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2 years ago

7

What if you accidentally delete your browser history

Computers and Technology

1 answer:

sergij07 [2.7K]2 years ago

5 0

Answer:

Nothing is ever deleted on a computer. Even though delete functions exist the data still remains somewhere in the computer, whether on the hard drive or in obscure files tucked away deep in the operating system. Recovering deleted internet history is quite straightforward if you know what you're doing.

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Which of the following is not a good use of a spreadsheet?

Ivanshal [37]

I’d say business letter

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3 years ago

The most basic function of firewalls is to

adelina 88 [10]

<span>A firewall is a network security system that monitors and controls the incoming and outgoing network traffic based on security rules that are configured by the network administrator.</span>

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3 years ago

Assume a program requires the execution of 50 x 106 FP instructions, 110 x 106 INT instructions, 80 x 106 L/S instructions, and

Molodets [167]

Explanation:

FP - $50 \times 10^6$

CPI - 1

INT - $110 \times 10^6$ ,

CPI - 1

I/S - $80 \times 10^6$ ,

CPI - 4

Branch - $16 \times 10^6$

CPI - 2

Clock Speed - $2 \times 10^9$

Time(old) = $\frac{50 x 10^6 + 110 x 10^6 + 4 x ( 80 x 10^6) + 2 x (16 x 10^ 6)}{2 x 10^9}$

Time(old) = $256 \times 10^ {-3}$

Time(new) = $\frac{256 \times 10^{-3}}{2}$

= $128 \times 10^{-3}$

= $\frac{CPI(new) x [50 x 10^6 + 110 x 10^6 + 4 x ( 80 x 10^6) + 2 x (16 x 10^ 6)]}{2 x 10^9}$

= $128 \times 10^{-3}$

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3 years ago

What is the hexadecimal equivalent for 11000101?

Makovka662 [10]

Answer: C5₁₆ ⇔ 11000101₂ ⇔ 197⏨

Explanation: 11000101 is a binary number

it's equivalent decimal number is

1x2⁷+ 1x2⁶+0x2⁵ + 0x2⁴+0x2³+1x2²+0x2¹+1x2⁰ = 128+64+4+1 = 197

Hexadecimal system has equivalents in decimal system

0 ⇔0

1 ⇔ 1

2 ⇔ 2

3 ⇔ 3

4 ⇔ 4

5 ⇔ 5

6 ⇔ 6

7 ⇔ 7

8 ⇔ 8

9 ⇔ 9

10 ⇔A

11 ⇔B

12 ⇔C

13 ⇔D

14 ⇔E

15 ⇔F

197 ⇔??

To convert this decimal number in a hexadecimal number we have to divide it by 16

197/16

12,...

the quotient without the decimal part is multiplied by 16 and subtracted from the number

12x16 = 192

197-192 = 5

Then this number can be expressed as 12x16¹ + 5x16⁰ = 192 + 5 = 197

But in the hexadecimal system there are not digits > 9 , so 12 ⇔ C

197⏨ = Cx16¹ + 5x16⁰ = C5₁₆

Answer: C5₁₆ ⇔ 11000101₂ ⇔ 197⏨

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