Cisco 350-401 Online Practice Questions and Exam Preparation

Cisco 350-401 Online Questions & Answers

• Question 731:

  What is one difference between SaltStack and Ansible?

  A. SaltStack uses the Ansible agent on the box, whereas Ansible uses a Telnet server on the box.
  B. SaltStack uses an API proxy agent to program Cisco boxes in agent mode, whereas Ansible uses a Telnet connection.
  C. SaltStack uses SSH to interact with Cisco devices, whereas Ansible uses an event bus.
  D. SaltStack is constructed with minion, whereas Ansible is constructed with YAML.
  D. SaltStack is constructed with minion, whereas Ansible is constructed with YAML.

• Question 732:

  Refer to the exhibit.

  import json

  from requests import get Headers = { "Content-Type" : "application/yang-data+json", "Accept" : "application/yang-data+json" }

  Devices = open("devices.txt", "r")

  for Device in Devices.readlines():

  Hostname, IP, Login, Pass = Device.strip().split(",")

  URL = f"https://{IP}/restconf/data/Cisco-IOS-XE-native:native"Creds=(Login,Pass)Response=get(URL,auth=Creds,headers=Headers,verify=False)

  How should the script be completed so that each device configuration is saved into a JSON-formatted file under the device name?

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  A. Option A

• Question 733:

  Refer to the exhibit.

  

  

  Communication between R2 and R3 over FastEthenet1/1 falls.

  What is the root cause of the failure?

  A. The subnet mask is different between the two interfaces.
  B. The interface of R3 is not operational.
  C. The wrong type of cable is connected between the two interfaces.
  D. IP CEF is disabled on R3.
  A. The subnet mask is different between the two interfaces.

  ---

  Explanation

  Provided answer is correct.

  I tested this in GNS3. Kept the subnet mask on one side /30 and the other side /29. Got on one side debug outputs:

  *Sep 8 22:58:38.295: IP ARP req filtered src 10.10.12.1 ca01.37c4.0000, dst 10.10.12.5 0000.0000.0000 wrong cable, interface FastEthernet0/0 And the other side:

  *Sep 8 22:58:37.747: IP ARP: creating incomplete entry for IP address: 10.10.12.5 interface FastEthernet0/0

  The output with wrong cable is misleading.

• Question 734:

  SIMULATION

  Guidelines

  This is a lab item in which tasks will be performed on virtual devices.

  1. Refer to the Tasks tab to view the tasks for this lab item.

  2. Refer to the Topology tab to access the device console(s) and perform the tasks.

  3. Console access is available for all required devices by clicking the device icon or using the tab(s) above the console window.

  4. All necessary preconfigurations have been applied.

  5. Do not change the enable password or hostname for any device.

  6. Save your configurations to NVRAM before moving to the next item.

  7. Click Next at the bottom of the screen to submit this lab and move to the next question.

  8. When Next is clicked, the lab closes and cannot be reopened.

  Topology

  

  Tasks

  OSPF is preconfigured on all devices except R20. Configure R20 to complete these tasks.

  Task 1:

  Configure OSPF according to the topology using these requirements:

  1. Use Process ID 10.

  2. Use Loopback1 for the Router ID.

  3. Advertise all networks into OSPF.

  - Use network statements under the OSPF process to accomplish this task.

  Task 2:

  Configure a /20 summary route for Area 40.

  Advertise only Type 3 LSAs into Area 0.

  R20

  

  A. See the solution below in Explanation.
  B. Place Holder
  C. Place Holder
  D. Place Holder
  A. See the solution below in Explanation.

  ---

  Explanation

  router ospf 10

  router-id Loopback1 network 10.20.30.0 0.0.0.255 area 0 network 10.10.30.0 0.0.0.255 area 40 network 10.10.20.0 0.0.0.255 area 40 area 40 range 10.40.0.0 255.255.240.0

  !

• Question 735:

  Refer to the exhibit.

  

  Cisco DNA Center has obtained the username of the client and the multiple devices that the client is using on the network.

  How is Cisco DNA Center getting these context details?

