CCDA FAQ: Wireless LAN Design

CCDA FAQ: Wireless LAN Design

Q1. What technology provides 54 Mbps of bandwidth using UNII frequencies?
a. IEEE 802.11b
b. IEEE 802.11g
c. IEEE 802.11a
d. IEEE 802.11n
e. Both C and D

Q2. What frequency allotment provides 11 channels for unlicensed use for WLANs in North America?
a. UNII
b. ISM
c. Bluetooth
d. FM

Q3. What standard is used for control messaging between access points and controllers?
a. IEEE 802.11
b. CSMA/CA
c. IEEE 802.1X
d. CAPWAP

Q4. Which WLAN controller interface is used for out-of-band management?
a. Management interface
b. Service-port interface
c. AP manager interface
d. Virtual interface

Q5. How many access points are supported by a Cisco Catalyst 3750 with an integrated controller?
a. 6
b. 50
c. 100
d. 300

Q6. Which WLAN controller redundancy scheme uses a backup WLC configured as the tertiary WLC in the APs?
a. N+1
b. N+N
c. N+N+1
d. N+N+B

Q7. What is the recommended maximum number of data devices associated to a WLAN?
a. 8
b. 20
c. 50
d. 100

Q8. Which device of Cisco’s Wireless Mesh Networking communicates with the rooftop
AP (RAP)?
a. WLC
b. WCS
c. RAP
d. MAP

Q9. What is the maximum data rate of IEEE 802.11g?

Q10. What is the typical data rate of IEEE 802.11n?

Q11. What are some difficulties with having to manage hundreds of standalone APs?

Q12. What standard does IEEE 802.11i use for confidentiality, integrity, and authentication?

Q13. List at least four benefits of Cisco UWN.

Q14. True or false: With split-MAC, the control and data frames are load-balanced between the LWAP and the WLC.

Q15. True or false: With split-MAC, the WLC, not the LWAP, is responsible for authentication and key management.

Q16. What CAPWAP transport mode is the preferred and most scalable?
a. Intra
b. Layer 2
c. Layer 3
d. EoIP

Q17. What is the preferred intercontroller roaming option?
a. Intra
b. Layer 2
c. Layer 3
d. EoIP

Q18. What device places user traffic on the appropriate VLAN?
a. Lightweight AP
b. WLAN controller
c. MAP
d. RAP

Q19. How many access points are supported in a mobility group using Cisco 4400 series WLCs?
a. 144
b. 1200
c. 2400
d. 7200

Q20. What is the recommended number of data devices an AP can support for best performance?
a. About 6
b. 7 to 8
c. 10 to 15
d. About 20

Q21. What is the recommended number of VoWLAN devices an AP can support for best performance?
a. 2 to 3
b. 7 to 8
c. 10 to 15
d. About 20

Q22. What method is used to manage radio frequency channels and power configuration?
a. WLC
b. WCS
c. RRM
d. MAP

Q23. What is the typical latency per wireless mesh hop in milliseconds?
a. 1 to 3
b. 7 to 8
c. 10 to 15
d. About 20

Q24. What is the recommended maximum RTT between an AP and the WLC?
a. 20 ms
b. 50 ms
c. 100 ms
d. 300 ms

Q25. What is the recommended controller redundancy technique?
a. N+1+N
b. Static
c. Dynamic
d. Deterministic

Q26. What is the recommended best practice for guest services?
a. Use separate VLANs.
b. Use separate routers and access lists.
c. Obtain a DSL connection and bridge to the local LAN.
d. Use EoIP to isolate traffic to the DMZ.

Q27. What is the recommended best practice for branch WLANs?
a. Use H-REAP with centralized controllers.
b. Use local-MAP.
c. Use wireless mesh design.
d. Use EoIP.

Q28. What are two recommended best practices for WLC design?
a. Maximize intercontroller roaming.
b. Minimize intercontroller roaming.
c. Use distributed controller placement.
d. Use centralized controller placement.

