Answer:
See explaination
Explanation:
#include<iostream>
#include<map>
using namespace std;
bool contains(int arr[], int size){
map<int,int> nums;
for(int i=0; i< size; i++) nums[arr[i]]=1;
int product;
for(int i=0; i<size-1; i++){
for(int j=i+1;j<size;j++){
product = arr[i]*arr[j];
if (nums[product]==1) return true;
}
}
return false;
}
int main(){
int arr[] ={6,4,-3,-2,0,5};
cout<<boolalpha <<contains(arr,5)<<endl;
return 0;
}
Answer: A. Network Access Control (NAC)
Explanation:
The CORRECT answer is (A.) <em>Network Access Control (NAC)</em>. NAC refers to an method used in computer protection in which aspects such as antivirus, or host intrusion prevention among others are somehow consolidated in order to unify endpoint security. Such an approach allows the system authentication to enforce network security.
The command that can be used to display any email messages awaiting delivery alongside the reason that they were not delivered is known as Mailq.
<h3>What is Email?</h3>
Email stands for Electronic mail. It may be defined as a type of method that significantly involves the exchange of computer-stored messages from one user to one or more recipients via the internet.
The command "Mailq" stands for mail queue. It is the command in Linux that prints the queued mail gain in form of sending it to the user. This command prints a list of messages that are in the mail queue. It is the same as the Sendmail-bp command.
Therefore, "mailq" is the command that can be used to display any email messages awaiting delivery alongside the reason that they were not delivered.
To learn more about Email, refer to the link:brainly.com/question/24688558
#SPJ1
A query is a request for specific data from a database.
