Explanation

Concurrency control manages simultaneous access to data in a database to prevent conflicts or data inconsistency.

It ensures data integrity when multiple users perform read/write operations at the same time.

Explanation

Dot pitch refers to the distance between pixels on a monitor, affecting pixel density per inch.

It influences the sharpness and clarity of the display image.

Explanation

An Alternate key is any candidate key not chosen as the primary key.

It can still uniquely identify records, but isn't used as the main identifier.

Explanation

Unshielded Twisted Pair (UTP) cable, especially Cat5 or Cat5e, supports data transmission speeds up to 100 Mbps or more.

It is widely used in buildings for Ethernet networks due to its cost-effectiveness and reliability.

Explanation

Forms in MS Access provide a user-friendly interface for easy data entry and editing in tables.

They simplify interacting with table data without directly working in the table view.

Explanation

In batch processing systems, all tasks are executed without user interaction, so incorrect or undesired commands may run unnoticed.

This can lead to errors or wasted resources, making it a key drawback of the system.

Explanation

FM is not easily affected by amplitude variations caused by thunderstorms, making it more resistant to noise.

In contrast, Amplitude Modulation (AM) is highly susceptible to static and noise from electrical storms.

Explanation

There are 7 basic logic gates:

1. AND
2. OR
3. NOT
4. NAND
5. NOR
6. XOR
7. XNOR

These gates form the foundation of digital electronics and computing.

Explanation

#define PI 3.14

This is the correct syntax for defining a constant using the C preprocessor directive.

It replaces every instance of PI with 3.14 before compilation begins.

Explanation

Integer data type stores whole numbers without decimals, ideal for values like 67, 100, etc.

It supports a range that easily includes numbers greater than 66.000 and doesn’t require decimal precision like float.