Which two options allow an application to access a database? Choose 2 answers
- A . Structured Query Language (SQL)
- B . Java Database Connectivity (JDBC)
- C . Database management system (DBMS)
- D . Open Database Connectivity (ODBC) application
- E . Graphical user interface (GUI)
A, B
Explanation:
SQLis a standard language used to communicate with and manage databases. It allows applications to perform operations such as querying, updating, and managing data.
JDBCis an API in Java that enables Java applications to interact with databases. It provides methods for querying and updating data in a database using SQL.
DBMS (Database Management System) is the system software for creating and managing databases but not directly used by applications for database access.
ODBC (Open Database Connectivity) is another standard API but specific to applications in a broader range of languages and platforms.
GUI (Graphical User Interface) is a user interface and not a method for applications to access databases.
References:
"SQL: The Complete Reference" by James R. Groff and Paul N. Weinberg.
"Java Database Connectivity: JDBC and Java" by Daniel K. Akers.
What is the typical organizing principle of a database?
- A . Selective
- B . Projection
- C . Relational
- D . Modular
C
Explanation:
The relational model is the most common organizing principle of databases. In a relational database, data is organized into tables (or relations), where each table consists of rows and columns. Each row represents a record with a unique identifier, and each column represents a data field. This model allows for easy data retrieval and management through the use of structured query language (SQL).
A company may choose to use CDs, DVDs, hard drives, or even cloud storage for data backup.
Which aspect of data backup does this statement describe?
- A . Data mirroring
- B . Incremental backups
- C . Image backups
- D . Backup media
D
Explanation:
The statement refers to the different types of media that can be used for data backup. Backup media encompasses various storage devices and methods used to store copies of data. Examples include: CDs and DVDs: Optical storage media used for smaller-scale backups.
Hard drives: Mechanical or solid-state drives used for local and external backups.
Cloud storage: Online services providing remote storage and access to backups.
Choosing the appropriate backup media is crucial for ensuring data availability and recovery in case of data loss.
References
David M. Kroenke and Randall J. Boyle, "Using MIS," Pearson.
Curtis Preston, "Backup & Recovery: Inexpensive Backup Solutions for Open Systems," O’Reilly Media.
What is scope creep?
- A . Realization that the organization staffing is inadequate
- B . The extent of the project that lacks needed requirements
- C . Small changes in a project that lead to bigger changes
- D . When the project is completed in less than the required time
C
Explanation:
Scope creep refers to the phenomenon where the scope of a project gradually increases over time due to small, incremental changes that were not initially planned or approved. This can happen when: New featuresor requirements are added without proper evaluation or approval. Stakeholders continuously request small changes or additions. Lack of a clear scope definition and change control process.
These small changes can accumulate, leading to significant deviations from the original project plan, affecting the project’s schedule, budget, and overall success.
References
Project Management Institute, "A Guide to the Project Management Body of Knowledge (PMBOK Guide)," PMI.
Kathy Schwalbe, "Information Technology Project Management," Cengage Learning.
Which characteristic identifies intranet application software?
- A . Hosted by an outsourced provider
- B . Hosted in the internal business network
- C . Hosted by a third-party web portal
- D . Hosted on an individual computer
B
Explanation:
Intranet Application Software:
Intranet applications are designed to be used within an organization’s internal network. They are not accessible from outside the organization unless through a secure connection like a VPN.
Characteristics:
Internal Hosting: These applications are hosted on servers within the business network, ensuring that only authorized internal users can access them.
Security: Since they are hosted internally, they can be secured with internal security measures like
firewalls and access controls.
Incorrect
A: Describes applications hosted by external providers.
C: Describes applications hosted by third-party web portals.
D: Describes standalone applications on individual computers.
References:
Intranet applications: Intranet Applications
Intranet applications: Intranet Applications
What is a characteristic of algorithms?
- A . No starting or stopping point
- B . Random instructions
- C . Unambiguous rules
- D . Constantly changing
C
Explanation:
An algorithm is a defined set of step-by-step procedures or a set of rules to be followed to perform a specific task or solve a problem.
Here are the characteristics that describe an algorithm:
Unambiguous rules: Each step of an algorithm must be clearly defined and unambiguous. There should be no confusion in interpreting the instructions.
Definiteness: The algorithm should have a clear starting and stopping point, leading to a precise output after a finite number of steps.
Finiteness: Algorithms must terminate after a finite number of steps. They cannot run indefinitely.
Input and Output: An algorithm should take zero or more inputs and produce at least one output.
Therefore, the correct answer is "Unambiguous rules," as it directly reflects the essential characteristic of
an algorithm being precise and clear in its steps.
References
Thomas H. Cormen, Charles
E. Leiserson, Ronald L. Rivest, and Clifford Stein, "Introduction to Algorithms," MIT Press.
Donald
E. Knuth, "The Art of Computer Programming," Addison-Wesley.
In which state is data considered information?
