Question 1

What causes multicast traffic to permanently stay on the shared tree and not switch to the source tree?

Accepted Answer

A)  SSM range is being used 
B)  The RP announcements are being filtered 
C)  The SPT threshold is set to infinity 
D)  The RP IP address is configured incorrectly 
A)  SSM range is being used 
B)  The RP announcements are being filtered 
C)  The SPT threshold is set to infinity 
D)  The RP IP address is configured incorrectly

Question 2

Refer to the exhibit. Assume all other configurations are correct and the network is otherwise operating normally. Which conclusion can you draw about the neighbor relationship between routers R1 and R2?

Accepted Answer

A)  The neighbor relationship is up. 
B)  The neighbor relationship will be up only if the two devices have activated the correct neighbor relationships under the IPv4 address family. 
C)  The neighbor is down because the local-as value for R2 is missing in the R1 neighbor statement. The neighbor is down because the local-as value for R2 is missing in the R1 neighbor statement. 
D)  The neighbor relationship is down because R1 believes R2 is in AS 65012. 
A)  The neighbor relationship is up. 
B)  The neighbor relationship will be up only if the two devices have activated the correct neighbor relationships under the IPv4 address family. 
C)  The neighbor is down because the local-as value for R2 is missing in the R1 neighbor statement. The neighbor is down because the local-as value for R2 is missing in the R1 neighbor statement. 
D)  The neighbor relationship is down because R1 believes R2 is in AS 65012.

Question 3

Refer to the exhibit. An engineer configured multicast routing on client's network. What is the effect of this multicast implementation?

Accepted Answer

A)  R2 is unable to share information because the ip pim autorp listener command is missing R2 is unable to share information because the ip pim autorp listener command is missing 
B)  R1 floods information about R2 throughout the multicast domain 
C)  R2 floods information about R1 throughout the multicast domain 
D)  R2 is elected as the RP for this domain 
A)  R2 is unable to share information because the ip pim autorp listener command is missing R2 is unable to share information because the ip pim autorp listener command is missing 
B)  R1 floods information about R2 throughout the multicast domain 
C)  R2 floods information about R1 throughout the multicast domain 
D)  R2 is elected as the RP for this domain

Question 4

Which two uses of the YANG data modeling language are true? (Choose two.)

Accepted Answer

A)  It can be used to model the configuration used by NETCONF operations. 
B)  It can be used to access a device by HTTP. 
C)  It can be used to replace the OSI model for troubleshooting. 
D)  It can be used to shape state data of network elements. 
E)  It can be used to replace RESTCONF as a mechanism to install and manipulate configuration. 
A)  It can be used to model the configuration used by NETCONF operations. 
B)  It can be used to access a device by HTTP. 
C)  It can be used to replace the OSI model for troubleshooting. 
D)  It can be used to shape state data of network elements. 
E)  It can be used to replace RESTCONF as a mechanism to install and manipulate configuration.

Question 5

Refer to the exhibit. Which show command should be implemented to display per-interface statistics about uRPF drops and suppressed drops?

Accepted Answer

A)  show cef interface 
B)  show ip traffic 
C)  show ip interface 
D)  show ip interface brief 
A)  show cef interface 
B)  show ip traffic 
C)  show ip interface 
D)  show ip interface brief

Question 6

Refer to the exhibit. If router A is the RP, which PIM mode can you configure so that devices will send multicast traffic toward the RP?

Accepted Answer

A)  PIM-SM 
B)  BIDIR-PIM 
C)  PIM-SSM 
D)  PIM-DM 
A)  PIM-SM 
B)  BIDIR-PIM 
C)  PIM-SSM 
D)  PIM-DM

Question 7

You are writing an RPL script to accept routes only from certain autonomous systems. Consider this code: RP/0/RP0/CPU0:router(config-rpl)# if as-path in (ios-regex '.*77$') RP/0/RP0/CPU0:router(config-rpl-if)# pass RP/0/RP0/CPU0:router(config-rpl-if)# endif If you apply this code to BGP filters, which effect does the code have on your router?

