350-501 practice questions 61–70

1. Question 61 · 377 in bank

   

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

   • AR2 is unable to share information because the ip pim autorp listener command is missing
   • BR1 floods information about R2 throughout the multicast domain
   • CR2 floods information about R1 throughout the multicast domain
   • DR2 is elected as the RP for this domain

   Show answer

   Answer: C

   Explanation

   C is correct. Since BSR is enable on R2 therefore: A BSR is elected among the candidate BSRs automatically; they use bootstrap messages to discover which BSR has the highest priority. This router then announces to all PIM routers in the PIM domain that it is the BSR. https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipmulti_pim/configuration/xe-16-5/imc-pim-xe-16-5-book/imc-basic-cfg.html#GUID-D1656247-AFA8-4F67-8114-FB290E579FDD

   Source: Adapted from community discussion — beenardino

   References

   • Cisco documentation

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2. Question 62 · 377 in bank

   

   Refer to the exhibit. An engineer is implementing Auto-RP and reviewing the configuration of the PE-A. Which configuration permits Auto-RP messages to be forwarded over this interface?

   • APE-A(config-if)#no ip pim bsr-border
   • BPE-A(config-if)#ip igmp version 3
   • CPE-A(config-if)#ip pim sparse-mode
   • DPE-A(config-if)#ip pim sparse-dense-mode

   Show answer

   Answer: C

   Explanation

   Sparse-Dense Mode for Auto-RP A prerequisite of Auto-RP is that all interfaces must be configured in sparse-dense mode using the ip pim sparse-dense-mode https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3750x_3560x/software/release/15-2_2_e/multicast/configuration_guide/b_mc_1522e_3750x_3560x_cg/b_mc_3750x_3560x_chapter_010.html

   Source: Adapted from community discussion — mabrinaldi

   References

   • Cisco documentation

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3. Question 63 · 377 in bank

   Select 2

   An engineer needs to implement QOS mechanism on customer's network as some applications going over the Internet are slower than others. Which two actions must the engineer perform when implementing traffic shaping on the network in order to accomplish this task? (Choose two.)

   • AImplement packet remarking for excess traffic
   • BConfigure a queue with sufficient memory to buffer excess packets
   • CImplement a scheduling function to handle delayed packets
   • DConfigure the token values in bytes
   • EConfigure a threshold over which excess packets are discarded

   Show answer

   Answer: BC

   Explanation

   https://www.cisco.com/c/en/us/support/docs/quality-of-service-qos/qos-policing/19645-policevsshape.html Shaping implies the existence of a queue and of sufficient memory to buffer delayed packets, while policing does not. Queueing is an outbound concept; packets going out an interface get queued and can be shaped. Only policing can be applied to inbound traffic on an interface. Ensure that you have sufficient memory when enabling shaping. In addition, shaping requires a scheduling function for later transmission of any delayed packets.

   Source: Adapted from community discussion — murmelika

   References

   • Cisco documentation

   Next question

4. Question 64 · 377 in bank

   

   Refer to the exhibit. Which statement describes the effect of this configuration?

   • AIt matches HTTP traffic for use in a policy map.
   • BIt applies a service policy to all interfaces remarking HTTP traffic.
   • CIt creates an ACL named WEB that filters HTTP traffic.
   • DIt modifies the default policy map to allow all HTTP traffic through the router.

   Show answer

   Answer: A

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5. Question 65 · 377 in bank

   A regional MPLS VPN provider operates in two regions and wants to provide MPLS L3VPN service for a customer with two sites in these separate locations. The VPN provider approaches another organization to provide backbone carrier services so that the provider can connect to these two locations. Which statement about this scenario is true?

   • AWhen edge routers at different regional sites are connected over the global carrier backbone, MP-eBGP must run between the routers to exchange the customer VPNv4 routes.
   • BWhen eBGP is used for label exchange using the send-label option, MPLS-BGP forwarding is configured under the global ABC CSC PE-to-CE interface.
   • CWhen BGP is used for both route and label exchange, the neighbor a.b.c.d send-label command is used under the address-family VPNv4 command mode.
   • DWhen IGP is used for route exchange and LDP for label exchange, MPLS is enabled only on the VRF interface on the backbone-carrier PE side.

   Show answer

   Answer: B

   Explanation

   B is worded badly but is referring to "(int)#mpls bgp forwarding", which has the IOS[-XE] software install a hostroute for the remote BGP peer - a requirement for label-binding. B is therefore the most correct answer.

   Source: Adapted from community discussion — iliveinspace

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6. Question 66 · 377 in bank

   

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

   • AAll traffic that matches acl10 is allowed without any change to its local-preference.
   • BAll traffic that matches acl10 is dropped without any change to its local-preference.
   • CIf traffic matches acl10, it is allowed and its local-preference is set to 300.
   • DAll traffic is assigned a local-preference of 300 regardless of its destination.

   Show answer

   Answer: A

   Explanation

   Th answer is A... if you do the same policy but instead of using the local preference you add the "drop" the routes wouldn't be dropped unless you had an explicit drop on the next if statement or outside of the "if". if destination in acl10 then pass <<<<<< traffic would pass and skip over the "else" same rule applies to the local-pref else drop endif end-policy

   Source: Adapted from community discussion — Net_Dio

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7. Question 67 · 377 in bank

   You are creating new Cisco MPLS TE tunnels. Which type of RSVP message does the headend router send to reserve bandwidth on the path to the tailend router?

   • Apath
   • Btear
   • Cerror
   • Dreservation

   Show answer

   Answer: A

   Explanation

   Reference: https://packetpushers.net/rsvp-te-protocol-deep-dive/

   Source: Adapted from community discussion — rans3001

   References

   • Cisco documentation

   Next question

8. Question 68 · 377 in bank

   Select 2

   

   Refer to the exhibit. A network engineer is implementing QoS services. Which two statements about the qos-group keyword on Cisco IOS XR are true? (Choose two.)

   • AIt marks packets for end-to-end QoS policy enforcement across the network.
   • BQoS group marking occurs on the ingress.
   • CThe QoS group numbering corresponds to priority level.
   • DQoS group can be used in fabric QoS policy as match criteria.
   • EIt cannot be used with priority traffic class.

   Show answer

   Answer: BD

   Explanation

   'B' and 'D' are correct answers. https://www.cisco.com/c/en/us/td/docs/routers/ncs6000/software/ncs6k_r6-1/qos/configuration/guide/b-qos-cg-ncs6k-61x/b-qos-cg-ncs6k-61x_chapter_0110.html Fabric QoS policy class maps are restricted to matching a subset of these classification options: precedence dscp qos-group discard-class mpls experimental topmost

   Source: Adapted from community discussion — terebok

   References

   • Cisco documentation

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9. Question 69 · 377 in bank

   

   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?

   • APIM-SM
   • BBIDIR-PIM
   • CPIM-SSM
   • DPIM-DM

   Show answer

   Answer: B

   Explanation

   I can aid in the discussion with the following premises: Based on my research - BIDIR-PIM is an extension to PIM-SM (requires PIM-SM to be pre-configured). Cisco recognizes PIM-DM and PIM-SM as the initial set of protocols. I'm voting for "A" as the answer

   Source: Adapted from community discussion — blizzlondon

   References

   • Cisco documentation
   • cisco.com documentation
   • Cisco documentation

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10. Question 70 · 377 in bank

    

    Refer to the exhibit. Which statement supports QPPB implementation?

    • AQPPB policies affect only egress traffic.
    • BQoS policies rely exclusively on BGP attributes to manipulate traffic.
    • CQoS policies are identified in the MPLS forwarding table.
    • DQoS policies use BGP to gain full coverage on the network.

    Show answer

    Answer: B

    Explanation

    I'm go with Answer B The QoS Policy Propagation via BGP feature allows you to classify packets by IP precedence based on the Border Gateway Protocol (BGP) Attributes like community lists, BGP autonomous system paths, and access lists.

    Source: Adapted from community discussion — Onny

    References

    • cisco.com documentation
    • Cisco documentation
    • Cisco documentation
    • Cisco documentation
    • Cisco documentation

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350-501 practice, question 61. 377 questions available.