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ankoles [38]
3 years ago
6

CSCU EXAM TEST FINAL1-A software or hardware that checks information coming from the Internet and depending on the applied confi

guration settings either blocks it or allows it to pass through is called: a-Antivirus b-Firewall c-Antispyware d-Malware 2-A device designed to forward data packets between networks is called: Router 3-A computer network service that allows clients to make indirect network connections to other network services is called 4- Which of the following answers list the protocol and port number used by a spam filter
Computers and Technology
1 answer:
Nastasia [14]3 years ago
3 0

Answer:

1. Firewall.

2. Router.

3. Proxy.

4. SMTP, 25.

Explanation:

1. A firewall is a network security protocol that monitors and controls inbound and outbound traffic based on set aside security rules.

Generally, a firewall is used to control access to a computer or network, as it creates a barrier between a computer or a network and the internet in order to protect against unauthorized access. It is a security system pre-installed on most computers to essentially inspect data being transmitted to or from a computer.

Furthermore, firewalls are typically bidirectional, it checks all sent and received data and only allow authorized traffic through.

2. A router can be defined as a network device that is designed typically for forwarding data packets between two or more networks based on a well-defined routing protocol.

A routing protocol can be defined as a set of defined rules or algorithms used by routers to determine the communication paths unto which data should be exchanged between the source router and destination or host device.

3. A proxy can be defined as a computer network service designed to avail end users (clients) the ability to connect indirectly to other network services. For example, a reverse proxy is a type of server that is placed right in front of other servers such as a web server and forwards or routes the user's (client) requests to those servers sitting behind it. When properly configured, reverse proxy helps to ensure security, reliability and good performance of a network.

4. A spam filter can be defined as a software program designed to process all incoming electronic messages (e-mails) and prevents any unsolicited or unwanted mail (spam) from entering the inbox of a client.

Generally, a spam filter uses SMTP with port number 25 to carry out its services.

SMTP is an acronym for Simple Mail Transfer Protocol and it uses the standard port number of 25 to provide clients with requested services.

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3 years ago
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Answer and Explanation:

#include <iostream>

#include <string>

#include <time.h>

#include <vector>

using namespace std;

//Takes user info

int user_info(string *name,char *gender){

   char G;

   cout<<"What is your name?: ";

   getline(cin, *name);

   cout<<"What is your gender(m/f):";

   cin>>G;

   cout<<endl;

   *gender = tolower(G);

   return 0;

}

//Toss coin(part 2)

bool coin_toss(double seed){

   double r;

   r = (double)seed/(double)RAND_MAX;

   //cout<<r;

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   return false;

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//check results

float toss_result(vector<char> v,int *h){

   int num_heads=0;

   int num_toss = v.size();

   *h = 0;

   for(int i=0;i<num_toss;i++){

       if(v[i]=='h'){num_heads++;(*h)++;}

   }

   return (float)num_heads/(float)num_toss;

}

void show_result(int total_num,int head_num,float ratio){

   cout<<"it took you "<<total_num<<" tosses to get 3 heads in a row"<<endl;

   cout<<"on average you flipped heads "<<(ratio*100)<<"% of the time"<<endl;

}

int main()

{

   string name;

   char gender;

   string K; //Mr or Mrs

 

   cout<<"Welcome to coin toss! Get 3 heads in row to win!"<<endl;

 

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   user_info(&name,&gender);

 

   if(gender == 'f') K = "Mrs.";

   else K = "Mr.";

 

   cout<<"Try to get 3 heads in a row. Good luck "<<K<<name<<"!"<<endl;

   char dummy = getchar();

 

   //part 2

   int num_toss;

   vector<char> toss_results;//store toss results

   bool result;//result of toss

   srand(time(0));

   while(true){

       //cout<<rand()<<endl;

       result = coin_toss(rand());

       cout<<"Press <enter> to flip"<<endl;

       while (1)

       {

           if ('\n' == getchar())

           break;

       }

     

 

     

       if(result) {toss_results.push_back('h');cout<<"HEAD"<<endl;}

       else {toss_results.push_back('t');cout<<"TAIL"<<endl;}

     

       num_toss = toss_results.size();

     

       if(num_toss>=3){

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               break;

           }

       }

   }

 

   //part 3

   float ratio_head;

   int num_of_heads;

   ratio_head = toss_result(toss_results,&num_of_heads);

 

   //part 4

 

   show_result(toss_results.size(),num_of_heads,ratio_head);

 

   return 0;

}

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8 0
4 years ago
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