Q29. How many APs does the Cisco 6500 WLC module support?
a. 6
b. 50
c. 100
d. 300

Q30. Match each access point mode with its description:
i. Local
ii. REAP
iii. Monitor
iv. Rogue detector
v. Sniffer
vi. Bridge
a. For location-based services
b. Captures packets
c. For point-to-point connections
d. Default mode
e. Management across the WAN
f. Monitors rouge APs

Q31. Match each WLC interface type with its description.
i. Management
ii. Service port
iii. AP manager
iv. Dynamic
v. Virtual
a. Authentication and mobility
b. Analogous to user VLANs
c. Discovery and association
d. Out-of-band management
e. In-band management

Q32. Match each roaming technique with its client database entry change.
i. Intracluster roaming
ii. Layer 2 intercluster roaming
iii. Layer 3 intercluster roaming
a. The client entry is moved to a new WLC.
b. The client entry is updated on the same WLC.
c. The client entry is copied to a new WLC.

Q33. Match each UDP port with its protocol.
i. LWAPP data
ii. RF group 802.11b/g
iii. WLC encrypted exchange
iv. LWAPP control
v. WLC unencrypted exchange
vi. CAPWAP control
vii. CAPWAP data
a. UDP 12114
b. UDP 12222
c. UDP 5246
d. UDP 5247
e. UDP 12223
f. UDP 16666
g. UDP 16667

Q34. Match each wireless mesh component with its description.
i. WCS
ii. WLC
iii. RAP
iv. MAP
a. Root of the mesh network
b. Remote APs
c. Networkwide configuration and management
d. Links APs to the wired network

Q35. How many MAP nodes are recommended per rooftop AP?
a. 6
b. 20
c. 500
d. 100

Q36. Which of the following shows the correct order of the steps in an RF site survey?
a. Define requirements, document findings, perform the survey, determine preliminary AP locations, identify coverage areas.
b. Define requirements, perform the survey, determine preliminary AP locations, identify coverage areas, document findings.
c. Identify coverage areas, define requirements, determine preliminary AP locations, perform the survey, document findings.
d. Define requirements, identify coverage areas, determine preliminary AP locations, perform the survey, document findings.

Q37. What technique performs dynamic channel assignment, power control, and interference detection and avoidance?
a. CAPWAP
b. RRM
c. Mobility
d. LEAP

Q38. Which of the following statements is true?
a. IEEE 802.11g is backward compatible with 802.11b; 802.11a is not compatible with 802.11b.
b. IEEE 802.11a is backward compatible with 802.11b; 802.11g is not compatible with 802.11b.
c. IEEE 802.11b is backward compatible with 802.11a; 802.11g is not compatible with 802.11b.
d. IEEE 802.11n is backward compatible with 802.11a and 802.11g.

Q39. What is necessary when you use H-LEAP for authentication?
a. WLC
b. WCS
c. RADIUS server
d. LWAP

Q40. A LWAP is added to a network. What sequence accurately reflects the process it will use to associate with the WLAN controller?
a. First master, secondary, tertiary, greatest AP capacity
b. Primary, secondary, tertiary, greatest AP capacity, master
c. Primary, secondary, tertiary, master, greatest AP capacity
d. Greatest AP capacity, primary, secondary, master

Q41. An LWAP is added to a network that is in a separate IP subnet from the WLAN controller. OTAP has not been enabled. Which two methods can be used by the LWAP to find the WLAN controller?
a. DHCP
b. Primary, secondary, tertiary, greatest AP capacity, master
c. Primary, secondary, tertiary, master, greatest AP capacity
d. Greatest AP capacity, primary, secondary, master
e. DNS
f. Local subnet broadcast

Q42. Which two of the following statements represent a preferred Wireless LWAPP implementation? (Select two.)
a. Use of Layer 2 LWAPP is preferred over Layer 3 LWAPP.
b. Use of Layer 3 LWAPP is preferred over Layer 2 LWAPP.
c. Open ports for Layer 2 LWAPP on EtherType 0xABAB and Layer 3 on TCP 12222 and TCP 12223.
d. Open ports on Layer 2 LWAPP on EtherType 0xBBBB and Layer 3 on UDP 12222 and UDP 12223.
e. Open ports on Layer 2 LWAPP on EtherType 0xBABA and Layer 3 on UDP 12222 and TCP 12223.

