Cisco CCNA WLAN Architectures and Concepts 4

Question 1

Which 802.11 frame type includes subtypes such as Beacon, Probe Request, Association Request, and Authentication?

Accepted Answer

Management frames

Answer

Management frames handle the setup and maintenance of wireless connections, including network discovery, authentication, and association.

Question 2

A client roams from AP1 to AP2, both managed by the same WLC. Which type of roaming occurs?

Accepted Answer

Intra-controller roaming where the WLC updates client mapping internally

Answer

When both APs are on the same WLC, intra-controller roaming occurs and the WLC simply updates its internal client-to-AP mapping without requiring full re-authentication.

Question 3

What does the term 'cell overlap' mean in wireless LAN design, and why is it recommended?

Accepted Answer

A 15-20% overlap between AP coverage areas to ensure seamless client roaming

Answer

A 15-20% coverage cell overlap between adjacent APs ensures clients can begin associating with the next AP before losing signal from the current one, enabling seamless roaming.

Question 4

Which statement about 802.11ac (Wi-Fi 5) is accurate?

Accepted Answer

It operates exclusively in the 5 GHz band and supports channel widths up to 160 MHz

Answer

802.11ac operates only in the 5 GHz band and supports channel bonding up to 160 MHz, along with MU-MIMO for improved multi-client performance.

Question 5

In Cisco WLC terminology, what is a 'dynamic interface' used for?

Accepted Answer

Mapping a WLAN/SSID to a specific VLAN on the wired network

Answer

Dynamic interfaces on a WLC map specific WLANs (SSIDs) to VLANs on the wired network, allowing traffic segmentation for different wireless networks.

Cisco CCNA Practice Test

Cisco CCNA Practice Test

Cisco CCNA WLAN Architectures and Concepts 4