abiodun1991 said:

Which cloud service model is best for businesses that want to save money and time by not handling physical servers themselves?
answer
Software as a Service (SaaS)
Platform as a Service (PaaS)
Infrastructure as a Service (IaaS)
On-premises management

Explanation​

Click to expand...

The correct answer is: Infrastructure as a Service (IaaS).

IaaS provides virtualized computing resources over the internet, allowing businesses to rent servers and storage without the need to maintain physical hardware. This model offers flexibility and scalability, enabling companies to focus on their core business activities rather than managing infrastructure.

Software as a Service (SaaS) delivers software applications over the internet but does not provide underlying infrastructure.

Platform as a Service (PaaS) offers a platform allowing developers to build, deploy, and manage applications without managing the underlying infrastructure but still requires some level of server management.

On-premises management involves maintaining physical servers in-house, which is not what the question is asking for.

abiodun1991 said:

Which of the following is an example of a character variable?
3.14
False
"555-1212"
'7'

Explanation​

Click to expand...

An example of a character variable from the options provided is "555-1212".

"555-1212": This is a string of characters (enclosed in quotes) and represents a character variable.

3.14: This is a floating-point number, not a character variable.

False: This is a Boolean value, representing truthfulness, not a character variable.

'7': While this is a single character, it is often treated as a character data type (especially in some programming languages) rather than a character variable on its own. However, if we interpret "character variable" to mean a string of characters, "555-1212" is the more fitting example

abiodun1991 said:

What should you do if you hear about a data breach at a company where you have an account?

Ignore it
Change your password immediately
Delete your account
Complain on social media

Click to expand...

If you hear about a data breach at a company where you have an account, you should change your password immediately.

NOT:
Ignore it: This is risky, as your account could be vulnerable.
Delete your account: While this is an option, it may not be necessary if you can secure your account.
Complain on social media: This does not address the security risk and is not a proactive measure.

abiodun1991 said:

Which of the following lists the two most common smartphone operating systems?
answer
Windows and macOS
iPadOS and Windows
Linux and ChromeOS
Correct Answer:
Android and iOS

Explanation​

Click to expand...

Windows and macOS: These are primarily desktop operating systems, not common for smartphones.
iPadOS and Windows: iPadOS is for iPads, and Windows is a desktop OS; neither are primarily smartphone operating systems.
Linux and ChromeOS: While Linux can be used in some mobile devices, it is not a common smartphone OS. ChromeOS is mainly for Chromebooks and not designed for smartphones.

The most common smartphone operating systems are Android and iOS.

abiodun1991 said:

What is the purpose of the review process for apps before they are released in app stores?
To make sure they work well with the company's devices
To categorize them correctly
To ensure they are free
To increase their price

Explanation​

Click to expand...

The purpose of the review process for apps before they are released in app stores is to make sure they work well with the company's devices.

NOT

To categorize them correctly: While categorization is part of the process, it is not the primary purpose.
To ensure they are free: Apps can be free or paid, so ensuring they are free is not a main goal of the review.
To increase their price: The review process does not aim to set or increase app prices.

abiodun1991 said:

Which type of data model is the simplest?
Conceptual Data Model
Relational Data Model
Physical Data Model
Logical Data Model

Explanation​

Click to expand...

The Conceptual Data Model is the simplest type of data model.

Conceptual Data Model: This model focuses on high-level relationships and concepts within the data without getting into details about how the data will be stored or implemented. It provides a broad overview of the data and its relationships, making it the simplest and most abstract form.

NOT
Relational Data Model: More complex, this model organizes data into tables and focuses on the relationships between them.
Physical Data Model: This model specifies how data is physically stored in databases, detailing the actual structures and storage methods, making it more complex.
Logical Data Model: This model provides a more detailed representation of the data, including attributes and relationships, but is still not as detailed as the physical model.

abiodun1991 said:

Which of the following is a popular word processing program that requires a paid license?

LibreOffice Writer
Incorrect answer:
Apple's Pages
Microsoft Word
Google Docs

Explanation​

Click to expand...

Microsoft Word is the popular word processing program that requires a paid license.

Which of the following BEST describes smart lights?
They learn when people are indoors and what temperatures are comfortable to them.
They are voice-controlled devices that allow you to control other devices in your home.
Correct Answer:
They allow you to set a lighting schedule and power them on and off when you are away from home.
They allow you to stream video and audio, play games, and browse the Internet.

