644-906...Cisco and understand the nature of the Cisco IOS XR exam. Our team of experts has composed this Cisco 644-906 exam preparation guide to provide the overview about Cisco Implementing

644-906

Implementing and Maintaining Cisco

Technologies Using IOS XR

NWExam.com

Exam Summary – Syllabus – Questions

SUCCESS GUIDE TO CISCO CERTIFICATION

644-906 Sample Questions and Exam Summary ____________________________________________________________________________________

____________________________________________________________________________________ 644-906- IOS XR pg. 1

Table of Contents Introduction to 644-906 Exam on Implementing and Maintaining Cisco

Technologies Using IOS XR ............................................................................. 2

Cisco 644-906 Certification Details: ............................................................. 2

Cisco 644-906 Exam Syllabus: ...................................................................... 3

644-906 Sample Questions: ....................................................................... 11

Answers to 644-906 Exam Questions: ........................................................ 12


____________________________________________________________________________________ 644-906- IOS XR pg. 2

Introduction to 644-906 Exam on Implementing

and Maintaining Cisco Technologies Using IOS

XR A great way to start the Cisco IOS XR Specialist (IMTXR) preparation is to begin by properly appreciating the role that syllabus and study guide play in the Cisco 644-906

certification exam. This study guide is an instrument to get you on the same page with Cisco and understand the nature of the Cisco IOS XR exam.

Our team of experts has composed this Cisco 644-906 exam preparation guide to provide the overview about Cisco Implementing and Maintaining Cisco Technologies Using IOS XR exam, study material, sample questions, practice exam and ways to interpret the

exam objectives to help you assess your readiness for the Cisco IMTXR exam by identifying prerequisite areas of knowledge. We recommend you to refer the simulation questions and practice test listed in this guide to determine what type of questions will

be asked and the level of difficulty that could be tested in the Cisco IOS XR certification exam.

Cisco 644-906 Certification Details:

Exam Name Implementing and Maintaining Cisco Technologies Using IOS

XR

Exam Number 644-906 IMTXR

Exam Price $300 USD

Duration 75 minutes

Number of Questions 55-65

Passing Score Variable (750-850 / 1000 Approx.)

Recommended Training Implementing and Maintaining Cisco Technologies Using IOS

XR (IMTXR)

Exam Registration PEARSON VUE

Sample Questions Cisco 644-906 Sample Questions

Practice Exam Cisco IOS XR Specialist Practice Test

http://tools.cisco.com/GlobalLearningLocator/courseDetails.do?actionType=executeCourseDetail&courseID=5789

http://tools.cisco.com/GlobalLearningLocator/courseDetails.do?actionType=executeCourseDetail&courseID=5789

http://www.vue.com/cisco/

https://www.nwexam.com/cisco/cisco-644-906-certification-exam-sample-questions-and-answers

https://www.nwexam.com/cisco/644-906-ios-xr-imtxr


____________________________________________________________________________________ 644-906- IOS XR pg. 3

Cisco 644-906 Exam Syllabus:

