CompTIA JK0-022 Exam Questions & Answers

Correct Answer: D

Correct Answer: D

The HMAC-MD5-96 (also known as HMAC-MD5) encryption technique is used by IPSec to make sure that a message has not been altered.

Incorrect Answers:

A: Blowfish can be used with IPSec but not as often as HMAC.

B: Twofish, a variant of Blowfish, can be used with IPSec but not as often as HMAC.

C: RC4 is popular with wireless and WEP/WPA encryption. IPSec can use HMAC-MD5 for data integrity.

References:

Dulaney, Emmett and Chuck Eastton, CompTIA Security+ Study Guide, Sixth Edition, Sybex, Indianapolis, 2014, pp 139, 250, 251, 255-256, 260

Correct Answer: A

Mandatory Access Control (MAC) allows access to be granted or restricted based on the rules of classification. MAC in corporate business environments involve the following four sensitivity levels Public Sensitive Private Confidential

MAC assigns subjects a clearance level and assigns objects a sensitivity label. The name of the clearance level must be the same as the name of the sensitivity label assigned to objects or resources. In this case the file is marked confidential, and the user does not have that clearance level and cannot access the file.

Incorrect Answers:

B: Discretionary access control (DAC) allows access to be granted or restricted by an object's owner based on user identity and on the discretion of the object owner, not on its clearance level.

C: Rule-based access control is used for network devices that filter traffic based on filtering rules.

D: Role-based Access Control is basically based on a user's job description.