Questions for the 400-351 were updated on : Dec 01 ,2025
Page 1 out of 29. Viewing questions 1-15 out of 434
Question 1
Which three common network transport ingredients for hybrid and multicloud networking are true? (Choose three.)
A. encryption
B. management
C. encapsulation
D. routing
E. tunneling
F. switching
Answer:
A, C, E
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Question 2
Which three policies are building blocks of vSmart policies architecture? (Choose three.)
A. data policy
B. service policy
C. control policy
D. application aware policy
E. site policy
F. bandwidth policy
Answer:
A, C,D
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Question 3
Which two data formats correctly describe the purpose of YANG data models in relation to NETCONF and RESTCONF? (Choose two.)
A. YANG data models are used to generate JSON data for RESTCONF
B. YANG data models are used to generate XML data for NETCONF
C. YANG data models are used to generate YAML data for NETCONF
D. YANG data models are used to generate CSV data for RESTCONF
E. YANG data models are used to generate HTML data for RESTCONF
Answer:
A, B
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Question 4
You are setting up a virtual wireless. LAN controller and you join the Aps to the WLC. However, upon testing, you realize that none of the SSIDs configured are visible. You check and verify that: The Aps have joined. The SSIDs are enabled. The APs are enabled. The radios are also enabled. Based on the above output, which reason for this issue is true?
A. The EULA has not been accepted in the WLC.
B. AP model 3700 is not supported by the virtual WLC.
C. The SSIDs might be configured to not broadcast.
D. The mode of the AP is set to local.
Answer:
B
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Question 5
Which statement is true for Cisco Virtual Wireless LAN Controllers?
A. Simplified controller provisioning using a web browser is not supported on the vWLC.
B. The vWLC service port can be used to enable the feature of Simplified initial for day 0 controller provisioning setup) for Cisco WLCs.
C. After using the simplified setup, you must manually configure bets practices for the controller.
D. The vWLC supports up to 10 physical ports; one for service port and the others for management/dynamic interfaces.
Answer:
B
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Question 6
Which meaning of this error message is true? VoIP Call Failure: ‘xx:xx:xx:xx:xx:xx’ client, detected by ‘LAP’ AP on radio type ‘802.11b/g’. Reason: ‘Call failed: TSPEC QOS Policy does not match’
A. Channel utilization on the AP is high and load-based CAC is enabled.
B. Roaming bandwidth is depleted and the client gets a network busy message.
C. Traffic SPECification request from the handset is refused due to QoS policy mismatch between the handset and CallManager.
D. Traffic SPECification request from the handset is refused due to wrong QoS configuration on the WLAN.
Answer:
D
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Question 7
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 issued to address this issue?
A. The access point automatically sends IGMP join requests to all discovered multicast groups and forwards all multicast 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.
Answer:
A
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Question 8
DRAG DROP Drag and drop the RF behavior from the left onto its correct definition on the right. Select and Place:
Answer:
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Question 9
Which statement about NTP on a Cisco Wireless LAN Controller is true?
A. If your wIPS deployment consists of Cisco APs, WLC, and MSE, you must set all the three entities to the UTC time zone.
B. You cannot configure an authentication channel between the WLC and the NTP server.
C. You can enter an IPv4 or an IPv6 address when configuring the NTP/SNTP server but, you cannot use the fully qualified domain name (FQDN) of the server.
D. Wrong date and time on the WLC has no effect to the AP joining process
Answer:
C
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Question 10
Your manager wants a quick view of the wireless network to include in one of his presentations to the upper management. Which Cisco Prime Infrastructure report provides this information?
A. Security Alarm Trending Summary
B. Site Network Summary
C. 802.11n Network Summary
D. Wireless Network Executive Summary
Answer:
D
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Question 11
You troubleshoot the switch that a WLC is connected to and find that some VLANs were missing and the wireless clients did not receive IP details. Which VTP mode must be configured on the switch for the switch to receive the VLAN details automatically from the central switch?
A. off
B. transparent mode
C. client mode
D. server mode
Answer:
C
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Question 12
Which two factors must be statically configured before you conduct a passive RF site survey with a standalone AP? (Choose two.)
A. channel assignment
B. Tx power level
C. passive client
D. channel scan defer priority
E. DTPC
Answer:
A, B
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Question 13
You have been asked to configure multiple AAA servers on the WLC for network user authentication. During 802.1x authentication, if the username does not show up in the first RADIUS server, what will the WLC do next?
A. The user will be prompted for web authentication
B. The WLC will continue to try all RADIUS servers in round-robin fashion until the username is found in one of them.
C. The second RADIUS server will be checked.
D. The RADIUS server will most probably send back a RADIUS reject which means the WLC should not authenticate the user.
Answer:
D
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Question 14
You are a network administrator and have been asked to enable wireless IPv6 support for client connectivity on your WLC 5520 running AireOS code 8.x. Which three prerequisites must be in place? (Choose three.)
A. The VLAN must be untagged when entering the controller interfaces.
B. The wireless LAN controller must have Layer 3 adjacency to the IPv6 router.
C. The VLAN must be tagged when entering the controller interfaces.
D. The underlying wired network must support IPv6 routing and an address assignment mechanism such as SLAAC or DHCPv6.
E. The wireless LAN controller must have Layer 2 adjacency to the IPv6 router.
F. An IPv6-capable router and/or switch are optional because the wireless LAN controller can use internal DHCPv6 address assignments.
Answer:
C, D, E
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Question 15
At which data rates are the multicast packets transmitted from an autonomous AP?