Section Weight Objectives

Platform 21%

1 Power

a) Recommend PDU as a function of facility

b) Install appropriate PDU for chassis

c) Monitor system power level

d) Show power alarm values

2 Environmental

a) Recommend environmental levels for system installation

b) Verify system-detected environment is within tolerance levels

c) Show environmental alarm values

d) Clear environmental alarm

e) Gather system envinronmental output

f) Recommend rack space requirements

g) Use proper grounding for installation

h) Describe CRS air-flow

i) Describe Cisco ASR 9000 air flow

3 Physical Architecture

a) Identify CRS switch fabric

b) Identfy components of CRS fabric

c) Identify MSC

d) Identify PLIM

e) Identify RP CRS/ASR9000

f) Identify management interface

g) Identify cable management h) Differentiate between single and multi-chassis

i) Identify ASR9000 line cards

j) Identify ASR9000 RSP

k) Identify ASR9000 PDU

l) Identify ASR9000 SIP-700/SPA

m) Identify CRS SIP/SPA

n) Identify CRS chassis

o) Identify ASR9000 chassis

p) Describe ASR9000 fabric

4 Inventory

a) Show card status via show platform

b) Show cards via show diags

c) Show inventory of the system

d) Differentiate between admin versus executive plane for show platform

5 Environmental (Merge?) a) Show power usage

b) Show fan status

c) Diff between admin vs exec plane for show platform


____________________________________________________________________________________ 644-906- IOS XR pg. 4


6 Firmware

a) Undertanding what is a FPD.PIE

b) Configure Auto FPD

c) Understand what is Parallel FPD

d) Upgrade FPD and ROMMONUpgrade

e) Understand FPD versus ROMMON

f) Upgrading FPDs and ROMMONs

g) Showing current FPD version information

Operating System

19%

1 Install a) Add a PIEs or SMUs

b) Using TFTP, FTP, USB thumbdrive, and hard drive as the

source

c) With Activate flag

d) Using Source flag

e) Using TAR file

2 Licensing

a) Activate PIEs or SMUs

b) Initial or recovery software installation

c) ROMMON Variables

d) Turboboot Mini.VM file

e) Deactivate PIEs or SMUs

f) Remove inactive packages, PIEs, or SMUs

g) Committing the Installation Path

h) Check which packages are active

i) Check which packages are committed

j) Check installation log

k) See what install requests are currently active

l) Understanding security certificate in PIEs and SMUs

3 Packages

a) Understanding types of packages

b) Mini.PIE

c) Mini.VM

d) Optional PIEs

e) SMUs

f) Unstanding IOS-XR versioning and installation restrictions

g) Understand P versus PX images and the hardware they support

4 Two-Stage Commit a) Understand what is Active Config

b) Understand what is Target Config

c) Understand when is a Syntax Check done

d) Understand when is a Semantic Check done

e) Going back to a previous configuration

f) Showing configuration IDs and labels

g) Show configuration history


____________________________________________________________________________________ 644-906- IOS XR pg. 5


h) Loading configuration

i) Committing the configuration

j) Atomic versus best effort

k) With labels and comments

l) Replacing the configuration

m) Using the commit confirm feature

n) Show Config Fail o) Configure interfaces before the physical interface is available

5 Configuration Planes

a) Understand what configuration is in the Admin plane

b) Understand what configuration is in the Exec plane

c) Understand differences between owner and non-owner SDR in access to Admin plane and Exec plane

d) Understand the default VRF

6 Task-Based Authorization

a) Assigning user privilege to root-system

b) Assigning user privilege to root-lr c) Assigning user privilege to cisco-support

d) Understand between admin user versus exec username

e) Understanding how task based authorization work

7 Process

a) How to perform process restart b) How to check processes like state, no. of restarts, job id,

pid, tid

c) Show where certain processes are running

d) How to find a blocked process

e) Check how much CPU a process is using

8 LPTS

a) Understand what LPTS is

b) Understand about LPTS Policer c) How to use Show LPTS Commands

d) Show policer values and drop counts in LPTS

9 Memory

a) How to look at the memory utilization on the route processor b) How to look at the memory utilization on the line card

c) Understand protected memory space versus shared memory and which area uses it d) Check how much memory a process is using

