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3 years ago

List the five parts of a system.describe them.

1 answer:

4 0

The five main parts of a system are:

1. The CPU
The CPU is the brain of the computer. It is the main part that does all th thinking and processing.

2. RAM
which stands for Random Access Memory. As implied in its name, it can be accessed at random times by the CPU. When you open a program, all the scripts and codes that are running need to be run of a separate memory bank. Thus, the RAM takes part.

3. Drives
Hard Drives, SSDs, USB Drives, and SD cards are all forms of main computer memory. That is where the computer stores the OS, your files, and its instructions.

4. Inputs/Outputs
By inputs and outputs i mean hardware, like Speakers (ouput), Monitors (output), Keyboard (input), and Mouse (input).

5. OS
The OS is the Operating System (e.g. Windows, Linux, Mac), which is the main instructions for the computer. It is what makes your computer usable.

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Give a linear-time algorithm to sort the ratios of n given pairs of integers between 1 and n. I.e., we need to sort, within O(n)

Volgvan

Answer:

Explanation:

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3 years ago

A user on a home network needs to boost the signal of the wireless router. What should the user purchase to accomplish this?

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Answer:

Repeater

Explanation:

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3 years ago

A web application starts when a client sends _______ to a server?

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A web application starts when a client sends a request to a server

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3 years ago

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3 years ago

a password to a certain database consists of digits that cannot be repeated. if the password is known to consist of at least 8 d

BaLLatris [955]

Answer:

$\frac{10!}{2}mins$

Explanation:

12 seconds to try one combination will be equivalent to $\frac{1}{12}\times 60 = \frac{1}{5} \ mins$

Password contain at least 8 digit i.e. password can contain 8, 9, 10 digit.

Password cannot contain more than 10 digit because it will give room for repetition which it is clearly stated that digit cannot be repeated.

Possible digit that can be used: 9,8,7,6,5,4,3,2,1,0.

Total number of passwords combination possible for each position in 8 digit.

1st position = 10, 2nd position = 9, 3rd position = 8, 4th position = 7, 5th position = 6, 6th position = 5, 7th position = 4, 8th position = 3. Total number of passwords combination possible in 8 digit is equivalent to $\frac{10!}{2}$ .

Total number of passwords combination possible for each position in 9 digit.

1st position = 10, 2nd position = 9, 3rd position = 8, 4th position = 7, 5th position = 6, 6th position = 5, 7th position = 4, 8th position = 3, 9th position = 2. Total number of passwords combination possible in 9 digit is equivalent to $\frac{10!}{1}$ .

Total number of passwords combination possible for each position in 10 digit.

1st position = 10, 2nd position = 9, 3rd position = 8, 4th position = 7, 5th position = 6, 6th position = 5, 7th position = 4, 8th position = 3, 9th position = 2, 10th position = 1. Total number of passwords combination possible in 10 digit is equivalent to 10!.

Adding them up and multiplying by $\frac{1}{5} \ mins$ to get the total number of time needed to guarantee access to database = $[\frac{10!}{2}\times\ \frac{10!}{1} \times 10!] \frac{1}{5}\ mins = \frac{10!}{2}$

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3 years ago