Free Practice Questions for CompTIA FC0-U61 Exam

A sequence is an element that will automatically store customer orders consecutively by order number every time a new order is placed. A sequence is a database object that generates sequential numbers according to a specified rule. A sequence can be used to create unique identifiers for records in a table, such as order numbers or customer IDs. A vector is an element that can store multiple values of the same data type in an ordered sequence, but it does not automatically generate sequential numbers. A vector is a data structure that can be used in programming languages such as C++ or Java. An array is an element that can store multiple values of the same data type in an indexed sequence, but it does not automatically generate sequential numbers. An array is a data structure that can be used in programming languages such as C or Python. A constant is an element that can store a single value of any data type that does not change during the execution of a program, but it does not automatically generate sequential numbers. A constant is a variable that can be used in programming languages such as C# or JavaScript. References: The Official CompTIA IT Fundamentals (ITF+) Student Guide (Exam FC0-U61), Chapter 6: Database Fundamentals, Chapter 8: Software Development Concepts

Spreadsheet software is a type of software that allows users to enter text and numbers in a grid of cells and perform calculations and analysis on the data. Spreadsheet software can also produce charts that demonstrate sales figures or other trends. Examples of spreadsheet software are Microsoft Excel, Google Sheets, and LibreOffice Calc.

References: CompTIA IT Fundamentals+ Study Guide: Exam FC0-U61, Second Edition, Chapter 7: Software Installation and Functions, page 266.

 A type 1 hypervisor OS, also known as a bare-metal hypervisor, is a software layer that runs directly on the hardware and allows multiple operating systems to run as virtual machines on the same host. This is the best choice for the test server because it provides the highest performance, isolation, and flexibility for testing different operating systems. A type 1 hypervisor OS can also support live migration, replication, and backup of virtual machines. A server OS is an operating system that is designed to run on a server, which is a computer that provides services to other computers on a network. A server OS may not support multiple operating systems or virtualization, and may have different hardware and software requirements than a test server. An embedded OS is an operating system that is embedded in a device, such as a smartphone, tablet, or smart TV. An embedded OS is usually optimized for a specific function and hardware, and may not support multiple operating systems or virtualization. A workstation OS is an operating system that is designed to run on a workstation, which is a high-end computer that is used for intensive tasks, such as graphics, video editing, or engineering. A workstation OS may support multiple operating systems or virtualization, but it may not have the same features and capabilities as a type 1 hypervisor OS, such as live migration, replication, and backup of virtual machines. References:

CompTIA IT Fundamentals (ITF+) Certification Guide, page 311

Introduction to Hyper-V on Windows 10

A solid-state drive (SSD) is a non-magnetic storage device that uses flash memory to store data. It is preferred in situations requiring high durability, speed, and reliability over several years. Unlike traditional hard drives, SSDs have no moving parts and are immune to magnetic fields, which makes them a better choice for long-term data storage in critical projects. SSDs also offer faster read/write speeds compared to hard drives or tape drives.

A USB flash drive is a viable non-magnetic option but typically has smaller storage capacities and less durability for long-term projects.

Tape drives are magnetic and used mainly for archival storage, not frequent access.

Hard disks are magnetic and susceptible to physical damage and slower performance over time.

References:

CompTIA A+ Core 1 (220-1001) Exam Objectives

Official CompTIA IT Fundamentals (ITF+) Certification Training

A NoSQL database is a type of database that does not use tables, rows, and columns to organize data. Instead, it uses keys and values to store data in a flexible and scalable way. A key is a unique identifier for a piece of data, and a value is the data itself. For example:

{ “name”: “Alice”, “age”: 25, “city”: “New York” }

In this example, name, age, and city are keys, and Alice, 25, and New York are values.

References: CompTIA IT Fundamentals+ Study Guide: Exam FC0-U61, Second Edition, Chapter 5: Database Fundamentals, page 196.

Variety is the database feature that refers to the ability to store different types of data, such as dates, times, names, and amounts. A database that supports variety can handle diverse and complex data formats, which is useful for applications that need to store information from various sources or domains. Concurrency, speed, and scalability are also important database features, but they are not directly related to the types of data that can be stored. References: CompTIA IT Fundamentals+ FC0-U61 Cert Guide, Chapter 25: Database Concepts, page 481; CompTIA IT Fundamentals (ITF+) Study Guide, Chapter 7: Database Fundamentals, page 173.

A website that is not secure means that the connection between the user’s browser and the web server is not encrypted or authenticated. This can expose the user’s data to interception, modification, or impersonation by attackers. One way to secure a website is to use HTTPS (Hypertext Transfer Protocol Secure), which is a protocol that encrypts and verifies the data exchanged between the browser and the server. HTTPS relies on certificates, which are digital documents that contain information about the identity and public key of the website owner. Certificates are issued by trusted authorities called certificate authorities (CAs), which verify the legitimacy of the website owner before issuing a certificate. When a user browses to a website that uses HTTPS, the browser checks the certificate to ensure that it is valid, signed by a CA, and matches the website’s domain name. If any of these checks fail, the browser will display a warning message that the site is not secure, and advise the user not to proceed or enter any sensitive information.

Assembly language is a low-level programming language that uses mnemonics or symbolic names to represent machine code instructions. Machine code is the binary code that is directly executed by the processor. Assembly language is the closest to machine code among the options given because it has a one-to-one correspondence with machine code instructions. Query language, scripting language, and markup language are not programming languages that are close to machine code because they use higher-level syntax or commands that need to be translated or interpreted by other programs before execution. References: CompTIA IT Fundamentals+ Study Guide: Exam FC0-U61, Second Edition, Chapter 4: Programming Concepts and Data Structures, page 139.

A compiled language is a programming language that requires its source code to be converted into machine code before it can be executed by the CPU. A compiled language uses a compiler, which is a program that translates the source code into an executable file that contains machine code. A compiled language typically runs faster and more efficiently than an interpreted language, which does not need to be compiled before execution. Java is an example of a compiled language that can run on different platforms using the Java Virtual Machine (JVM), which interprets the machine code for the specific hardware1112. References := CompTIA IT Fundamentals (ITF+) Study Guide, 2nd Edition, Chapter 4: Software Development3; What is Compiled Language? - Definition from Techopedia13