Refer to the exhibit. Refer to the exhibit. LDP peering between routers R1 and R2 is dropped when the link between R1 and R2 is taken offline. However, LDP peering between R2 and R3 stays up when the link between R2 and R3 is taken offline. Which action allows MPLS traffic forwarding to continue normally if the link between R1 and R2 goes down?

Implement LDP Session Protection on R1.

Enable IGP and LDP Synchronization on R1.

Implement LDP Session Protection on R1.

Enable IGP and LDP Synchronization on R2.

Implement LDP Session Protection on R2.

Refer to the exhibit. Refer to the exhibit. A network administrator implemented MPLS routing between routers R1, R2, R3, and R4. AToM is configured between R1 and R4 to allow Layer 2 traffic from hosts on RA1 and RA2. A targeted MPLS session is established between R1 and R4. Which additional action must the administrator take on all routers so that LDP synchronization occurs between connected LDP sessions?

Disable the MPLS LDP IGP sync holddown.

Configure OSPF or IS-IS as the routing protocol.

Configure EIGRP as the routing protocol using stub areas only.

Enable MPLS LDP sync delay timers.

Refer to the exhibit. Refer to the exhibit. Tier 2 ISP A on AS 653 is connected to two Tier 1 ISPs on AS 321 and AS 51 respectively. The network architect at ISP A is planning traffic flow inside the network to provide predictable network services. Cisco ExpressForwarding is disabled on the edge router. How should the architect implement BGP to direct all traffic via the Tier 1 ISP with next-hop 7.4.5.2?

Implement the BGP routing protocol and run the bgp deterministic-med command.

Implement MP-BGP with a 4-byte AS number with the bgp best path compare-routerid command.

Implement the BGP routing protocol and the maximum-paths 2 configuration.

Implement BGP route-reflector functionality with the bgp always-compare-med configuration.

Which two features describe TI-LFA? (Choose two.)

Unlike RLFA, TI-LFA works without the PQ node and provides double segment failure protection.

TI-LFA leverages the post-convergence path that carries data traffic after a failure.

TI-LFA uses PQ or P and Q nodes on the post-convergence path to compute the backup path.

Post-convergence, TI-LFA considers the next-hop neighbor to calculate the backup repair path.

TI-LFA works with point of local repair when the PQ node supports only LDP capability.

Unlike RLFA, TI-LFA works without the PQ node and provides double segment failure protection.

TI-LFA leverages the post-convergence path that carries data traffic after a failure.

How does SR policy operate in Segment Routing Traffic Engineering?

An active SR policy installs a BSID-keyed entry in the forwarding table to steer the packets that match the entry to the SR policy SID-list.

An SR policy for color and endpoint is deactivated at the headend as soon as the headend learns a valid candidate path for the policy.

When "invalidation drop" behavior occurs, the SR policy forwarding entry is removed and therouter drops all traffic that is steered into the SR policy.

When a set of SID lists is associated with the SR policy designated path, traffic steering is ECMPbased according to the qualified cost of each SID-list.

An active SR policy installs a BSID-keyed entry in the forwarding table to steer the packets that match the entry to the SR policy SID-list.

Refer to the exhibit. Refer to the exhibit. A network engineer is implementing multicast Source-A to send a multicast stream for Receiver-A, and multicast Source-B to send a multicast stream for Receiver-B. Router RC forwards the IGMP host a report and leaves messages to IP address 192.168.10.1. How must the multicast features be implemented to prevent RB from receiving multicast flooding from Source-A?

Enable ip pim passive on RB interface Ge0/0.

Change the helper-address value to 192.168.10.2 on RC.

Enable ip pim neighbor-filter on RC interface Ge0/0.

Configure PIM-SSM on RB and RC interface Ge 0/0.

Enable ip pim passive on RB interface Ge0/0.

How does an untrusted interface at the boundary of an administrative domain handle incoming packets?

It remarks all values to a CoS of 0.

It forwards only traffic with a DSCP value of 48.

It translates the IP precedence value to the corresponding DSCP value.

It drops all traffic ingressing the network.

Refer to the exhibit. Refer to the exhibit. A network engineer wants to monitor traffic from the application server and send the output to the external monitoring device at 172.16.20.5. Application server traffic should pass through the R1 Eth2/1 interface for further analysis after it is monitored. Which configuration must be applied on the R1 router?

Configure the ip flow monitor FLOW-MONITOR-10 input command on the Ethernet1/0 interface.

Configure the FLOW-MONITOR-20 command.

Configure the flow exporter EXPORTER-10 destination 192.168.20.4 command.

Configure the ip flow monitor FLOW-MONITOR-10 input command on the Ethernet1/0 interface.

Configure the ip flow monitor FLOW-MONITOR-10 output command on the Ethernet 2/1 interface.

An engineering team must implement Unified MPLS to scale an MPLS network. Devices in the core layer use different IGPs, so the team decided to split the network into different areas. The team plans to keep the MPLS services as they are and introduce greater scalability. Which additional action must the engineers take to implement the Unified MPLS?

Configure the ABR routers as route reflectors that redistribute IGP into BGP.

Redistribute the IGP prefixes from one IGP into the other routers to ensure end-to-end LSPs.

Configure the ABR routers as route reflectors that redistribute IGP into BGP.

Redistribute the IGP prefixes into another IGP to ensure end-to-end LSPs.

Move the IGP prefixes into IS-IS as the loopback prefixes of the PE routers to distribute the prefixes to other routers to create end-to-end LSPs.

Refer to the exhibit. Refer to the exhibit. ISP A provides MPLS L3VPN service to customer A with BGP as the external routing protocol. Customer A has just opened a new branch office in London and requested the service provider to implement lossless service between its two offices. The LDP is enabled over the MPLS backbone and label exchange is working normally. Which action must the ISP engineering team take to enable the service?

Configure IGP LDP synchronization

Configure LDP and redistribute the route from EIGRP.

Configure BGP address family VPNv4.

Configure IGP and redistribute the route from BGP.

Configure IGP LDP synchronization

How does Cisco DNA Center enhance network automation?

It allows network administrators to reduce inconsistencies when they deploy and validate network configurations.

It allows network administrators to quickly deploy Cisco Layer 2 devices without requiring STP and broadcast transport.

It allows network administrators to reduce inconsistencies when they deploy and validate network configurations.

It allows network administrators to reduce the number of VRFs in a multi customer environment by automatically implementing a single VLAN per customer.

It allows network administrators to combine voice and data networks into a single topology without manual configuration.

Refer to the exhibit. Refer to the exhibit. A network engineer is implementing multicast services on CPE-1 and CPE-2.CPE-1 must be configured as the preferred IGMP querier for the LAN segment. PIM-SM must be implemented on the LAN interfaces with an IGMP version that supports (*, G) joins only. Which configurations must the engineer implement onCPE-1 and CPE-2?

On CPE-1:interface GigabitEthernet0/1ip address 10.0.12.129 255.255.255.128ip pim sparse-modeip igmp version 2On CPE-2:interface GigabitEthernet0/1ip address 10.0.12.130 255.255.255.128ip pim sparse-modeip igmp version 2

On CPE-1:interface GigabitEthernet0/1ip address 10.0.12.130 255.255.255.128ip pim sparse-modeip igmp version 3On CPE-2:interface GigabitEthernet0/1ip address 10.0.12.129 255.255.255. 128ip pim sparse-modeip igmp version 3

On CPE-1:interface GigabitEthernet0/1ip address 10.0.12.130 255.255.255.128ip pim sparse-modeip igmp version 2On CPE-2:interface GigabitEthernet0/1ip address 10.0.12.129 255.255.255.128ip pim sparse-modeip igmp version 2

On CPE-1:interface GigabitEthernet0/1ip address 10.0.12.129 255.255.255.128ip pim sparse-modeip igmp version 3On CPE-2:interface GigabitEthernet0/1ip address 10.0.12.130 255.255.255.128ip pim sparse-modeip igmp version 3

A new PE router is configured to run OSPF as an IGP with LDP on all interfaces. The engineer is trying to prevent black holes after convergence when the PERSON device loses an LDP session with other PE routers. Which action must the engineer take to implement LDP session protection on a new PE router?

Configure the new PE router with the mpls ldp session protection command and on neighboring routers that connect to this new PE router.

