रीड-ओनली मेमोरी जिसे उपयोगकर्ता द्वारा केवल एक बार संशोधित/प्रोग्राम किया जा सकता है, उसे किस रूप में जाना जाता है?

Which of the following statements is correct regarding primary memory and secondary memory?

Which of the following types of computer memory needs to be refreshed periodically?

Which of the following is considered as the primary memory of a computer?