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NEW QUESTION # 119
Refer to the exhibit.
A network administrator implemented MPLS LDP changes on PE-A LSR device. The engineer must ensure there are no LDP peer are fully operational. Which LDP feature must the engineer apply to the existing configuration to eliminate the problem?
- A. Configure MPLS LDP NSR for all LDP sessions.
- B. Disable IP CEF on routers running LDP and enable LDP.
- C. Enable LDP session protection under the routing protocol.
- D. Configure MPLS LDP IGP synchronization on the network.
Answer: A
Explanation:
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/msp/configuration/xe-3s/mp-ha-xe-3s-book/mp-nsr-ldp-supp.pdf
NEW QUESTION # 120
How is RSVP used with MPLS traffic engineering tunnels?
- A. It assigns a tag to a packet as it travels through the tunnel.
- B. It removes and reassigns an MPLS label when the packet enters the tunnel.
- C. It reserves bandwidth along the path of the tunnel.
- D. It reduces the CPU burden when a packet travels through the tunnel.
Answer: C
NEW QUESTION # 121
Refer to the exhibit.
What is the result of this configuration?
- A. Router 1 and the TACACS+ server maintain one open connection between them only when network administrator is accessing the router with password ciscotest.
- B. Router 1 and the TACACS+ server maintain one open connection between them.
- C. Router 1 opens and closes a TCP connection to the TACACS+ server every time a user requires authentication.
- D. Router 1 opens and closes a TCP connection to the TACACS+ server every time a user requires authorization.
Answer: B
Explanation:
In the given configuration, "tacacs-server host 192.168.1.2 single-connection" indicates that Router 1 will maintain a single connection to the TACACS+ server at IP address 192.168.1.2 for multiple authorization requests instead of opening a new connection for each request. This can be efficient in scenarios where there are frequent authorization requests as it reduces the overhead associated with establishing a new TCP connection each time.
References := Implementing and Operating Cisco Service Provider Network Core Technologies
NEW QUESTION # 122
In an EVPN operation, how does the PE determine and advertise Ethernet segment reachability?
- A. The PE discovers and shared routing information for the B-MAC addresses associated with local Ethernet segments.
- B. The PE discovers the remote PEs in the EVI and builds a flood list linked with the EVI.
- C. The PE discovers other PEs in the same Ethernet segment and elects a DF.
- D. The PE discovers remote ESIs and determines their redundancy mode.
Answer: D
Explanation:
In an EVPN operation, the PE (Provider Edge) router determines and advertises Ethernet segment reachability by discovering remote ESIs (Ethernet Segment Identifiers) and determining their redundancy mode (all-active or single-active). This is crucial in multihoming scenarios where the PE needs to auto-discover remote PEs and the corresponding redundancy mode. In case of segment failures, PEs withdraw the routes used at this stage to trigger fast convergence by signaling a MAC mass withdrawal on remote PEs3.
:
Cisco, "EVPN Configuration Guide for Cisco 8000 Series Routers, IOS XR Release 7.11.x" Huawei, "Overview of EVPN - New IP Technologies"
NEW QUESTION # 123
Refer to the exhibits:
R1 and R2 are directly connected and IS-IS routing has been enabled between R1 and R2 R1 message periodically Based on this output, which statement is true?
- A. IS-IS neighbor authentication is failing for Level 1 PDUs only
- B. 1S-1S neighbor authentication is failing for Level 1 and Level 2 PDUs .
- C. IS-IS neighbor authentication is failing for Level 2 PDUs only.
- D. IS-IS neighbor authentication is failing for Level 2 first and then for Level 1 PDUs
Answer: A
NEW QUESTION # 124
Refer to the exhibit:
Which statement supports QPPB implementation?
- A. QoS policies rely exclusively on BGP attributes to manipulate traffic
- B. QPPB policies affect only egress traffic
- C. QoS policies use BGP to gain full coverage on the network.
- D. QoS policies are identified in the MPLS forwarding table
Answer: C
Explanation:
QPPB (QoS Policy Propagation via BGP) is a mechanism that allows the application of QoS policies using IP precedence or QoS group settings based on BGP community lists, AS paths, and prefix lists. In the context of the exhibit provided, it's clear that QPPB is being used to apply a specific QoS policy (qos-group 10) based on AS path attributes. This aligns with option C, as it indicates that QoS policies are utilizing BGP to achieve comprehensive network coverage.