10 Support a) How to use Show Tech Support commands


____________________________________________________________________________________ 644-906- IOS XR pg. 6


b) Core file configuration locatioin including hard drive and FTP

c) Debug commands and with ACL filtering

d) Locate core files and moving them to a server

11 Parser (interacting with)

a)Using the parser with pipe, include, exclude, begin, regex

12 EEM

a) Base assumption of EEM knowledge - understand what is

possible and not possible

Control Plane 21%

1 Configuring OSPF

a) Configure interfaces to be part of the backbone area

b) Configure additional interfaces to be part of non-backbone area

c) Configure non-default metric on some interfaces

d) Configure neighbor logging so adjacency changes can be monitored

2 Verify OSPF

a) Determine status of OSPF interfaces

b) Determine status of neighbors

c) Display OSPF database and determine which links are present

3 Configure ISIS

a) Configure the ISIS NET

b) Enable ISIS for ipv4 unicast routing

c) Configure interfaces for ISIS routing

d) Enable ISIS for ipv6 unicast routing

e) Enable some but not all of the ipv4 enabled interfaces for ipv6 routing

4 Verify ISIS

a) Determine status if interfaces configured for ISIS

b) Determine the status of the routing adjacencies

c) Display the ipv4 unicast route table

d) Turn and debugging for ISIS adjacencies and explain the information shown

e) Display the topologies for IPv4 and IPv6. Why are they different?

5 Add Static Routes

a) Configure static routes for IPv4 unicast in the global table

b) Configure static routes in for IPv4 unicast in two different

VRFs

6 Configure BGP

a) Configure an autonomous system number for BGP to use


____________________________________________________________________________________ 644-906- IOS XR pg. 7


b) Configure BGP to support IPv4 routing

c) Configure BGP to support IPv6 routing

d) Configure iBGP neighbors with the typical configuration to

use loopback addresses for peering: e) Use neighbor-groups for identical configuration sections on multiple peers

f) Configure one iBGP neighbor to exchange both IPv4 and IPv6 prefixes over an IPv4 session

g) Configure one iBGP neighbor as an IPv6-only neighbor

with IPv6 peer addresses

h) Configure eBGP neighbors for IPv4 routing

i) Configure a simple pass_all policy for those eBGP

neighbors

j) Add VPNv4 capability to one iBGP peer k) Add two VRFs into BGP and redistribute static routes into

BGP for VPNv4

l) Configure one iBGP peer to support 6PE type functionality by adding address-familiy IPv6 labeled-unicast

7 Verify BGP

a) Display the peer summary status for IPv4 and IPv6

b) Display the IPv4 BGP table

c) Display a specific entry and explain AS path and next-hop information

d) Determine how much memory the BGP process uses

8 Understanding RPL Concepts

a) Configure RPL

b) Define an AS-set for use in RPL

c) Create a route policy that checks for an AS from the AS-

set and adds a community for matching routes

d) Create a route-policy that uses an inline prefix-set and changes the local preference when a match is found

e) Create a route policy that adds a community where the community is used as a parameter when the policy is called

9 Verify RPL

a) Verify that communities are added as expected

b) Execute a show bgp… command using a route-policy to

modify the output. Compare to regular show command.

10 MPLS LDP

a) Configure router to run LDP

b) Configure router to log neighbor events

c) Enable LDP on interfaces

d) Execute show command to verify status of LDP neighbors

11 MPLS TE

a) Configure OSPF to support traffic engineering extensions


____________________________________________________________________________________ 644-906- IOS XR pg. 8


b) Enable RSVP on interfaces

c) Create an MPLS TE tunnel with two different path options: d) First path explicit

e) Second path dynamic

12 Execute Show Command to Determine Tunnel Status at

Tunnel Head

a) Execute show command to determine tunnel midpoints traversing the router

13 Configure IP Multicast a) Configure PIM-SM, PIM-SSM, PIM-SSM range

b) Configure static-RP, Auto-RP, and BSR for PIM-SM

c) Confiigure Multicast NSF

d) Configure Multicast VPN

e) Configure MSDP for interconnecting PIM-SM domains

f) Configure MoFRR

g) Configure P2MP-TE for IP Multicast

Data Plane 20%

1 General Forwarding

a) Understand and monitor interface counters

b) Clear interface counters

c) Modify interface counter load interval d) Understand the flow of packets through a router

e) Describe the difference in processing of transit packets versus locally destined packets

