FC0-U71 Exam Questions & Answers

A primary key is a unique identifier for each record in a database table. It must be unique and not null across all rows. In this table, the field ID is the only column that uniquely identifies each row and does not repeat.

''A primary key is a field (or a set of fields) that uniquely identifies a record in a table. It ensures that each record can be uniquely retrieved.'' --- CompTIA ITF+ Official Study Guide

Analysis of other options:

Month, Day, Year, and Name can have duplicate values across multiple records and therefore do not serve as unique identifiers.

Correct answe r: A

The ID field contains unique values for each record and is typically used as a primary key in a database. A primary key uniquely identifies each row in a table.

Month, Day, Year, and Name may have duplicates and do not guarantee uniqueness.

The correct answer is B. Document the findings. In the troubleshooting methodology, after the issue has been resolved and functionality has been verified, the final step is to document the findings, lessons learned, actions, and outcomes. Testing the theory, creating an action plan, and implementing the action plan all happen before the problem is resolved.

Exact Extract/Reference: The CompTIA Tech+ Study Guide lists the troubleshooting steps in order: identify the problem, establish a theory, test the theory, establish a plan and implement the solution, verify full system functionality, and finally ''Document findings/lessons learned, actions, and outcomes.''

Data monetization refers to generating revenue from data assets, such as selling access or insights from collected user data to third parties.

''Data monetization involves using data to generate economic value --- for example, selling user data to vendors or advertisers.'' --- CompTIA ITF+ Data Concepts

Correct answe r: A

The CompTIA Tech+ Study Guide clearly defines:

''To talk to the hardware, operating systems use specialized programs called device drivers, or drivers for short. A driver tells the OS how to talk to the specific piece of hardware and how to use its features. If there is no driver for that OS, then the hardware will not be compatible with it.''

Hence, drivers are the software components that control and enable communication between the OS and hardware devices.

Verified Reference:

Chapter 4: Operating Systems --- ''Coordinating Users and Hardware'' (pp. 208--209).

A VPN (Virtual Private Network) creates a secure, encrypted connection over the internet between the user and a remote network, enabling secure access from home or public networks.

''VPNs provide a secure tunnel for transmitting data over unsecured networks, such as the internet, by encrypting all traffic between the client and the network.'' --- CompTIA ITF+ Security Topics

Other options:

A . LAN -- Local and not for remote use

B . FTP -- Transfers files but lacks modern encryption

C . DNS -- Resolves domain names, not for access

Correct answe r: D