200-301 Question 250
Select 4A network administrator is configuring a wireless LAN (WLAN) on a Cisco Wireless LAN Controller (WLC) to enable client connectivity. The administrator has created a new WLAN profile and is now configuring the security settings. Which of the following options must be properly configured to ensure successful client authentication and connectivity?
- A
SSID broadcast is enabled
- B
WPA2-PSK (Pre-Shared Key) is configured with a valid passphrase
- C
The DHCP server option is disabled
- D
802.1X authentication is enabled and properly configured
- E
The WLAN interface is mapped to the correct VLAN
Show answer and explanation
Correct answers: A, B, D, E
Explanation
Successful client connectivity in a WLAN requires proper configuration of several parameters. SSID broadcast ensures clients can discover the network. Security settings such as WPA2-PSK or 802.1X authentication must be properly configured to authenticate clients. Additionally, mapping the WLAN to the correct VLAN is necessary to ensure proper routing of client traffic. While DHCP is essential for assigning IP addresses, disabling it would disrupt connectivity, making it an incorrect choice.
- A. Correct.
Enabling SSID broadcast allows clients to discover the network. While optional, it is a common configuration for most WLANs to ensure ease of connectivity.
- B. Correct.
Configuring WPA2-PSK with a valid passphrase is critical for securing client connectivity in a WLAN using personal mode security.
- C. Incorrect.
Disabling the DHCP server option would prevent clients from obtaining an IP address automatically, which would disrupt connectivity. DHCP is generally necessary for most WLAN environments.
- D. Correct.
802.1X authentication is required for enterprise-level authentication. It ensures secure client authentication in conjunction with a RADIUS server.
- E. Correct.
Mapping the WLAN to the correct VLAN ensures that client traffic is appropriately tagged and routed within the network.