f) Understand the information stored in a forwarding table

entry

g) Troubleshoot packet drops

2 Access Control Lists (ACLs)

a) Implement ACLs to filter traffic on an interface

b) Monitor ACL counters

c) Modify an existing applied ACL

d) Apply ACLs in debug commands

e) Resequence an ACL

3 Quality of Service (QoS) a) Implement a basic Quality of Service configuration

b) Monitor Quality of Service statistics and behaviors

c) Modify an existing QoS configuration

d) What is the difference with QoS on IOS XR

4 NetFlow

a) Describe NetFlow capabilities in IOS XR

b) Implement NetFlow packet sampling

c) Verify record export d) Monitor the NetFlow cache

5 Unicast Reverse Path Forwarding (uRPF)


____________________________________________________________________________________ 644-906- IOS XR pg. 9


a) Implement uRPF on an interface

b) Verify uRPF behavior

6 Interface IP addresses

a) Configure IPv4 addresses on an interface

b) Configure IPv6 addresses on an interface

c) Resolve duplicate IP subnets configured on the router

7 IP Multicast a) Describe Multicast forwarding on XR platforms (egress

and fabric replication, etc.) b) Monitor IP Multicast traffic

c) Troubleshoot IP Multicast (RPF, mrib, mfib, olist, etc.)

Management Plane

19%

1 Implementing SNMP on Cisco IOS-XR

a) Configuring SNMP (v1, v2c, v3) - Does everyone use

SNMPv3?

b) Configuring SNMP trap notifications

c) Configuring SNMP views, SDRowner and Lrowner

d) Configuring SNMP ifIndex persistence

e) Verify SNMP configuration - e.g. using snmpget or snmpwalk

2 Implementing Logging Services on Cisco IOS-XR

a) Configuring logging buffer

b) Configuring syslog server host as logging destination

c) Configuring terminals for logging display (term mon) d) Configuring logging facility

e) Configuring local logging device and archiving

f) Monitoring logging buffer and filtering messages

3 Implementing Physical and Virtual Terminals

a) Configuring line templates, vty pools

b) Configuring exec timeout

c) Securing vty line and vty access

d) Verify vty access-group configuration

4 Implementing SSH Access on Cisco IOS-XR

a) Configuring SSH server (including crypto key generation) b) SSH client usage

c) Verify SSH configuration

5 Implementing Telnet Access on Cisco IOS-XR

a) Configuring telnet server on IOS-XR

6 Implementing XML Management on Cisco IOS-XR

a) Describe XML management on IOS-XR

b) Configuring XML agent on IOS-XR

c) Configuring VRF access for XML agent on IOS-XR


____________________________________________________________________________________ 644-906- IOS XR pg. 10


7 Implementing TACACS+ Authentication, Authorization and Accounting

a) Configuring AAA Authentication - Using TACACS+ and

local as fallback

b) Confguring AAA Command Authorization - Using TACACS+ and local as fallback

c) Configuring AAA Command Accounting

d) Implementing TACACS+ - Assigning task groups and privileges

e) Verify AAA permissions upon command failure (i.e. debug aaa)

8 Configuring CDP on Cisco IOS-XR

a) Enable CDP on IOS-XR

b) Monitor CDP neighbors and parameters

9 Implementing Management Plane Protection (MPP) on Cisco IOS-XR

a) Configuring MPP to restrict access from specific IP Addresses and protocols

b) Configuring MPP to restrict access for out-of-band

interface

10 Implementing NTP on Cisco IOS-XR

a) Configuring NTP server b) Configuring NTP peer c) Securing NTP configurations (NTP access groups)

d) Verifying NTP status

11 Implementing SDRs on IOS-XR

a) Understand SDR

b) Describe DSC

c) Assigning SDR access priviledges

d) Creating SDRs, adding nodes to non-owner SDRs

e) Creating username and passwords for non-owner SDRs

f) Rebooting non-owner SDRs

12 Chassis and Hardware Management a) Displaying installed modules, status of modules

b) Displaying environmental status (fan, power, etc) c) Enabling and disabling power to a specific line card or module

