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Lpi Linux Professional Institute Web Development Essentials Exam 030 Sample Questions:

1. Which of the following is a best practice to prevent SQL injection in NodeJS?

A) Storing database credentials in the code
B) Using regular expressions to sanitize input
C) Concatenating user inputs directly into SQL queries
D) Employing prepared statements or parameterized queries

2. Which of these statements about SQL is true? (Choose two)

A) SQL is case-sensitive when it comes to commands and table names.
B) SQL can query a database and retrieve information stored in it.
C) SQL is a programming language primarily used for creating websites.
D) SQL can insert, update, or delete records in a database.

3. What is a primary key in an SQL database?

A) The main field used for joining tables
B) A password to access the database
C) A unique identifier for each row in a table
D) The highest value in a table

4. Which HTTP status codes indicate success and client error? (Choose two)

A) 302
B) 404
C) 200
D) 500

5. Which of the following are common web development technologies and standards? (Choose two)

A) JavaScript
B) HTML/CSS
C) Bluetooth communication
D) PCIe interface

Solutions: