Implementing and Operating Cisco Service Provider Network Core Technologies (350-501 SPCOR)
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A network operator needs to implement PIM-SSM multicast configuration on customer's network so that users in different domains are able to access and stream live traffic. Which two actions must the engineer perform on the network
to make the streaming work? (Choose two.)
Refer to the exhibit.
Router R1 is reporting that its BGP neighbor adjacency to router R2 is down, but its state is Active as shown. Which configuration must be applied to routers R1 and R2 to fix the problem?
A)
B)
C)
D)
Refer to the exhibit. A service provider engineer Is configuring the connection between CE1 and CE2. AS 200 of the service provider and AS 100 of enterprise ABC should connect using BGP. The engineer already completed the configuration of VRF RT 100:10 of enterprise AB
C.
Which configuration must the engineer apply on PE1 to meet the requirement?Refer to the exhibit:
A network engineer is implementing an OSPF configuration Based on the output, which statement is true?
Which three OSPF parameters must match before two devices can establish an OSPF adjacency? (Choose three.)
You are configuring MPLS traffic-engineering tunnels in the core.
Which two ways exist for the tunnel path across the core? (Choose two )
Which two PHY modes are available to implement an IOS XR Gigabit Ethernet interface interface? (Choose two.)
Exhibit:
A network engineer must update the routing toward the web server with IP address 35.22.13.1. The primary path must be configured via the neighbor router with ID 1.1.1.1. However, local-preference configuration is not permitted on R1. Which task must the engineer perform on R1 to complete the implementation?
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?
Refer to the exhibit.
A network operator has two IPv4 and IPv6 dual-stacked network on each side of the IPv4 core network. The operator must be able to provide connectivity between them while using specific assigned IPv6 space provided from the company IP administrator team. Which technology should the network operator use to accomplish this goal?
A network engineer is deploying VPLS configuration between multiple PE routers so that customer's remote offices have end-to-end LAN connectivity. Which additional configuration should the engineer perform on the PE routers to enable the virtual switch instance?
A)
B)
C)
D)
The network team is planning to implement IPv6 on the company’s existing IPv4 network infrastructure. The network currently uses IS-IS to share routes between peers. Which task must the team perform so that IS-IS will run in multitopology mode on the updated IPv6 network?
A network engineer has configured TE tunnels in the MPLS provider core. Which two steps ensure traffic traverse? (Choose two.)
After you analyze your network environment, you decide to implement a full separation model for Internet access and MPLS L3VPN services For which reason do you make this decision?
Refer to the exhibit.
An administrator working for large ISP must connect its two POP sites to provide internet connectivity to its customers. Which configuration must the administrator perform to establish an iBGP session between routers PE1 on POP site 1 and PE2 on POP site 2?
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:
1. 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.
2. Configure MD5 Authentication for the EBGP adjacency between R1 and R2. The password is clear text C1sc0!.
Refer to the exhibit.
A network engineer is configuring MPLS LDP synchronization on router R1. Which additional configuration must an engineer apply to R1 so that it will synchronize to OSPF process 1?
Refer to the exhibit.
An engineer is configuring path selection on router R1 for two ASNs as shown. Which additional task must the engineer perform on Router 1 so that all outbound traffic utilizes the link between R1 and R3 to reach ASN 4567?
A network architect plans to implement MPLS OAM to provide additional troubleshooting functionality for the NOC team. After analyzing the configuration on the MPLS P/PE nodes, the architect decides to revise the CoPP policies. Which two actions ensure that the new solution is secure? (Choose two.)
The engineering team at a large ISP has been alerted a customer network is experiencing high traffic congestion. After a discussion between the ISP and technical personnel at the customer site, the team agrees that traffic to the customer network that exceeds a specific threshold will be dropped. Which task must the engineer perform on the network to implement traffic policing changes?
Refer to the exhibit:
A network operator working for service provider with an employee id 3715 15:021 applied this configuration to a router.
Which additional step should the engineer use to enable LDP?
What are two factors to consider when implementing NSR High Availability on an MPLS PE router? (Choose two.)
Refer to the exhibit:
When implementing an LDP protocol, an engineer experienced an issue between two directly connected routers and noticed that no LDP neighbor exists for 1.1.1.1.
Which factor should be the reason for this situation?
Refer to the exhibit:
If router RA is configured as shown, which IPv4 multicast address space does it use?
After a possible security breach, the network administrator of an ISP must verify the times that several different users logged into the network. Which command must the administrator enter to display the login time of each user that activated a session?
Refer to the exhibit. Four midsize service providers provide access to different customers that use Layer 3 VPN services to enable communication across geographic regions. The service providers are connected as shown in the exhibit, and the PEs have established eBGP relationships. PE4 has an IBGP relationship with PE5. The routes that PE4 learns from PE5 must reach the other PE routers, but they are absent from the routing tables on the other PES. Which action should the engineers take to correct the problem?
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 and verify the OSPF neighbor adjacency between R1 and R2 in OSPF area 0 according to the topology to achieve these goals:
1. 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 I
D.
2. 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.
3. Enable OSPF MD5 Authentication between both routers at the interface level with password C1sc0!.
Which two features will be used when defining SR-TE explicit path hops if the devices are using IP unnumbered interfaces? (Choose two.)
Which configuration enables BGP FlowSpec client function and installation of policies on all local interfaces?
A)
B)
C)
D)
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?
Refer to the exhibit. A host connected to R3 must connect with a server on R1 that provides critical, time-sensitive data. Traffic between the host and server must always be given bandwidth to traverse the links when they are congested, with other traffic being dropped. How must the network engineer implement a QoS strategy with classification to ensure that the traffic is given the appropriate bandwidth?
Which technology enables the addition of new wavelengths in a fiber-optic network?
A network operator working for a private outsourcing company with an employee id: 4261:72:778 needs to limit the malicious traffic on their network. Which configuration must the engineer use to implement URPF loose mode on the GigabitEthernet0/1 interface?
Refer to the exhibit.
Which the link aggregation configuration router is running on Cisco IOS XR software, which LACP interface configuration is needed to add the interface to the bundle?
Refer to the exhibit.
An engineer has started to configure a router for secure remote access as shown. All users who require network access need to be authenticated by the SSH Protocol.Which two actions must the engineer implement to complete the SSH configuration? (Choose two.)
Drag and drop the BGP Best Path Algorithm rules from the left into the corresponding order of importance on the right.
Refer to the exhibit:
Which information is provided for traceback analysis when this configuration is applied?
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?
Refer to the exhibit:
A network engineer is implementing a BGP routing policy.
Which effect of this configuration is true?
Drag and drop the characteristics from the left onto the automation tool on the right.
An engineer is implementing MPLS to monitor within the MPLS domain. Which must the engineer perform to prevent packets from being forwarded beyond the service provider domain when the LSP is down?
Refer to the exhibit. The USER mat is connecting an application on an Internet connection in AS 100 is facing these issues:
What action resolves the issues on R3 and R4 routers?
What occurs when a high bandwidth multicast stream is sent over an MVPN using Cisco hardware?
A network administrator must monitor network usage to provide optimal performance to the network end users when the network is under heavy load. The administrator asked the engineer to install a new server to receive SNMP traps at destination 192.168.1.2. Which configuration must the engineer apply so that all traps are sent to the new server?
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?Refer to Exhibit.
A network engineer is trying to retrieve SNMP MIBs with RESTCONF on the Cisco switch but fails. End-to-end routing is in place. Which configuration must the engineer implement on the switch to complete?
Which two tasks must an engineer perform when implementing LDP NSF on the network? (Choose two.)
Refer to the exhibit. A large service provider is migrating device management from Layer 2 VLAN-based to Layer 3 IP-based solution. An engineer must configure the ISIS solution with these requirements:
Network management server IP 172.16.10.1 must be advertised from the core MPLS network to the regional domain.
The external network 202.10.0.0/24 must not establish ISIS peering with the R5 router.
The regional network must prevent sending unnecessary hello packets and flooding the routing tables of the R5 router.
Which two ISIS parameters must be implemented to meet these requirements? (Choose two.)
Refer to the exhibit:
Which purpose of implementing NSF with this configuration is true?
Refer to the exhibit. The operations team for a service provider network is implementing a route map policy. OSPF area 0 should originate the default route with a type 2 metric of 2 when the application server on the connected interface (192.168.1.1) is up. Routers RL and RM have set up OSPF peering with other adjacent routers. Which action meets this requirement?
Refer to the exhibit. An engineer is configuring IS-IS on ISP network. Which IS-IS configuration must an engineer implement on router AGG1 so that it establishes connectivity to router AGG6 via the BB3 core router?
An engineer must apply an 802.1ad-compliant configuration to a new switchport with these requirements:
The switchport must tag all traffic when it enters the port.
The switchport is expected to provide the same level of service to traffic from any customer VLAN.
Which configuration must the engineer use?
Refer to the exhibit.
While troubleshooting the network, a network operator with an employee id: 3812:12:993 is trying to ping XR1. Which result should the operator expect when trying to ping to an XR1 local address?
You are testing the capabilities of MPLS OAM ping.
Which statement is true?
A mod-size service provider uses L2VPN as its standard for connectivity between offices. A small company wants the service provider to connect the company’s two sites across the service provider core. To meet service requirements, the service provider must extend the layer 2 domain between the company’s two locations. Which configuration must the engineer apply to implement an attachment circuit between the two sites using a VLAN tag of 12?
Refer to the exhibit. A global company plans to implement BGP at its newest location to provide connectivity to other offices. The global infrastructure of the company is a multivendor environment. An engineer must review the BGP core configurations at headquarters to determine if they can be repurposed at the new location. The engineer copied this JSON script for review. What is the effect of the script?
Refer to the exhibit.
Routers R2 and R3 are Level 1/Level 2 IS-IS routers that redistribute 198 18.x.x/24 prefixes to routers R5 and R6 In the Level 1 area R2 Is to be the preferred router for all redistributed prefixes in the Level 1 area. Which configuration sets this preference?
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?
A network administrator is planning a new network with a segment-routing architecture using a distributed control plane. How is routing information distributed on such a network?
Refer to the exhibit.
Which configuration must be implemented on router R8 so that it will establish OSPF adjacency with R5?
A)
B)
C)
D)
Refer to the exhibit.
A network engineer must meet these requirements to provide a connects, solution:
Which two configurations must be implemented to meet the requirements? (Choose two)
An engineer is moving all of an organization’s Cisco IOS XE BGP routers to the address-family identifier format. Which command should be used to perform this upgrade quickly with the minimum service disruption?
Refer to the exhibit.
CE1 and CE2 require connectivity to the internet through the ISP connected to PE3 What should an engineer configure to complete this task?
Drag and drop the multicast concepts from the left onto the correct descriptions on the right.
According to RFC5305 on IS-IS extensions for traffic engineering, what is the 4-octet sub-TLV type 10 of extended IS-IS reachability TLV type 22?
Refer to the exhibit.
An engineer applied a gRPC dial-in configuration on customer's router to provide connection multiplexing and two-way streaming. What does this configuration accomplish in a gRPC?
Refer to the exhibit. An engineer is scripting ACLs to handle traffic on the given network. The engineer must block users on the network between R1 and R2 from leaving the network through R5. but these users must still be able to access all resources within the administrative domain. How must the engineer implement the ACL configuration?
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 BF
D.
Which additional configuration must the engineer apply to the two devices to meet the requirement?l
Refer to the exhibit. A network engineer working for a telecommunication company with an employee ID: 4602:62:646 is configuring security controls for the IPv6 multicast group, which is used for video TV. The solution from the engineer should reduce network usage and minimize the leave latency for the user that is connected to VLAN 76. Which two configurations meet this goal? (Choose two.)
A)
B)
C)
D)
E)
Refer to the exhibit.
An engineer configured BGP summarization on a customer's network. Which route is advertised to BGP peers?
Refer to the exhibit. An engineer must Implement a traceroute operation to verity the R1 point-to-multipoint LSP connections. The traceroute operation must return all labels and hop-by-hop IP addresses for destinations 10.20.0.1. 10.30.0.1, and 10.40.0.1. and the maximum number of hops is 4. Which command must be executed to meet the requirements?
ASN 65001 is peering with ASN 65002 to exchange IPv6 BGP routes. All routes that originate in ASN 65001 have a standard community value of 65001:100, and ASN 65002 is allowed to advertise only 2001 :db8:aaaa::/48. An engineer needs to update the ASN 65001 route-filtering configuration to meet these conditions:
* Looped routes into ASN 65001 and routes that have traversed 10 or more ASNs must be denied.
* Routes accepted into ASN 65001 must be assigned a community value of 65001:200.
Which configuration must the engineer apply to the ASN 65001 border router?
Which action does the ingress VTEP perform on traffic between EVPN VXLAN overlays?
Refer to the exhibit:
A network administrator wants to enhance the security for SNMP for this configuration.
Which action can the network administrator implement?
While an engineer deploys a new Cisco device to redistribute routes from OSPF to BGP, they notice that not all OSPF routes are getting advertised into BGP. Which action must the engineer perform so that the device allows O, OIA, OE1, and OE2 OSPF routes into other protocols?
An engineer is trying to implement BGP in a multihomed architecture. What must the engineer configure to influence inbound path selection?
Refer to the exhibit.
An engineer has started to configure a router for OSPF, as shown Which configuration must an engineer apply on the network so that area 15 traffic from R5 to R1 will prefer the route through R4?
Refer to the exhibit:
BGPsec is implemented on R1. R2. R3. and R4 BGP peering is established between neighboring autonomous systems Which statement about implementation is true?
Refer to the exhibit. R1 has two upstream Tier 1 service providers. BGP is in use as the exterior routing protocol, and ISP_A and ISP_B are sending the full BGP table. A network engineer must assign local-preference 70 to all routes with multiple exit discriminator 30. Which configuration must the network engineer apply?
Refer to the exhibit.
What reestablishes the OSPF neighbor relationship between Router 1 and Router 2?
Refer to the exhibit.
An engineer needs to implement this QoS policy on customer's network due to ongoing slow network issues. What will be the effect on the network when the engineer implements this configuration?
Refer for the exhibit. To optimize network operations, the senior architect created this Python 3.9 script for network automation tasks and to leverage Ansible 4.0 playbooks. Devices In the network support only RFC 2617-based authentication What does the script do?
Refer to the exhibit A network engineer is in the process of implementing IS-IS Area 1 and Area 2 on this network to segregate traffic between different segments of the network The hosts in the two new areas must maintain the ability to communicate with one another In both directions. Which additional change must be applied?
Refer to the exhibit.
A network engineer is implementing an LDP-based MPLS solution to enable packet flow between the two bank sites The engineer was given two requirements
·LDP peering must stay up when there is a link failure between R3 and R6
·LDP peering must not flap when there is a link failure between R5 and R6
Which action meets these requirements?
Refer to the exhibit.
A network operator needs to shut down interface Gi0/0/0/2 for maintenance. What occurs to the interface states of Gi0/0/0/0 and Gi0/0/0/1?
Refer to the exhibit.
AN engineer is configuring segment routing on an ISP to simplify traffic engineering and management across network domains. What should the engineer do to complete the implementation of segment routing?
An engineer working for a private telecommunication company with an employe id:3948:613 needs to limit the malicious traffic on their network. Which configuration must the engineer use to implement URPF loose mode on the GigabitEthernet0/1 interface?
A)
B)
C)
D)
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.)
Drag and drop the NAT64 descriptions from the left onto the correct NAT64 types on the right.
A network engineer must configure a router for Flexible NetFlow IPFIX export. The IP address of the destination server is 172.17.12.1. The source address must be set to the Loopback0 IPv4 address and exported packets must be set to DSCP CS3. The TTL must be 64 and the transport protocol must be set to UDP with destination port 4739. Which configuration must the engineer apply to the router?
Refer to the exhibit. A network engineer is implementing iBGP and eBGP between AS 600 and AS 500 with these requirements:
Which action must be taken on R2 to meet the requirements?
Which two IS-IS parameters must match before two Level 2 peers can form an adjacency? (Choose two)
When configuring traffic engineering tunnels in Cisco MPLS core network, you see the traffic is not taking the expected path in the core.
Which command do you use to quickly check path of a TE tunnel?
router(config)# route-map blackhole-trigger
router(config-route-map)# match tag 777
router(config-route-map)# set ip next-hop 10.0.1.1
router(config-route-map)# set origin igp
router{config-route-map)# set community no-export
Refer to the exhibit. EIGRP is running across the core to exchange internal routes, and each router maintains iBGP adjacency with the other routers on the network. An operator has configured static routes on the edge routers R1 and R2 for IP address 10.0.1.1, which is used as a black hole route as shown. Which configuration should the operator implement to the management router to create a route map that will redistribute tagged static routes into BGP and create a static route to blackhole traffic with tag 777 that is destined to the server at 192.168.10.100?
Refer to me exhibit.
A network operator recently configured BGP FlowSpec for me internal IT network What will be inferred from the configuration deployed on me network?
Refer to the exhibit.
An engineer ran this show telemetry command to view subscription SUB11 on RouterX. The engineer then decided that RouterY should provide the same output lor sensor group SGroup13 as RouterX. The engineer cannot access RouterX to copy its configuration No access lists on the router block user access Which configuration must the engineer apply on RouterY to provide the same output from the show telemetry command?
A)
B)
C)
D)
How does Cisco MPLS TE use OSPF extensions to allow for optimized transit between a headend router and a destination router?
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?
A network engineer is configuring RIP as the routing protocol between multiple PEs and CEs. The engineer must avoid advertising the same routes back to their sources. Which action should be performed on the routers to accomplish this task?
Refer to the exhibit. An engineer started to configure a router for OSP
F.
Which configuration must the engineer perform on the router without changing any interface configuration so that the router establishes an OSPF neighbor relationship with its peer?Refer to the exhibit. An organization s network recently experienced several significant outages due to device failures. The network administrator just moved the network devices to a new central data center, and packets are switched using labels. The administrator Is now implementing NSF on the network to reduce potential risk factors in the event of another outage. Which task must the administrator perform on each router as part of the process?
Refer to the exhibit. The radio network and packet core are using the route RX-RZ-RB to establish communication. The LDP session between 10.10.10.5 and 10.10.10.1 is experiencing link flapping at random intervals for 30-45 seconds each time. A network engineer must protect the LDP session and improve MPLS traffic convergence. Which action meets these requirements?
Refer to the exhibit.
Which configuration must be applied to each of the four routers on the network to reduce LDP LIB size and advertise label bindings for the /32 loopback IP space only?
Refer To the exhibit:
On R1, which output does the show isis neighbors command generate?
A)
B)
C)
D)
Which configuration mode do you use to apply the mpls Idp graceful-restart command in IOS XE Software? MPLS
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?
Refer to the exhibit. Tier 1 ISP A is connected to small Tier 3 ISP
B.
The EBGP routing protocol is used for route exchange. The networking team at ISP A noticed the flapping of BGP sessions with ISPB.
The team decides to Improve stability on the network by suppressing the subnet for 30 minutes when a session begins to flap. Which action must the team perform to meet this goal?Refer to the exhibit. The network operations team reported that the access site that is connected to R3 is not connecting to the application server in the data center and that all packets that are sent from the application server to the access site are dropped. The team verified that OSPF and BGP peerings are up in BGP AS 65101 and BGP AS 65201. R4 is expected to receive traffic from the application server route via OSP
F.
Which action resolves this issue?Refer to the exhibit. A network engineer is configuring an SNMP community on router RB with these requirements:
Which configuration meets these requirements?
An engineer is setting up overlapping VPNs to allow VRF ABC and XYZ to communicate with VRF CENTRAL but wants to make sure that VRF ABC and XYZ cannot communicate. Which configuration accomplishes these objectives?
TESTED 12 May 2024
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