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Ghella [55]
3 years ago
5

Different network devices function at different network communication layers, depending on their purpose. Using the TCP/IP model

, identify the highest layer accessed by each of the following devices:(A) Router(B) Unmanaged switch(C) Wireless access point(D) Firewall
Computers and Technology
1 answer:
strojnjashka [21]3 years ago
6 0

Answer:

Router: layer 2

Unmanaged switch: layer 1

Wireless access point: layer 1

Firewall: layer 2

Explanation:

The TCP/IP networking model has four layers, namely,

- Application layer,

- Transport layer,

- Internet layer and

- Network access layer.

The network access layer is the equivalence of the physical and data-link layer in the OSI model. The unmanaged switch transmits frame in the collision domain and the wireless access point allows a collision free frame transfer between nodes. The frame and means of transmission are related to the network access layer of the TCP/IP model.

The Internet layer is an equivalence of the network layer in the OSI model, this is where the ip address is used to communicate within and to remote networks. The router is used to determine a path for packets to destination workstations. The firewall is used to stop unwanted packets from accessing a network. Packets are related to internet layer, so the router and firewall are operational in layer 2, internet layer.

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Write a Java method to delete a record from a B-tree of order n.
max2010maxim [7]

Answer:

Deleting a record on a B-tree consists of three main events:

- Searching the node where the key to be deleted exists

- Deleting the key

- Balancing the tree if required

Explanation:

q = NULL;

   p = tree;

   while (p) {

       i = nodesearch(p, key);

       q = p;

       if (i < used(p) -1 && key == k(p,i)) {

           found = TRUE;

           position = i;

           break;

       }

       p = son(p,i);

   }

   if (!found)

   else if (subtree(p)) {

         if (used(p) > ((n-1)/2)+1)

         delkey (p, position, key);

       else {

           replace (p, position, fsucc(p));

           p0 r1 p1 r2 p2 r3 ……. pn-1 rn-1 pn

           q = &fsucc(p);

           qpos = index of fsucc;

           if (used(rbrother(p)) > ((n-1)/2)+1)

               replace (q, qpos, sonsucc(q));

           else

               while (q && used(q) < (n-1)/2) {

                   concatenate(q, brother(q));

                   q = father(q);

               }

       }

   }

   else

   delkey(p, position, key);

}

6 0
3 years ago
How to insert header and page number in word 2016?
AleksAgata [21]
Insert - Header - choose header of your choice. Page numbers are below the Header icon

3 0
3 years ago
1. Grouping Data in a Pivot Table can help you do what?
valentina_108 [34]

Answer:

1.Grouping data in a PivotTable can help you show a subset of data to analyze. For example, you may want to group an unwieldy list of dates or times (date and time fields in the PivotTable) into quarters and months, like this image. Note:  The time grouping feature is new in Excel 2016.

2.Select the rows or columns you wish to grouP

On the Data tab, in the Outline group, click the Group command.  

In the Group dialog box, select Rows or Columns and click OK.

3.Select the rows or columns you wish to ungroup.

On the Data tab, in the Outline group, click the Ungroup command.  

In the Group dialog box, select Rows or Columns and click OK.

4.

1.Launch Microsoft Excel.

2

Browse to and open the workbook file containing the pivot table and source data for which you need filter data.

3

Select the worksheet containing the pivot tab and make it active by clicking the appropriate tab.

4

Determine the attribute by which you want to filter data in your pivot table.  

The attribute should be one of the column labels from the source data that is populating your pivot table.

For example, assume your source data contains sales by product, month and region. You could choose any one of these attributes for your filter and have your pivot table display data for only certain products, certain months or certain regions. Changing the filter field would determine which values for that attribute are shown.

5

Force the Pivot Table Wizard or Field List to launch by clicking a cell inside the pivot table.

6

Drag and drop the column label field name you wish to apply as a filter to the "Report Filter" section of the pivot table field list.  

This field name may already be in the "Column Labels" or "Row Labels" section.

It may be in the list of all field names as an unused field.

7

Set the filter to display one of the values for the field.  

You can set the filter to display all values or only one. Click the arrow beside the filtered label and check the "Select Multiple Items" check box if you would like to select certain values for your filter.

Explanation:

PLZ MARK ME AS A BRAINLIST ;)

4 0
3 years ago
Write a program that prompts the user to input a number. The program should then output the number and a message saying whether
Gala2k [10]

Answer:

Following is the program in C++ Language

#include <iostream> // header file

using namespace std; // namespace std

int main() // main method

{

   int n;  // variable declaration

   cout<<" Please enter the number :";

   cin>>n; // Read the number

   if(n>0) // check the condition when number is positive

   {

cout<<n<<endl<<"The number is Positive"; // Display number

   }

  else if(n<0) // check the condition when number is Negative

  {

cout<<n<<endl<<"The number is Negative";// Display number

  }

  else // check the condition when number is Zero

  {

cout<<n<<endl<<"The number is Zero";// Display number

  }

   return 0;

  }

Output:

Please enter the number:

64

The number is Positive

Explanation:

Following are the description of the program

  • Declared a variable "n" of int type.
  • Read the value of "n" by user.
  • Check the condition of positive number by using if block statement .If n>0 it print the number is positive.
  • Check the condition of negative number by using else if block statement If n<0 it print the number is negative.
  • Finally if both the above condition is fail it print the message " The number is Zero"

7 0
3 years ago
Number of byte required to store illumination
Rina8888 [55]
If we are talking about light that’s an whole different subject
5 0
3 years ago
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