B.4 Practice Exam #2 (late April 2024)

Your company has surveillance cameras in your office, uses strong authentication protocols, and requires biometric factors for access control. These are all examples of what principle?

• Non-repudiation

• Authorization

• Integrity

• Authentication

Answer explanation

If someone is caught trespassing on a network or stealing data, they are probably going to say it wasn't them. Non-repudiation is taking measures to prove that it most definitely was. The examples in this scenario are all good examples of non-repudiation techniques.

Which of the following encoding schemes would MOST likely be used to represent an emoji?

• Binary

• ASCII

• Unicode

• Hexadecimal

A technician is installing a new SOHO wireless router.

Which of the following is the FIRST thing the technician should do to secure the router?

• Press the WPS button

• Adjust the radio power levels

• Disable SSID broadcast

• Change the router's default password

Answer explanation

The first security configuration on the router should be to change the router's default password.

Disabling the SSID broadcast may be desirable for added security but is not the first thing to do.

Adjusting the radio power levels will limit the broadcast area and may be desirable for added security but is not the first thing to do.

Pressing the WPS button temporarily broadcasts the SSID and passphrase which will degrade security.

Maria is working on the design for a program and has created the following pseudocode. What is the result of this pseudocode?

declare loanBalance as a decimal value equal to 0.00

declare loanLimit as a decimal value to 1000.00

declare withdrawal as a decimal value

While loanBalance >= 0

input withdrawal

loanBalance equals loanBalance  + withdrawal

print loanBalance

Loop

• It results in a syntax error.

• It displays the loan balance each time a withdrawal is made.

• It results in an infinite loop.

• It stops processing withdrawal input after 1000.00 is reached.

Answer explanation

loanBalance will always be equal to or greater than 0, and this creates an infinite loop because the While loop will always be true.

A value that's used to identify a record from a linked table is called a ________________.

• Borrowed Key

• Foreign Key

• Primary Key

• Linked Key

Answer explanation

When a primary key from one table is used as a field value in another linked table, it's called a foreign key.

Which of the following authentication types include security questions as a factor for providing security?

• Type 2 authentication

• Single sign-on authentication

• Type 3 authentication

• Type 1 authentication

Answer explanation

Type 1 authentication (something you know) is by far the most common authentication type and includes security questions.

Type 2 authentication (something you have) does not include security questions.

Type 3 authentication (something you are) does not include security questions.

Single sign-on authentication is a method for logging into one system to gain access to other related systems. It is not a type of authentication and does not focus on security questions.

Python is a general purpose programming language that is popular for creating websites and mobile applications. Python is known as a readable and user-friendly language. What does the following code do?

color = input('What is your favorite color?\n')
print('Your favorite color is %s.' % color)

• It sets the system color variable.

• It sends the output to a printer.

• It sets the font color to the color specified in the input.

• It gets input and produces output.

Answer explanation

The code gets input and produces output. The first line displays a question on the screen and waits for input. Once input is received, the variable color is set to the input. The second line displays the results of the input on the screen.

Which type of cable would be used to transfer audio signals using light?

• UTP

• Coaxial

• STP

• Fiber optic

Answer explanation

Fiber optic cables are used to transfer data using light.

Coaxial, UTP, and STP cables are all copper-based cables that transfer data using electrical signals.

In a relational database table, rows are better known as ______________.

• Categories

• Records

• Fields

• Instances

Answer explanation

Rows in databases are known as records. Each record has information from each database field.

Which of the following BEST describes the file "/Users/Hannah/Rivers.js"?

• "Rivers.js" is an image file in the "/Users/Hannah/" subfolder.

• "Rivers.js" is an executable file with a "/Users/Hannah/Rivers.js" filename.

• "Rivers.js" is an executable file in the "/Users/Hannah/" subfolder.

• It's an image file with a "/Users/Hannah/Rivers.js" filename.

Answer explanation

"Rivers.js" is best described as an executable file in the "/Users/Hannah/" subdirectory.

"Rivers.js" is an executable file, not an image file. And while "/Users/Hannah" is the subfolder where the file is located, the subfolder is generally not considered part of the filename.

"Rivers.js" is an executable file, not an image file.

While "Rivers.js" is an executable file, the "/Users/Hannah/" subfolder is generally not considered part of the filename.