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Law Incorporation [45]
3 years ago
11

Which of the following scanning technique attackers use to bypass firewall rules, logging mechanism, and hide themselves as usua

l network traffic?
a. TCP connect scanning technique
b. FIN scanning technique
c. Stealth scanning technique
Computers and Technology
1 answer:
OLEGan [10]3 years ago
6 0

Answer: Stealth scanning technique

Explanation:

Stealth Scanning technique includes the following steps:

1. The client upon sending a single SYN packet to is responded by SYN/ACK packet if the port is open.

2. The port is assumed to be in closed state if the RST packe t is sent from the server.

3. This RST packet is sent by the client to close the initiation process so that a connection cannot be established.

You might be interested in
Modify class Time2 of fig 8.5, (which is split into four pictures) to include a tick method that increments the time stored in a
ArbitrLikvidat [17]

Explanation:

Complete Program:

NOTE:   The newly added statements are highlighted in bold.

// File: Time2.java

public class Time2

{

private int hour; // 0 - 23

private int minute; // 0 - 59

private int second; // 0 - 59

public Time2()

{

 this(0, 0, 0);

}

public Time2(int hour)

{

 this(hour, 0, 0);

}

public Time2(int hour, int minute)

{

 this(hour, minute, 0);

}

public Time2(int hour, int minute, int second)

{

 if(hour < 0 || hour >= 24)

  throw new IllegalArgumentException("hour must be 0-23");

 if(minute < 0 || minute >= 60)

  throw new IllegalArgumentException("minute must be 0-59");

 if(second < 0 || second >= 60)

  throw new IllegalArgumentException("second must be 0-59");

 this.hour = hour;

 this.minute = minute;

 this.second = second;

}

public Time2(Time2 time)

{

 this(time.getHour(), time.getMinute(), time.getSecond());

}

public void setTime(int hour, int minute, int second)

{

 if(hour < 0 || hour >= 24)

  throw new IllegalArgumentException("hour must be 0-23");

 if(minute < 0 || minute >= 60)

  throw new IllegalArgumentException("minute must be 0-59");

 if(second < 0 || second >= 60)

  throw new IllegalArgumentException("second must be 0-59");

 this.hour = hour;

 this.minute = minute;

 this.second = second;

}

public void setHour(int hour)

{

 if(hour < 0 || hour >= 24)

  throw new IllegalArgumentException("hour must be 0-23");

 

 this.hour = hour;

}

public void setMinute(int minute)

{

 if(minute < 0 || minute >= 60)

  throw new IllegalArgumentException("minute must be 0-59");

 

 this.minute = minute;

}

public void setSecond(int second)

{

 if(second < 0 || second >= 60)

  throw new IllegalArgumentException("second must be 0-59");

 

 this.second = second;

}

public int getHour()

{

 return hour;

}

public int getMinute()

{

 return minute;

}

public int getSecond()

{

 return second;

}

public String toUniversalString()

{

 return String.format("%02d:%02d:%02d", getHour(), getMinute(),

   getSecond());

}

public String toString()

{

 return String.format("%d:%02d:%02d %s",

   ((getHour() == 0 || getHour() == 12) ? 12 : getHour() % 12),

   getMinute(), getSecond(), (getHour() < 12 ? "AM" : "PM"));

}

// increment second

public void tick()

{

 if(second < 23)

 {

  second++;

 }

 else if(minute < 59)

 {

  second = 0;

  minute++;

 }

 else if(hour < 23)

 {

  second = 0;

  minute = 0;

  hour++;

 }

 else

 {

  second = 0;

  minute = 0;

  hour = 0;

 }    

}

// increment minute

public void incrementMinute()

{

 if(minute < 59)

 {

  minute++;

 }

 else if(hour < 23)

 {

  minute = 0;

  hour++;

 }

 else

 {

  minute = 0;

  hour = 0;

 }    

}

public void incrementHour()

{

 if(hour < 23)

 {

  hour++;

 }

 else

 {

  hour = 0;

 }    

}

}

------------------------------------------------------------------------------------------------------------

// File: Time2Test.java

public class Time2Test

{

  public static void main( String args[] )

  {      

     Time2 t = new Time2(22, 58, 59);

     System.out.println("Starting time: ");

     System.out.println("Time in 24 hours format: " + t.toUniversalString());

     System.out.println("Time in 12 hours format: " + t);

     System.out.println();

     

     t.incrementMinute();

     System.out.println("After incrementing one minute: ");

     System.out.println("Time in 24 hours format: " + t.toUniversalString());

     System.out.println("Time in 12 hours format: " + t);

     System.out.println();

     

     t.incrementHour();

     System.out.println("After incrementing one hour: ");

     System.out.println("Time in 24 hours format: " + t.toUniversalString());

     System.out.println("Time in 12 hours format: " + t);

     System.out.println();

     

     t.tick();

     System.out.println("After incrementing one second: ");

     System.out.println("Time in 24 hours format: " + t.toUniversalString());

     System.out.println("Time in 12 hours format: " + t);    

     System.out.println();

  }

}

4 0
3 years ago
Add Try/Catch error checking To make sure that the user enters valid values in your program. To catch negative values passed to
ryzh [129]

Answer:

int main()

{

 cout<<"Enter the size of array\n";

 int n;

 try{

 cin>>n;//get size of array

 if (n > 0){

 List list;//make object of list class

 try{

     list.init(n);//initialize the list

     list.fillData();//fill the data

     list.print();//print the data

     list.sortData();//sort the  data

     cout<<"\n--- After sorting the data---\n";

     list.print();//print the data

     cout<<"Enter the element to search\n";

     int x;

     cin>>x;//get element to search

     list.searchElement(x);//call the search function

 }

 catch (std::bad_alloc){

   cout<<"Sorry, could not allocate memory for list object.";

 }

 }else{

   throw('Negative Number detected');

 }

 }

 catch (int n){

   cout<<"The number should be a positive integer.";

 }

   return 0;

}

Explanation:

The try and catch keywords come in pairs, as they are used to control exceptions in the C++ source code. The try keyword checks for error in the source code given the condition (if the n integer variable is greater than 0). If the condition is met, the code in the try code block runs otherwise the catch keyword catches the error of a negative number (if the n variable in less than 0).

4 0
3 years ago
Write a loop to print 10 to 90 inclusive (this means it should include both the 10 and 90), 10 per line.​
Masja [62]

Answer:

c = 0

for x in range(10,91):

   print(x, end=" ")

   c = c + 1

   if c>=10:

       print(" ")

       c=0

Explanation:

8 0
3 years ago
Which of these is the most likely result if the internet download speed in your home is 25 Mbps?
sashaice [31]

Answer:

Streaming movies may stop to buffer

Explanation:

microphones have a set record limit, and games downloaded wont generate errors unless something in the code is wrong, printers don't really need to connect to internet to work except for some, and streaming movies buffer because as you are watching them it downloads the next few minutes.

3 0
3 years ago
The art element line is a moving point.<br><br><br> True or False
sergeinik [125]
I’m pretty sure the answer is true
3 0
3 years ago
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