Software Development and Algorithm Design Quiz

Which of these are NOT a benefit of following a sequential design process?

• Clients may not know exactly what their requirements are before they see working software and so change their requirements, leading to redesign.

• Time spent early in the software production cycle can reduce costs at later stages.

• It places emphasis on documentation (such as requirements documents and design documents) as well as source code.

• It provides a structured approach, progresses linearly through discrete, easily understandable and explainable phases and thus is easy to understand.

How can an efficient algorithm design reduce power consumption?

• Algorithms that find the answer with the most precision reduce power.

• Algorithms that interact with the user more frequently are used more often.

• Algorithms that use fewer CPU cycles reduce demand on the processor.

• The higher the level of the coding language used, the more efficient the algorithm.

Which of the following is NOT true about Big O notation?

• It is used to classify algorithms according to how their running time or space requirements grow as the input size grows.

• In mathematics, it is commonly used to describe how closely a finite series approximates a given function.

• A description of a function in terms of big O notation usually provides the most accurate value of the function.

• The letter O is used because the growth rate of a function is also referred to as order of the function.

What does the notation O(N^2) mean when referring to an algorithm?

• it represents an algorithm whose performance is inversely proportional to the square of the size of the input data set

• it represents an algorithm whose performance is directly proportional to the size of the input data set

• it represents an algorithm whose performance is log 2 with respect to the size of the input data set

• it represents an algorithm whose performance is directly proportional to the square of the size of the input data set

Which of these is a best practice for protecting passwords or personal data?

• use strong passwords that are protected and not shared with anyone

• keep passwords in desk drawers instead of on top of the desk

• tell only trusted associates your password

• use email instead of your phone to send someone your password

Which of these would MOST alert you that you may have a possible email threat?

• Your bank sends you an email during non-business hours.

• You are asked to click on a link and share private information such as account numbers and passwords.

• An e-commerce site you use frequently sends you a notice at the end of the year that your credit card is about to expire.

• You get an email from your employer while you are at work.

What is the purpose of a firewall on your computer?

• To increase the speed of data communication on the internet.

• To remove viruses from your computer.

• To block unauthorized systems on the internet from gaining access to your computer and its data.

• To share data with identified friends and coworkers.

How does anti-virus software protect the computer?

• It blocks unauthorized systems on the internet from gaining access to your computer and its data.

• It identifies malicious code on the computer by scanning the code and then removes or quarantines that piece of code.

• It erases all of the computer’s temporary files that are no longer needed.

• It slows down the computer's processor so that viruses can't spread quickly enough.

Which of the following describes the Phishing scam?

• The fraudulent practice of sending emails purporting to be from reputable companies in order to induce individuals to reveal personal information, such as passwords and credit card numbers.

• A situation in which one person or program successfully masquerades as another by falsifying data, thereby gaining an illegitimate advantage.

• The use of electronic messaging systems to send an unsolicited message, especially advertising, as well as sending messages repeatedly on the same site.

• A perpetrator seeks to make a machine or network resource unavailable to its intended users by temporarily or indefinitely disrupting services of a host connected to the Internet.

Which of the following describes what spamming is?

• The fraudulent practice of sending emails purporting to be from reputable companies in order to induce individuals to reveal personal information, such as passwords and credit card numbers.

• The use of electronic messaging systems to send an unsolicited message, especially advertising, as well as sending messages repeatedly on the same site.

• A situation in which one person or program successfully masquerades as another by falsifying data, thereby gaining an illegitimate advantage.

• A perpetrator seeks to make a machine or network resource unavailable to its intended users by temporarily or indefinitely disrupting services of a host connected to the Internet.