NEW QUESTION # 125
Refer to the exhibit.
An engineer is reviewing the BGP configuration. Which routes must be advertised to 10.10.10.1
- A. Local routes are denied, and routes from other ASNs are permitted.
- B. All routes whether local or from other ASNs are permitted.
- C. All routes whether local or from other ASNs are denied.
- D. Local routes are permitted, and routes from other ASNs are denied.
Answer: B
NEW QUESTION # 126
Refer to the exhibit. The operations team is implementing an LDP-based configuration in the service provider core network with these requirements:
- R1 must establish LDP peering with the loopback IP address as its Router-ID.
- Session protection must be enabled on R2.
How must the team update the network configuration to successfully enable LDP peering between R1 and R2?
- A. Change the LDP password on R2 to Cisco.
- B. Configure LDP session protection on R1.
- C. Configure mpls ldp router-id loopback0 on R1 and R2.
- D. Change the discover hello hold time and interval to their default values.
Answer: C
NEW QUESTION # 127
Refer to the exhibit:
An engineer wants to authenticate the OSPF neighbor between PEA and PE-B using MD5.
Which command on PE-B successfully completes the configuration?
- A.
- B.
- C.
- D.
Answer: A
Explanation:
The correct command to authenticate the OSPF neighbor between PE-A and PE-B using MD5 is found in Option A. In this option, the command ip ospf message-digest-key 1 md5 44578611 is used to configure OSPF MD5 authentication on an interface with the key ID as 1 and key string as 44578611. The second command ip ospf authentication key-chain 44578611 is used to enable OSPF authentication on an interface and associate it with a specific key chain. References := Cisco - Implementing and Operating Cisco Service Provider Network Core Technologies
NEW QUESTION # 128
Refer to the exihibit.
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.)
- A. Configure a queue to buffer excess traffic.
- B. Set the token value for secondary traffic.
- C. Set a threshold to discard excess traffic.
- D. Configure the scheduling function to handle delayed packets.
- E. Enable packet remarking for priority traffic.
Answer: A,D
NEW QUESTION # 129
Which MPLS design attribute can you use to provide Internet access to a major customer through a separate dedicated VPN?
- A. The Internet gateway router is connected as a PE router to the MPLS backbone.
- B. The customer that needs the Internet access service is assigned to the same RTs as the Internet gateway
- C. The CE router supports VRF-Ute and the full BGP routing table.
- D. The Internet gateway inserts the full Internet BGP routing table into the Internet access VPN
Answer: B
NEW QUESTION # 130
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?
- A. The neighbor relationship will be up only if the two devices have activated the correct neighbor relationships under the IPv4 address family
- B. The neighbor relationship is up
- C. The neighbor relationship is down because R1 believes R2 is in AS 65012.
- D. The neighbor relationship is down because the loco I-as value for R2 is missing in the R1 neighbor statement
Answer: A
NEW QUESTION # 131
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?
- A. traceroute mpls multipath ipv4 10.10.10.4 255.255.255.255 verbose
- B. traceroute mpls ipv4 10.10.10.4 255.255.255.255 verbose
- C. traceroute mpls ipv4 10.10.10.4 255.255.255.255 source 10.10.10.1
- D. traceroute mpls multipath ipv4 10.10.10.4 255.255.255.255
Answer: D
NEW QUESTION # 132
Refer to the exhibit:
This configuration is being applied on an IOS XR router.
Which statement about this configuration is true?
- A. It is used to identify MIB entries and has a list of YANG models
- B. It is used to identify traps for SNMP polling
- C. It is used to create a subscription to specify the streaming interval
- D. It is used to create a sensor-group and has a list of YANG models for streaming
Answer: D
NEW QUESTION # 133
Refer to the exhibit. A large enterprise has multiple branch offices that span several geographic regions. The enterprise runs MPLS within the core to propagate VPNv4 routes using BGP. After a recent series of DDoS attacks disrupted the network, a network engineer has been asked to reconfigure BGP to help mitigate future attacks. Which configuration must the engineer apply?
- A.
- B.
- C.
- D.
Answer: A
NEW QUESTION # 134
......
Exam Overview
The Cisco 350-501 test is 2 hours long and you will need to clear about 100 multiple-choice questions. To pass it, it is required that you get at least 825 points after answering the questions. The exam will cost you $400, but the price can vary according to the country you live in. Thus, because of the possible taxes, you can pay less or more for the application.
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