How many layers are in the OSI model?

There is a simple method for constructing a magic square for any odd value of n:

DaniilM [7]

Answer:

See Explaination

Explanation:

class MagicSquare():

def __init__(self,side):

self.side=side

self.two_dimension=[]

for row in range(1,side+1):

row_line=[]

for col in range(1,side+1):

row_line.append(0)

self.two_dimension.append(row_line)

def display(self):

row=0

col=int((self.side-1)/2)

for i in range(1,self.side**2+1):

self.two_dimension[row][col]=i

row-=1

col+=1

if row==-1:

row=self.side-1

if col==self.side:

col=0

if self.two_dimension[row][col]==0:

continue

else:

row+=1

if row==self.side:

row==0

for line in self.two_dimension:

for num in line:

print("{0:>3}".format(num),end=" ")

print()

def main():

for i in range(1,14,2):

square=MagicSquare(i)

square.display()

print("----------------------------------------------------")

if __name__ == '__main__':

main()

3 0

4 years ago

List and the deference between MS access objects

Dafna11 [192]

Answer:

MS access objects help the user list , information and designed reports .

Explanation:

MS access objects are create a forms, data base, tables,queries, and modules. There are many objects are following:-Tables, Forms,Reports, Queries.

Table:- These are objects used into a define and store the data,tables are contain the columns and the store of different data.

Form:- Form is the object that designed by the data input and control application queries or tables, forms are used in viewing records.

Reports:- Reports are the designed to the printing and calculating data,reports are used because data in read to easy format.

Queries:- Queries are provides that data from one or more table,you can define the update ,delete, insert, select data.

4 0

4 years ago

Suppose you are an ISP that owns a / 22 IPv4 address block. Can you accommodate requests from six customers who need addresses f

lisabon 2012 [21]

Answer:

It is not possible.

Explanation:

In this example, we need to accommodate 473 computers for six clients that are 473 IP addresses.

For this request just we have /22 IPv4 address blocks, this mean

22 red bits 11111111111111111111110000000000 <--- 10 host bits

We must increase red bits to 25, we need these 3 bits to create 6 sub red, in this case, 2^3 = 8 sub red.

Why did we ask 3 bits? Because if we ask only 2, 2^2 = 4, and we need 6 sub red.

25 red bits 11111111111111111111111110000000 7 host bits

In this case, we need more than 260 computers, but just we have 7 bits, this means.

2^7 = 128 and just one customer needs 260, for that is impossible.

7 0

3 years ago

Who invented the system of logarithm in 1614 AD

IgorC [24]

Answer:

JOHN NAPIER

Explanation:

The method of logarithms was publicly propounded by John Napier in 1614, in a book entitled Mirifici Logarithmorum Canonis Descriptio (Description of the Wonderful Rule of Logarithms). The book contained fifty-seven pages of explanatory matter and ninety pages of tables related to natural logarithms.

8 0

3 years ago

Read 2 more answers

try the following code to see a nullpointer error (if you don’t see the error because of the autograding, you can copy it into t

gavmur [86]

Using the knowledge of computational language in JAVA it is possible to describe since s is null, indexof throws an nullpointer error for s. comment out the first if statement and run the program again. the second if statement avoids the error with shortcircuit evaluation.

<h3>Writting the code:</h3>

public class Printer {

private String name;

public void print() {

printString(name);

}

public class Example {

public static void main(String[] args) {

Object obj = null;

obj.hashCode();

}

}

public static void main(String[] args) {

Printer printer = new Printer();

printer.print();

}

}

}

public class Example {

public static void main(String[] args) {

Object obj = null;

obj.hashCode();

}

}

public static void main(String[] args) {

Printer printer = new Printer("123");

printer.print();

}

}

See more about python at brainly.com/question/19705654

#SPJ1

4 0

1 year ago