Institution: Bangladesh Development Bank Exam: Bangladesh Development Bank Ltd - Officer (Cash) - 15.01.2016
Topic: ICT (তথ্য ও যোগাযোগ প্রযুক্তি), Subject: Computer and ICT (তথ্য ও যোগাযোগ প্রযুক্তি)

Best Answer Explained in Below-:

Volatile memory refers to a type of computer memory that requires continuous power to maintain the stored information. When power is lost or turned off, the data held in volatile memory is erased. In the context of the options provided, RAM (Random Access Memory) is the only type that is classified as volatile memory.

RAM is essential for a computer's performance, as it temporarily stores data and instructions that the CPU needs to access quickly during operation. Since RAM loses its data when the computer is turned off or restarted, it is considered volatile.

In contrast, BIOS (Basic Input/Output System), PROM (Programmable Read-Only Memory), and ROM (Read-Only Memory) are forms of non-volatile memory. Non-volatile memory retains data even when the power is disconnected, which is vital for storing firmware, system settings, and permanent data that should not be lost after a power outage.

Thus, the correct answer to the question "নিচের কোনটি volatile memory?" (Which of the following is volatile memory?) is A) RAM.