Share some CCIE Wireless 400-351 exam questions and answers below.
Which three statements about 802.11ac are true? (choose three)
A. MU-MIMO is supported in wave 1
B. MU-MIMO allows one AP to transmit unique data to multiple stations simultaneously
C. when using MU-MIMI up to 8 devices can transmit data at the same time
D. 802.11 a/b/g/n device are able to connect to 802.11ac radios
E. it IS possible to reach 160 MHz by combining two discontinuous 80 MHz channel block
F. 802.11 ac is supported in the 2.4- and 5-Ghz radio band
Answer: B,D,E
You are in process of installing Cisco prime high availability servers and you have a firewall between the primary and secondary server. Which two incoming and outgoing TCPIUDP ports must be enabled on the firewall for Cisco prime servers to exchange health monitoring heartbeat massage and to allow Oracle to synchronize data? (Choose two}
A. 1521
B. 8080
C. 8082
D. 1522
Answer: C,D
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
Answer: C
Which IEEE protocol can help a wireless client device to identify nearby APs that are available as roaming targets?
A. 802.11h
B. 802.11ac
C. 802.11k
D. 802.11n
E. 802.11w
Answer: C
Which two effects does TSPEC-based admission control have as it relates to WMM clients?(Choose two.)
A. Deny clients access to the VLAN that do not support WMM.
B. Allow access only for VoWLAN traffic when interference is detected.
C. Enforce airtime entitilement for wireless voice applications.
D. Ensure that call quality does not degrade for existing VoWLAN calls.
E. Deny clients access to the WLAN if they do not comply with the TERP standard.
Answer: BE
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