Configure the mpls ldp session protection and mpls label protocol ldp commands on the interfaces on the new PE router that connect to the CENTER routers.

Configure the mpls ldp discovery targeted-hello accept and mpls ldp session protection commands on the interfaces on the new PE router that connect to the CE routers.

Configure the new PE router with the mpls ldp session protection command and on neighboring routers that connect to this new PE router.

Configure the new PE router with the mpls ldp session protection command on interfaces with directly connected neighbors.

What is the function of Cisco NFV infrastructure platform?

It offers consistent performance.

It does not have a security audit feature.

It does not offer high availability.

It offers consistent performance.

It offers decentralized logging.

Which condition must be met for TI-LFA to protect LDP traffic?

For double-segment protection, the P and Q nodes must be SR-capable.

For single-segment protection, the PQ node must be LDP and SR-capable.

The protected destination must have an associated LDP label and prefix-SID.

The point of local repair must be LDP-capable.

For double-segment protection, the P and Q nodes must be SR-capable.

The NOC team must update the BGP forwarding configuration on the network with these requirements:BGP peers must establish a neighborship with NSF capability and restart the session for the capability to be exchanged after 120 seconds.BGP peers must delete routes after 360 seconds of inactivity.Which action meets these requirements?

Set the BGP restart-time to 120 seconds and the stalepath-time to 360 seconds.

Set the BGP restart-time to 120 seconds and the BGP ha-mode sso to 360 seconds.

Set the stalepath-time to 120 seconds and the BGP restart-time to 360 seconds.

Set the BGP ha-mode sso to 120 seconds and the BGP restart-time to 360 seconds.

Set the BGP restart-time to 120 seconds and the stalepath-time to 360 seconds.

Refer to the exhibit. Refer to the exhibit. A network engineer is configuring router RB to secure BGP advertisements against route hijacking activity. RB must validate all prefixes that it receives from origin AS 200 before installing them in the BGP route table.Which configuration meets the requirement?

RB(config)# router bgp 100RB(config-router)# address-family ipv4 unicastPB(config-router-af)# bgp origin-as validation enable

RB(config)# router bgp 100RB(config-router)# address-family ipv4 unicastRB(config-router-af)# bgp bestpath origin-as use validity

RB(config-bgp)# router bgp 100RB(config-bgp)# bgp origin-as validation signal ibgpRB(config-bgp)# bgp bestpath origin-as allow invalid

RB(config-bgp)# router bgp 100RB(config-bgp)# bgp origin-as validation time off

RB(config)# router bgp 100RB(config-router)# address-family ipv4 unicastPB(config-router-af)# bgp origin-as validation enable

After troubleshooting multiple outages on the network due to repeated configuration errors, the network architect asked an engineer to enable NETCONF to facilitate future configurations. The configuration must enable syslog messaging to record NETCONF notifications from each of the numerous devices on the network. Which configuration must the engineer apply?

netconf-yangusername ciscotesttaker privilege 15 password 0 ciscotestaaa new-modelaaa authorization exec default localsnmp-server community ciscotest RWnetconf-yang cisco-ia snmp-community-string ciscotestlogging history debugging

username cisco test taker privilege 15 password 0 cisco testaaa new-modelaaa authorization exec default localsnmp-server community cisco test RWnetconf-yang cisco-ia snmp-community-string ciscotestlogging history warnings

username cisco test taker privilege 15 password 0 ciscotestaaa new-modelaaa authorization exec default localsnmp-server community ciscotest RWnetconf-yang ciscologging history critical

netconf-yangusername ciscotesttaker privilege 15 password 0 ciscotestaaa new-modelaaa authorization exec default localsnmp-server community ciscotest RWnetconf-yang cisco-ia snmp-community-string ciscotestlogging history debugging

netconf-yangusername ciscotesttaker privilege 15 password 0 ciscotestsnmp-server community ciscotest RWnetconf-yang cisco-ia snmp-community-string ciscotestlogging history informational

Refer to the exhibit. In the service provider network, routers PE1, PE2, and PE4 have access to the internet and provide access to customer networks. Router PE3 is used for access to other customer systems. In accordance with a new SLA, an engineer is updating settings on this network so that router CE1 accesses the internet via PE1 instead of PE2. Which two tasks must the engineer perform to complete the process? (Choose two.)

