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Bogdan [553]
3 years ago
12

Explain how a magnetic hard disk drive (HDD) operates.

Computers and Technology
1 answer:
QveST [7]3 years ago
7 0

Answer:

A magnetic disk drive consists of a number of platters (disks) coated in a magnetic material. They spin at around 7200 rpm . The data is encoded into bits and written onto the surface as a series of changes in the direction of the magnetisation. The data is read by detecting the changes in direction.

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Draw a full binary tree of height 2. How many nodes does it have?
Paraphin [41]

Answer:

The number of nodes in a full binary tree of height 2 = 7

Explanation:

At each level k, of the full binary tree there are usually 2^{k} \\ nodes.

So the full binary tree of height 2 has nodes= 2^{0} \\ + 2^{1} \\ + 2^{2} \\.

which is 7.

6 0
4 years ago
Consider the following class:
Pachacha [2.7K]

Answer:

c.return Integer.compare(value, otherTemp.value)

Explanation:

The compare() method as the name implies compares two integer values. If they are equal it returns 0, if the first number is smaller it returns -1, and if the first number is greater it returns 1.

It is an Integer class method that is why you need to type Integer.compare() to call the function.

For this example, the parameters that will be compared are <em>value</em>, and <em>otherTemp.value. </em>The type of compareTo method is an integer, we need to return the result.

3 0
3 years ago
When reading words using a Scanner object's next method, _________. a. any characters at the beginning of the input that are con
zavuch27 [327]

Answer:

The answer is "Option d"

Explanation:

The scanner method is the full token of the process, that finds and returns. It is token, which is followed by both the inputs meeting and the guideline template. This method can block, even though the former instance of hasNext() is true while waiting for input, and wrong choices can be described as follows:

  • In option a, It is incorrect because the character at the beginning can't be considered.
  • In option b, It is wrong because the characters are known as the word in which blank space not a part of the word.
  • In option c, It is wrong because in this input before the call is not the method.
3 0
3 years ago
Which guideline should you use when downloading software from the internet?
Anton [14]
Limiting your computer's vulnerability to malware is a crucial safe browsing habit. You can protect your computer by running antivirus<span> and </span>antimalware<span> software like </span>Bitdefender<span>, </span>Norton<span>, or </span>Kaspersky<span>. These programs can block malware from being installed and can remove it if it does get onto your computer. Even if you don't see signs of malware on your computer, running regular scans can catch any malware that has escaped notice.</span>
4 0
3 years ago
Read 2 more answers
Where in the computer is a variable such as "X" stored?
kow [346]

Answer:

The value of "x" is stored at "main memory".

Explanation:

Simply Central processing unit, input device and output device can not store the data.

7 0
3 years ago
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