The answer is D
Explanation: none
Answer:
1) SQL Server
SELECT Top 5 concate(first name,' ',last name) AS Full name, Current age AS Age, state AS Address, Phone number AS Contact number from actor ORDERBY Current age DSC ;
2) MySQL
SELECT concate(first name,' ',last name) AS Full name, Current age AS Age, state AS Address, Phone number AS Contact number from actor ORDERBY Current age DSC limit 5;
Explanation:
There two queries first having syntax works fine in SQL server and later with MySQL. All bold faced words are sql keywords. I assumed the tablename is actor as table name is not given if table name is any other replace actor with that name.
// Here is the required switch statement on response character
switch(response){
case 'y': // case to check if the response is y
cout<<" Your request is being processed ";
case 'n': // case to check for n
cout<<" Than you, anyway for your consideration";
case 'h': // case to check for h
cout<<"Sorry \, no help is currently available.";
default : // default case
cout<< Invalid entry: please try again.";
}
<u>Explanation:</u>
a.
- One user can read the private data of another user-privacy.
- One user can prevent another user from getting anything done-denial of service.
Indeed, in any multiprogramming and time-sharing environment since the computers of users are networked together, then it is very possible for a bad actor to read the private data of another user, or even prevent another user from accessing their computer by employing a denial of service attack on the network. In other words, the network would be unable to handle the request of users since has been overloaded by another user.
b. a. Yes - if we can ensure that the operating system prevents any sharing of data between users, either for reading or writing and fairly shares the computer, then we can achieve the same level of security.