On PE1, configure the internet VRF with import route target 102:102.

On PE2, configure the CE1 VRF with import route target 101:101.

On PE1, configure the internet VRF with import route target 102:102.

On PE1 and PE4, configure the internet VRF with import route targets 102:102 and 104:104.

On PE2, configure the internet VRF with import route target 102:102.

On PE2 and PE3, configure the internet VRF with import route target 101:101.

On PE2, configure the CE1 VRF with import route target 101:101.

Refer to the exhibit. A NOC engineer is configuring label-based forwarding from CSR to the EPC gateway. Cell-site operation and maintenance for IPv4 traffic between 10.20.10.1 and 192.168.10.10 is already up. CR1 and CR2 are configured as route reflectors for AG1 and AG2. Which action completes the configuration?

Apply the BGP_Egress_Filter route policy to the BGP neighbor-group packet core on AG1.

Remove address-family labeled-unicast from the BGP session-group infra on AG1 for neighbor-group core.

Apply the BGP_Egress_Filter route policy to the BGP neighbor-group packet core on AG1.

Configure AG1 to allocate a label to the BGP routes that are received in the BGP session group transport.

Configure AG1 to allow the 300:100 and 200:100 communities in the BGP_Egress_Filter route policy.

Refer to the exhibit. GuidelinesThis is a lab item in which tasks will be performed on virtual devices.• Refer to the Tasks tab to view the tasks for this lab item.• Refer to the Topology tab to access the device console(s) and perform the tasks.• Console access is available for all required devices by clicking the device icon or using the tab(s) above the console window.• All necessary preconfigurations have been applied.• Do not change the enable password or hostname for any device.• Save your configurations to NVRAM before moving to the next item.• Click Next at the bottom of the screen to submit this lab and move to the next question.• When Next is clicked, the lab closes and cannot be reopened.Topology: Tasks-Configure and verify the OSPF neighbor adjacency between R1 and R2 in OSPF area 0 according to the topology to achieve these goals:

Establish R1 and R2 OSPF adjacency. All interfaces must be advertised in OSPF by using the OSPF interface command method. Use Loopback0 as the OSPF ID.

There must be no DR/BDR elections in OSPF Area 0 when establishing the neighbor relationship between R1 and R2. OSPF must not generate the host entries /32 for the adjacent interfaces.

Enable OSPF MD5 Authentication between both routers at the interface level with password C1sc0!.

Refer to the exhibit. An engineer at a new ISP must configure many Cisco devices in the data center. To make the process more efficient, the engineer decides to automate the task with a REST API. Which action does this JSON script automate?

Configure the IP address for the existing loopback interface.

Configure a physical interface on the router with an IP address and then create a loopback interface.

Configure a physical interface on the router with an IP address.

Delete the existing loopback Interface and replace it with a new loopback interface.

What Is one of the differences between Ansible and Chef?

Ansible uses YAML and Chef uses Ruby.

Chef requires the use of Windows in the environment and Ansible requires Linux.

Chef is highly scalable and Ansible is highly secure.

Ansible uses Ruby and Chef uses Python.

Refer to the exhibit. A network engineer must configure an LDP neighborship between two newly installed routers that are located in two different offices. Router 1 is the core router in the network and it has already established OSPF adjacency with router 2. On router 1 and router 2. interface fa0/0 is configured for BFD. Which additional configuration must the engineer apply to the two devices to meet the requirement?

Router1(config)#int fa0/0 -Router1(config-if)#mpls ip -Router2(config)#router ospf 1 –Router2(config-router)#mpls ldp autoconfig

Router1(config)#int fa0/0 -Router1(config-if)#mpls ldp autoconfigRouter2(config)#router ospf 1 -Router2(config-router)#mpls ip

Router1(config)#int fa0/0 -Router1(config-if)#mpls ip -Router1(config-if)#mpls ldp discovery transport-address interfaceRouter2(config)#int fa0/0 -Router2(config-if)#mpls ip -Router2(config-if)#mpls ldp discovery transport-address interface

