Scripting

Front

Which type of configuration is represented in the output? Options: Ansible, Chef, JSON, Puppet

Back

Puppet

Answer explanation

"Puppet code is done in modules. Each module manages a specific task in the infrastructure such as installing and configuring a piece of software." Modules are reusable and shareable. Sample of resource declaration:

<TYPE> { '<TITLE>:
<ATTRIBUTE> => <VALUE>,
<ATTRIBUTE> => <VALUE>,
}

Front

Which technology is appropriate for communication between a SDN controller and applications running over the network? Options: OpenFlow, REST API, NETCONF, Southbound API

Back

OpenFlow

Answer explanation

Southbound communications is between SDN and switches/routers: Higher level to lower level: OpenFlow, SNMP, OpFlex, OSPF, NETCONF

Northbound communication is between SDN and applications: Lower level to higher level: REST API, RESTCONF

Front

Which purpose does a northbound API serve in a controller-based networking architecture?

Back

Facilitates communication between the controller and the applications

Front

Which software defined architecture plan assists network devices with making packet forwarding decisions by providing Layer 2 reachability and Layer 3 routing information?

Back

Control plane

Answer explanation

The control plane controls "how" data is forwarded.

The data plane controls the actual forwarding process.

Front

Which CRUD operation corresponds to the HTTP GET method?

Back

Read

Answer explanation

Both POST and PUT sends data. POST is idempotent (eeedempotent a function/operation that can be performed multiple times without changing the result). Assume you are designing an API for asking questions. Use POST if you would send that data to a list of questions. Use PUT if you would do that to a particular question.

Front

What is the function of a controller in controller-based networking?

Back

It serves as the centralized management point of an SDN architecture.

Front

What is the purpose of a southbound API in a controller-based networking architecture?

Back

Facilitates communication between the controller and the networking hardware

Front

Which API is used in controller-based architectures to interact with edge devices? Options: Overlay, Northbound, Underlay, Southbound

Back

Southbound

Front

After running the code shown, which step reduces the amount of data that the NETCONF server returns to the NETCONF client to only the interface's configuration? Options: Use the Ixml library to parse the data returned by the NETCONF server for the interface's configuration, Create an XML filter as a string and pass it to get_config() method as an argument, Create a JSON filter as a string and pass it to the get_config() method as an argument, Use the JSON library to parse the data returned by the NETCONF server for the interface's configuration

Back

Create an XML filter as a string and pass it to get_config() method as an argument

Front

What is a characteristic of a cloud-based network topology?

Back

Services are provided by a public, private, or hybrid deployment.