WGU C839 Exam Questions and Answers
2023 – 2024 (Verified Answers)
1.Which encryption standard uses the same key to encrypt and
decrypt messages ANS Symmetric
2.Which algorithm is designated as a Type 2 product by the National
Security Agency (NSA) ANS Skipjack
3.What is the most commonly used format for certificates ANS X.509 v3
4.What is referenced to determine if a certificate has been revoked ANS
Certifi- cate revocation list (CRL)
5.What needs to be installed on end users’ computers to allow them to
trust applications that have been digitally signed by the developer ANS
Sender’s public key
6.Which type of certificate must be certified by an authority to verify it
with other participants ANS Public
7.What is an attribute of the Rivest Cipher 4 (RC4) algorithm ANS It
requires a unique nonce.
8.Which mode generates the key stream with a nonce and
incrementing value ANS Counter (CTR)
9.Which mode is a stream algorithm that concatenates an
incrementing value with a nonce ANS Counter (CTR)
10.Which key would an administrator use to encrypt data so only the
CEO can decrypt it ANS CEO’s public key
11.What is the result of a hash function ANS Digest
12.What is used to efficiently encrypt large files ANS Symmetric
encryption