Cisco 350-401 Online Practice Questions and Exam Preparation

Cisco 350-401 Online Questions & Answers

• Question 761:

  Which line must be added in the Python function to return the JSON object {"cat_9k": "FXS193202SE")?

  

  A. return (json.dumps({d['hostname']: d['serialNumber'] for d in json.loads(test_json)['response']}))
  B. return (json.dumps({for d in json.loads(test_json)['response']: d['hostname']: d['serialNumber']}))
  C. return (json.loads({d['hostname']: d['serialNumber'] for d in json.dumps(test_json)['response'}))
  D. return (json.loads({for d in json.dumps(test_json)['response']: d['hostname']: d['serialNumber']}))
  A. return (json.dumps({d['hostname']: d['serialNumber'] for d in json.loads(test_json)['response']}))

  ---

  Explanation

  json.loads = from json to python json.dumps = from python to json

• Question 762:

  Which two sources cause interference for Wi-Fi networks? (Choose two).

  A. Mirrored wall
  B. 900MHz baby monitor
  C. Fish tank
  D. DECT 6.0 cordless phone
  E. Incandescent lights
  A. Mirrored wall
  C. Fish tank

  ---

  Explanation

  Windows can actually block your WiFi signal. How? Because the signals will be reflected by the glass. Some new windows have transparent films that can block certain wave types, and this can make it harder for your WiFi signal to pass through.

  Tinted glass is another problem for the same reasons. They sometimes contain metallic films that can completely block out your signal. Mirrors, like windows, can reflect your signal. They`re also a source of electromagnetic interference because of their metal backings.

  https://dis-dot-dat.net/what-materials-can-block-a-wifi-signal/

  An incandescent light bulb, incandescent lamp or incandescent light globe is an electric light with a wire filament heated until it glows. WiFi operates in the gigahertz microwave band. The FCC has strict regulations on RFI (radio frequency interference) from all sorts of things, including light bulbs -> Incandesent lights do not interfere Wi-Fi networks.

  Note:

  + Many baby monitors operate at 900MHz and won`t interfere with Wi-Fi, which uses the 2.4GHz band.

  + DECT cordless phone 6.0 is designed to eliminate wifi interference by operating on a different frequency.

  There is essentially no such thing as DECT wifi interference.

• Question 763:

  In a Cisco DNA Center Plug and Play environment, why would a device be labeled unclaimed?

  A. The device has not been assigned a workflow.
  B. The device could not be added to the fabric.
  C. The device had an error and could not be provisioned.
  D. The device is from a third-party vendor.
  A. The device has not been assigned a workflow.

  ---

  Explanation

  Unclaimed--Device has not been provisioned.

  Planned--Device has been claimed but has not yet contacted the server.

  Onboarding--Device onboarding is in progress.

  Provisioned--Device is successfully onboarded and added to inventory.

  Error--Device had an error and could not be provisioned.

• Question 764:

  Refer to the exhibit.

  

  What does the response "204 No Content" mean for the REST API request?

  A. Interface loopback 100 is removed from the configuration.
  B. Interface loopback 100 is not removed from the configuration.
  C. Interface loopback 100 is not found in the configuration.
  D. The DELETE method is not supported.
  C. Interface loopback 100 is not found in the configuration.

• Question 765:

  Refer to the exhibit.

  

  An attacker can advertise OSPF fake routes from 172.16.20.0 network to the OSPF domain and black hole traffic. Which action must be taken to avoid this attack and still be able to advertise this subnet into OSPF?

  A. Configure 172.16.20.0 as a stub network.
  B. Apply a policy to filter OSPF packets on R2.
  C. Configure a passive Interface on R2 toward 172.16.20.0.
  D. Configure graceful restart on the 172.16.20.0 interface.
  C. Configure a passive Interface on R2 toward 172.16.20.0.

  ---

  Explanation

  agree with passive interface reference:

  https://networklessons.com/ospf/ospf-passive-interface

• Question 766:

  A customer requires their wireless network to be fully functional, even if the wireless controller fails. Which wireless design supports these requirements?

  A. FlexConnect
  B. mesh
  C. centralized
  D. embedded
  A. FlexConnect

• Question 767:

  Reter to the exhibit.

  

  An administrator troubleshoots intermittent connectivity from internal hosts to an external public server. Some internal hosts can connect to the server while others receive an ICMP Host Unreachable message and these hosts change over time. What is the cause of this issue?

  A. The translator does not use address overloading
  B. The NAT ACL does not match alt internal hosts
  C. The NAT ACL and NAT pool share the same name
  D. The NAT pool netmask rs excessively wide
  A. The translator does not use address overloading

• Question 768:

  A client device roams between access points located on defferent floors in an atrium. The access points joined to the same controller and configuration in local mode. The access points are in different IP addresses, but the client VLAN in the group same.

  What type of roam occurs?

  A. inter-controller
  B. inter-subnet
  C. intra-VLAN
  D. intra-controller
  D. intra-controller

  ---

  Explanation

  Mobility, or roaming, is a wireless LAN client's ability to maintain its association seamlessly from one access point to another securely and with as little latency as possible. Three popular types of client roaming are:

  Intra-Controller Roaming: Each controller supports same-controller client roaming across access points managed by the same controller. This roaming is transparent to the client as the session is sustained, and the client continues using the same DHCP-assigned or client-assigned IP address.

  Inter-Controller Roaming: Multiple-controller deployments support client roaming across access points managed by controllers in the same mobility group and on the same subnet. This roaming is also transparent to the client because the session is sustained and a tunnel between controllers allows the client to continue using the same DHCP- or client-assigned IP address as long as the session remains active. Inter-Subnet Roaming: Multiple-controller deployments support client roaming across access points managed by controllers in the same mobility group on different subnets. This roaming is transparent to the client because the session is sustained and a tunnel between the controllers allows the client to continue using the same DHCP-assigned or client-assigned IP address as long as the session remains active.

  https://www.cisco.com/c/en/us/td/docs/wireless/controller/7- 4/configuration/guides/consolidated/b_cg74_CONSOLIDATED/b_cg74_CONSOLIDA TED_chapter_01100.html

  In three types of client roaming above, only with Inter-Subnet Roaming the controllers are in different subnets.

• Question 769:

  Refer to the exhibit.

  

  Which two commands ensure that DSW1 becomes root bridge for VLAN 10? (Choose two.)

  A. DSW1(config)#spanning-tree vlan 10 priority 4096
  B. DSW1(config)#spanning-tree vlan 10 priority root
  C. DSW2(config)#spanning-tree vlan 10 priority 61440
  D. DSW1(config)#spanning-tree vlan 10 port-priority 0
  E. DSW2(config)#spanning-tree vlan 20 priority 0
  A. DSW1(config)#spanning-tree vlan 10 priority 4096
  B. DSW1(config)#spanning-tree vlan 10 priority root

• Question 770:

  Which statement about dynamic GRE between a headend router and a remote router is true?

  A. The headend router learns the IP address of the remote end router statically
  B. A GRE tunnel without an IP address has a status of administratively down
  C. GRE tunnels can be established when the remote router has a dynamic IP address
  D. The remote router initiates the tunnel connection
  D. The remote router initiates the tunnel connection