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200-355 — Free Practice Questions

10 free sample questions from a bank of 145, with the correct answers and explanations. No signup required — start practising right now.

1In the current RF environment, the noise floor is -95 dBm. A tablet needs an SNR of 25 dB to transmit at the required speed. What must the RSSI cell edge be to meet the required SNR?
  • -120 dBm
  • -90 dBm
  • -70 dBm
  • -60 dBm
  • -50 dBm
Answer: C
2Refer to the exhibit. A help desk ticket has been entered for the wireless infrastructure. A wireless client is not able to connect at IEEE 802.11n rates. Which option allows for connectivity?
200-355 question 2
  • Set WMM mode to Optional or Required.
  • Set Quality of Service (QoS) to Silver.
  • Set Quality of Service (QoS) to Platinum.
  • Set 7920 AP CAC to Enabled.
Answer: A
3An engineer has just deployed a Cisco Aironet 3702 Access Point with an access layer switch that supports IEEE 802.1af Power over Ethernet. How will the access points react to the wattage that is available in 802.1af?
  • disable the BVI interface
  • fail to boot in CAPWAP mode
  • operate in 3x3 MIMO mode
  • enable the 2.4-GHz radios with 40-MHz channel bonding
Answer: C
4Following a WLC upgrade you want to check what version of code the access point is running. Where can you find this information?
  • CLI > show sysinfo
  • GUI > Monitor > Software Version
  • CLI > show running configuration
  • GUI > Wireless > Access point > General
Answer: C
5Which three operations does the lightweight access point manage in a split-MAC design? (Choose three.)
  • association and re-association
  • frame exchange and client handshake
  • RF and mobility management
  • beacons and probe responses
  • MAC layer data encryption and decryption
  • authentication and key management
Answer: B, D, E
6An engineer has been asked to upgrade the FUS on the Wireless LAN controller. How can they monitor the status of the upgrade?
  • WLC GUI
  • WLC CLI
  • WLC Console
  • WLC Management in Prime Infrastructure
Answer: C
7A controller is connected to a Cisco Catalyst switch. The switch port configuration looks like this: interface GigabitEthernet 1/0/10 switchport switchport trunk encapsulation dot1q switchport trunk allowed vlan 1,20,30,50 switchport trunk native vlan 20 switchport mode trunk Which controller CLI command assigns its management interface to the native VLAN interface of the Cisco Catalyst switch?
  • config interface vlan management 20
  • config interface vlan management 0
  • config interface vlan management 1
  • config interface vlan management 30
Answer: B
8Which type of management tasks can be completed on a Cisco WLC remotely from a wireless client?
  • All management and configuration tasks can be performed from a wireless client except for using debug commands.
  • All management and configuration tasks, except uploads from and downloads to the Cisco WLC, are permitted.
  • In the default configuration, no management or configuration is possible through the GUI on the Cisco WLS.
  • The default configuration of the Cisco WLC allows only CLI access and then only the use of show commands, so no configuration is possible.
Answer: C
9A client wants to implement an enterprise WLAN solution with the minimum hardware deployed onsite. What solution fulfills this requirement?
  • converged
  • centralized
  • autonomous
  • cloud
Answer: C
10If an antenna has a dBd of 8.6, what is the dBi value?
  • 8.6
  • 6.46
  • 10.74
  • 6.2
Answer: C
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