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d. What is the capacity of a standard CD?
(i) 700 MB (ii) 4.7 GB
(iii) 25 GB (iv) 128 GB
e. Find the optical storage device that uses a blue/violet laser light to read and write data.
(i) CD (ii) DVD
(iii) Blu-ray Disc (iv) Pen Drive
2. Fill in the blanks using the words from the help box.
Primary, 1024 Exabytes, Flash, Nibble
a. 1 Zettabyte is equal to ____________.
b. A combination of four bits makes up a ____________.
c. An SSD uses the technique of ____________ memory to store data.
d. ____________ memory is the main memory of the computer, which holds data and
instructions that the CPU is currently working on.
3. Answer in one or two words.
a. What is the non-volatile memory in a computer called? ____________
b. Where can a pen drive be connected to transfer data? ____________
c. What term is used for online storage that allows file sharing and syncing? ____________
d. What is another term for a binary digit? ____________
e. Which type of DVD allows only one-time recording? ____________
4. Think and answer.
a. How does primary memory differ from secondary memory?
______________________________________________________________________________
______________________________________________________________________________
b. Name different types of ROM.
______________________________________________________________________________
c. What is one benefit of using cloud storage over physical storage devices?
______________________________________________________________________________
d. What is the role of a hard disk in a computer?
______________________________________________________________________________
______________________________________________________________________________
Computer Memory 13

