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murzikaleks [220]
2 years ago
10

What are computer virus ? Explain in detail.In your answer include symptoms and prevention (3each)

Computers and Technology
1 answer:
Elenna [48]2 years ago
7 0

Answer:

Explanation:

A computer virus is a form of malicious software that piggybacks onto legitimate application code in order to spread and reproduce itself.

Like other types of malware, a virus is deployed by attackers to damage or take control of a computer. Its name comes from the method by which it infects its targets. A biological virus like HIV or the flu cannot reproduce on its own; it needs to hijack a cell to do that work for it, wreaking havoc on the infected organism in the process. Similarly, a computer virus isn't itself a standalone program. It's a code snippet that inserts itself into some other application. When that application runs, it executes the virus code, with results that range from the irritating to the disastrous.

Computer virus symptoms

How can you tell if a virus has slipped past your defenses? With some exceptions, like ransomware, viruses are not keen to alert you that they've compromised your computer. Just as a biological virus wants to keep its host alive so it can continue to use it as a vehicle to reproduce and spread, so too does a computer virus attempt to do its damage in the background while your computer still limps along. But there are ways to tell that you've been infected. Norton has a good list; symptoms include:

Unusually slow performance

Frequent crashes

Unknown or unfamiliar programs that start up when you turn on your computer

Mass emails being sent from your email account

Changes to your homepage or passwords

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Write a function with this prototype:
sp2606 [1]

Answer:

Following are the code to this question:

#include <iostream> //defining header file  

using namespace std;

void numbers(ostream &outs, const string& prefix, unsigned int levels); // method declaration

void numbers(ostream &outs, const string& prefix, unsigned int levels) //defining method number

{

string s; //defining string variable

if(levels == 0) //defining condition statement that check levels value is equal to 0

{

outs << prefix << endl;  //use value

}

else //define else part

{

for(char c = '1'; c <= '9'; c++) //define loop that calls numbers method

{

s = prefix + c + '.'; // holding value in s variable  

numbers(outs, s, levels-1); //call method numbers

}

}

}

int main() //defining main method

{

numbers(cout, "THERBLIG", 2); //call method numbers method that accepts value

return 0;

}

Output:

please find the attachment.

Explanation:

Program description:

  • In the given program, a method number is declared, that accepts three arguments in its parameter that are "outs, prefix, levels", and all the variable uses the address operator to hold its value.
  • Inside the method a conditional statement is used in which string variable s and a conditional statement is used, in if the block it checks level variable value is equal to 0. if it is false it will go to else block that uses the loop to call method.
  • In the main method we call the number method and pass the value in its parameter.  

5 0
3 years ago
How has the global marketplace used emerging technologies to expand businesses
madam [21]

Answer:

Information Technology (IT) has revolutionized the way organizations conduct business by enabling small and medium businesses to level the playing field with larger organizations. Small businesses use an array of technology based on everything from computer server stations to portable mobile devices to expand competitive advantages in the global economic marketplace and marketing environment. So, small & medium business organizations owners are considering implementing information technology (IT) in their planning process for streamlined integration. Thus, this process is leading to future business expansion locally as well as globally. This decision allows proprietors to create smooth business operations using the most effective information technology available. On the other hand, the Internet has further linked the overseas suppliers of goods and services and their buyers. During the e-commerce era, internet traffic is increasing day by day, and e-commerce business is in the hyper growth stage. Information technology tremendously helps to boost the expansion of the current and future of marketing environment; communication technology became faster than ever. Though, globalization creates a little challenge for multinational companies to share resources and knowledge across a number of businesses inside and outside the country. Outsourcing and freelancer ease this challenge because multinational companies recruit talent freelancers and outsource their projects to the highly expert vendors and then the works are done through the team of people very effectively and efficiently.

Explanation:

6 0
2 years ago
A(n) _________________________ conveys a visual representation of data.
Komok [63]
I believe that the answer to fit this sentence is chart. Hope that this answer helped! ☺
3 0
3 years ago
Why is Net WPM a better formula than Gross WPM to calculate typing speed?
sergeinik [125]
<span>Net speed can be calculated by deducting errors in gross wpm which is more accurate </span>
7 0
2 years ago
Read 2 more answers
A network technician is able to connect the switches between two offices, but the offices cannot communicate with each other, as
Contact [7]

Answer:

C) Router

Explanation:

In computer networking, the router's function is to stand in between diferent data lines and control the flow of data packets.  When a packet arrives from one direction, it reads the address information in the header to determine its direction. Note that the data lines will contain different IP addressing scheme, so considering the scenario in the above question, since the offices use different IP schemes, a router will serve the purpose of directing data packets to allow communication.

6 0
3 years ago
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