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NEW QUESTION # 43
Which statement describes an asynchronous API communication?
- A. An application can freeze if there is no response from a request.
- B. Synchronous communication is with a central orchestrator.
- C. Asynchronous communication waits for a response.
- D. It is not necessary to wait for availability of a resource.
Answer: D
NEW QUESTION # 44
Refer to the exhibit. Which command prints out (44, 22) when this code is run on Python 3?\
- A. print(swap1(b, d))
- B. print(swap2(a, b))
- C. print(swap1(d, b))
- D. print(swap2(22, 44))
Answer: A
NEW QUESTION # 45
After a configuration request is sent using NETCONF, which call releases any locks and resources associated with the session?
- A. <boot-app>
- B. <exit-operation>
- C. <close-activity>
- D. <close-session>
Answer: D
NEW QUESTION # 46
What tool is used to perform a "what if" failure analysis in a service provider network that is running Segment Routing?
- A. Cisco Network Services Orchestrator
- B. Cisco Evolved Programmable Network Manager
- C. Cisco WAN Automation Engine
- D. Cisco Segment Routing Path Computation Element
Answer: C
NEW QUESTION # 47
Refer to the exhibit.
What is the cause of the status of the interface subscription?
- A. This is the expected state of an active subscription.
- B. The router cannot establish a gRPC connection with the collector.
- C. The sensor-group "Interface-Counters" does not contain a valid YANG path.
- D. The router is waiting for a collector to dial in.
Answer: C
NEW QUESTION # 48
A user is debugging a problem with model-driven dial-in/out streams with gRPC for a Cisco IOS XR implementation. There is no streaming data and the path is not resolved when the show telemetry model- driven subscription command is issued on the router. What is the cause of the problem?
- A. SNMP is not enabled.
- B. The emsd process is not running.
- C. There are polling interval problems.
- D. There is no support for IOS XR 64-bit.
Answer: B
Explanation:
Reference: https://community.cisco.com/t5/service-providers-documents/implementing-grpc-telemetry-on-xr- devices/ta-p/3393966
NEW QUESTION # 49
Referring to the Cisco IOS XR configuration exhibit,
which labels will be advertised by the router with this configuration?
- A. Labels for all prefixes will be advertised to all the LDP peers.
- B. Labels for all prefixes will be advertised to the 10.1.1.1 LDP peer.
- C. No labels will be advertised to any LDP peers.
- D. Only the label for 10.1.1.1/32 will be advertised to all the LDP peers.
Answer: D
NEW QUESTION # 50
What is a benefit of Ansible for automating IOS XE or IOS XR platforms?
- A. Playbooks can be written in XML format.
- B. It offers native orchestration support for Cisco platforms.
- C. It has agent support
- D. It supports asynchronous orchestration.
Answer: B
NEW QUESTION # 51
Which two operations must be used to allow a network engineer to use NETCONF to configure and manage networking devices? (Choose two.)
- A. <open-session>
- B. <remove-config>
- C. <get-config>
- D. <close-session>
- E. <put>
Answer: C,D
Explanation:
Section: Automation and Orchestration Platforms
NEW QUESTION # 52
Refer to the exhibit. Which two configuration leaves in this YANG model are optional? (Choose two.)
- A. mtu
- B. last-change
- C. oper-status
- D. enabled
- E. type
Answer: A,B
NEW QUESTION # 53
What are two benefits of using Cisco NSO? (Choose two.)
- A. It can replace the CI/CD pipeline tools.
- B. It uses load balancing services for better traffic distribution.
- C. It easily integrates into northbound systems and APIs.
- D. It automatically discovers all deployed services.
- E. It abstracts the device adapter and complex device logic from the service logic.
Answer: C,E
Explanation:
Section: 3.0 Network Device Programmability
Explanation/Reference: https://www.ciscolive.com/c/dam/r/ciscolive/us/docs/2018/pdf/BRKDCN-2498.pdf
NEW QUESTION # 54
What is an interior YANG data node that exists in at most one instance in the data tree and has no value?
- A. container node
- B. listing node
- C. leaf node
- D. tree node
Answer: A
NEW QUESTION # 55
An engineer just completed the installation of Cisco NSO and all of its components. During testing, some of the services are not working properly. To resolve the issue, the engineer started undeploying service instances.
What can this cause?
- A. It removes the service configuration from the network device only.
- B. It removes the service configuration from NSO only.
- C. It runs the service code again when the device is out of sync.
- D. It removes the service configuration from the network and NSO.
Answer: D
NEW QUESTION # 56
An engineer wants to replace the BLOCK_BAD ACL on the Cisco IOS XE router with this new content. The engineer wants to use RESTCONF for this and constructs a PUT request to the resource/restconf/data/native/ip/access-list/Cisco-IOS-XE-acl:extended=BLOCK_BAD.
What must the body look like to achieve the Cisco IOS XE configuration?
Desired configutation:
ip access-list extended BLOCK_BAD
permit ip any host 192.168.20.1
deny ip any any
- A.
- B.
- C.
- D.
Answer: A
NEW QUESTION # 57
Refer to the exhibit.
An engineer updated the skeleton template. How can a device be entered into the YANG Model?
- A. Modify the device instance of the device by referencing the acl_lab variable from our YANG model.
- B. Modify the device instance by referencing the device variable from our YANG model.
- C. Deploy a service instance that configures a VLAN of a list of devices referenced to the service YANG model.
- D. Deploy a service instance that configures a VLAN of all of the devices present in Cisco NSO.
Answer: B
NEW QUESTION # 58
Refer to the exhibit. A Python script is created to add a new device on Cisco NSO using RESTCONF API. The device is added successfully, but a 405 Method Not Allowed RESTCONF error code has received as the line to fetch SSH keys runs. Which code is missing to complete the script?
- A. response = requests.post(baseUriOperation + "/devices/device=ios-device/ssh/fetch-host-keys", auth=auth, headers=headers)
- B. response = requests.put(baseUriOperation + "/devices/device=ios-device/ssh/fetch-host-keys", auth=auth, headers=headers)
- C. response = requests.put(baseUriOperation + "/devices/device=ios-device/ssh/request-host-keys", auth=auth, headers=headers)
- D. response = requests.post(baseUriOperation + "/devices/device=ios-device/ssh/request-host- keys", auth=auth, headers=headers)
Answer: A
NEW QUESTION # 59
An engineer is deploying a Python script to manage network devices through SSH. Which library based on Paramiko is used?
- A. sshmiko
- B. libssh2
- C. netmiko
- D. paramiko.agent
Answer: C
Explanation:
Reference:
https://pynet.twb-tech.com/blog/automation/netmiko.html
NEW QUESTION # 60
Refer to the exhibit.
What is the result of the Ansible task?
- A. It validates the BGP configuration on a Cisco IOS XR router, but it is a read-only module and cannot modify the configuration on the router.
- B. It validates the BGP configuration on a Cisco IOS XE router, but it is a check mode-only network module and cannot modify the configuration on the router.
- C. It configures a Cisco IOS XR router with BGP AS65000 with two neighbors and redistributes OSPF into BGP.
- D. It configures a Cisco IOS router with BGP on AS500 and redistributes OSPF into BGP.
Answer: C
Explanation:
Reference:
https://docs.ansible.com/ansible/latest/modules/iosxr_bgp_module.html
NEW QUESTION # 61
Refer to the exhibit.
Regarding the Python script using YDK, what is the result for a device that is running Cisco IOS XR Software?
- A. prints the uptime of the CRUDService
- B. prints the system uptime
- C. retrieves the system time
- D. configures the system time
Answer: B
NEW QUESTION # 62
Refer to the exhibit. Using the provided XML snippet, which Xpath expression prints "Jane"?
- A. //employee[1]/firstName/text()
- B. //employee[1]/firstName/value()
- C. //employee[0]/firstName/text()
- D. //employee[0]/firstName/value()
Answer: A
Explanation:
Xpath has a index number starting from 1, and I have run the snippet using lxml in python confirms index 1 is correct:
from lxml import etree
html = etree.parse('employee.html')
print type(html)
result = html.xpath('//employee[1]/firstName/text()')
print result
Output:
<type 'lxml.etree._ElementTree'>
['Jane']
NEW QUESTION # 63
What is a benefit of Ansible for automating IOS XE or IOS XR platforms?
- A. Playbooks can be written in XML format.
- B. It offers native orchestration support for Cisco platforms.
- C. It has agent support
- D. It supports asynchronous orchestration.
Answer: B
Explanation:
Section: 2.0 Automation APIs and Protocols
NEW QUESTION # 64
Refer to the exhibit.
The ncclient Python script is captured from the ncclient import manager. Which configuration on the Cisco IOS XE device is the script used to enable?
- A. router ospf 100 router-id 1.1.1.1
- B. router ospf 100 router-id 10.1.1.0
network 1.1.1.1 0.0.0.3 area 0 - C. router ospf 100
network 10.1.1.0 0.0.0.3 area 0 - D. router ospf 100 router-id 1.1.1.1
network 10.1.1.0 0.0.0.3 area 0
Answer: D
NEW QUESTION # 65 
Refer to the exhibit. When YDK is used to interact with Cisco routers, what is the purpose of passing intf_f into the crud_service.read() method?
- A. It passes default values into the crud_service, which reconfigures all interfaces to their default configurations.
- B. The Interfaces() class acts as a NETCONF filter, which limits the data returned to that of the openconfig:interfaces YANG model.
- C. It locks the interfaces from modification by other active NETCONF sessions.
- D. It provides the data types of the openconfig:interfaces model to the router for dynamic configuration of the interfaces.
Answer: A
Explanation:
Section: Automation and Orchestration Platforms
NEW QUESTION # 66
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Cisco 300-535 certification exam is an excellent certification for IT professionals who want to enhance their skills in automating and programming Cisco Collaboration Solutions. Automating and Programming Cisco Collaboration Solutions certification exam validates the candidate's knowledge and skills in various areas such as Python programming, REST APIs, and scripting. Candidates who pass 300-535 exam will be well-equipped to advance their careers in the IT industry.
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