Route1(config)#int fa0/0 -Router1(config-if)#mpls ldp autoconfigRouter1(config-if)#mpls ldp discovery interfaceRouter2(config)#router ospf 1 -Router2(config-router)#mpls ldp autoconfigRouter2(config-if)#mpls ldp discovery interface

Router1(config)#int fa0/0 -Router1(config-if)#mpls ip -Router2(config)#router ospf 1 –Router2(config-router)#mpls ldp autoconfig

Guidelines-This is a lab item in which tasks will be performed on virtual devices.• Refer to the Tasks tab to view the tasks for this lab item.• Refer to the Topology tab to access the device console(s) and perform the tasks.• Console access is available for all required devices by clicking the device icon or using the tab(s) above the console window.• All necessary preconfigurations have been applied.• Do not change the enable password or hostname for any device.• Save your configurations to NVRAM before moving to the next item.• Click Next at the bottom of the screen to submit this lab and move to the next question.• When Next is clicked, the lab closes and cannot be reopened.Topology: Tasks-Configure the BGP routing protocol for R1 and R2 according to the topology to achieve these goals:

Configure EBGP neighbor adjacency for the IPv4 and IPv6 address family between R1 and R2 using Loopback0 IPv4 and IPv6 addresses. All BGP updates must come from the Loopback0 interface as the source. Do not use IGP routing protocols to complete this task.

Configure MD5 Authentication for the EBGP adjacency between R1 and R2. The password is clear text C1sc0!.

What is a characteristic of the YANG model?

It uses containers to categorize related nodes.

Associate types are optional for each leaf.

It uses containers to categorize related nodes.

It is a distributed model of nodes.

Spines are used to represent individual attributes of nodes.

Refer to the exhibit. The network engineer is performing end-to-end MPLS path testing with these conditions:• Users must perform MPLS OAM for all available same-cost paths from R1 to R4.• Traceroute operations must return all of the next-hop IP details.Which configuration meets these requirements?

traceroute mpls multipath ipv4 10.10.10.4 255.255.255.255

traceroute mpls ipv4 10.10.10.4 255.255.255.255 verbose

traceroute mpls multipath ipv4 10.10.10.4 255.255.255.255

traceroute mpls multipath ipv4 10.10.10.4 255.255.255.255 verbose

traceroute mpls ipv4 10.10.10.4 255.255.255.255 source 10.10.10.1

Refer to the exhibit. A network engineer must implement SNMPv3 on a Cisco IOS XR router running BGP. The engineer configures SNMPv3 to use SHA for authentication and AES for privacy on the routers, which are in a different data center in the same exchange as other routers. The engineer must also verify the associated MIB view family name, storage type, and status. Which set of actions meets these requirements?

Add configuration snmp-server user AuthUser group2 remote 10.1.1.1 v3 auth sha and use show snmp engineid to verify the configuration.

Add configuration snmp-server user UserJustMe GrpMonitoring v3 auth sha AuthPass1 priv 3des 128 PrivPass2 and use show snmp interface to verify the configuration.

Add configuration snmp-server user AuthUser group2 remote 10.1.1.1 v3 auth sha and use show snmp mib to verify the configuration.

Add configuration snmp-server user AuthUser group2 remote 10.1.1.1 v3 auth sha and use show snmp engineid to verify the configuration.

Add configuration snmp-server user UserJustMe GrpMonitoring v3 auth sha AuthPass1 priv aes 128 PrivPass2 and use show snmp view to verify the configuration.

Refer to the exhibit. The CE router is peering with both PE routers and advertising a public prefix to the internet. Routing to and from this prefix will be asymmetric under certain network conditions, but packets must not be discarded. Which configuration must an engineer apply to the two PE routers so that they validate reverse packet forwarding for packets entering their Gi2 interfaces and drop traffic from the RFC1918 space?

ip verify unicast source reachable-via any

ip verify unicast source reachable-via rx allow-default

interface GigabitEthernet 2ip verify unicast source reachable-via rx

ip verify unicast source reachable-via any allow-defaultinterface GigabitEthernet 2

ip verify unicast source reachable-via any

Refer to the exhibit. A network operator working for a telecommunication company with an employee ID: 4350:47:853 must implement an IGP solution based on these requirements:• Subnet 10.50.10.0 traffic must exit through the R1 router to connect with the Syslog server.• Subnet 10.50.20.0 traffic must exit through the R2 router to connect with the NTP server.• In case of link failure between R2 and R4, traffic must be routed via R1 and R3.Which two configurations must be implemented on R5 to meet these requirements? (Choose two.)

