Sure Pass Exam FC0-U61 PDF

802.11b is the wireless standard that supports speeds up to 11Mbps and operates on the 2.4GHz band. 802.11b is one of the earliest versions of the IEEE 802.11 family of standards for wireless local area networks (WLANs). 802.11b uses direct-sequence spread spectrum (DSSS) modulation to transmit data over radio waves. 802.11b has a maximum theoretical data rate of 11Mbps and a typical range of up to 150 feet indoors or 300 feet outdoors. 802.11b operates on the same frequency band as some cordless phones, microwaves, and Bluetooth devices, which may cause interference or signal degradation. References : The Official CompTIA IT Fundamentals (ITF+) Study Guide (FC0-U61), page 171.

A primary key is a value that uniquely identifies a database record or a row in a table. A primary key can be a single column or a combination of columns that have unique values for each record. A primary key ensures that each record can be distinguished from others and prevents duplicate data. For example, in a database that stores information about employees, the employee ID column can be used as a primary key for each employee record56. References := CompTIA IT Fundamentals (ITF+) Study Guide, 2nd Edition, Chapter 5: Database Fundamentals3; What is Primary Key? - Definition from Techopedia7

A utility interface is a type of interface that provides tools and features for managing, monitoring, and optimizing a database system. A utility interface can help users view database performance information, such as resource usage, query execution time, error logs, backup status, and optimization suggestions. A utility interface can also help users perform tasks such as backup, restore, repair, export, import, and migrate data. A utility interface is best suited for viewing database performance information, because it can provide a comprehensive and graphical overview of the database system’s health and efficiency.

Some examples of utility interfaces for databases are:

• MySQL Workbench1: A GUI tool for MySQL that provides data modeling, SQL development, server administration, backup and migration, and performance tuning features.
• Oracle Enterprise Manager: A web-based tool for Oracle that provides database management, cloud control, application performance management, and data warehouse management features.
• Microsoft SQL Server Management Studio: A GUI tool for SQL Server that provides database design, development, administration, analysis, and reporting features.

References:

• The Official CompTIA IT Fundamentals (ITF+) Student Guide (Exam FC0-U61), Chapter 5: Database Fundamentals, pages 5-15 to 5-16.
• CompTIA IT Fundamentals Certification Training, Module 5: Database Fundamentals, Lesson 3: Methods Used to Interface with Databases.
• Interfaces in DBMS

Float is a data type that can store decimal or fractional numbers, such as 3.14, 0.5, or -2.75. Float would be the best data type to use for storing monetary values because monetary values often involve decimals, such as $1.99, 0.25,or-5.50. Integer is a data type that can only store whole numbers, such as 1, 0, or -2. Integer would not be suitable for storing monetary values that have decimals. The other options are not data types that can store numerical values. References: CompTIA IT Fundamentals+ Study Guide: Exam FC0-U61, Second Edition, Chapter 4: Programming Concepts and Data Structures, page 146.