Computer Science: Database Systems

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Questions and Answers

Why would an application need a database for persistent data storage?

To edit and save a PowerPoint presentation
To execute a compiled language
To store temporary data during a session
To save a customer's order information (correct)

Which of the following scenarios does not require a database for persistent data storage?

A student creates and saves a graphic image (correct)
A system manager edits and saves a network device's configuration
A customer fills out an online form to order a Bluetooth speaker
A business manager edits and saves a PowerPoint presentation

What type of permission should Alex, a system administrator, grant to a user to allow them to view and change files but not change permissions?

Full control permission
Read-only permission
Execute permission
Modify permission (correct)

Which of the following is an example of a scenario where a database would not be necessary for data storage?

A student creates and saves a graphic image (C) Signup and view all the answers

What is a common use case for a database in an application or utility?

Storing customer information for an online order (B) Signup and view all the answers

Which of the following statements is true about compiled languages?

They execute faster than interpreted languages (D) Signup and view all the answers

What type of software is designed to increase efficiency and organization?

Productivity software (A) Signup and view all the answers

What type of database feature provides a formatted, easy-to-read listing of the results of a query?

Form (C) Signup and view all the answers

Which of the following is a primary concern when it comes to sensitive information on a device?

Data security (C) Signup and view all the answers

What is the primary purpose of using a form in a database?

To present data (B) Signup and view all the answers

What is the best way to improve the security of sensitive information on a device if it is lost or stolen?

Encrypting the data (B) Signup and view all the answers

What type of software is designed to facilitate communication and collaboration between teams?

Collaboration software (C) Signup and view all the answers

What type of wiring is commonly used in a Local Area Network (LAN)?

Copper wiring (A) Signup and view all the answers

What is a critical component of a computer that connects to a LAN?

Network interface (adapter) (A) Signup and view all the answers

Which of the following digital communication media does not rely on the Internet?

SMS (A) Signup and view all the answers

What is a common application of Near Field Communications (NFC)?

Mobile payment (C) Signup and view all the answers

What is a network protocol used for in a LAN?

To facilitate communication between devices (A) Signup and view all the answers

What should be covered in a company's internet usage policy?

Appropriate use of company resources (C) Signup and view all the answers

What is a benefit of using Fiber optics in a LAN?

It offers higher bandwidth and faster data transfer rates (A) Signup and view all the answers

What is a characteristic of a Local Area Network (LAN)?

It is a private network that connects devices in a limited area (B) Signup and view all the answers

What is the primary concern when it comes to sensitive information on a device?

data protection (B) Signup and view all the answers

Which type of chip is responsible for processing audio input from a microphone and converting it into data?

DSP (D) Signup and view all the answers

What is the term used to describe computer systems that are interconnected to share information with each other?

Network clients (A) Signup and view all the answers

What is the primary purpose of a DSP chip?

To process audio input (D) Signup and view all the answers

What is the main benefit of using security controls?

To protect sensitive information (A) Signup and view all the answers

What is the primary function of a DLP chip?

To control access to sensitive information (D) Signup and view all the answers

What is the main benefit of using secure transactions?

To protect sensitive information during data transfer (D) Signup and view all the answers

What is the term used to describe the process of converting audio input into data?

Digital signal processing (A) Signup and view all the answers

When troubleshooting an issue, what is the MOST likely first step that should be taken?

Uninstall the last application or system update that was installed (B) Signup and view all the answers

What is an advantage of DisplayPort 1.4 over HDMI 2.0?

DisplayPort has a greater maximum bandwidth than HDMI (D) Signup and view all the answers

What data type is BEST suited for a software developer creating a variable to hold whole numbers and perform numeric operations?

Integer (D) Signup and view all the answers

What is the primary reason to uninstall the last application or system update that was installed when troubleshooting?

To revert to a known good state (A) Signup and view all the answers

Why is DisplayPort 1.4 a better choice for high-resolution displays?

It has a greater maximum bandwidth than HDMI 2.0 (D) Signup and view all the answers

What is the primary benefit of checking the voltage levels on the DC side of the power supply when troubleshooting?

To verify proper power supply function (A) Signup and view all the answers

What is the best course of action when a software developer encounters an error when running their application?

Uninstall the last application or system update that was installed (D) Signup and view all the answers

What is the primary advantage of using an Integer data type in software development?

It is used for whole numbers (D) Signup and view all the answers

Study Notes

Database and Persistence

A database is needed for persistent data storage in scenarios where data needs to be retained even after the application or utility is closed, such as when a customer fills out an online form to order a product.

File Permissions

To grant a user permission to view and change files but not change permissions, the NTFS permission "Modify" should be used.

Database Features

A "report" is a database feature that provides a formatted, easy-to-read listing of the results of a query.

Security

To improve the security of sensitive information on a device if it is lost or stolen, encryption should be used.

Digital Communication Media

SMS (Short Message Service) is a digital communication media that does not require a connection to the internet.

Employee Internet Usage

An employee handbook should cover topics such as internet usage, including policies on acceptable use, data protection, and security.

Troubleshooting

The first step in troubleshooting an issue should be to identify the problem and then take steps to resolve it, such as uninstalling the last application or system update that was installed.

DisplayPort

DisplayPort 1.4 has a greater maximum bandwidth than HDMI 2.0.

Data Types

The best data type for a variable that will hold whole numbers and perform numeric operations is an integer.

Audio Processing

The DSP (Digital Signal Processing) chip is responsible for processing audio input from a microphone and converting it into data.

Computer Systems

Computer systems that are interconnected to share information with each other are called network clients.

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Description

This quiz assesses knowledge of database systems, including scenarios that require persistent data storage. It covers concepts related to compiled languages and interpreted languages.