NETWORK AUTOMATION CCNA EXAM QUESTIONS

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NETWORK AUTOMATION CCNA EXAM QUESTIONS

Qs and Ans Expert- Explanation

This Exam contains:

-Guarantee passing score -38 Questions and Answers -format set of multiple-choice -Expert- Explanation

Question 1: Routed access layer

Answer:

SDA layout where all switches act as layer 3 switches using the IS-IS routing protocol. SDA edge nodes act as the default gateway.

Question 2: JSON

Answer:

Consists of objects and arrays. Objects can be nested.

Question 3: Examples of NBIs

Answer:

REST (JSON with HTTP), OSGi (Open Society Gateway initiative ) (Java-Based)

Question 4: VXLAN

Answer:

SDA encapsulates data link frames in which tunneling technology for delivery across the SDA network?

Question 5: POST

Answer:

CRUD action: Create

Question 6: Cisco DNA Center

Answer:

Serves as the controller for the network. In greenfield deployments, can control underlay and overlay. In existing infrastructure, must limit itself to overlay. Uses REST API for its NBI and a combination of SSH/Telnet (legacy devices) and RESTCONF/NETCONF (newer, SDA devices).

Question 7: Application Policy Infrastructure Controller

Answer:

APIC; pushes policies via OpFlex SBI to network devices that implement them.

Question 8: Examples of SBIs

Answer:

OpenPK, OpenFflow, OpFlex, NETCONF, RESTCONF Question 9: CRUD action: Read

Answer:

GET Question 10: CRUD action: Update

Answer:

PATCH, PUT

Question 11: The controller for SDA networks

Answer:

DNA Center

Question 12: RESTful API six attributes

Answer:

Client/server architecture, clear statement of cacheable/uncacheable, uniform interface, layered, code-on-demand.

Question 13: Puppet HTTPS port

Answer:

8140

Question 14: Data Serialisation

Answer:

To transform a server's internal representation of variables into something that can be sent to the client and interpreted. Easy to read for both humans and machines. Ex: JSON, YAML, XML.

Question 15: IBN

Answer:

Intent Based Networking

Question 16: Data Plane

Answer:

Traffic which is forwarded through the device. This is the normal user traffic forwarded by the device such as web browsing or email packets. Cannot be centralized.

Question 17: Chef HTTPS port

Answer:

443

Question 18: Underlay

Answer:

All the network devices, cables and wireless links. Encapsulated by layer 2 frames in layer 4 UDP datagrams via VXLAN tunnels.

Question 19: leaf switches

Answer:

In a spine and leaf architecture, endpoints connect only to the...

Question 20: DELETE

Answer:

CRUD action: Delete

Question 21: OSPF, EIGRP, RIP, BGP

Answer:

Control plane examples Question 22: Controller talks to network devices, usually a specialised API, using a...

Answer:

southbound interface Question 23: Changing the source or destinanation IP address, discarding a message due to a filter, de-encapsulating and re-encapsulating a packet in a data-link frame, etc.

Answer:

Data plane examples

Question 24: Spine and leaf topology

Answer:

All spine switches connect to all leaf switches, but no spine switch can connect to another spine switch and no leaf switch can connect to another leaf switch.

Question 25: Chef

Answer:

Similar to Puppet, a pull-model and agent-based tool written in Ruby. Agent communicates with the server using HTTPS. Can also work standalone using cookbooks stored locally or in a .tar.za archive on the internet.

Question 26: DNA Center Benefits

Answer:

Easier QoS configuration, analysis of encrypted traffic, information on client and device health, traffic monitoring over time and real-time path tracing.

Question 27: Ansible

Answer:

A push-model, agentless tool written in Python. Does not rely on a piece of software running on target devices, but logs into the target device using SSH or NETCONF.