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liraira [26]
3 years ago
8

g Define memory hierarchy. A. The rate at which information can be transferred from one place to another. B. Ordering storage sy

stems according to their speed, capacity, and cost. C. When the CPU tries to read from a memory location and it has to wait for the information to be retrieved from main memory. D. An I/O device, such as a keyboard, that is used to control a computer. E. A circuit that interfaces between a peripheral device and a bus connected to the CPU.

Computers and Technology
1 answer:
andrew-mc [135]3 years ago
3 0

Answer:

The correct option is B.

Explanation:

Memory hierarchy is the ordering of storage systems according to their speed, capacity and cost.

The hierarchy consist of Register as the top, followed by cache, then main memory, secondary memory and external storage. As you go down the hierarchy, the speed decreases, the size increases and the cost decreases also.

Memory hierarchy diagram is attached for reference.

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The function below takes one parameter: a dictionary (dictionary). Complete the function so that it prints out each value stored
frosja888 [35]

Answer:

  1. def processDict(dict):
  2.    for x in dict:
  3.        print(dict[x])
  4. dictA = {
  5.    "Name": "Tom",
  6.    "Age": 21,
  7.    "Gender": "Male"
  8. }
  9. processDict(dictA)

Explanation:

Firstly create a function and name it as processDict that takes one input dictionary, dict (Line 1).

Create a for loop to iterate through each of the dictionary key, x, and use that key to look up the corresponding value and print it out (Line 2-3).

We test the function using a sample dictionary (Line 5-11). We shall get the output:

Tom

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3 0
3 years ago
The 7-bit ASCII code for the character ‘&’ is: 0100110 An odd parity check bit is now added to this code so 8 bits are trans
Alex787 [66]

Answer

First part:

The transmitted 8-bit sequence for ASCII character '&' with odd parity will be 00100110. Here leftmost bit is odd parity bit.

Second part:

The invalid bit sequence are option a. 01001000 and d. 11100111

Explanation:

Explanation for first part:

In odd parity, check bit of either 0 or 1 is added to the binary number as leftmost bit for making the number of 1s in binary number odd.

If there are even number of 1s present in the original number then 1 is added as leftmost bit to make total number of 1s odd.

If there are odd number of 1s present in the original number then 0 is added as leftmost bit to keep the total number of 1s odd.  

Explanation for second part:

A valid odd parity bit sequence will always have odd number of 1s.

Since in option a and d,  total number of 1s are 2 and 6 i.e. even number. Therefore they are invalid odd parity check bit sequences.

And since in option b and c, total number of 1s are 5 and 7 i.e. odd numbers respectively. Therefore they are valid odd parity check bit sequences.

7 0
3 years ago
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