C839 - Pre-Assessment| 60 QUESTIONS| WITH COMPLETE SOLUTIONS

Which encryption standard uses the same key to encrypt and decrypt messages? A) Asymmetric Key Encryption B) Symmetric Key Encryption C) Public Certificate D) CRL CORRECT ANSWERS: Symmetric Key Encryption Which algorithm is designated as a Type 2 product by the National Security Agency (NSA)? A) DES B) AES C) SKIPJACK D) WEP CORRECT ANSWERS: SKIPJACK What is the most commonly used format for certificates? A) X.509 v3 B) X.509 v2 C) X.509 v1 D) DES CORRECT ANSWERS: X.509 v3 *Version 3* What is referenced to determine if a certificate has been revoked? A) Certificate Revocation List B) Certificate Revocation Authority C) Certificate Approver D) Revocation List CORRECT ANSWERS: Certificate Revocation List What needs to be installed on *end users' computers* to allow them to *trust* applications that have been *digitally signed* by the developer? A) Sender's public key B) Sender's private key C) Receiver's public key D) Receiver's private key CORRECT ANSWERS: Sender's public key *(DEVELOPER's)* Which type of certificate *must be certified by an authority* to verify it with other participants? A) Public Certificate B) Private Certificate C) Certificate Provider D) Revocation Authority CORRECT ANSWERS: Public Certificate