CompTIA A+ Question I-18

Which of the following devices uses a list of MAC addresses to direct packets to the appropriate interface?

A. Switch
B. Router
C. Bridge
D. Hub

Correct Answer: A

CompTIA A+ Question H-33

A user wants to secure their home wireless network and allow only certain devices access to the network. Which of the following measures would be the MOST effective means of limiting access?

A. Turn off DHCP
B. Use MAC filtering
C. Disable DMZ
D. Turn off SSID broadcasting

Correct Answer: B

Explanation:
MAC filtering allows only certain devices to access the network. It has no specific policies or rules. The Mac addresses of devices that you want to allow can be configured in mac filtering and only those devices will access the network.

CompTIA A+ Question B-21

A SOHO environment utilizes network hardware address filtering to minimize unauthorized use of its network infrastructure. A technician has been asked to install a shared network printer in the environment. Which of the following MUST the technician know in order to add the printer to the environment?

A. IP address of the printer
B. MAC address of the printer
C. Subnet mask of the network
D. Firmware version of the printer

Correct Answer: B

CompTIA A+ Question A-49

Which of the following is the purpose of DHCP?

A. Resolves host names to IP addresses
B. Assigns MAC address hosts on a network
C. Resolves host names to MAC addresses
D. Ability to automate the IP schema to hosts

Correct Answer: D