- A . Raw
- B . Input
- C . Unprocessed
- D . Processed
D
Explanation:
Data is considered information when it has been processed and organized in a meaningful way. Raw data in its unprocessed state is not useful until it undergoes processing to become interpretable and actionable information. Processing can involve sorting, aggregating, and analyzing data to extract valuable insights.
What is true about an operating system?
- A . It is a firmware burned onto the computer mother board.
- B . It is a software program that directly supports the computer itself.
- C . It is a hardware component of the computer system.
- D . It is an application program similar to word processors.
B
Explanation:
Anoperating system (OS)is a system software that manages computer hardware and software resources and provides common services for computer programs.
It serves as an intermediary between users and the computer hardware.
Key functionsof an OS include:
Examples include Windows, Linux, and macOS.
References:
"Operating System Concepts" by Abraham Silberschatz, Greg Gagne, and Peter B. Galvin.
"Modern Operating Systems" by Andrew S. Tanenbaum.
Which operation converts raw data into information?
- A . Input
- B . Output
- C . Storage
- D . Processing
D
Explanation:
Processing is the operation that converts raw data into meaningful information. Input data is collected and then processed through various means such as calculations, comparisons, or formatting to produce output that can be interpreted and used by humans or other systems.
Which item is an input device?
- A . Printer
- B . Flash Drive
- C . CD
- D . Scanner
D
Explanation:
An input device is any hardware component that allows a user to enter data into a computer.
A scanner is an input device that converts physical documents into digital format.
The other
Therefore, a scanner is the correct answer for an input device.
References:
"Introduction to Computer Science" by ITL Education Solutions Limited, which discusses input and output devices.
"Digital Fundamentals" by Thomas L. Floyd, which includes information on various peripherals.
When is it better to purchase software rather than build a software solution in-house?
- A . When the company has very specific needs
- B . When the company wants internal growth
- C . When there is a short timeline
- D . When the company wants to develop the skill sets of its internal IT staff
C
Explanation:
It is better to purchase software rather than build a software solution in-house when there is a short timeline. Building software from scratch requires significant time for development, testing, and deployment. Purchasing off-the-shelf software can significantly reduce the time needed to implement a solution.
Other considerations include:
Cost-effectiveness: Pre-built software can be more cost-effective than developing a custom solution, especially when factoring in the costs of development, maintenance, and support.
Immediate availability: Purchased software is usually ready to deploy immediately, whereas custom development can take months or even years.
Proven reliability: Commercial software often has a track record of reliability and user support, reducing the risk of bugs and issues that may arise with custom development.
Therefore, when time is of the essence, purchasing software is the preferable option. References
Ian Sommerville, "Software Engineering," Pearson.
Steve McConnell, "Rapid Development: Taming Wild Software Schedules," Microsoft Press.
What is a function of a compiler?
- A . It translates a source code and creates an executable program that may be run at a later time.
- B . It takes the most recent instruction and translates it as machine language.
- C . It takes a program written in a high-level language and converts it to a different high-level language program.
- D . It gathers together multiple executable programs and translates them into a readable format.
A
Explanation:
A compiler translates high-level programming language code into machine code, creating an executable program.
Process: The compiler goes through various phases such as parsing, semantic analysis, and optimization to produce the final machine code.
Purpose: This machine code can be executed by the computer’s processor at a later time without the need for the original source code.
References
"Programming Language Pragmatics" by Michael L. Scott "Modern Compiler Implementation in C" by Andrew W. Appel
An employee needs to execute a program from the command line.
Which peripheral device should be used?
- A . Keyboard
- B . Hard drive
- C . Speaker
- D . Printer
A
Explanation:
The employee needs to execute a program from the command line, which requires inputting commands into the computer.
The primary device for inputting commands is the keyboard.
Other options like the hard drive, speaker, and printer are not used for inputting commands.
The hard drive is used for data storage.
The speaker outputs sound.
The printer outputs documents.
Therefore, the correct peripheral device for this task is the keyboard.
References:
"Computer Fundamentals" by Anita Goel, which discusses input devices and their uses.
"The Principles of Information Systems" by Ralph Stair and George Reynolds, which details peripheral devices and their functions.
Why should an information technology (IT) professional be aware of professional associations?
- A . Professional associations provide up-to-date training.
- B . Professional associations will ensure higher quality work.
- C . Professional associations upgrade the company’s network.
- D . Professional associations give feedback to management.
A
Explanation:
Professional associations are vital for IT professionals because they:
Provide up-to-date training: Offering courses, certifications, and workshops to keep members current with the latest technologies, practices, and industry standards.
Networking opportunities: Facilitating connections with other professionals in the field, which can lead to job opportunities and collaborations.
Professional development: Offering resources and support for career growth and development. Industry standards and best practices: Providing guidelines and frameworks to ensure high-quality work and ethical practices.
