CCNA Vol 2 Part 5 Flashcards
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Questions and Answers

What is the Data Plane in a networking device?

The tasks that a networking device does to forward a message. It is sometimes called the forwarding plane.

What are some actions the forwarding plane carries out? (Select all that apply)

  • Adding or removing 802.1Q headers (correct)
  • Creating routing tables
  • Matching an IP packet's destination address to routing tables (correct)
  • De-encapsulation and re-encapsulating a packet (correct)

    • What is the control plane in a networking device?

    The control plane refers to any action that controls the data plane. Mostly this has to do with creating tables that control the data plane.

    What is the management plane in a networking device?

    <p>The management plane performs overhead work that does not directly affect the data plane such as Telnet and SSH.</p> Signup and view all the answers

    Where does the switching logic physically occur in a switch?

    <p>Within the Application Specific Integrated Circuit (ASIC).</p> Signup and view all the answers

    What type of memory does an ASIC use to do a lookup in a MAC address table?

    <p>Ternary Content Addressable Memory (TCAM).</p> Signup and view all the answers

    What is the term for the interface between a network controller and network devices?

    <p>Southbound Interface.</p> Signup and view all the answers

    What is a network controller's Northbound Interface used for?

    <p>It opens the controller so its data and functions can be used by other programs enabling network programmability.</p> Signup and view all the answers

    What are the constraints in a spine and leaf design? (Select all that apply)

    <p>Endpoints connect only to leaf switches</p> Signup and view all the answers

    What is the purpose of Cisco's Digital Network Architecture (DNA) center controller?

    <p>DNA center is the controller for Software Defined Access (SDA) networks.</p> Signup and view all the answers

    What is SDA overlay?

    <p>The mechanisms to create VXLAN tunnels between SDA switches, which are then used to transport traffic from one fabric endpoint to another endpoint.</p> Signup and view all the answers

    What is SDA underlay?

    <p>The network of devices and connections that provide IP connectivity to all nodes in the fabric.</p> Signup and view all the answers

    What is SDA fabric?

    <p>The combination of overlay and underlay, which together provide all features to deliver data across the network.</p> Signup and view all the answers

    What is an SDA fabric edge node?

    <p>A switch that connects to endpoint devices.</p> Signup and view all the answers

    What is an SDA fabric border switch?

    <p>A switch that connects to devices outside the SDA's control.</p> Signup and view all the answers

    What is an SDA fabric control node?

    <p>A switch that performs special control plane functions for the underlay.</p> Signup and view all the answers

    What is a routed access layer?

    <p>An access layer that uses all layer 3 switches.</p> Signup and view all the answers

    What is the biggest difference between Cisco's Prime Infrastructure and Cisco's DNA center?

    <p>DNA center supports SDA.</p> Signup and view all the answers

    What are some attributes of REST APIs? (Select all that apply)

    <p>Clear statement of cacheable/uncacheable</p> Signup and view all the answers

    What are the CRUD actions in regard to APIs? (Select all that apply)

    <p>Read</p> Signup and view all the answers

    What is the REST term for create?

    <p>POST.</p> Signup and view all the answers

    What is the REST term for read?

    <p>GET.</p> Signup and view all the answers

    What is the REST term for update? (Select all that apply)

    <p>PUT</p> Signup and view all the answers

    What is the REST term for delete?

    <p>DELETE.</p> Signup and view all the answers

    What is configuration drift?

    <p>When the configuration drifts away from the intended configuration over time.</p> Signup and view all the answers

    How can configuration management tools help prevent configuration drift?

    <p>They monitor device configuration to discover when the device configuration differs from the intended ideal configuration.</p> Signup and view all the answers

    What is an Ansible playbook?

    <p>These files provide actions and logic about what Ansible should do.</p> Signup and view all the answers

    What is an Ansible inventory?

    <p>These files provide hostnames along with information about each device.</p> Signup and view all the answers

    What is an Ansible template?

    <p>Templates represent a device's configuration but with variables.</p> Signup and view all the answers

    What is an Ansible variable?

    <p>A file with a list of variables that Ansible will substitute into templates.</p> Signup and view all the answers

    What is a Puppet manifest?

    <p>Used to define the configuration state of a device.</p> Signup and view all the answers

    What are Puppet Resource, Class, and Modules?

