- Home
- Networking
- CCNA Wireless
91.
Which one of the following types of traffic is sent securely over a CAPWAP tunnel
by default?
- A.Control messages
- B.Client data
- C.DHCP requests
- D.802.11 beacons
- Answer & Explanation
- Report
Answer : [A]
Explanation :
Explanation :
| Only the CAPWAP control tunnel is secured by default. Client data passes over the CAPWAP data tunnel, but is optionally encrypted. DHCP requests are client data and are not encrypted by default. Finally, 802.11 beacons are sent over the air from an LAP, so they are not encrypted or transported by CAPWAP. |
92.
Which one of the following is not needed for a lightweight AP in default local mode
to be able to support three SSIDs that are bound to three VLANs?
- A.A trunk link carrying three VLANs
- B.An access link bound to a single VLAN
- C.A WLC connected to three VLANs
- D.A CAPWAP tunnel to a WLC
- Answer & Explanation
- Report
Answer : [A]
Explanation :
Explanation :
| A trunk link carrying three virtual LANs (VLANs) is not needed at all. A lightweight AP in local mode needs only an access link with a single VLAN; everything else is carried over the CAPWAP tunnel to a WLC. The WLC will need to be connected to three VLANs so that it can work with the LAP to bind them to the three service set identifiers (SSIDs). |
93.
A centralized wireless network is built with one WLC and 32 lightweight APs. Which
one of the following best describes the resulting architecture?
- A.A direct Layer 2 path from the WLC to each of the 32 LAPs, all using the same IP subnet
- B.A direct Layer 3 path from the WLC to each of the 32 LAPs, all using the same IP subnet
- C.32 CAPWAP tunnels daisy-chained between the LAPs, one CAPWAP tunnel to the WLC
- D.32 CAPWAP tunnels—one tunnel from the WLC to each LAP, with no IP subnet restrictions
- Answer & Explanation
- Report
Answer : [D]
Explanation :
Explanation :
| Because the network is built with a WLC and LAPs, CAPWAP tunnels are required. One CAPWAP tunnel connects each LAP to the WLC, for a total of 32 tunnels. CAPWAP encapsulates wireless traffic inside an additional IP header, so the tunnel packets are routable across a Layer 3 network. That means the LAPs and WLC can reside on any IP subnet as long as the subnets are reachable. There are no restrictions for the LAPs and WLC to live on the same Layer 2 VLAN or Layer 3 IP subnet. |
94.
A converged wireless network architecture has which one of the following unique
features?
- A.An access layer switch can also function as an AP.
- B.All WLCs are converged into one device.
- C.Large groups of APs connect to a single access layer switch.
- D.An access layer switch can also function as a WLC.
- Answer & Explanation
- Report
Answer : [D]
Explanation :
Explanation :
| In a converged design, an access layer switch also functions as a WLC so that all user access (wired and wireless) converges in a single layer. Catalyst 3650, 3850, and 4500 offer converged wireless capability. |
95.
Which one of the following wireless architectures usually requires the most controllers to support the same number of lightweight APs?
- A.Autonomous
- B.Cloud-based
- C.Converged
- D.Centralized
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
| A converged wireless design is based on staging a controller in some or all of the access layer switches. Therefore, the number of controllers is usually higher than in the centralized model, which has a small number of larger-capacity controllers. The autonomous and cloud-based models do not use controllers at all. |
|
|
||||||||||||||||||||||||||||
