CompTIA Security+ Question K-73

A company has recently implemented a high density wireless system by having a junior technician install two new access points for every access point already deployed. Users are now reporting random wireless disconnections and slow network connectivity. Which of the following is the MOST likely cause?

A. The old APs use 802.11a
B. Users did not enter the MAC of the new APs
C. The new APs use MIMO
D. A site survey was not conducted

Answer: D

Explanation:
To test the wireless AP placement, a site survey should be performed.

CompTIA Security+ Question K-14

A retail store uses a wireless network for its employees to access inventory from anywhere in the store. Due to concerns regarding the aging wireless network, the store manager has brought in a consultant to harden the network. During the site survey, the consultant discovers that the network was using WEP encryption. Which of the following would be the BEST course of action for the consultant to recommend?

A. Replace the unidirectional antenna at the front of the store with an omni-directional antenna.
B. Change the encryption used so that the encryption protocol is CCMP-based.
C. Disable the network’s SSID and configure the router to only access store devices based on MAC addresses.
D. Increase the access point’s encryption from WEP to WPA TKIP.

Answer: B

Explanation:
CCMP is the standard encryption protocol for use with the WPA2 standard and is much more secure than the WEP protocol and TKIP protocol of WPA. CCMP provides the following security services: Data confidentiality; ensures only authorized parties can access the information Authentication; provides proof of genuineness of the user Access control in conjunction with layer management

Incorrect Options:

A: The antenna type deals with signal strength and direction. It will not have a bearing on whether technology is older.

C: This option would “cloak” the network, not harden the network.

D: WPA2, which uses CCMP as its standard encryption protocol, more secure than WPA-TKIP.

Reference: http://en.wikipedia.org/wiki/CCMP http://en.wikipedia.org/wiki/Wi-Fi_Protected_Access Stewart, James Michael, CompTIA Security+ Review Guide, Sybex, Indianapolis, 2014, pp. 61, 63

CompTIA Security+ Question F-24

After reviewing the firewall logs of her organization’s wireless APs, Ann discovers an unusually high amount of failed authentication attempts in a particular segment of the building. She remembers that a new business moved into the office space across the street. Which of the following would be the BEST option to begin addressing the issue?

A. Reduce the power level of the AP on the network segment
B. Implement MAC filtering on the AP of the affected segment
C. Perform a site survey to see what has changed on the segment
D. Change the WPA2 encryption key of the AP in the affected segment

Answer: A

Explanation:
Some access points include power level controls that allow you to reduce the amount of output provided if the signal is traveling too far.