Computer Memory and Storage

Semiconductor memory is a volatile memory.

C = $\dfrac{1t}{V}$ = $\dfrac{0.1 \times 10^{-12} \times 20 \times 10^-3}{0.5}$ = 4 × 10^-15 F

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The number of elements in the vector represents the size of the vector and the maximum number of elements stored in the vector is the capacity of the vector that is 10 in this case.

This method returns the total number of bytes of the memory avaliable to a program.

1 ZB = 10²¹ bytes 1 PB = 10¹⁵ bytes 1 TB = 10¹² bytes 1 KB = 10³ bytes

Now, increasing memory sizes of files will be F3 < F2.  This matches with option sequence, hence, this option is correct. 

Computer memory is traditionally classified into two broad categories: primary memory (RAM, ROM, cache) which is directly accessible by CPU, and secondary memory (HDD, SSD, optical) which provides permanent storage. Primary is volatile and faster; secondary is non-volatile and slower.

Secondary memory is classified into two main types based on technology: magnetic storage (hard disks, tape drives) and solid-state storage (SSD, flash drives). Some classifications include optical as a third category, but the most fundamental binary classification is magnetic vs. solid-state.

Hard disks have the highest data density among listed options, using magnetic storage with tracks and sectors that can store bits extremely close together. DVDs and CDs have lower density than modern hard disks. Floppy disks are obsolete with very low density. Tape drives have high capacity but lower density than hard disks.

Hard disks can store the maximum data among the options listed. Modern hard disks range from hundreds of GB to multiple TB. DVDs store 4.7-17 GB, CDs store 700 MB, floppy disks store 1.44 MB, and tape drives vary but are generally comparable to or less than hard disks in practical capacity.

Standard compact discs (CDs) have a storage capacity of 700 MB for data. The 1.44 MB option is for floppy disks, while 780 MB and 1024 MB are not standard CD capacities.

 Option (4) is correct.

RAM (Random Access Memory) is the primary volatile memory in a computer that stores data and programs currently in use. DSL (Digital Subscriber Line) is an internet connection technology, USB is a connection interface/port, and LAN (Local Area Network) is a network configuration - none of these refer to computer memory.