Cryptography

Question 1

Which statement describes the Software-Optimized Encryption Algorithm (SEAL)?

Answer 1

SEAL is a stream cipher.

Question 2

Which statement is a feature of HMAC?

Answer 2

HMAC uses a secret key as input to the hash function, adding authentication to integrity assurance.

Question 3

Which requirement of secure communications is ensured by the implementation of MD5 or SHA hash generating algorithms?​

Answer 3

Integrity

Question 4

Which algorithm can ensure data confidentiality?

Answer 4

AES

Question 5

In which way does the use of HTTPS increase the security monitoring challenges within enterprise networks?

Answer 5

HTTPS traffic enables end-to-end encryption.

Question 6

Which protocol is an IETF standard that defines the PKI digital certificate format?

Answer 6

X.509

Question 7

What are two symmetric encryption algorithms?

Answer 7

3DES and AES

Question 8

What is the purpose of code signing?

Answer 8

Integrity of source .EXE files

Question 9

Which statement describes the use of certificate classes in the PKI?

Answer 9

A class 5 certificate is more trustworthy than a class 4 certificate.

Question 10

What role does an RA play in PKI?

Answer 10

A subordinate CA

Question 11

What technology supports asymmetric key encryption used in IPsec VPNs?

Answer 11

IKE

Question 12

What technology allows users to verify the identity of a website and to trust code that is downloaded from the Internet?

Answer 12

Digital Signature