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4 years ago

Administering the database involves all these activities, except ________.

1 answer:

8 0

Administering the database involves all these activities, except ________. E. creating queries for database applications

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I need help pls, in this code if add row for example :

tankabanditka [31]

I thing is going project experiment everyone make plans and

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4 years ago

Write a program that will input a list of test scores in from the keyboard. When the user enters -1, print the average.

aivan3 [116]

Answer: -1 usually represents infinity.

Explanation:

It would keep going forever and not be able to stop without manually stopping it.

3 0

3 years ago

Read 2 more answers

Three PCs are on an Ethernet LAN, connected by a hub. Describe how the Ethernet protocol deals with collisions in this situation

sdas [7]

Answer:

All the ports in a hub are in the same collision domain and a hub sends frames from one host to all other hosts in the network. This makes it prone to collision and poor network throughput. Just like a network switch, it uses the CSMA/CD protocol to detect collision in its network.

A network switch reduces its collision domain to just a port and sends frames from one host to another using its mac table as a route. This makes the network very efficient with high throughput. It also uses the CSMA/CD protocol to detect collision

Explanation:

Switches and hubs are used in networking to connect computer devices in a network. A hub is an obsolete device networking that broadcast a frame to all other ports or host in the network except for the send host port. This increases the rate of collision as all the ports in a hub share the same collision domain. A switch is an efficient frame switching device in a network, which uses its MAC table to decide and find a destination host.

CSMA/CD is a collision detection protocol used in a network to detect and prevent a collision. With this protocol, a host is able to listen, wait, send and resend frames to prevent a collision.

3 0

3 years ago

Write a cout statement so the variable sales is displayed with a precision of three decimal places, with the decimal point alway

Lilit [14]

Answer:

The statement is as follows:

cout <<fixed<< setprecision(3) <<sales;

Explanation:

Here, I assume that the variable has already been declared.

The syntax to use is:

cout<<fixed<<setprecision(n)<<variable-name;

In this case:

$n = 3$ --- i.e. to 3 decimal places

And the variable name is: sales

So, when implemented, the instruction is:

cout <<fixed<< setprecision(3) <<sales;

5 0

4 years ago

Given main(), complete the Car class (in files Car.h and Car.cpp) with member functions to set and get the purchase price of a c

Snezhnost [94]

The C++ program to show and complete the Car class (in files Car.h and Car.cpp) with member functions to set and get the purchase price of a car is:

#ifndef CARH

#define CARH

class Car{

private:

int modelYear;

int purchasePrice;

int currentValue;

public:

void SetModelYear(int userYear);

int GetModelYear() const;

void SetPurchasePrice(int purchasePrice);

int GetPurchasePrice() const;

void CalcCurrentValue(int currentYear);

void PrintInfo();

};

#endif // CARH

#include<iostream>

#include<math.h>

#include "Car.h"

using namespace std;

void Car::SetModelYear(int userYear){

modelYear=userYear;

}

int Car::GetModelYear() const{

return modelYear;

}

void Car::SetPurchasePrice(int userPrice){

purchasePrice = userPrice;

}

int Car::GetPurchasePrice() const{

return purchasePrice;

}

void Car::CalcCurrentValue(int currentYear){

double depreciationRate = 0.15;

int carAge = currentYear- modelYear;

currentValue = (int)round(purchasePrice*pow((1-depreciationRate),carAge));

}

void Car::PrintInfo(){

cout<<"Car's information:\n";

cout<<"\t\tModel Year : "<<GetModelYear();

cout<<"\n\t\tPurchase price: "<<GetPurchasePrice();

cout<<"\n\t\tCurrentValue: "<<currentValue;

}

Administering the database involves all these​ activities, except​ ________.

Administering the database involves all these activities, except ________.