Company ABC is hiring customer service representatives from Company XYZ. The representatives reside at Company XYZ’s headquarters. Which of the following BEST prevents Company XYZ representatives from gaining access to unauthorized Company ABC systems?

Company ABC is hiring customer service representatives from Company XYZ. The representatives reside at Company XYZ’s headquarters. Which of the following BEST prevents Company XYZ representatives from gaining access to unauthorized Company ABC systems?
A . Require each Company XYZ employee to use an IPSec connection to the required systems
B . Require Company XYZ employees to establish an encrypted VDI session to the required systems
C . Require Company ABC employees to use two-factor authentication on the required systems
D . Require a site-to-site VPN for intercompany communications

Answer: B

Explanation:

VDI stands for Virtual Desktop Infrastructure. Virtual desktop infrastructure is the practice of hosting a desktop operating system within a virtual machine (VM) running on a centralized server. Company ABC can configure virtual desktops with the required restrictions and required access to systems that the users in company XYZ require. The users in company XYZ can then log in to the virtual desktops over a secure encrypted connection and then access authorized systems only.

Incorrect Answers:

A: Requiring IPSec connections to the required systems would secure the connections to the required systems. However, it does not prevent access to unauthorized systems.

C: The question states that the representatives reside at Company XYZ’s headquarters. Therefore, they will be access Company ABC’s systems remotely. Two factor authentication requires that the user be present at the location of the system to present a smart card or for biometric authentication; two factor authentication cannot be performed remotely.

D: A site-to-site VPN will just create a secure connection between the two sites. It does not restrict access to unauthorized systems.

References:

http://searchvirtualdesktop.techtarget.com/deftnition/virtual-desktop

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