Q43. Which two of the following statements represent a preferred split-MAC LWAPP implementation? (Select two.)
a. IEEE 802.1Q trunking extends from the wired infrastructure to a WLAN controller. Then the 802.1Q packet is encapsulated in CAPWAP or LWAPP and sent to the access point for transmission over the SSID.
b. Each wireless client authentication type maps to a unique SSID, which in turn maps to a common shared VLAN.
c. 802.1Q trunking extends from the wired infrastructure to the access point for translation into SSIDs.
d. Each wireless client authentication type maps to a unique SSID, which in turn maps to a unique VLAN.
e. 802.1Q trunking extends from the wired infrastructure to a WLAN controller for translation into SSIDs.

Q44. Which two of these are required for Cisco wireless client mobility deployment?
a. Matching security
b. Matching mobility group name
c. Matching RF channel
d. Matching RF group name
e. Matching RF power
f. Assigned master controller

Q45. Which describe best practice for Cisco outdoor wireless mesh networks? (Select three.)
a. RAP implemented with 20 or fewer MAP nodes
b. RAP implemented with 20 to 32 MAP nodes
c. Mesh hop counts of 4 or fewer
d. Mesh hop counts of 8 to 4
e. Client access via 802.11b/g and backhaul with 802.11a
f. Client access via 802.11a and backhaul with 802.11b/g

Q46. Which describe best practices for Cisco WLAN guest access? (Select two.)
a. Guest tunnels have limitations on which wireless controllers can originate the tunnel.
b. Guest tunnels have limitations on which wireless controllers can terminate the tunnel.
c. Dedicated guest VLANs are only extended to the wireless controllers in the network to ensure path isolation.
d. Dedicated guest VLANs are extended throughout the network to the access points for path isolation.
e. Dedicated guest access in the DMZ extends from the origination to the termination controllers without dedicated guest VLANs.
f. Guest tunnels can originate and terminate on any wireless controller platform.

Q47. How are WLANs identified?
a. MAC addresses
b. IP subnet
c. SSID
d. WEP key
e. LAN ports
f. Secure encryption key

Q48. Which description is correct regarding Wireless solutions that provide higher bandwidth than point-to-multipoint (p2mp) wireless?
a. p2p links tend to be slower than p2mp.
b. p2mp wireless connections can provide up to 1.544-Mbps raw bandwidth.
c. p2p wireless connections can provide up to 44-Mbps raw bandwidth.
d. P2mp links tend to be faster than p2mp.

Q49. Which WLAN attributes should be considered during a site survey? (Select two.)
a. Channels
b. Power
c. SSID
d. Network name
e. Authentication
f. Encryption

Q50. Which WLC interfaces are mandatory? (Select all that apply.)
a. Management
b. AP manager
c. Dynamic
d. Virtual
e. Service port
f. Extended

Q51. Which are differences between CAPWAP and LWAPP? (Select three.)
a. CAPWAP uses the newer AES. LWAPP uses DTLS.
b. CAPWAP uses DTLS. LWAPP uses AES.
c. CAPWAP control uses UDP 5246. LWAPP control uses UDP 12223.
d. CAPWAP control uses UDP 12223. LWAPP control uses UDP 5246.
e. CAPWAP is preferred.
f. LWAPP is preferred.

Q52. Which two of these functions of an access point in a split MAC architecture? (choose two)
a. 802.1Q encapsulation
b. EAP authentication
c. MAC layer encryption/decryption
d. Process probe response

Q53. What are the three nonoverlapping channels of IEEE 802.11b/g?
a. Channels A, D, and G
b. Channels 1, 6, and 11
c. Channels 3, 8, and 11
d. Channels A, E, and G