d) Reloading line card or module

e) Displaying chassis and module serial numbers

f) Reloading RP

g) Reloading entire chassis

h) Troubleshoot reason why PLIM/MSC is not booting up

13 Implementing EEM on Cisco IOS-XR


____________________________________________________________________________________ 644-906- IOS XR pg. 11

644-906 Sample Questions: 01. How many stages of switching are there on a Cisco ASR 9000 Series Router switch fabric?

a) one

b) three

c) four

d) eight

02. Where are client interfaces terminated on the Cisco CRS-3?

a) the modular services card

b) the physical layer interface module(s) c) the switch fabric interface terminator

d) the Service Processor 40

e) the Service Processor 140

03. Which Cisco IOS XR command sequence will load a specific configuration?

a) (config)#load disk0:name.cfg

b) #copy disk0:name.cfg running-confirguration

c) #copy tftp://255.255.255.255/name.cfg

d) #load commit changes <name>

e) (config)#load commit <name>

04. In Cisco IOS XR platforms, IP multicast packets are replicated on which two components?

(Choose two.) a) switch fabric

b) ingress line card

c) egress line card

d) multicast forwarding ASIC

05. Which component is shared between different SDRs?

a) route processor (RP) b) line card

c) modular service card (MSC) d) switch fabric card (SFC) e) distributed route processor (DRP)

06. What are the three potential use cases of NetFlow in an actual network deployment?

(Choose three.)

a) identifying the traffic source and destination for optimizing peering and transit links

b) providing the network telemetry for identifying and mitigating DDoS attacks

c) providing traffic traces that are comparable to what is provided by a packet sniffer and RMON

d) providing a means for traffic accounting and billing for customers

e) providing deep application inspections and controls


____________________________________________________________________________________ 644-906- IOS XR pg. 12

07. What is the main function of LPTS?

a) filter routing updates

b) maintain the Internal Forwarding Information Base (IFIB)

c) classify transit packets

d) guarantee reliable transport service for network management requests

08. Which command will correctly deactivate asr9k-mpls-p-4.1.0?

a) RP/0/RSP0/CPU0:P1 (admin)#install remove disk0:asr9k-mpls-p-4.1.0

b) RP/0/RSP0/CPU0:P1 (config)#install deactivate smu location disk0:

c) RP/0/RSP0/CPU0:P1 (admin-config)#deactivate disk0:asr9k-mpls-p-4.1.0

d) RP/0/RSP0/CPU0:P1 (admin)#install deactivate disk0:asr9k-mpls-p-4.1.0

e) RP/0/RSP0/CPU0:P1 #asr9k-mpls-p-4.1.0 disk0:deactivate sync

09. In which mode can you check the power usage of a chassis?

a) in EXEC mode

b) in admin mode

c) in both EXEC and admin mode

d) in ROMMON mode

e) in environmental mode

10. What is the cell size of the cells that traverse the switch fabric on the Cisco

CRS-3?

a) 128 bytes

b) 136 bytes

c) 144 bytes

d) 200 bytes

e) 288 bytes

Answers to 644-906 Exam Questions:

Question: 01

Answer: a

Question: 02

Answer: b

Question: 03

Answer: a

Question: 04

Answer: a, c

Question: 05

Answer: d

Question: 06

Answer: a, b, d

Question: 07

Answer: b

Question: 08

Answer: d

Question: 09

Answer: b

Question: 10

Answer: b

Note: If you find any typo or data entry error in these sample questions, we request you to update us by commenting on this page or write an email on [email protected]

644-906...Cisco and understand the nature of the Cisco IOS XR exam. Our team of experts has composed this Cisco 644-906 exam preparation guide to provide the overview about Cisco Implementing

Documents