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Sindrei [870]
3 years ago
6

"The _____ of the Open Systems Interconnection (OSI) model generates the receiver’s address and ensures the integrity of message

s by making sure packets are delivered without error, in sequence, and with no loss or duplication."
Computers and Technology
2 answers:
Alona [7]3 years ago
8 0

Answer:

The Transport Layer

Explanation:

The <em>Open Systems Interconnection (OSI)</em> is a series of networking procedures or protocols contained in layers, precisely seven 7 layers. It ensures that standard protocols are used by different systems to communicate. The OSI model comprises of seven abstract layers, they are:

7. Application Layer

6. Presentation Layer

5. Session Layer

4. Transport Layer

3. Network Layer

2. Datalink Layer

1. Physical Layer

Every layer uniquely carries out a specific function and communicates with the layers below and above it. When a user receives data, the flow on the OSI model is from Layer 1 to Layer 7, but if the user is transmitting data, the flow is from Layer 7 to Layer 1.

<em>The transport layer</em> ensures that end-to-end communication is carried out efficiently. It is also responsible for error control and flow control. During data transmission, data is collected from the session layer and broken down into segments, these segments are now sent to the Network layer. While when data is received, the transportation layer reassembles the broken down segments into data and sends it to the session layer.

aleksklad [387]3 years ago
7 0

Answer:

The transport layer

Explanation: Layer 4, is the transport layer of the Open System Interconnection (OSI), that handles message transfer of data between end systems or hosts and ensures complete packets transfer.

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A computer memory that acts as the main storage available to user for programs and data
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Primary storage. Primary storage (also known as main memory, internal memory, or prime memory), often referred to simply as memory, is the only one directly accessible to the CPU.

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2 years ago
A teacher has five students who have taken four tests. The teacher uses the following grading scale to assign a letter grade to
AlladinOne [14]

Answer:

#include <iostream>

using namespace std;

int main()

{

const int numofStudents = 5;//number of students

const int numofTests = 2;//number of tests taken by students

const int grade = 5;//number of grades available

char letter[grade] = { 'A','B','C','D','F' };

double table[numofStudents][numofTests];//defining 2darray with names and scores

string names[numofStudents];//storing names of students

for (int num = 0; num < numofStudents; num++)//storing names and scores of students

{

 cout << "Enter student's name: ";

 cin >> names[num];

 for (int test = 0; test < numofTests; test++)//scores loop

 {

  cout << "Enter the test score: ";

  cin >> table[num][test];

  if (table[num][test] < 0 || table[num][test]>100)//input validation

  {

   cout << "Invalid input. Try again" << endl;

   cin >> table[num][test];//input again

  }

 }

}

for (int i = 0;i < numofStudents;i++)//calculating averages and grades

{

 int sum = 0;

 cout << "Test scores for " << names[i] << ": " << endl;

 for (int j = 0;j < numofTests;j++)

 {

  cout << table[i][j] << " ";

  sum += table[i][j];//summing scores

 }

 cout << endl;

 float average = (float)sum / numofTests;//calculating the average

 cout << "Making an average of: "<< average;

 if (average <= 100 && average >= 90)//assigning a grade

 {

  cout << " and has received an " << letter[0];

 }

 else if (average <= 89 && average >= 80)

 {

  cout << " and has received a " << letter[1];

 }

 else if (average <= 79 && average >= 70)

 {

  cout << " and has received a " << letter[2];

 }

 else if (average <= 69 && average >= 60)

 {

  cout << " and has received a " << letter[3];

 }

 else if (average <= 59 && average >= 0)

 {

  cout << " and has received an " << letter[4];

 }

 else

 {

  cout << "Invalid scores entered." << endl;

 }

 cout << endl;

}

 return 0;

}

Explanation:

We first define the number of students, number of tests and number of grades available for assignments. We then fill in the 2D array of students names and their scores making sure assigning more than 100 and less than 0 is not allowed. We then sum the scores and retrieve an average. Using the average, a letter grade is assigned to that individual.

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