300-435 ENAUTO: Automating Cisco Enterprise Solutions v2.0 (300-435) practice questions

Sample questions 15 of 150 shown

1. Q1

   Which YANG model type is IETF standardized and vendor-neutral?

   1. ietf-interfaces
   2. openconfig-interfaces
   3. Cisco-IOS-XE-native
   4. Cisco-NX-OS-device

   IETF models (RFCs) are vendor-neutral standards. OpenConfig is industry consortium. Cisco-native is vendor-specific.
2. Q2

   Which transport and port does NETCONF use on Cisco IOS XE?

   1. SSH over TCP 830
   2. HTTPS over TCP 443
   3. gRPC over TCP 57400
   4. Telnet over TCP 23

   NETCONF (RFC 6241) uses SSH on TCP 830 by default on Cisco IOS XE.
3. Q3

   Which RFC defines YANG tree diagram representation?

   1. RFC 8340
   2. RFC 6020
   3. RFC 7950
   4. RFC 8525

   RFC 8340 defines YANG tree diagrams. 6020=YANG 1, 7950=YANG 1.1, 8525=YANG library.
4. Q4

   In YANG, which statement defines a keyed list of entries?

   1. list
   2. leaf
   3. container
   4. leaf-list

   A YANG 'list' defines multiple entries keyed by leaf(s). Container groups nodes (single). Leaf is single value. Leaf-list is unkeyed scalars.
5. Q5

   Which HTTP header is required for RESTCONF with JSON?

   1. Content-Type: application/yang-data+json
   2. Content-Type: application/json
   3. Accept: text/xml
   4. Content-Type: text/html

   RFC 8040 defines application/yang-data+json for RESTCONF JSON payloads.
6. Q6

   What is a YANG module container statement used for?

   1. Groups related leaf nodes
   2. Defines a list of entries
   3. Defines a leaf value
   4. Defines a key

   Container groups related leaf and container nodes into a hierarchy.
7. Q7

   What is the difference between YANG leaf and leaf-list?

   1. leaf=one value; leaf-list=multiple unkeyed scalar values
   2. Same thing
   3. leaf-list is for keys
   4. leaf is for lists

   leaf defines a single value. leaf-list defines multiple values without keys (like an array).
8. Q8

   What is pyang used for?

   1. YANG model validation and tree diagram generation
   2. Python automation
   3. NETCONF client
   4. Ansible module

   pyang validates YANG models and can generate tree diagrams with '-f tree' option per RFC 8340.
9. Q9

   What are the three types of YANG models?

   1. IETF (standards), OpenConfig (consensus), Cisco-native (vendor)
   2. Public and private
   3. Standard and custom
   4. Basic and advanced

   IETF=RFC standards, OpenConfig=multi-vendor industry, Cisco-native=full feature coverage.
10. Q10

    What is the default NETCONF port on Cisco IOS XE?

    1. 830
    2. 22
    3. 443
    4. 57400

    NETCONF uses TCP port 830 by default. SSH=22, HTTPS=443, gRPC=57400.
11. Q11

    Which RFC defines YANG 1.1?

    1. RFC 7950
    2. RFC 6020
    3. RFC 8340
    4. RFC 8525

    RFC 7950 defines YANG 1.1.
12. Q12

    What is a YANG module namespace?

    1. URI identifying the module uniquely
    2. Python namespace
    3. XML schema
    4. DNS name

    YANG namespace URI uniquely identifies the module.
13. Q13

    What does pyang -f tree generate?

    1. YANG tree diagram per RFC 8340
    2. JSON output
    3. Python code
    4. HTML docs

    pyang -f tree outputs the YANG module tree visualization.
14. Q14

    What is YANG Suite?

    1. Web tool for YANG payload generation and testing
    2. Python IDE
    3. CLI
    4. Monitoring

    YANG Suite constructs XML/JSON payloads from YANG models.
15. Q15

    YANG leaf-list vs list difference?

    1. leaf-list=unkeyed scalars; list=keyed entries
    2. Same
    3. leaf-list has keys
    4. list has no keys

    leaf-list is an array of scalars. list has keyed entries.

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