses. Q. What are local and global page replacements?

A. Local replacement means that an incoming page is brought in only to the relevant process' address
space. Global replacement policy allows any page frame from any process to be replaced. The latter
is applicable to variable partitions model only.