CompTIA Security+ Question J-44

The security administrator has been tasked to update all the access points to provide a more secure connection. All access points currently use WPA TKIP for encryption. Which of the following would be configured to provide more secure connections?

A. WEP
B. WPA2 CCMP
C. Disable SSID broadcast and increase power levels
D. MAC filtering

Answer: B

Explanation:
CCMP makes use of 128-bit AES encryption with a 48-bit initialization vector. This initialization vector makes cracking a bit more difficult.

CompTIA Security+ Question G-48

Which of the following can be implemented if a security administrator wants only certain devices connecting to the wireless network?

A. Disable SSID broadcast
B. Install a RADIUS server
C. Enable MAC filtering
D. Lowering power levels on the AP

Answer: C

Explanation:
MAC filtering is commonly used in wireless networks. In computer networking, MAC Filtering (or GUI filtering, or layer 2 address filtering) refers to a security access control method whereby the 48-bit address assigned to each network card is used to determine access to the network. MAC addresses are uniquely assigned to each card, so using MAC filtering on a network permits and denies network access to specific devices through the use of blacklists and whitelists. While the restriction of network access through the use of lists is straightforward, an individual person is not identified by a MAC address, rather a device only, so an authorized person will need to have a whitelist entry for each device that he or she would use to access the network.

CompTIA Security+ Question F-8

A security team has identified that the wireless signal is broadcasting into the parking lot. To reduce the risk of an attack against the wireless network from the parking lot, which of the following controls should be used? (Select TWO).

A. Antenna placement
B. Interference
C. Use WEP
D. Single Sign on
E. Disable the SSID
F. Power levels

Answer: A,F

Explanation:
Placing the antenna in the correct position is crucial. You can then adjust the power levels to exclude the parking lot.

CompTIA Network+ Question C-67

The Chief Information Officer (CIO) has noticed the corporate wireless signal is available in the parking lot. Management requests that the wireless network be changed so it is no longer accessible in public areas, without affecting the availability inside the building. Which of the following should be changed on the network?

A. Power levels
B. Overcapacity
C. Distance limitations
D. Channel overlap

Correct Answer: A

CompTIA A+ Core 2 Question J-36

A client requests a small SOHO wireless network setup. The client has only three devices that will require access to the Internet. The client is also concerned that a neighboring business will attempt to access the Internet without permission. Which of the following should the technician ensure when setting up the SOHO network? (Select TWO).

A. Enable client isolation
B. Lower radio power levels
C. Physically secure the access point
D. Disable unused ports
E. Enable MAC filtering
F. Enable short preambles

Correct Answer: BE

CompTIA A+ Core 2 Question F-11

Jane, a small business owner, would like to implement wireless networking for her business but wants to be sure the wireless is ONLY accessible from within her business premises. Which of the following would BEST accomplish this?

A. Disabling SSID broadcast to ensure that only employees know the SSID
B. Using unidirectional antennas and reducing radio power levels appropriately
C. Assigning DHCP addresses that expire after a shorter period of time
D. Using omni-directional antennas and reducing radio power levels appropriately

Correct Answer: B