Answer:
Given:
Passwords are selected from 4 characters.
Character combinations are 26 lower case alphabetic characters.
Passwords attempts by adversary is at rate of 1 second.
To find:
Expected time to discover the correct password
Explanation:
Solution:
4 character combinations of 26 alphabetic characters at the rate of one attempt at every 1 second = 26 * 4 = 104
So 104 seconds is the time to discover the correct password. However this is the worst case scenario when adversary has to go through every possible combination. An average time or expected time to discover the correct password is:
13 * 4 = 52
You can also write it as 104 / 2 = 52 to discover the correct password. This is when at least half of the password attempts seem to be correct.
I know the answer for 1 is A
I don’t really understand what this question is asking 100%, but you can either walk into the McDonald’s you want to work at and ask for an application. They might give it to you, but will most likely tell you to apply online.
If they do tell you to apply online, go to the McDonald’s website and scroll all the way down to the bottom.
There are sections you can choose such as: About Us, Careers, Services, Community, and Contact Us.
Clearly you want to go to Careers.
Under Careers are: Education Opportunities, Employee Perks, Meet Our People, Working With Us, and Apply Now.
Click Apply Now and start your application.
The number of records or rows in a table using MySQL can be got by using the COUNT statement.
Explanation:
- To counts all of the rows in a table, whether they contain NULL values or not, use COUNT
- That form of the COUNT() function basically returns the number of rows in a result set returned by a SELECT statement
- The SQL COUNT() function returns the number of rows in a table satisfying the criteria specified in the WHERE clause.
- It sets the number of rows or non NULL column values.
- COUNT() returns 0 if there were no matching rows.
- The SQL COUNT function is an aggregate function that returns the number of rows returned by a query. You can use the COUNT function in the SELECT statement to get the number of employees, the number of employees in each department, the number of employees who hold a specific job, etc.
A computer system is a combination of software and hardware that links two different types of networks