Which of the following vulnerabilities involves hackers manipulating backend query inputs within web forms to gain unauthorized access to underlying corporate databases? MCQ with Answer and Explanation

Question
Which of the following vulnerabilities involves hackers manipulating backend query inputs within web forms to gain unauthorized access to underlying corporate databases?
A. Cross-Site Scripting (XSS)
B. SQL Injection (SQLi)
C. Denial of Service (DoS)
D. Phishing Redirect
Answer: Option B
Solution (By JKSSB Mock Tests)
SQL Injection occurs when malicious SQL statements are inserted into entry fields for execution, letting attackers manipulate database systems behind a website.
This question belongs to: Computer Internet and Web Technologies
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Question #1
What is the purpose of the 'Session' in web applications?
A. To manage database connections
B. To store static files
C. To handle form submissions
D. To maintain state across multiple requests from the same user
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Correct Answer: Option D

Explanation:
A session is a server-side storage that persists user-specific data (like login status) across requests, using cookies or URL rewriting.
This question belongs to: Computer Internet and Web Technologies
Question #2
Which of the following provides an accurate definition of the internet term 'Spam'?
A. A malicious virus file targeting browser cache folders directly
B. Unsolicited bulk messages sent indiscriminately to large numbers of recipients
C. Highly structural encrypted email backups stored on internal networks
D. A digital protocol built to speed up file uploads
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Correct Answer: Option B

Explanation:
Spam refers specifically to unsolicited, unwanted digital messages (frequently commercial advertisements) distributed in massive quantities via email.
This question belongs to: Computer Internet and Web Technologies
Question #3
What is the function of the 'User-Agent' string sent inside an HTTP request header to a remote web server?
A. To identify the specific browser application, version, and operating system of the client to the server
B. To transmit the user's encrypted master system password
C. To specify the physical routing coordinates of the local ISP link
D. To check local hardware device temperature metrics
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Correct Answer: Option A

Explanation:
The User-Agent header string acts as a technical badge, telling the web server what browser software and operating system the client is using so it can tailor content compatibility.
This question belongs to: Computer Internet and Web Technologies
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