The provider tracks usage and bills based on actual consumption, which exemplifies measured service - one of the key characteristics of cloud computing - allowing monitoring, metering, and reporting of resources.

Default credentials are widely documented and frequently targeted by attackers. If administrators fail to replace them during deployment, unauthorized users may gain privileged access with little effort. Secure deployment procedures should require unique strong credentials, firmware updates, and network segmentation for IoT devices.

Web server footprinting is part of the reconnaissance phase in ethical hacking. It involves gathering detailed information about a web server's structure, external links, available directories, scripts, and technologies in use.
Techniques include:
Spidering the site to map all accessible URLs and file paths
Identifying hidden directories or backup files
Analyzing page structures and URL patterns
This information helps attackers identify areas to target for further scanning or exploitation.
Incorrect Options:
A). Vulnerability scanning is active testing, not passive footprinting.
C). System-level data is gathered in OS or network footprinting.
D). Brute-force attacks are exploitation techniques, not reconnaissance.
Reference - CEH v13 Official Courseware:
Module 02: Footprinting and Reconnaissance
Section: "Web Server Footprinting Techniques"
Tool Reference: HTTrack, Burp Spider, OWASP ZAP
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This is a classic example of Web Parameter Tampering. This occurs when attackers manipulate parameters exchanged between client and server to exploit vulnerabilities in the application logic. In this case:
Damount and Camount are passed via URL parameters.
The web application is not validating or sanitizing the values.
Altering the values affects the transaction outcome.
This is not an SQL Injection (no SQL code shown), nor is it XSS (no script injection), and it is unrelated to Cookie Tampering (which involves browser-stored cookies).
Reference: CEH v13 eCourseware - Module 14: Hacking Web Applications # "Parameter Tampering" CEH v13 Study Guide - Web Application Attacks # "Client-side Parameter Tampering"