Cisco 400-351 Online Practice Questions and Exam Preparation

Cisco 400-351 Online Questions & Answers

• Question 451:

  Which two characteristics of 802.11ac Wawe2 MU-MIMO are true? (Choose two.)

  A. MU-MIMO operates in the downstream direction, access point to client.
  B. MU-MIMO operates in the upstream direction, client to access point.
  C. MU-MIMO operates in the upstream and downstream directions.
  D. MU-MIMO is backward compatible with 802.11ac Wave 1.
  E. MU-MIMO allows an access point to transmit to multiple client devices simultaneously.
  A. MU-MIMO operates in the downstream direction, access point to client.
  E. MU-MIMO allows an access point to transmit to multiple client devices simultaneously.

• Question 452:

  Which ArieOS release is the first to support New Mobility on the 2504 WLC ?

  A. 7.4.x
  B. 7.6.x
  C. 8.0.x
  D. 8.1.x
  B. 7.6.x

• Question 453:

  While implementing multicast in wireless environment based on autonomous access points, you want to ensure that multicast traffic is not dropped during the client roaming. Which functionality on the access point is used to address this issue?

  A. The access point automatically sends IGMP join requests to all discovered multicast groups and forwards all mutlicast traffic to the wireless LAN.
  B. The access point uses IGMP snooping functionality, by examining (snooping) IGMP membership report messages from associated clients, and keeps a local database of associated clients and multicast groups.
  C. The access point uses IGMP proxy functionality to sens IGMP join requests on behalf of the associated clients.
  D. The access point uses IGMP snooping helper to send a general query to the wireless LAN, which prompts the client to send an IGMP membership report.
  A. The access point automatically sends IGMP join requests to all discovered multicast groups and forwards all mutlicast traffic to the wireless LAN.

• Question 454:

  You are deploying a Cisco OfficeExtend Access Point 1810 for home office needs. Which two statements for OEAP 1810 deployment are true? (Choose two.)

  A. Personal SSID configuration is not supported for local home networking on OfficeExtend mode
  B. A total of eight (WLAN + RLAN) is supported on AIR-OEAP1810. Once can have more than eight (WLAN + RLAN) associated on the AP group, but only the first eight (WLAN + RLAN) are usable
  C. Ethernet Ports-AIR-OEAP1810 supports Cisco Discovery Protocol or LLDP on Ethernet ports
  D. MAC filtering is not a supported authentication/security method
  E. PoE Uplink-AIR-OEAP1810 does not support Cisco Discovery Protocol it supports LLDP on the uplink PoE port for power negotiation.
  A. Personal SSID configuration is not supported for local home networking on OfficeExtend mode
  C. Ethernet Ports-AIR-OEAP1810 supports Cisco Discovery Protocol or LLDP on Ethernet ports

• Question 455:

  You are setting up a Cisco access point in repeater mode with a non-Cisco point as the parent and you use this interface configuration on your Cisco access point.

  interface Dot11Radio0 no ip address no ip route-cache no ip route-cache ! ssid my WIFInetwork ! station-role repeater bridge-group 1 subscriber-loop-control bridge-group 1 block-unknown-source no bridge-group 1 source-learning no bridge-group 1 unicast-flooding bridge-group 1 spanning-disabled

  You are getting the following error message. Which reason for this issue is true? %DOT11-4-CANT_ASSOC: Interface Dot11Radio0, cannot associate. NO aironet Extension IE

  A. "dot11 extension " is missing under the interface Dot11Radio 0 interface.
  B. When repeater mode is used, unicast-flooding must be enabled to allow Aironet IE communications.
  C. The parent AP MAC address has not been defined.
  D. Repeater mode only works between Cisco access point.
  D. Repeater mode only works between Cisco access point.

• Question 456:

  

  Refer to the exhibit. Which feature (and associated show output) is seen here?

  A. Controller>show client tsm 802.11a 00:01:02:03:04:05 all
  B. Controller>show client wmm 802.11a 00:01:02:03:04:05 all
  C. Controller>show ap stats 802.11a00:01:02:03:04:05
  D. Controller>show client detail 00:01:02:03:04:05
  A. Controller>show client tsm 802.11a 00:01:02:03:04:05 all

• Question 457:

  You are troubleshooting a voice over wireless problem and you notice that the voice quality is very poor. You take a wireless sniffer trace and you see that is marked as best effort. What is the correct user priority and respective DSCP values for voice packets?

  A. 4, AF31
  B. 5, EF46
  C. 6, AF31
  D. 6, EF46
  B. 5, EF46

• Question 458:

  Refer to the exhibit. A network administrator is troubleshooting a wireless client connection problem on an autonomous deployment. The SSID is configured to use dot1X methods.

  Which statement is true?

  

  A. The client has passed open authentication, but is has not yet passed the dot1X authentication phase.
  B. The client has passed open authentication and dot1X authentication. The four-way handshake is the next step in the process.
  C. The client has passed open authentication, dot1X authentication, and the four-way handshake.
  D. The client has no open authentication and has passed the dot1X authentication process. Only the GTK must be processed now.
  B. The client has passed open authentication and dot1X authentication. The four-way handshake is the next step in the process.

• Question 459:

  Which WLAN organization and regulation promotes and tests for WLAN interoperability?

  A. FCC
  B. ETSI
  C. ITU-R
  D. Wi-Fi Alliance
  A. FCC

• Question 460:

  If a guest anchor controller is used outside the firewall. Which firewall ports must you open for guest access including SNMP and mobility failover features to work in a Cisco Unified Wireless Network?

  A. UDP 16666. IP protocol 90. UDP 162 163
  B. UDP 16667. IP protocol 97. UDP 500 501
  C. UDP 16666. IP protocol 97. UDP 161 162
  D. UDP 12223. IP protocol 97. UDP 161 162
  E. UDP 12222. IP protocol 90. UDP 161 162
  C. UDP 16666. IP protocol 97. UDP 161 162