IDENTIFIED GAPS Flashcards by Pedro Ivo Silva

What is RP in multicast?

Rendezvous Point

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Uses pull model (a multicast mode)

PIM Sparse mode (PIM-SM)

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Uses push model

PIM Dense mode (PIM-DM)

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When RP is needed in Sparse mode?

To start new sessions with sources and receivers

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Is the root of PIM-SM distribution tree

RP (Rendezvous Point)

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send join messages toward a multicast source SPT

Rendezvous Point (RP)

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FIB is populated…

based on RIB content

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IGMP Querier Election

Lowest IP address

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accepts LISP encapsulated map requests

Map resolver

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LISP Proxy ETR

receives traffic from LISP sites and sends it to non-LISP sites

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[SD-Access] learns of EID prefix mapping entries from an ETR

Map server

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HTTP basic authentication

username and password in an encoded string

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OAuth

authorization through identity provider

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secure vault

public API resource

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token-based authentication

API-dependent secret

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RLOC

Routing Locator

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Performs remote software upgrades for WAN Edge, vSmart and vBond.

vManage

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[SD-Access] Device is responsible for hosting the anycast gateway?

Fabrice Edge Node

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Ansible is agentless or agent-based?

Agentless

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Terraform is agentless or agent-based?

Agentless

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Chef is agentless or agent-based?

Agent-based

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Procedural

Chef

Ansible

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Declarative

Terraform

SaltStack

Puppet

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QoS component that alters a packet to change the way that traffic is treated in the network

Marking

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802.1s

MSTP (Multiple Spanning Tree Protocol)

HTTP response code of 405

Method Not Allowed

Transports data plane traffic across a Cisco SD-WAN

vEdge

[SD-Access] decapsulates messages and forwards them to the map server

Map Resolver

Which python code parses the response and prints “18:32:21.474 UTC sun Mar 10 2019?

`[‘result’][‘body’][‘simple_time’]`

HTTP response code of 400

Accept Header

Which two Cisco SD-WAN components exchange OMP information? (choose two)

WAN Edge vSmart

transports data plane traffic across a Cisco SD-WAN

vEdge

HTTP response code of 504

**The response timed out** based on a configured interval

[SD-Access] Sends periodic map-register messages to all its configured map servers

ETR (egress tunnel routers)

[SD-WAN] Distribute security information for tunnel establishment between vEdge router

vSmart

[SD-Access] Responsible for publishing EID-to-RLOC mappings for a site

ETR

[SD-Access] Receives and de-encapsulates LISP traffic for endpoints

ETR

Agentless

+ Ansible + Terraform (Puppet can be both, agent or agentless)

Agent-based

+ Chef + SaltStack (Puppet can be both, agent or agentless)

5xx Status codes

Server problem

4xx Status codes

Client or user

[BGP] Attribute only relevant to the local router

Weight

[BGP] Attribute that routers exchange inside same AS number

Local Preference

DTSP

**Declarative** Terraform Saltstack Pupper

PCA

**Procedural** Chef Ansible

Records MAC address, port of arrival, vlan and timestamps

MAC Adress Table

Used to build IP Routing Tables

TCAM Table

Stores ACL, QoS and other upper layer informations

TCAM Table

Used to make layer 2 fowarding decisions

MAC Address Table

Used to make layer 3 address lookups

TCAM Table

Signal-to-Noise Ratio

Receives and de-encapsulates LISP traffic for endpoints

ETR

Receives and de-encapsulates map-requests

Map Resolver

[Routing Protocol] Maintains alternative loop-free backup via the feasible successors

EIGRP

[SD-Access] How are map-register messages sent in a LISP deployment?

egress tunnel routers to map servers

[SD-Access] How are map-register are sent in a LISP deployment?

ETR > Map Server

[SD-Access] map-requests

Map Resolver > Map Server

[SD-Access] LISP Traffic 4 endpoints

ETR

[Routing Protocol] Summary can be interface based

EIGRP

[Routing Protocol] Route summary is NOT interface based

OSPF

EIGRP supported unequal-cost paths

two statements about IP SLA

It uses active traffic monitoring It is Layer 2 transport-independent

OSPF EXSTART/EXCHANGE state

Mismatched MTU size

VNID definition

Maintain Layer 2 isolation between segments in a VXLAN environment.

[SD-Access] publishing EID-to-RLOC

ETR

[SD-Access] finding EID-to-RLOC

ITR

Two statements about VRF-lite

- It should be used when a customer’s router is connected to an ISP over OSPF - It can support multiple customers on a single switch

``` ip vrf RED rd 1:1 import ipv4 unicast __________ rm-to-red ``` Complete the above statement

``` ip vrf RED rd 1:1 import ipv4 unicast map rm-to-red ``` "map" this is the correct answer

GRE between a headend router and a remote router

**The remote router initiates the tunnel** connection

M A Saquery

- **M**andatory - **A**ssociation-comeback - **Sa**query-retry-time