D. To block unauthorized access while permitting authorized communications
Answer: Option D
Solution (By JKSSB Mock Tests)
A network firewall controls incoming and outgoing network traffic based on security rules, allowing authorized traffic and blocking unauthorized access.
What class of hacker operates without malicious intent but may cross legal boundaries to access systems without permission, later disclosing the security flaws to owners or demanding a remediation fee?
Explanation:
Grey hat hackers inhabit an ethical middle ground; they compromise system boundaries without authorization but generally lack malicious intent, aiming instead to report or expose systemic bugs.
Which malicious software type is explicitly engineered to silently monitor user inputs, record keystrokes, and track browsing histories to steal passwords covertly?
Explanation:
Keyloggers are specialized spyware tools that log physical keyboard strokes, capturing sensitive authentication metrics before they are encrypted.
Which security standard forces a system to demand multiple independent proofs of identity—such as a password mixed with an instant mobile token—before permitting user access?
Explanation:
MFA combines validation factors from distinct categories: something you know (password), something you have (token/device), or something you are (biometrics).
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