Explanation​

What is the purpose of the review process for apps before they are released in app stores?
To make sure they work well with the company's devices
To categorize them correctly
To ensure they are free
To increase their price

Explanation​

Which type of data model is the simplest?
Conceptual Data Model
Relational Data Model
Physical Data Model
Logical Data Model

Explanation​

Which of the following lists the two most common smartphone operating systems?
answer
Windows and macOS
iPadOS and Windows
Linux and ChromeOS
Correct Answer:
Android and iOS

Explanation​

What should you do if you hear about a data breach at a company where you have an account?

Ignore it
Change your password immediately
Delete your account
Complain on social media

What does it mean for an array to be multidimensional?
It is a type of function.
Correct Answer:
It can hold arrays within arrays.
It can only be used in one-dimensional space.
It can hold only one value.

Explanation​

What is the name of the backup tool built into Apple's operating system?
Clonezilla

Correct Answer:
Time Machine
Windows Backup
Acronis

Explanation​

Which of the following is a popular word processing program that requires a paid license?

LibreOffice Writer
Incorrect answer:
Apple's Pages
Microsoft Word
Google Docs

Explanation​

Which of the following is an example of a character variable?
3.14
False
"555-1212"
'7'

Explanation​

What happens when you enter a number as a character?
It gets deleted.
Correct Answer:
You cannot perform math operations with it.
You can perform math operations with it.

Explanation​

Who has a role in cybersecurity within a company?

Only the security team
Only the IT department
All employees
Only the managers

Explanation​

What should you be cautious about when using browser extensions?
answer
Hackers could trick you into spoofed websites.
They force you to use a different browser.
Hackers might change your cache.
They may cost a lot of money.

Explanation​

Which cloud service model is best for businesses that want to save money and time by not handling physical servers themselves?
answer
Software as a Service (SaaS)
Platform as a Service (PaaS)
Infrastructure as a Service (IaaS)
On-premises management

Explanation​

abiodun1991 said:

What is a false positive in antivirus software?
answer
Incorrect answer:
When the software fails to detect a virus
When the software deletes a necessary system file
When the software slows down your computer

Explanation​

Click to expand...

A false positive in antivirus software is when the software mistakenly identifies a harmless file as a virus. For example, an antivirus might flag a legitimate program as malicious, leading to unnecessary deletion or quarantine.

abiodun1991 said:

What does "Non-repudiation" mean?
A person cannot deny their actions
Information is stored and transferred as intended
Information is readily available to authorized users

Click to expand...

Non-repudiation means that a person cannot deny their actions or involvement in a transaction or communication. For example, if someone signs a digital contract, they cannot later claim they didn't sign it.

abiodun1991 said:

What component is primarily responsible for handling graphics in a gaming console?
answer
Incorrect answer:
CPU
SSD
RAM
GPU

Explanation​

please I want people to contribute , this is also a means of learning for anybody that attend Tech +.
thank you

Click to expand...

The correct answer is: GPU (Graphics Processing Unit).

GPU: The GPU is specifically designed to render images and animations, processing data simultaneously for high-quality visuals in games. It offloads graphics tasks from the CPU, allowing for better performance.

NOT:
CPU: While the CPU plays a role in overall system performance and can handle some graphics tasks, it's not specialized for handling the intensive graphics processing required for gaming.

SSD: An SSD is primarily a storage device. It's fast at storing and retrieving data, but it doesn't have the specialized hardware for processing graphics.
RAM: RAM is the system's short-term memory. It's used to store data that the CPU and other components need to access quickly, but it doesn't handle graphics processing.

What does "Non-repudiation" mean?
A person cannot deny their actions
Information is stored and transferred as intended
Information is readily available to authorized users

abiodun1991 said:

What does a conceptual data model focus on?
answer
Network configurations
Hardware details
High-level ideas
Specific database management systems
I want to review this question later.

which is the correct

Click to expand...

The correct answer is High-level ideas.

A conceptual data model focuses on the high-level structure of the data and the relationships between different data entities, without getting into the specifics of implementation, such as network configurations or hardware details. It provides a way to visualize and understand the data requirements of a system in a simplified manner.