HTML, CSS, and JavaScript are all essential languages used in web development for structuring, styling, and adding interactivity to web pages.

HTML (HyperText Markup Language) is the standard markup language used for creating web pages and web applications.

JavaScript is a programming language used to create dynamic content on web pages.

Both the Hybrid-pi model and T-model are used as small-signal models for BJTs.

All of the options listed are special function registers in the 8051 microcontroller.

A multiplexer is a type of combinational logic circuit.

B-tree indexing is a common type of indexing used in databases to improve the speed of data retrieval.

All of the above options are types of indexing used to improve the speed of data retrieval operations in a database.

All of the above options are types of JOINs in SQL, used to combine rows from two or more tables.

FPGA (Field-Programmable Gate Array) is a type of PLD that can be programmed to perform various logic functions.

FPGA (Field Programmable Gate Array) is a type of PLD that can be programmed to perform various logic functions.

INNER JOIN, OUTER JOIN, and CROSS JOIN are all types of SQL joins used to combine rows from two or more tables.

RAM (Random Access Memory) is a type of volatile memory, meaning it loses its data when power is turned off.

De Morgan's Theorem states that NOT (A AND B) = NOT A OR NOT B.

1101 is a valid binary number as it consists only of the digits 0 and 1.

VARCHAR is a valid data type in SQL Server 2000, used for variable-length strings.

Hexadecimal numbers use digits 0-9 and letters A-F. 1A3 is valid.

The valid JDBC URL format for MySQL is 'jdbc:mysql://localhost:3306/mydb'.

76 is a valid octal number as it only contains digits 0-7.

All listed IP addresses are private IP addresses as defined by RFC 1918.

The correct SQL statement to retrieve all records from a table is 'SELECT * FROM users;'.

192.168.1.128/25 is a valid subnet, as it correctly divides the 192.168.1.0 network into two subnets, each with 128 addresses.

The valid transaction control command in SQL Server 2000 is 'BEGIN TRANSACTION'.

Git is a version control system that helps track changes in source code during software development.

An order that depends on a customer is an example of a weak entity, as it cannot exist without the customer.

OrderID is an example of an attribute in an ER model.

A multiplexer is an example of an MSI circuit as it integrates multiple logic gates to perform its function.

RAM (Random Access Memory) is volatile memory, meaning it loses its data when the power is turned off.

Using the Absorption Law, A OR (A AND B) simplifies to A.

According to the Idempotent Law, A OR A simplifies to A.