Accepted Answer

A)  denies routes from AS 7070 
B)  allows routes from AS 7077 
C)  denies routes from AS 7007 
D)  allows routes from AS 770 
A)  denies routes from AS 7070 
B)  allows routes from AS 7077 
C)  denies routes from AS 7007 
D)  allows routes from AS 770

Question 8

Why do packet loops occur during the configuration of BIDIR-PIM?

Accepted Answer

A)  The network does not support BIDIR-PIM. 
B)  The network is partially upgraded to support BIDIR-PIM. 
C)  The router has not been configured to advertise itself. 
D)  No interface for carrying traffic for multicast groups has been configured. 
A)  The network does not support BIDIR-PIM. 
B)  The network is partially upgraded to support BIDIR-PIM. 
C)  The router has not been configured to advertise itself. 
D)  No interface for carrying traffic for multicast groups has been configured.

Question 9

Which two tasks must you perform when you implement LDP NSF on your network? (Choose two.)

Accepted Answer

A)  Enable NSF for BGP. 
B)  Implement direct connections for LDP peers. 
C)  Enable NSF for EIGRP. 
D)  Disable Cisco Express Forwarding. 
E)  Enable NSF for the link-state routing protocol that is in use on the network. 
A)  Enable NSF for BGP. 
B)  Implement direct connections for LDP peers. 
C)  Enable NSF for EIGRP. 
D)  Disable Cisco Express Forwarding. 
E)  Enable NSF for the link-state routing protocol that is in use on the network.

Question 10

In an MPLS network, which protocol can be used to distribute a Segment Prefix?

Accepted Answer

A)  LDP 
B)  EIGRP 
C)  OSPF 
D)  RSVP-TE 
A)  LDP 
B)  EIGRP 
C)  OSPF 
D)  RSVP-TE

Question 11

Refer to the exhibit. A network engineer is implementing a BGP routing policy. Which effect of this configuration is true?

Accepted Answer

A)  All traffic that matches acl10 is allowed without any change to its local-preference. 
B)  All traffic that matches acl10 is dropped without any change to its local-preference. 
C)  If traffic matches acl10, it is allowed and its local-preference is set to 300. 
D)  All traffic is assigned a local-preference of 300 regardless of its destination. 
A)  All traffic that matches acl10 is allowed without any change to its local-preference. 
B)  All traffic that matches acl10 is dropped without any change to its local-preference. 
C)  If traffic matches acl10, it is allowed and its local-preference is set to 300. 
D)  All traffic is assigned a local-preference of 300 regardless of its destination.

Question 12

How much must the MTU be increased when configuring the 802.1q VLAN tag?

Accepted Answer

A)  2 bytes 
B)  4 bytes 
C)  8 bytes 
D)  12 bytes 
A)  2 bytes 
B)  4 bytes 
C)  8 bytes 
D)  12 bytes

Question 13

How can a network administrator secure rest APIs?

Accepted Answer

A)  They can have a general administrator login for multiple users to access that has command entries logged. 
B)  They can authenticate user sessions and provide the appropriate privilege level. 
C)  They can ensure that user sessions are authenticated using TACACS+ only. 
D)  They can allow read and write privileges to all users. 
A)  They can have a general administrator login for multiple users to access that has command entries logged. 
B)  They can authenticate user sessions and provide the appropriate privilege level. 
C)  They can ensure that user sessions are authenticated using TACACS+ only. 
D)  They can allow read and write privileges to all users.

Question 14

Refer to the exhibit. An engineer is configuring two routers to support MPLS LDP sessions between them. The R1 configuration is complete, and work has started on R2 as shown. Which additional configuration must the engineer apply to R2 to complete the task?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 15

Refer to the exhibit. A network administrator wants to enhance the security for SNMP for this configuration. Which action can the network administrator implement?

Accepted Answer

A)  Add a community string to the existing entry. 
B)  Maintain the configuration but switch to an encrypted password for device access through SSH. 
C)  Re-configure to use SNMPv2 with MD5 authentication. 
D)  Re-configure to use SNMPv3. 
A)  Add a community string to the existing entry. 
B)  Maintain the configuration but switch to an encrypted password for device access through SSH. 
C)  Re-configure to use SNMPv2 with MD5 authentication. 
D)  Re-configure to use SNMPv3.

