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NEW QUESTION # 301
A database administrator created a database and identified an internal reference field that does not allow duplicate values. Which of the following did the administrator create?
Answer: D
Explanation:
A primary key is a unique field in a database table that does not allow duplicate values, ensuring each record can be uniquely identified.
NEW QUESTION # 302
A technician needs to install input devices while setting up a new desktop PC. Which of the following should the technician install? (Choose two.)
Answer: A,D
Explanation:
Input devices allow users to interact with the computer by sending data to it. The most common input devices for a desktop PC setup are:
Mouse - allows the user to point, click, and interact with the GUI.
Keyboard - used to enter text and commands.
"Input devices such as the keyboard and mouse are essential for entering data into a computer." - CompTIA ITF+ Study Guide Other options explained:
A . Printer - Output device
D . CPU - Core processing unit, not an input device
E . Speaker - Output device
F . SSD - Storage device
Correct answers: B and C
NEW QUESTION # 303
A programmer designs an application to record user actions in a log file for proper tracking. Which of the following best describes the recording component of the application?
Answer: D
Explanation:
Accounting involves recording user actions and system events, such as logging activity in a file for tracking and auditing purposes.
Other options:
*Authentication confirms identity,
*Authorization grants access rights,
*Non-repudiation ensures a user cannot deny having performed an action, often involving digital signatures or audit trails beyond simple logging.
NEW QUESTION # 304
Which of the following is reset when a workstation is turned off?
Answer: D
Explanation:
RAM (Random Access Memory) is volatile memory, meaning its contents are erased when power is removed.
According to the CompTIA ITF+ FC0-U71 Official Study Guide:
* "RAM is volatile storage, which means that it requires constant power to maintain the stored information. When power is turned off, all data in RAM is lost."
* BIOS (firmware), NIC (hardware interface), and CPU (hardware processor) remain unaffected by shutdowns regarding stored information.
Reference: CompTIA ITF+ FC0-U71 Official Study Guide, Chapter 3 - Computing Components.
NEW QUESTION # 305
Given the following table:
Which of the following fields best represents a primary key?
Answer: E
Explanation:
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 answer: 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.
NEW QUESTION # 306
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