<u>Explanation:</u>
It is important to bear in mind that a penetration tester (analyst) performs a risk management role of a firm's internal system by attempting to break into an IT system.
Here are the benefits to internal systems;
- They help detect security loopholes before a cyberattack.
- They determine how vulnerable a network or computer program is.
- They advise the IT firm's security teams on how to mitigate vulnerabilities detected.
Correct Answer:
c.
SELECT InvoiceNumber, VendorName
FROM Invoices JOIN Vendors ON Invoices.VendorID = Vendors.VendorID
WHERE InvoiceTotal IN (SELECT MAX(InvoiceTotal) FROM Invoices)
Explanation:
All options only differ on the WHERE clause:
a: WHERE InvoiceTotal = MAX(InvoiceTotal)
Fails because aggregate functions (like MAX, COUNT, etc) have to be used on the SELECT clause.
b: WHERE InvoiceTotal = (SELECT MAX(InvoiceTotal))
Fails because the SELECT clause is incomplete.
c: WHERE InvoiceTotal IN (SELECT MAX(InvoiceTotal) FROM Invoices)
This one is correct, and returns the InvoiceNumber and VendorName register with the largest value on the InvoiceTotal field.
Complete Question:
Which statement is true? Group of answer choices
A. Variables cannot be assigned and declared in the same statement
B. Variable names must contain at least one dollar sign
C. Variable names can be no more than 8 characters long
D. It is incorrect to initialize a string variable with a number
Answer:
D. It is incorrect to initialize a string variable with a number
Explanation:
- Options A-C are not correct
- Variables can be declared and assigned values on same statement like this int a =5;
- Variable names must not contain the dollar sign as this declaration int num =0; is legal without a dollar sign
- Variable names are not restricted to 8 characters long they can be longer
- In option D if you declare a variable of a particular type, you must assign a value of that type for example int s ="John" is wrong