    <p>They are components of the manifest. The largest component, the module, contains classes, which in turn contain resources.</p> Signup and view all the answers

    What are Puppet templates?

    <p>They allow Puppet to generate manifests by substituting variables into the template.</p> Signup and view all the answers

    What is a Chef resource?

    <p>The configuration objects whose state is managed by Chef.</p> Signup and view all the answers

    What is a Chef recipe?

    <p>The Chef logic applied to resources to determine when, how, and whether to act against resources.</p> Signup and view all the answers

    What is a Chef cookbook?

    <p>A set of recipes about the same kinds of work grouped together for easier management and sharing.</p> Signup and view all the answers

    What is a Chef Runlist?

    <p>An ordered list of recipes that should be run against a given device.</p> Signup and view all the answers

    Does Ansible use a push or pull model?

    <p>False</p> Signup and view all the answers

    Does Puppet use a push or pull model?

    <p>False</p> Signup and view all the answers

    Does Chef use a push or pull model?

    <p>False</p> Signup and view all the answers

    Study Notes

    Networking Device Planes

    • Data Plane: Responsible for forwarding messages; also known as forwarding plane.
    • Control Plane: Manages the data plane, primarily through creating control tables.
    • Management Plane: Performs administrative tasks like telnet and SSH that do not directly influence the data plane.

    Switching and Memory

    • Switching Logic: Physically implemented within Application Specific Integrated Circuits (ASICs).
    • MAC Address Lookup: Uses Ternary Content Addressable Memory (TCAM) for fast lookups.

    Interfaces for Network Controllers

    • Southbound Interface: Connects network controllers to network devices.
    • Northbound Interface: Facilitates communication between the network controller and other applications, enabling programmability.

    Spine and Leaf Architecture

    • Constraints:
      • All leaf switches must connect to every spine switch.
      • No direct connections between leaf switches or spine switches.
      • Endpoints connect exclusively to leaf switches.

    Cisco's Digital Network Architecture (DNA)

    • DNA Center: Controls Software Defined Access (SDA) networks.
    • SDA Overlay: Involves mechanisms for creating VXLAN tunnels for traffic transport.
    • SDA Underlay: Consists of devices that provide IP connectivity within the fabric.
    • SDA Fabric: Combines overlay and underlay to facilitate data delivery across the network.

    SDA Node Types

    • Fabric Edge Node: Connects to endpoint devices.
    • Fabric Border Switch: Connects devices external to the SDA environment.
    • Fabric Control Node: Handles special control functions in the underlay.

    Network Layers

    • Routed Access Layer: Comprises only layer 3 switches.
    • Difference Between Prime Infrastructure and DNA Center: DNA Center specifically supports SDA.

    API Attributes

    • REST API Features: Includes client/server architecture, statelessness, cacheability, uniform interfaces, layered design, and optional code execution on demand.
    • CRUD Operations:
      • Create: POST
      • Read: GET
      • Update: PATCH, PUT
      • Delete: DELETE

    Configuration Management

    • Configuration Drift: Occurs when the actual configuration deviates from the intended setup.
    • Management Tools: Help prevent drift by monitoring device settings against intended configurations.

    Ansible Overview

    • Playbook: Contains instructions for Ansible's actions.
    • Inventory: Lists hostnames and device information.
    • Template: Represents device configurations with variables.
    • Variable: A file defining variables for use in templates.

    Puppet Overview

    • Manifest: Specifies the desired configuration state of devices.
    • Resources, Classes, and Modules: Components of manifests; modules house classes, which contain resources.
    • Templates: Allow for the dynamic generation of manifests through variable substitution.

    Chef Overview

    • Resource: Configuration objects managed by Chef.
    • Recipe: Logic applied to resources for management.
    • Cookbook: Collection of related recipes for easier management.
    • Runlist: Ordered sequence of recipes for execution on devices.

    Push vs Pull Model

    • Ansible: Operates on a push model; configurations are pushed to devices.
    • Puppet: Functions on a pull model; devices pull configurations from a central server.
    • Chef: Also utilizes a pull model for configuration management.

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    Description

    Test your knowledge with these flashcards covering essential concepts from CCNA Volume 2, focusing on the Data Plane and forwarding actions within networking devices. This quiz will help reinforce your understanding of networking fundamentals in preparation for certification. Perfect for students and professionals alike.

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