Free Introduction to Bachelor of Computer Science Degree Questions and Answers

Question 1

Every night at midnight, you realize that some data are being secretly uploaded from your PC device to an unknown website. When you open the file, you discover that these documents are from the day's office job. What kind of instance is this?

Accepted Answer

Keylogger Attack

Answer

A keylogger is a type of malicious software or hardware that records every keystroke made on a keyboard. If data from your daily office job is being secretly uploaded from your PC, it strongly indicates that a keylogger has captured your input, such as documents typed or accessed, and is transmitting this sensitive information to an unauthorized third party. This perfectly matches the description of data exfiltration based on user activity.

Question 2

The payroll department of an organization sends an email to all of its employees. It specifies that in order for their paychecks to be sent to their accounts, the employees must transmit their updated banking information by the end of the day.
When questioned, the payroll division asserts that they have never sent such an email. What sort of example is that?

Accepted Answer

Phishing Attack

Answer

A phishing attack involves sending fraudulent communications that appear to originate from a legitimate and trusted source, such as a company's payroll department. The goal is to deceive recipients into divulging sensitive information, like banking details, or performing actions that compromise security. The scenario, where an email requests updated banking information but the legitimate payroll department denies sending it, is a classic example of a phishing attempt designed to steal financial data.

Question 3

Before granting employees access to a website, a corporation demands multi-factor authentication. Employees are required to use a security token that is texted to their mobile phones as one of the authentication elements.
What qualifies the employee in this system?

Accepted Answer

Possession

Answer

Multi-factor authentication typically relies on categories like 'something you know' (e.g., password), 'something you have' (e.g., a physical token or phone), and 'something you are' (e.g., biometric data). In this system, the security token texted to an employee's mobile phone falls under the 'possession' category. The employee must physically possess their mobile phone to receive and use this authentication element.

Question 4

Both sequential and parallel computing models are used to complete the same work. The sequential setup took 30 seconds, whereas the parallel model only needed 10 seconds.
What will the speedup parameter be going forward when using the parallel model?

Accepted Answer

3

Answer

Speedup is a performance metric calculated by dividing the execution time of a task on a sequential system by its execution time on a parallel system. In this case, the sequential setup took 30 seconds, and the parallel model took 10 seconds. Therefore, the speedup parameter is 30 seconds / 10 seconds, which equals 3. This indicates the parallel model is three times faster.

Question 5

For its newest autonomous vehicles, Ford Motor Company plans to create its own sensors. What scenario, where these sensors are simulated, would not constitute a parameter for testing?

Accepted Answer

Whether a swerve around a bend would cause a car accident

Answer

The question asks for a scenario that would *not* be a parameter for testing the *sensors* themselves. While a swerve causing an accident is a critical outcome for an autonomous vehicle, it tests the entire vehicle's control system, decision-making algorithms, and safety protocols, not solely the sensor's ability to detect and judge obstacles. Sensor testing focuses on their accuracy, range, and ability to perceive the environment, not the vehicle's reaction to that perception.

BCS - Bachelor Of Computer Science Degree Practice Test

BCS - Bachelor Of Computer Science Degree Practice Test

Free Introduction to Bachelor of Computer Science Degree Questions and Answers