300-550: Designing and Implementing Cisco Network Programmability

Which two statements about the NX-API are true? (Chose two.)

NX-API supports XML-RPC
NX-API is enabled by default
NX-API supports JSON-RPC
The nxapi_auth cookie expires in 30 minutes.
NX-API maps to NX-OS NETCONF.

Correct answer: AC

Explanation:

NX-API supports JSON-RPC, JSON, and XML formats.Reference:http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus7000/sw/programmability/guide/b_Cisco_Nexus_7000_Series_NX-OS_Programmability_Guide/b_Cisco_Nexus_7000_Series_NX-OS_Programmability_Guide_chapter_0101.html

NX-API supports JSON-RPC, JSON, and XML formats.

Reference:

http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus7000/sw/programmability/guide/b_Cisco_Nexus_7000_Series_NX-OS_Programmability_Guide/b_Cisco_Nexus_7000_Series_NX-OS_Programmability_Guide_chapter_0101.html

Which statement is used to associate a submodule and a parent module in a YANG data model?

import
namespace
include
belongs-to

Correct answer: C

Explanation:

The "include" statement is used to make content from a submodule available to that submodule's parent module, or to another submodule of that parent module.Reference:https://tools.ietf.org/html/rfc6020

The "include" statement is used to make content from a submodule available to that submodule's parent module, or to another submodule of that parent module.

Reference:

https://tools.ietf.org/html/rfc6020

A web service returns a JSON object to your Python script. What is the most logical object in which to store the JSON response?

an integer
a dictionary
a tuple
a string
a list

Correct answer: A

Explanation:

Reference:http://www.tutorialspoint.com/json/json_quick_guide.htm

Reference:

http://www.tutorialspoint.com/json/json_quick_guide.htm

Refer to the exhibit. Which Linux command provides output that is similar to the output in the exhibit?

cat/etc/hosts
tcpdump -a
ifconfig -av
netstat -an

Correct answer: C

Explanation:

One of the most dearest commands to every linux admin is ifconfig.Linux ifconfig command provides a convenient way to view or modify the network settings of a network interface. Most of the time, ifconfig command is used to get the information about network interface configurations. However, ifconfig also reports many other useful information related to the status of network interface.Reference:http://blmrgnn.blogspot.com/2014/01/linux-ifconfig-command-output-explained.html

One of the most dearest commands to every linux admin is ifconfig.Linux ifconfig command provides a convenient way to view or modify the network settings of a network interface. Most of the time, ifconfig command is used to get the information about network interface configurations. However, ifconfig also reports many other useful information related to the status of network interface.

Reference:

http://blmrgnn.blogspot.com/2014/01/linux-ifconfig-command-output-explained.html

Which two network configuration protocols use XML as a data representation format? (Choose two.)

NETCONF
CORBA
TOSCA
SNMP
RESTCONF

Correct answer: AD

Explanation:

Data modeling language for the definition of data sent over the NETCONF network configuration protocol.Many network management protocols have associated data modeling languages. The first widely deployed Internet standard for network management was the Simple Network Management Protocol (SNMP).Reference:https://en.wikipedia.org/wiki/YANG

Data modeling language for the definition of data sent over the NETCONF network configuration protocol.

Many network management protocols have associated data modeling languages. The first widely deployed Internet standard for network management was the Simple Network Management Protocol (SNMP).

Reference:

https://en.wikipedia.org/wiki/YANG

In ACI, where is a concrete object in the MIT most often located?

hypervisor DB
integrated Layer 4 to Layer 7 device
switch ASIC
leaf or spine

Correct answer: C

Explanation:

Resolved = created by the APIC as a unit/object to communicate and pass information to the switchesConcrete = objects used by the switches to program hardwareReference:https://clnv.s3.amazonaws.com/2015/usa/pdf/BRKACI-2101.pdf

Resolved = created by the APIC as a unit/object to communicate and pass information to the switches

Concrete = objects used by the switches to program hardware

Reference:

https://clnv.s3.amazonaws.com/2015/usa/pdf/BRKACI-2101.pdf

Which two statements about IOS XE on a Cisco CSR1000v Router programmatic interface are true? (Choose two.)

It supports I2RS.
It supports open YANG data models
It supports BGP-LS/PCEP as a southbound interface
It supports RESTCONF
It supports OpFlex

Correct answer: CE

Which two data representation formats are used in RESTCONF? (Choose two.)

HTML
YAML
HML
GML
ASN.1
JSON

Correct answer: DF

Refer to the exhibit. Which action effectively secures the controller?

Enable HTTP to HTTPS redirect.
Require complex passwords.
Use NUT on the router before the controller.
Blacklist the public WAN.
Whitelist the Admins network and block all others.

Correct answer: B

Which statement indicates that an element in a YANG data model contains data that describes operational state information about the device or service?

state true
config false
mode state
state enabled

Correct answer: D

Which two parts are required for a RESTful API call? (Choose two.)

resource
parameter
method
query
fragment

Correct answer: AB

Explanation:

Reference:http://stackoverflow.com/questions/4024271/rest-api-best-practices-where-to-put-parameters

Reference:

http://stackoverflow.com/questions/4024271/rest-api-best-practices-where-to-put-parameters

Vendor:	Cisco
Exam Code:	300-550
Exam Name:	Designing and Implementing Cisco Network Programmability
Date:	Oct 24, 2025
File Size:	1010 KB

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