5V0-43.21 · Question #75
What are two benefits of EC certificates over RSA certificates? (Choose two.)
The correct answer is A. ECC provides similar strength as RSA but with much smaller keys. D. Processing for ECC is less CPU-intensive than for RSA. ECC (Elliptic Curve Cryptography) offers two concrete technical advantages over RSA: equivalent security with far smaller key sizes (e.g., a 256-bit ECC key matches the strength of a 3072-bit RSA key), and lower computational overhead, meaning servers handle TLS handshakes…
Question
What are two benefits of EC certificates over RSA certificates? (Choose two.)
Options
- AECC provides similar strength as RSA but with much smaller keys.
- BThe certificates cost less money.
- CModern browsers no longer support RSA certificates.
- DProcessing for ECC is less CPU-intensive than for RSA.
- ERSA certificates cannot be used in certain countries.
How the community answered
(62 responses)- A90% (56)
- B2% (1)
- C3% (2)
- E5% (3)
Explanation
ECC (Elliptic Curve Cryptography) offers two concrete technical advantages over RSA: equivalent security with far smaller key sizes (e.g., a 256-bit ECC key matches the strength of a 3072-bit RSA key), and lower computational overhead, meaning servers handle TLS handshakes faster with less CPU load - critical at scale.
Why the distractors are wrong:
- B - Certificate cost is determined by the Certificate Authority and validation level, not the algorithm used.
- C - Modern browsers fully support RSA; it remains widely deployed and valid.
- E - Export restrictions on cryptography exist but are not specific to RSA; ECC can face similar regulatory scrutiny depending on key size and country.
Memory tip: Think "ECC = Efficient & Compact Crypto" - smaller keys (compact) and less CPU (efficient). If a benefit is about math performance or key size, ECC wins; if it sounds like a business or political claim, it's likely a distractor.
Topics
Community Discussion
No community discussion yet for this question.