Which of the following is a key component of web application security?

Question

Options

• AUsing CAPTCHA
• BUsing Transport Layer Security (TLS) for data encryption
• CAllowing unrestricted access to databases
• DDisabling firewalls

• A
  4% (1)
• B
  92% (24)
• C
  4% (1)

Explanation

Transport Layer Security (TLS) is a foundational security protocol that encrypts data in transit between a client and server, protecting sensitive information (passwords, payment data, tokens) from interception - making it a core pillar of web application security.

• A (CAPTCHA) helps prevent automated bot abuse but is a single-purpose UX control, not a broad security mechanism for protecting data or infrastructure.
• C (unrestricted database access) is the opposite of secure - it violates the principle of least privilege and directly exposes sensitive data to unauthorized users.
• D (disabling firewalls) removes a critical network boundary control, dramatically expanding the attack surface rather than reducing it.

Memory tip: Think of TLS as the "lock on the front door" of the web - without it, anyone on the network can read what's being sent. Look for HTTPS (which runs over TLS) as your signal; every modern secure web app requires it.

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