CREST Network & Web Application Security

Question 1

What is the main goal of web application security?

Accepted Answer

To protect against malicious attacks targeting web applications

Answer

The main goal of web application security is to safeguard web applications from various malicious attacks, such as SQL injection, cross-site scripting (XSS), and broken authentication. These attacks can lead to data breaches, unauthorized access, or service disruption. Implementing robust security measures protects sensitive data, maintains application integrity, and ensures user trust.

Question 2

What is the function of a firewall in network security?

Accepted Answer

It filters network traffic based on security rules

Answer

A firewall acts as a security barrier between a trusted internal network and untrusted external networks, like the internet. Its primary function is to monitor and control incoming and outgoing network traffic based on a predefined set of security rules. By filtering traffic, firewalls prevent unauthorized access and protect systems from various cyber threats.

Question 3

What is SQL injection?

Accepted Answer

An attack that manipulates SQL queries to access or modify data

Answer

SQL injection is a web security vulnerability that allows an attacker to interfere with the queries an application makes to its database. By injecting malicious SQL code into input fields, an attacker can trick the database into executing unintended commands. This can lead to unauthorized access to sensitive data, modification of data, or even complete compromise of the database server.

Question 4

What is Cross-Site Scripting (XSS)?

Accepted Answer

An attack where malicious scripts are injected into web pages

Answer

Cross-Site Scripting (XSS) is a type of security vulnerability typically found in web applications. It allows attackers to inject client-side scripts, such as JavaScript, into web pages viewed by other users. When a user visits the compromised page, their browser executes the malicious script, which can then steal session cookies, deface websites, or redirect users to malicious sites.

Question 5

What is the purpose of encryption in web application security?

Accepted Answer

It protects data confidentiality by converting it into unreadable format

Answer

Encryption is a fundamental security measure in web applications that transforms data into a coded, unreadable format called ciphertext. This process ensures data confidentiality, meaning that even if unauthorized parties intercept the data, they cannot understand its content without the correct decryption key. It is crucial for protecting sensitive information like passwords, financial details, and personal data during transmission and storage.

(CREST) Council for Registered Ethical Security Testers Practice Test

(CREST) Council for Registered Ethical Security Testers Practice Test

CREST Network & Web Application Security