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3 years ago

Define the terms data and information ??

Computers and Technology

2 answers:

lora16 [44]3 years ago

5 0

Answer:

Data is an individual unit that contains raw materials which do not carry any specific meaning. Information is a group of data that collectively carries a logical meaning. Data doesn't depend on information. Information depends on data. It is measured in bits and bytes.

Dahasolnce [82]3 years ago

3 0

Data refers to raw unprocessed facts while information refers to data or raw facts that have undergone processing.

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Which of the following statements is true? 1. The Internet is just a network of computers. 2. The internet is now an Internet of

lisabon 2012 [21]

Answer:

All statements are true

Explanation:

The internet is a network of globally interconnected millions of computers that communicate wit themselves remotely using standardized communication protocols via a web server.
The internet is also refer to as internet of things (IoT)as devices and gadgets in homes and cars can now be connected to the internet with the exchange of billions of information using cheap processors and WLAN
Everything on IoT needs an Internet Protocol address (like an house address) to function and exchange data.
It must be be able to exchange information with other inter-connected devices for it to be an IoT.

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4 years ago

An advantage of keeping data in lists, in Excel, is that if you update a data value in one row of data in a list, other occurren

Vsevolod [243]

Answer: The answer is True

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3 years ago

A 1 MB digital file needs to transmit a channel with bandwidth of 10 MHz and the SNR is 10 dB. What is the minimum amount of tim

hodyreva [135]

Answer:

A 1 MB digital file needs 0.23 seconds to transfer over a channel with bandwidth 10 MHz and SNR 10 dB.

Explanation:

We can calculate the channel capacity using Shannon's Capacity formula:

C = B + log₂ (1 + SNR)

Where C = Channel Capacity

B = Bandwidth of the Channel

SNR = Signal to Noise Ratio

We are given SNR in dB so we need to convert it into a ratio.

$SNR_{dB}$ = 10log₁₀ (SNR)

10 = 10log₁₀ (SNR)

1 = log₁₀ (SNR)

SNR = 10¹

SNR = 10

So, using Shannon Channel Capacity formula:

C = 10 x 10⁶ log₂ (1 + 10)

C = 34.5 MHz

Total amount of time required to transmit a 1MB file:

1MB = 1 x 8 Mbytes = 8Mb

C = 34.5 MHz = 34.5 Mb/s

Time required = 8Mb/34.5Mb/s = 0.23 seconds

A 1 MB digital file needs 0.23 seconds to transfer over a channel with bandwidth 10 MHz and SNR 10 dB.

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3 years ago

Which of the statements below are true about Digital Signatures?

Leokris [45]

Answer:

The answer is "Option a, and c".

Explanation:

Following are the description of the Digital Signature choices:

To change the physical transportation of paper or link files in the computerized messaging system, some processes should be identified and utilized in digital signatures, which enables documentation to be validated unforgivably.
Using public-key cryptography, digital signatures, that's an exquisite system, that's why options a and b are correct.
Digital signatures are not a central authority, that's why the option B is wrong.

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3 years ago

What is number system

schepotkina [342]

★ Defination:

The number system or the numeral system is the system of naming or representing numbers. The number system helps to represent numbers in a small symbol set.

★ Tips:

The value of any digit in a number can be determined by:

• The digit

• Its position in the number

• The base of the number system

★ Types of number system:

There are various types of number system in mathematics. The four most common number system types are:

• Decimal number system (Base- 10)

• Binary number system (Base- 2)

• Octal number system (Base-8)

• Hexadecimal number system (Base- 16)

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3 years ago

Define the terms data and information ??​

Define the terms data and information ??