Memories which can be read only are called __________.

RAM
ROM
DRAM
Vertual Memory E. Secondary Memory

The correct answer is B. ROM.

  • RAM (Random Access Memory) is a type of computer memory that can be accessed randomly; that is, any byte of memory can be accessed without touching the preceding bytes. RAM is typically used to store data and instructions that the computer is actively using.
  • ROM (Read-Only Memory) is a type of computer memory that can be read but not written to. ROM is typically used to store firmware, which is the software that controls the basic functions of a device.
  • DRAM (Dynamic Random Access Memory) is a type of RAM that requires a constant refresh of its contents in order to retain them. DRAM is typically used as the main memory in personal computers and other devices.
  • Virtual Memory is a technique that allows a computer to use disk space to simulate additional RAM. Virtual memory is used to increase the amount of memory available to a program, and to improve the performance of the computer.
  • Secondary Memory is a type of computer memory that is not directly accessible by the CPU. Secondary memory is typically used to store data and programs that are not currently being used.

In conclusion, ROM is the correct answer because it is a type of computer memory that can be read but not written to.