  A. The administrator had to assign the username to the IP address manually in the user database tool on Cisco DNA Center.
  B. Those details are provided to Cisco DNA Center by the Identity Services Engine
  C. Cisco DNA Center pulled those details directly from the edge node where the user connected.
  D. User entered those details in the Assurance app available on iOS and Android devices
  B. Those details are provided to Cisco DNA Center by the Identity Services Engine

• Question 736:

  Which statement about multicast RPs is true?

  A. RPs are required only when using protocol independent multicast dense mode.
  B. RPs are required for protocol independent multicast sparse mode and dense mode.
  C. By default, the RP is needed periodically to maintain sessions with sources and receivers
  D. By default, the RP is needed only to start new sessions with sources and receivers.
  D. By default, the RP is needed only to start new sessions with sources and receivers.

  ---

  Explanation

  A rendezvous point (RP) is required only in networks running Protocol Independent Multicast sparse mode (PIM-SM).

  By default, the RP is needed only to start new sessions with sources and receivers.

  References:

  https://www.cisco.com/c/en/us/td/docs/ios/solutions_docs/ip_multicast/White_papers/rps.html

  For your information, in PIM-SM, only network segments with active receivers that have explicitly requested multicast data will be forwarded the traffic. This method of delivering multicast data is in contrast to the PIM dense mode (PIM-DM) model. In PIM-DM, multicast traffic is initially flooded to all segments of the network. Routers that have no downstream neighbors or directly connected receivers prune back the unwanted traffic. Reference: (https://www.cisco.com/c/en/us/td/docs/ios/solutions_docs/ip_multicast/White_papers/rps.html)

• Question 737:

  Refer to the exhibit.

  Which command must be configured for RESTCONF to operate on port 8888?

  

  A. ip http port 8888
  B. restconf port 8888
  C. ip http restconf port 8888
  D. restconf http port 8888
  A. ip http port 8888

• Question 738:

  Which JSON script is properly formatted?

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  C. Option C

• Question 739:

  What is a characteristic of VXLAN?

  A. It extends Layers 2 and Layer 3 overlay network over a Layer 2 underly.
  B. It has a 12-byte packet header.
  C. Its frame encapsulation is performed by MAC-in-UDP.
  D. It uses TCP for transport
  C. Its frame encapsulation is performed by MAC-in-UDP.

• Question 740:

  Refer to the exhibit.

  

  The administrator troubleshoots an EtherChannel that keeps moving to err-disabled.

  Which two actions must be taken to resolve the issue? (Choose two.)

  A. Reload the switch to force EtherChannel renegotiation
  B. Ensure that interfaces Gi1/0/2 and Gi1/0/3 connect to the same neighboring switch.
  C. Ensure that the switchport parameters of Port channel1 match the parameters of the port channel on the neighbor switch
  D. Ensure that the corresponding port channel interface on the neighbor switch is named Portchannel1.
  E. Ensure that the neighbor interfaces of Gi1/0/2 and Gi/0/3 are configured as members of the same EtherChannel
  B. Ensure that interfaces Gi1/0/2 and Gi1/0/3 connect to the same neighboring switch.
  E. Ensure that the neighbor interfaces of Gi1/0/2 and Gi/0/3 are configured as members of the same EtherChannel

  ---

  Explanation

  This feature was first implemented in order to handle special collision situations in which the switch detected excessive or late collisions on a port. Excessive collisions occur when a frame is dropped because the switch encounters 16 collisions in a row. Late collisions occur after every device on the wire should have recognized that the wire was in use. Possible causes of these types of errors include: A cable that is out of specification (either too long, the wrong type, or defective) A bad network interface card (NIC) card (with physical problems or driver problems) A port duplex misconfiguration is a common cause of the errors because of failures to negotiate the speed and duplex properly between two directly connected devices (for example, a NIC that connects to a switch). Only half-duplex connections should ever have collisions in a LAN. Because of the carrier sense multiple access (CSMA) nature of Ethernet, collisions are normal for half duplex, as long as the collisions do not exceed a small percentage of traffic.