Staying engaged with professional associations helps IT professionals remain knowledgeable and competent in their field.
References
CompTIA, "Advancing the Global IT Industry."
ISACA, "Building a Better Digital World."
What are three operating systems that are commonly used today?
Choose 3 answers
- A . Microsoft Outlook
- B . Mac OS
- C . Linux
- D . MySQL
- E . Microsoft Windows
- F . Mozilla Firefox
B, C, E
Explanation:
Operating Systems:
Operating systems are software that manage computer hardware and software resources, providing common services for computer programs.
Commonly Used Operating Systems:
Mac OS: Developed by Apple Inc., used on Apple computers.
Linux: An open-source operating system used on a wide variety of devices from servers to personal computers.
Microsoft Windows: Developed by Microsoft, it is one of the most widely used operating systems for personal and business computers.
Not Operating Systems:
Microsoft Outlook: An email client, part of the Microsoft Office suite.
MySQL: A relational database management system.
Mozilla Firefox: A web browser.
References:
Types of operating systems: Types of Operating Systems
Mac OS: macOS
Linux: Linux
Microsoft Windows: Windows
Why is business continuity planning essential?
- A . It ensures that the company will be profitable.
- B . It ensures that the company will avoid asset loss.
- C . It allows for succession planning.
- D . It allows for the quickest return to business operations.
D
Explanation:
Business continuity planning (BCP) is essential because it ensures that an organization can quickly resume its critical functions after a disruption.
The key aspects include:
Minimizing downtime: Strategies to restore business operations as quickly as possible.
Risk management: Identifying potential threats and creating plans to mitigate their impact.
Data recovery: Ensuring that data can be restored quickly in the event of a loss.
Communication plans: Establishing protocols for communicating with employees, customers, and stakeholders during and after a disruption.
The primary goal of BCP is to ensure the quickest return to business operations, maintaining service
levels and minimizing financial losses.
References
Andrew Hiles, "The Definitive Handbook of Business Continuity Management," Wiley.
Michael Wallace and Lawrence Webber, "The Disaster Recovery Handbook," AMACOM.
Which device does a Local Area Network (LAN) need to communicate over the Internet?
- A . Multiplexer
- B . Repeater
- C . Switch
- D . Router
D
Explanation:
A Local Area Network (LAN) requires a router to communicate over the Internet.
The router serves as a gateway that connects the LAN to the external network (Internet) and directs data
traffic between the LAN and the Internet.
The other
Multiplexer combines multiple signals into one.
Repeater amplifies signals to extend the range.
Switch connects devices within the LAN but does not facilitate Internet communication. Therefore, a router is the necessary device for a LAN to communicate over the Internet.
References:
"Computer Networking: A Top-Down Approach" by James Kurose and Keith Ross, which explains network devices and their functions.
"CCNA Routing and Switching Study Guide" by Todd Lammle, which covers routers and their roles in networks.
How are IT and globalization related?
- A . IT allows businesses to have a global reach.
- B . IT allows businesses to reach global HIPAA compliance.
- C . IT allows businesses to create tax havens for global companies.
- D . IT allows businesses to create a global common gateway interface (CGI).
A
Explanation:
Information Technology (IT) has revolutionized the way businesses operate, enabling them to reach global markets and audiences. IT facilitates communication, data exchange, and operational efficiency across borders, allowing companies to manage global operations and engage with international customers seamlessly. This global reach is a critical aspect of modern business strategies, driven by advancements in IT infrastructure and services.
Which type of systems testing includes having end users test the system with simulated data and the help of the developer?
- A . User Acceptance
- B . Beta
- C . Alpha
- D . Analysis
C
Explanation:
Alpha testing is a type of system testing that involves having end users test the system with simulated data and the help of the developer.
This phase is crucial because:
Early feedback: Users provide early feedback on the usability and functionality of the system.
Bug identification: Developers can identify and fix bugs before the system is released for beta testing or production.
Simulated environment: The testing is done in a controlled, simulated environment, often within the development organization.
Alpha testing is followed by beta testing, where the system is tested in a real-world environment by end users without the developers’ direct involvement.
References
Ron Patton, "Software Testing," Sams Publishing.
Glenford J. Myers, "The Art of Software Testing," Wiley.
What is one purpose of an End User License Agreement?
- A . Allow customers to legally create and sell a new version of the software
- B . Allow customers to legally use the software
- C . Allow customers to legally modify and compile the source code
- D . Allow customers to legally distribute the application to other users
B
Explanation:
AnEnd User License Agreement (EULA)is a legal contract between the software manufacturer and the user.
The primary purpose of a EULA is togrant the user the right to use the software.
It outlines the terms and conditions under which the software can be used.
This can include restrictions on installation, distribution, and modification.
The EULA helps protect the intellectual property rights of the software creator.
References:
"Software Licensing Handbook" by Jeffrey I. Gordon.
"Intellectual Property and Open Source" by Van Lindberg.