Cisco CCNA 200-301 Questions & Answers

• Question 911:

  Refer to the exhibit. An administrator must turn off the Cisco Discovery Protocol on the port configured with address last usable address in the 10.0.0.0/30 subnet. Which command set meets the requirement?

  

  A. interface gi0/1 no cdp enable

  B. interface gi0/1 clear cdp table

  C. interface gi0/0 no cdp advertise-v2

  D. interface gi0/0 no cdp run

  Correct Answer: A

  254 is last usable address and no cdp run is not a valid interface command so it can't be B anyway. [no] cdp run is a global command. The valid config-if command is no cdp enable

• Question 912:

  When a WLAN with WPA2 PSK is configured in the Wireless LAN Controller GUI which format is supported?

  A. Unicode

  B. base64

  C. decimal

  D. ASCII

  Correct Answer: D

• Question 913:

  Which 802.11 management frame type is sent when a client roams between access points on the same SSID?

  A. Reassociation Request

  B. Probe Request

  C. Authentication Request

  D. Association Request

  Correct Answer: A

• Question 914:

  An engineer observes high usage on the 2.4GHz channels and lower usage on the 5GHz channels. What must be configured to allow clients to preferentially use 5GH2 access points?

  A. Re- Anchor Roamed Clients

  B. 11ac MU-MIMO

  C. OEAP Split Tunnel

  D. Client Band Select

  Correct Answer: D

  Ref: Cisco Catalyst 9800 Series Wireless Controller Software Configuration Guide, Cisco IOS XE Gibraltar 16.12.x Information About Configuring Band Selection, 802.11 Bands, and Parameters Band Select Band select enables client radios that are capable of dual-band (2.4 and 5-GHz) operations to move to a less congested 5-GHz access point. The 2.4-GHz band is often congested. Clients on this band typically experience interference from

  Bluetooth devices, microwave ovens, and cordless phones as well as co-channel interference from other access points because of the 802.11b/g limit of 3 nonoverlapping channels. To prevent these sources of interference and improve

  overall network performance, configure band selection on the device.

• Question 915:

  What uses HTTP messages to transfer data to applications residing on different hosts?

  A. OpenFlow

  B. OpenStack

  C. OpFlex

  D. REST

  Correct Answer: D

  REST (Representational Statre Transfer) describes a type of API that allows applications to sit on different hosts, using HTTP messages to transfer data over the API.

• Question 916:

  A network engineer must configure the router R1 GigabitEthernet1/1 interface to connect to the router R2 GigabitEthernet1/1 interface. For the configuration to be applied the engineer must compress the address 2001:0db8:0000:0000:0500:000a:400F:583B. Which command must be issued on the interface?

  A. ipv6 address 2001:0db8::5: a: 4F 583B

  B. ipv6 address 2001:db8::500:a:400F:583B

  C. ipv6 address 2001 db8:0::500:a:4F:583B

  D. ipv6 address 2001::db8:0000::500:a:400F:583B

  Correct Answer: B

• Question 917:

  What does an SDN controller use as a communication protocol to relay forwarding changes to a southbound API?

  A. OpenFlow

  B. Java

  C. REST

  D. XML

  Correct Answer: A

• Question 918:

  An administrator must secure the WLC from receiving spoofed association requests. Which steps must be taken to configure the WLC to restrict the requests and force the user to wait 10 ms to retry an association request?

  A. Enable Security Association Teardown Protection and set the SA Query timeout to 10

  B. Enable MAC filtering and set the SA Query timeout to 10

  C. Enable 802.1x Layer 2 security and set me Comeback timer to 10

  D. Enable the Protected Management Frame service and set the Comeback timer to 10

  Correct Answer: D

  "You then need to specify the comeback timer and SA query timeout. The comeback timer specifies the time that an associated client must wait before the association can be tried again..." https://www.cisco.com/c/en/us/support/docs/wireless-mobility/wireless-lan-wlan/212576-configure-802-11w-management-frame-prote.html

• Question 919:

  Which networking function occurs on the data plane?

  A. forwarding remote client/server traffic

  B. facilitates spanning-tree elections

  C. processing inbound SSH management traffic

  D. sending and receiving OSPF Hello packets

  Correct Answer: A

  The networking function that occurs on the data plane is forwarding remote client/server traffic.

  The data plane is responsible for forwarding user traffic through the network, and it is implemented by forwarding devices such as switches and routers. The other options listed, such as processing inbound SSH management traffic, sending and receiving OSPF Hello packets, and facilitating spanning-tree elections, are functions that occur on the control plane, which is responsible for managing and configuring the network devices.

• Question 920:

  Which protocol does an access point use to draw power from a connected switch?

  A. Internet Group Management Protocol

  B. Adaptive Wireless Path Protocol

  C. Cisco Discovery Protocol

  D. Neighbor Discovery Protocol

  Correct Answer: C

  CDP is used in output power negotiations for POE capable devices; like IP Phones, AccessPoints etc. https://learningnetwork.cisco.com/s/article/cisco-discovery-protocol-cdp-x