Question 16

Egress PE NAT is being used via a single centralized router to provide Internet access to L3VPN customers. Which description of the NAT operation is true?

Accepted Answer

A)  The NAT table contains a field to identify the inside VRF of a translation. 
B)  Multiple address pools are needed for the same L3VPN because each site has a separate NAT. 
C)  The different L3VPNs using the Internet access must not have IP overlaps internally. 
D)  Users in different VRFs cannot share the same outside global IP address. 
A)  The NAT table contains a field to identify the inside VRF of a translation. 
B)  Multiple address pools are needed for the same L3VPN because each site has a separate NAT. 
C)  The different L3VPNs using the Internet access must not have IP overlaps internally. 
D)  Users in different VRFs cannot share the same outside global IP address.

Question 17

Refer to the exhibit. Which task completes the configuration?

Accepted Answer

A)  Specify the local-as value in the neighbor statement 
B)  Specify the source interface in the neighbor statement 
C)  Specify the maximum number of prefixes that R1 receives from neighbor 192.168.1.2 
D)  Specify the activate neighbor 192.168.1.2 under the IPv4 address family 
A)  Specify the local-as value in the neighbor statement 
B)  Specify the source interface in the neighbor statement 
C)  Specify the maximum number of prefixes that R1 receives from neighbor 192.168.1.2 
D)  Specify the activate neighbor 192.168.1.2 under the IPv4 address family

Question 18

Refer to the exhibit. Which statement supports QPPB implementation?

Accepted Answer

A)  QPPB policies affect only egress traffic. 
B)  QoS policies rely exclusively on BGP attributes to manipulate traffic. 
C)  QoS policies are identified in the MPLS forwarding table. 
D)  QoS policies use BGP to gain full coverage on the network. 
A)  QPPB policies affect only egress traffic. 
B)  QoS policies rely exclusively on BGP attributes to manipulate traffic. 
C)  QoS policies are identified in the MPLS forwarding table. 
D)  QoS policies use BGP to gain full coverage on the network.

Question 19

What do Ansible and SaltStack have in common?

Accepted Answer

A)  They both have agents running on the client machine. 
B)  They both can be designed with more than one master server. 
C)  They both use DSL configuration language. 
D)  They both use YAML configuration language. 
A)  They both have agents running on the client machine. 
B)  They both can be designed with more than one master server. 
C)  They both use DSL configuration language. 
D)  They both use YAML configuration language.

Question 20

Refer to the exhibit. While troubleshooting the OSPF adjacency between routers R1 and R2, an engineer noticed that both routers are stuck in the EXCHANGE/EXSTART state. What should the engineer fix to solve the ongoing issue?

Accepted Answer

A)  match OSPF network types 
B)  match IPv4 addresses 
C)  match MTU values 
D)  match OSPF areas 
A)  match OSPF network types 
B)  match IPv4 addresses 
C)  match MTU values 
D)  match OSPF areas

Exam 39: Implementing and Operating Cisco Data Center Core Technologies (DCCOR)

What causes multicast traffic to permanently stay on the shared tree and not switch to the source tree?

Refer to the exhibit. Assume all other configurations are correct and the network is otherwise operating normally. Which conclusion can you draw about the neighbor relationship between routers R1 and R2?

Refer to the exhibit. An engineer configured multicast routing on client's network. What is the effect of this multicast implementation?

Which two uses of the YANG data modeling language are true? (Choose two.)

Refer to the exhibit. Which show command should be implemented to display per-interface statistics about uRPF drops and suppressed drops?

Refer to the exhibit. If router A is the RP, which PIM mode can you configure so that devices will send multicast traffic toward the RP?

Why do packet loops occur during the configuration of BIDIR-PIM?

Which two tasks must you perform when you implement LDP NSF on your network? (Choose two.)

In an MPLS network, which protocol can be used to distribute a Segment Prefix?

Refer to the exhibit. A network engineer is implementing a BGP routing policy. Which effect of this configuration is true?

How much must the MTU be increased when configuring the 802.1q VLAN tag?

How can a network administrator secure rest APIs?

Refer to the exhibit. An engineer is configuring two routers to support MPLS LDP sessions between them. The R1 configuration is complete, and work has started on R2 as shown. Which additional configuration must the engineer apply to R2 to complete the task?

