WLCQuizBee2025

Who is known as the "Father of Computer Security"?

• Alan Turing

• Auguste Kerckhoffs

• Robert Morris Sr.

• Willis Ware

Answer explanation

The father of computer security is widely considered to be Auguste Kerckhoffs, a Dutch linguist and cryptographer, whose work laid the foundation for modern cryptography and security principles. 

While not always referred to as the "father" of computer security, Willis Howard Ware (1920-2013) was a pioneering figure in computer science and a key figure in the early development of computer security and privacy. He co-developed the IAS machine, a blueprint for modern computers, and led early studies on computer security and privacy within the Pentagon. 

What approach does an online ordering app use to ensure reliability, scalability, and performance through Site Reliability Engineering (SRE)?

• Ignoring system failures

• Manual system monitoring

• Single-server operations

• Grubhub approach

Answer explanation

Grubhub, as a large-scale online ordering app, applies Site Reliability Engineering (SRE) principles to maintain reliability, scalability, and performance.

What was the codename for SQL Server 2012?

• Yukon

• Katmai

• Denali

• Aurora

Answer explanation

"Denali" refers to the highest mountain peak in North America, symbolizing high performance and scalability, which were key improvements in SQL Server 2012.

• SQL Server 2005 → Yukon

• SQL Server 2008 → Katmai

• SQL Server 2014 → Hekaton

Which of the following represents the language generated by the set {0,01}?

• {0}*

• {01}*

• {0} ∪ {01}

• {0} ^ {01}

Answer explanation

Explanation:

The given set {0,01} consists of the strings "0" and "01", which means the language it generates consists of either "0" or "01".

• The union symbol ∪ represents a choice between elements.

• {0} ∪ {01} correctly expresses that the language contains either the string "0" or the string "01".

Why are the other options incorrect?

• A) {0}* → This represents zero or more occurrences of "0", which includes "0", "00", "000", etc., but does not include "01".

• B) {01}* → This represents zero or more occurrences of "01", which includes "", "01", "0101", etc., but does not include "0" alone.

• D) {0} ^ {01} → This notation is not standard and does not correctly express the given language.

What is a fundamental aspect of email security?

• Encrypting and decrypting emails

• Using public Wi-Fi to send sensitive emails

• Opening email attachments from unknown senders

• Disabling spam filters for easier email access

Answer explanation

On the other hand, using public Wi-Fi, opening unknown attachments, and disabling spam filters increase the risk of phishing attacks, malware infections, and unauthorized access to emails.

Who is credited with introducing the concept of the Deep Web in 2001?

• Tim Berners-Lee

• Michael K. Bergman

• Edward Snowden

• Julian Assange

Answer explanation

Explanation of Answers:

• A) Tim Berners-Lee – He is the inventor of the World Wide Web (WWW) but was not involved in defining the Deep Web. He created the first web browser and introduced the first website in 1991.

• B) Michael K. Bergman – In 2001, he coined the term Deep Web in his paper "The Deep Web: Surfacing Hidden Value." He estimated that the Deep Web was significantly larger than the Surface Web.

• C) Edward Snowden – A former NSA contractor who leaked classified documents in 2013 about global surveillance programs. He is associated with privacy and cybersecurity, but not the Deep Web concept.

• D) Julian Assange – The founder of WikiLeaks, known for publishing classified documents, but he did not define or introduce the Deep Web.

What is dispatch latency in digital logic design primarily associated with?

• Context switching in operating systems

• The time taken for an instruction to be decoded

• Propagation delay in digital circuits

• The time a processor waits for I/O operations

Answer explanation

Explanation:

Dispatch latency generally refers to the delay before an operation or signal is executed. In digital logic design, this is closely related to propagation delay, which is the time it takes for a signal to travel through a logic gate or circuit.

Why the Other Options Are Incorrect:

• A) Context switching in operating systems – Dispatch latency in OS refers to the time taken to switch between processes, not digital circuits.

• B) The time taken for an instruction to be decoded – Instruction decoding happens in the CPU but is not the same as dispatch latency in logic circuits.

• D) The time a processor waits for I/O operations – This relates to I/O latency, not propagation delay in digital circuits.

What is a software-based emulator that allows developers to run and test Android applications on a computer without needing a physical Android device?

• Android Debug Bridge (ADB)

• Android Virtual Device (AVD)

• Google Play Services

• Android Software Development Kit (SDK)

Answer explanation

Explanation:

An Android Virtual Device (AVD) is a software-based emulator that enables developers to test and debug Android applications on a computer without requiring a physical device. It simulates different Android environments, including various screen sizes, hardware configurations, and Android versions.

Why the Other Options Are Incorrect:

• A) Android Debug Bridge (ADB) – ADB is a command-line tool used to communicate with Android devices but does not provide an emulator.

• C) Google Play Services – Google Play Services provides APIs and background services for Android apps but is not an emulator.

• D) Android Software Development Kit (SDK) – The SDK includes tools for Android development, but the AVD specifically provides the emulation environment.

What are the results of the following Python expressions?
1. 2 * * 9
2. q * * 2
3. 2 * * (3 * * 2)

• 512, 64, 512

• 54, 64, 512

• 512, 8, 81

• 256, 64, 729

Answer explanation

Explanation:

1. 2**9 → 512

   • 2**9 means 2 raised to the power of 9: 29=512

2. q**2 (assuming q = 8) → 64

   • If q = 8, then 8**2 means 8 squared: 8^2=64

3. 2**(3**2) → 512

   • 3**2 means 3 squared: 3^2=9

   • Now, 2**9 is calculated as: 2^9=2^9 = 512

Which of the following represents the result of the expression (A ∪ q) A (A ∩ q)?

• A ∪ q - (A ∩ q)

• A ∩ q

• A ∪ q

• q - A

Answer explanation

Explanation:

1. A ∪ q (Union): This includes all elements from A and q.

2. A ∩ q (Intersection): This includes elements that are in both A and q.

3. (A ∪ q) - (A ∩ q): This means we remove the common elements (A ∩ q) from the union (A ∪ q).

This results in elements that are only in A or only in q, but not in both—which is equivalent to the symmetric difference (A Δ q).

https://www.cuemath.com/algebra/a-intersection-b-union-c/