Automation and Programmability

Question 1

Cisco PI

Answer 1

Prime Infrastructure is a traditional enterprise Cisco management platform that relies on a browser-based GUI to enable administrators to perform operations, diagnose problems and interact with devices on the network

Question 2

Cisco Network Assistant

Answer 2

Is a free Java-based desktop application that enables a local area network administrator to perform network operations by using a GUI

Question 3

Cisco IOS 15

Answer 3

Is a network device OS that is used to directly configure, manage and troubleshoot a single device using a CLI

Question 4

Cisco DNA Center

Answer 4

Is an enterprise Cisco management solution that is built specifically to support Cisco SDA, which abstracts the network configuration complexity by implementing a centralized controller and GUI

Question 5

Cisco SDA (Software-Defined Access)

Answer 5

Is a Cisco-developed means of building LANs by using policies and automation

Question 6

Chef, Puppet, Ansible and Salt

Answer 6

These are configuration management tools used to automate the installation, configuration and maintenance of multiple computer systems, including the software that runs on those systems. Puppet and Chef (written in Ruby) capabilities are more aligned with the needs of application developers, whereas the capabilities of Ansible and Salt (written in Python) are more closely related to system administrators needs

Question 7

Example of Southbound Interfaces (APIs)

Answer 7

NETCONF, OnePK, OpenFlow and OpFlex

Question 8

Examples of Northbound APIs

Answer 8

Java Open Services Gateway (OSGI) and REST (Representational State Transfer)

Question 9

NETCONF

Answer 9

Uses XML and RPCs to configure network devices. Typically relies on SSH for transport

Question 10

Northbound API aka Northbound Interface (NBI)

Answer 10

Enable a SDN controller to communicate with applications in the application plane

Question 11

OnePK

Answer 11

Is a Cisco propietary API that uses Java, C or Python to configure network devices. It can use SSL or Transport Layer Security (TLS) to encrypt data in transit

Question 12

OpenFlow

Answer 12

Uses an imperative SDN model in which detailed instructions are sent to the SDN controller when a new policy is to be configured

Question 13

OpFlex

Answer 13

Uses a declarative SDN model in which the instructions that are sent to the controller are not so detailed, allowing the devices in the data plane to make more network decisions about how to implement a given policy

Question 14

Southbound APIs

Answer 14

Enable an SDN controller to communicate with devices on the network data plane