Refer to the exhibit. A network administrator wants to enhance the security for SNMP for this configuration. Which action can the network administrator implement?

Egress PE NAT is being used via a single centralized router to provide Internet access to L3VPN customers. Which description of the NAT operation is true?

Refer to the exhibit. Which task completes the configuration?

Refer to the exhibit. Which statement supports QPPB implementation?

What do Ansible and SaltStack have in common?

Refer to the exhibit. While troubleshooting the OSPF adjacency between routers R1 and R2, an engineer noticed that both routers are stuck in the EXCHANGE/EXSTART state. What should the engineer fix to solve the ongoing issue?

Supporting Cisco Data Center System Devices (DCTECH)

Cisco Certified Technician Routing & Switching (RSTECH)

Understanding Cisco Cybersecurity Operations Fundamentals (CBROPS)

Cisco Certified Network Associate (CCNA)

Managing Industrial Networks with Cisco Networking Technologies (IMINS)

DevNet Associate (DEVASC)

Conducting Forensic Analysis and Incident Response Using Cisco CyberOps Technologies (CBRFIR)

Implementing Cisco Enterprise Advanced Routing and Services (ENARSI)

Implementing Cisco SD-WAN Solutions (ENSDWI)

Designing Cisco Enterprise Networks (ENSLD)

Designing Cisco Enterprise Wireless Networks (300-425 ENWLSD)

Implementing Cisco Enterprise Wireless Networks (300-430 ENWLSI)

Automating Cisco Enterprise Solutions (ENAUTO)

Implementing Cisco Service Provider Advanced Routing Solutions (SPRI)

Implementing Cisco Service Provider VPN Services (SPVI)

Designing Cisco Data Center Infrastructure (DCID)

Troubleshooting Cisco Data Center Infrastructure (DCIT)

Implementing Cisco Application Centric Infrastructure (DCACI)

Configuring Cisco MDS 9000 Series Switches (DCSAN)

Implementing Cisco Application Centric Infrastructure - Advanced

Automating Cisco Data Center Solutions (DCAUTO)

Securing Networks with Cisco Firepower (300-710 SNCF)

Implementing and Configuring Cisco Identity Services Engine (300-715 SISE)

Securing Email with Cisco Email Security Appliance (300-720 SESA)

Securing the Web with Cisco Web Security Appliance (300-725 SWSA)

Implementing Secure Solutions with Virtual Private Networks (SVPN 300-730)

Automating Cisco Security Solutions (SAUTO)

Implementing Cisco Collaboration Applications (CLICA)

Implementing Cisco Advanced Call Control and Mobility Services (CLASSM)

Implementing Cisco Collaboration Cloud and Edge Solutions

Implementing Cisco Collaboration Conferencing

Automating Cisco Collaboration Solutions (CLAUTO)

Implementing DevOps Solutions and Practices using Cisco Platforms (DEVOPS)

Developing Solutions Using Cisco IoT and Edge Platforms (DEVIOT)

Developing Applications for Cisco Webex and Webex Devices (DEVWBX)

Performing CyberOps Using Core Security Technologies (CBRCOR)

Implementing Cisco Enterprise Network Core Technologies (ENCOR)

Implementing and Operating Cisco Service Provider Network Core Technologies (SPCOR)

Implementing and Operating Cisco Security Core Technologies

Implementing Cisco Collaboration Core Technologies (CLCOR)

Developing Applications using Cisco Core Platforms and APIs (DEVCOR)

CCDE Design Written

Deploying Cisco Unified Contact Center Express

Cisco Meraki Solutions Specialist

Securing Cisco Networks with Sourcefire FireAMP Endpoints

Designing Cisco Unified Contact Center Enterprise (UCCED)

Implementing and Supporting Cisco Unified Contact Center Enterprise (UCCEIS)

Cisco Collaboration SaaS Authorization Exam

Cisco Security Architecture for System Engineers

Adopting The Cisco Business Architecture Approach (DTBAA)

Cisco Customer Success Manager (CSM)

Mastering The Cisco Business Architecture Discipline (DTBAD)

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