Consider the following computer memory hierarchy diagram (top to bottom): Processor Registers, Cache Memory, Random Access Memory, Solid State Storage, Magnetic Hard Disk, Optical Disk Storage, Magnetic Tape.
As you travel down the memory hierarchy diagram shown above, then which of the following is true?
decreasing cost per bit and increasing access time
In a memory hierarchy, the fastest and most expensive storage sits at the top and the slowest and cheapest at the bottom. At the top you have processor registers and cache; below them come RAM, solid-state storage, magnetic hard disk, optical disk and magnetic tape.
Two properties change as you move DOWN the hierarchy:
1. Cost per bit: registers and cache use very expensive high-speed technology, while tape and optical disks are extremely cheap per bit. So as you go down, cost per bit DECREASES.
2. Access time: registers are accessed in nanoseconds, but a hard disk, optical disk or tape takes far longer to reach data. So as you go down, access time INCREASES (memory becomes slower).
Alongside these, capacity increases as you go down. Therefore the true combination is decreasing cost per bit together with increasing access time.
The choices pairing increasing cost or decreasing access time with downward movement invert the real trend and are wrong.
Correct answer: decreasing cost per bit and increasing access time.
Similar Questions
Which of the following statements are true?
A. CPU speed is measured in kilobytes (KB) and gigabytes (GB)
B. The size of a monitor is measured diagonally across the screen.
C. Laser Printer resolution is measured in dots per inch.
Choose the correct answer from the options given below:Which is the largest of these data storage capacities?
Given below are two statements:
Statement I: RAM is internal memory and its access time is slower than that of Cache memory.
Statement II: ROM loses its data when the power is turned off.
In the light of the above statements, choose the correct answer from the options given below:Give below are two statements:
Statement I : CDs and DVDs are described as magnetic storage devices.
Statement II : Laser printers are made up of a print head consisting of nozzles that sprays droplets of ink onto the paper to form characters.
In the light of the above statements, choose the correct answer from the options given below:
Which of the following are the advantages in using Solid State Drives (SSDs) rather than Hard Disk Drives (HDDs) in Laptop computers?
A. SSD is much lighter than HDD.
B. SSD has a lower power consumption than HDD.
C. SSDs are thick compared to HDDs due to no moving parts.Choose the correct answer from the options given below:
Which one of the following statements is true about flash memory technology?
Which of the following tasks is associated with changing appearance of a document in word processing?
Which statement is true about Random Access Memory (RAM) in a computer system?
Which of the following is a short-cut to “Undo Typing”?
Which of the following are pointing devices?
(a) Trackball
(b) Touchscreen
(c) Graphic Tablet
(d) Joystick
Code:
Important Questions from Computer Literacy
Arrange the following computer memory types from fastest to slowest speed:
(A) Hard Disk
(B) Main Memory (RAM)
(C) CD-ROM
(D) CPU Registers
(E) Cache Memory
Choose the correct answer from the options given below :
RAM is placed on
- Google Chrome and Mozilla Firefox are examples of
Which of the following represents the second phase in the traditional Systems Development Life Cycle (SDLC), typically following the preliminary investigation?
Which of the following keys of keyboard are called modifier keys?
a) Ctrl
b) Shift
c) End
d) Alt
Choose the correct option from those given below:
