350-501 practice questions 171–180

1. Question 171 · 377 in bank

   

   Refer to the exhibit. The USER that is connecting an application on an Internet connection in AS 100 is facing these issues:

   

   ✑ The USER lost the connection to the application during a failure between IG and R2. ✑ Router R2 configuration is lost due to a power outage. ✑ The application the USER is connecting to is hosted behind CE2. What action resolves the issues on R3 and R4 routers?

   • AApply low Local Preference on R4 toward R2.
   • BApply high Local Preference on R3 toward R1.
   • CSet R4 as a route reflector for R3 and CE2.
   • DSet R3 as a route reflector for R4 and CE1.

   Show answer

   Answer: C

   Explanation

   for me the Correct answer is C : if R2 is down, user prefixes are advertised from IG to R1, then R1 to R3 , then R3 to R4 ( from EBGP to IBGP), then since R4 is RR to CE2 it advertise the prefixe to CE2, from other way(prefixe of appli behind CE2), CE2 advertise to R4(IBGP), then R4 advertise to R3(since RR), then R3 to R1 (from ibgp to ebgp), R1 to IG.

   Source: Adapted from community discussion — 12_sdeEQ

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2. Question 172 · 377 in bank

   

   Refer to the exhibit. An ISP engineer configured a VRF to isolate traffic for the customer ciscotest as shown. Now, the engineer must implement the Intra-AS VPN feature on PE1 to pass traffic between customer sites. Which additional configuration must the engineer apply to PE1 to meet this requirement?

   • Arouter bgp 64525 address-family ipv4 unicast neighbor 192.168.1.1 remote-as 64520 update-source Loopback0 address-family ipv4 unicast
   • Brouter bgp 64525 address-family vpnv4 unicast neighbor 192.168.1.1 remote-as 64525 update-source Loopback0 address-family vpnv4 unicast
   • Crouter bgp 64525 address-family ipv4 unicast neighbor 192.168.1.1 remote-as 64526 address-family ipv4 unicast
   • Drouter bgp 64525 address-family vpnv4 unicast neighbor 192.168.1.1 remote-as 64516 update-source Loopback0 address-family vpnv4 unicast

   Show answer

   Answer: B

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3. Question 173 · 377 in bank

   

   Refer to the exhibit. A network engineer at ISP-B must advertise 198.19.100.0/24 `" 198.19.105.0/24 prefixes to ISP-A with these requirements: ✑ Prefixes 198.19.100.0/24 `" 198.19.102.0/24 must have the community set to 64602:10. ✑ Prefixes 198.19.103.0/24 `" 198.19.105.0/24 must have the community set to 64602:11. The AS_PATH for the 198.19.103.0/24 `" 198.19.105.0/24 prefixes must appear as `64602 64602` in ASN 64601.

   

   Which configuration must the engineer implement on the ISP-B router to meet the requirements?

   • Aconfigure terminal access-list 30 deny 198.19.100.0 0.0.0.255 access-list 30 deny 198.19.101.0 0.0.0.255 access-list 30 deny 198.19.102.0 0.0.0.255 ! route-map ASN-64601-OUT permit 10 match ip address 30 set as-path prepend 64602 64602 set community 64602:11 route-map ASN-64601-OUT permit 20 set community 64602:10 end
   • Bconfigure terminal access-list 30 deny 198.19.103.0 0.0.0.255 access-list 30 deny 198.19.104.0 0.0.0.255 access-list 30 deny 198.19.105.0 0.0.0.255 ! route-map ASN-64601-OUT deny 10 match ip address 30 set as-path prepend 64602 set community 64602:11 route-map ASN-64601-OUT permit 20 set community 64602:10 end
   • Cconfigure terminal access-list 30 deny 198.19.100.0 0.0.0.255 access-list 30 deny 198.19.101.0 0.0.0.255 access-list 30 deny 198.19.102.0 0.0.0.255 access-list 30 permit any ! route-map ASN-64601-OUT permit 10 match ip address 30 set as-path prepend 64602 set community 64602:11 route-map ASN-64601-OUT permit 20 set community 64602:10 end
   • Dconfigure terminal access-list 30 deny 198.19.100.0 0.0.0.255 access-list 30 deny 198.19.101.0 0.0.0.255 access-list 30 deny 198.19.102.0 0.0.0.255 access-list 30 permit any ! route-map ASN-64601-OUT permit 10 set community 64602:10 ! route-map ASN-64601-OUT permit 20 match ip address 30 set as-path prepend 64602 64602 set community 64602:11 end

   Show answer

   Answer: C

   Explanation

   C. access-list 30 will match ==> 103-105 subnets route-map ASN-64601-OUT permit 10 ==> applies to 103-105 subnets route-map ASN-64601-OUT permit 20 ==> applies to 100-102 subnets configure terminal access-list 30 deny 198.19.100.0 0.0.0.255 access-list 30 deny 198.19.101.0 0.0.0.255 access-list 30 deny 198.19.102.0 0.0.0.255 access-list 30 permit any route-map ASN-64601-OUT permit 10 match ip address 30 set as-path prepend 64602 set community 64602:11 route-map ASN-64601-OUT permit 20 set community 64602:10 end

   Source: Adapted from community discussion — ccie_race

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4. Question 174 · 377 in bank

   

   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 requirement?

   • AReset the LDP session between R4 and R6.
   • BImplement an LDP targeted session with R4 on R6.
   • CEnable Link LDP on R4 and R6.
   • DConfigure LDP Session Protection on R4.

   Show answer

   Answer: D

   Explanation

   SP (session protection) is shown to be configured on R6 but "session recovery failed" for R4 so needs to be configured on R4.

   Source: Adapted from community discussion — thejag

   References

   • RFC Editor

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5. Question 175 · 377 in bank

   Select 2

   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.)

   • AAllow port 3505 in the outbound direction only.
   • BAllow the ICMP protocol only.
   • CAllow the TCP and UDP protocols.
   • DAllow the UDP protocol only.
   • EAllow port 3503 in the inbound direction only.

   Show answer

   Answer: DE

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6. Question 176 · 377 in bank

   What is a feature of model-driven telemetry?

   • AIt occasionally streams to multiple servers in the network.
   • BIt is less secure because it uses community strings.
   • CIt uses the pull model to send requested data to a client when polled.
   • DIt uses the push model to stream data to desired destinations.

   Show answer

   Answer: D

   Explanation

   Model-driven telemetry is a new approach for network monitoring in which data is streamed from network devices continuously using a push model and provides near real-time access to operational statistics.

   Source: Adapted from community discussion — Basuche

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7. Question 177 · 377 in bank

   DRAG DROP - Drag and drop the descriptions from the left onto the corresponding OS types on the right. Select and Place:

   

   This is an interactive task on the real exam — a drag-and-drop, hotspot or ordering question. There is nothing to select here, so the answer is shown below for reference.

   Show the answer figure

   Answer: See figure below

   

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8. Question 178 · 377 in bank

   

   Refer to the exhibit. The link between Office A and Office B is running at 90% load, and occasionally the CPU on router R1 is overloaded. The company implemented QoS for business-critical applications at both offices as a temporary solution. A network engineer must update the R1 configuration to 600 ms to reduce CPU load and limit downtime after connection failure to avoid data loss. Which action meets this requirement?

   • AConfigure the fast-hello feature for OSPF with the command ip ospf dead-interval minimal hello-multiplier 3.
   • BConfigure BFD demand mode with the command bfd-demand timer 150 interval 250 retransmit 5.
   • CConfigure BFD non-echo mode with the command echo interval 250 minimal 300 echo-multiplier 2.
   • DConfigure BFD echo mode with the command bfd interval 150 min_rx 200 multiplier 3.

   Show answer

   Answer: D

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9. Question 179 · 377 in bank

   

   Refer to the exhibit. A network engineer is configuring a new router for iBGP to improve the capacity of a growing network. The router must establish an iBGP peer relationship with its neighbor. The underlay network is already configured with the correct IP addresses. Which step should the engineer apply to complete this task?

   • AImplement multicast routing on the router to support BGP hellos.
   • BConfigure the AS number for the router to share with its iBGP peers.
   • CConfigure the new router as an iBGP route reflector to support multiple iBGP peers.
   • DActivate the BGP peers under the correct address family on the router.

   Show answer

   Answer: D

   Explanation

   99% for C and 1% for D; the goal of this task is to install new router to support a growing network, this indicate this will be a route reflector. 1% for D since it's correct as well and needed any way for this task.

   Source: Adapted from community discussion — Mo_El

   References

   • cisco.com documentation

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10. Question 180 · 377 in bank

    

    Refer to the exhibit. The application server in the data center hosts voice, video, and data applications over the internet. The data applications run more slowly than the voice and video applications. To ensure that all applications run smoothly, the service provider decided to implement a QoS policy on router PER 2 to apply traffic shaping. Which two actions must an engineer take to implement the task? (Choose two.)

    • AConfigure the scheduling function to handle delayed packets.
    • BEnable packet remarking for priority traffic.
    • CConfigure a queue to buffer excess traffic.
    • DSet the token value for secondary traffic.
    • ESet a threshold to discard excess traffic.

    Show answer

    Answer: A

    References

    • Cisco documentation

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350-501 practice, question 171. 377 questions available.