Enable a route policy to advertise 10.50.20.0 in ISIS-L2 at a higher cost.

Enable a route policy to advertise 10.50.10.0 In OSPF Area 0 at a low cost.

Apply a route policy to redistribute 10.50.0.0 prefixes in OSPF to ISIS and ISIS to OSPF.

Apply a route policy to redistribute 10.50.20.0 from ISIS-L2 to OSPF Area 0 at a higher cost.

Enable a route policy to advertise 10.50.20.0 in ISIS-L2 at a higher cost.

Apply a route policy to redistribute 10.50.10.0 from OSPF Area 0 to ISIS-L2 at a lower cost.

Enable a route policy to advertise 10.50.10.0 In OSPF Area 0 at a low cost.

An ISP Is Implementing end-to-end fault monitoring for a customer based on the IEEE 802.3ah standard. The solution must detect when 15 or more corrupted Ethernet packets arrive within 10 ms and stop propagating traffic through the ISP backbone network or to the customer side. Which configuration must the ISP engineer apply?

ethernet oamethernet oam link-monitor receive-crc window 10ethernet oam link-monitor receive-crc threshold high 15ethernet oam link-monitor transmit-crc window 10ethernet oam link-monitor transmit-crc threshold high 15ethernet oam link-monitor high-threshold action errordisable-interface

ethernet oam link-monitoring enableethernet oam link-monitor crc-errors ingress time-window 10ethernet oam link-monitor crc-errors ingress threshold high 15ethernet oam link-monitor crc-errors egress time-window 10ethernet oam link-monitor crc-errors egress threshold high 15ethernet oam link-monitor high-threshold action shutdown-interface

ethernet oam link-monitoringethernet oam link-monitor receive-crc window 15ethernet oam link-monitor receive-crc threshold high 10ethernet oam link-monitor high-threshold action disable-interface

ethernet oamethernet oam link-monitor receive-crc window 10ethernet oam link-monitor receive-crc threshold high 15ethernet oam link-monitor transmit-crc window 10ethernet oam link-monitor transmit-crc threshold high 15ethernet oam link-monitor high-threshold action errordisable-interface

ethernet oam link-monitoring global enableethernet oam link-monitor receive crc-errors period 15ethernet oam link-monitor receive crc-errors limit 15ethernet oam link-monitor transmit crc-errors period 10ethernet oam link-monitor transmit crc-errors limit 15ethernet oam link-monitor limit action error-disable interface

Refer to the exhibit. Guidelines-This is a lab item in which tasks will be performed on virtual devices.• Refer to the Tasks tab to view the tasks for this lab item.• Refer to the Topology tab to access the device console(s) and perform the tasks.• Console access is available for all required devices by clicking the device icon or using the tab(s) above the console window.• All necessary preconfigurations have been applied.• Do not change the enable password or hostname for any device.• Save your configurations to NVRAM before moving to the next item.• Click Next at the bottom of the screen to submit this lab and move to the next question.• When Next is clicked, the lab closes and cannot be reopened.Topology: Tasks-R1 and R2 are having issues forming an eBGP neighbor relationship. Troubleshoot and resolve the issue to achieve these goals:

Configure R1 and R2 to form a BGP neighborship using their Loopback interfaces.

Form the neighbor relationship using a BGP multihop mechanism. Use minimal values to solve the issue.

Cisco 350-501 Practice Test 9 - Free Online Exam Questions 321-360

A company is expanding its existing office space to a new floor of the building, and the networking team is installing a new set of switches. The new switches are running IGMPv2, and the engineers configured them for VLAN10 only. The rest of the existing network includes numerous Layer 2 switches in multiple other VLANs, all running IGMPv3. Which additional task must the team perform when deploying the new switches so that traffic is switched correctly through the entire network?

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Cisco 350-501 Practice Test 9

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