Cisco 350-501 Online Practice Questions and Exam Preparation

Cisco 350-501 Online Questions & Answers

• Question 461:

  A network engineer must enable the helper router to terminate the OSPF graceful restart process if it detects any changes in the LSA.

  Which command enables this feature?

  A. nsf ietf helper disable
  B. nsf cisco helper disable
  C. nsf ietf helper strict-lsa-checking
  D. nsf cisco enforce global
  C. nsf ietf helper strict-lsa-checking

  ---

  Explanation

  The command nsf ietf helper strict-lsa-checking is used to configure the router to terminate the OSPF graceful restart process if it detects any changes in the LSA during the restart. This ensures that the network remains stable and consistent by preventing the use of outdated or incorrect routing information.

  https://www.cisco.com/c/en/us/td/docs/ios/12_4t/ip_route/configuration/guide/tgrhelp.html

• Question 462:

  Which additional configuration is required for NetFlow to provide traceback information?

  A. A classification ACL must be configured to identity which type of traffic will be analyzed.
  B. The BGP routing process must be started for any ingress or egress data to be reported when using NetFlow Version 5.
  C. Cisco Express Forwarding must be configured for traffic that is egressing from the router to be property reported.
  D. LLDP must be configured or the device will be unable to locate a NetFlow analyzer.
  A. A classification ACL must be configured to identity which type of traffic will be analyzed.

  ---

  Explanation

  NetFlow provides traceback information by analyzing network traffic. To configure NetFlow for traceback, you need to set up a classification ACL (Access Control List) to identify which type of traffic will be analyzed. This allows NetFlow to focus on specific traffic flows and report relevant information. The classification ACL can be based on various criteria such as source/destination IP addresses, port numbers, or protocols. By defining the classification ACL, you ensure that only the relevant traffic is considered for NetFlow analysis.

  Implementing and Operating Cisco Service Provider Network Core Technologies (SPCOR) v1.0

• Question 463:

  An organization with big data requirements is implementing NETCONF as part of its migration to a new cloud-based environment. The organization has multiple offices across widespread geography. A network engineer is configuring NETCONF on one of the border routers.

  Which configuration must the engineer apply to save the running configuration?

  C. snmp-server community public RWsnmp-server trap link leftsnmp-server enable traps snmp authentication linkdown linkup snmp-server enable traps syslogsnmp-server manager
  D. logging history debugginglogging snmp-trap emergencieslogging snmp-trap alertslogging snmp-trap criticallogging snmp-trap errorslogging snmp-trap warningslogging snmp-trap notificationslogging snmp-trap informationlogging snmp-trap debugging
  B

  ---

  Explanation

• Question 464:

  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?

  A. Configure LDP and redistribute the route from EIGRP.
  B. Configure BGP address family VPNv4.
  C. Configure IGP and redistribute the route from BGP.
  D. Configure IGP LDP synchronization
  B. Configure BGP address family VPNv4.

  ---

  Explanation

• Question 465:

  Which is the benefit of implementing model-driven telemetry in a service provider environment?

  A. It reduces the number of network monitoring tools that are necessary to verify device statistics.
  B. It increases the efficiency of SNMP by pulling system data to requesting servers.
  C. It reduces or eliminates the need to monitor Layer 2 traffic between switches.
  D. It uses reliable transport to push Information to network monitoring tools
  D. It uses reliable transport to push Information to network monitoring tools

  ---

  Explanation

  Model-driven telemetry (MDT) in a service provider environment uses a push model to send data to network monitoring tools. This method is beneficial because it allows for the streaming of data from network devices to monitoring tools in real-time, using reliable transport mechanisms. This approach is more efficient than traditional polling methods like SNMP, as it can provide faster and more granular data updates, which is crucial for maintaining network performance and reliability.

• Question 466:

  A network engineer implements OSPF on the network and then notices frequent faults in traffic between two routers, particularly on interface TenGigE 0/0/1. The engineer decides to configure NetFlow to monitor the issue.

  Which configuration must the engineer apply to the router?

  A. interface tenGigE 0/0/1ip flow egresssnmp-server community publicsnmp-server enable traps lsdnsnmp-server host 192.168.1.27 version 2c public
  B. interface tenGigE 0/0/1ip flow ingressip flow-export version 9ip flow-cache timeout active 1
  C. ip flow-export destination 192.168.2.1 2055ip flow-export source loopback0ip flow-export version 9ip flow-cache timeout active 1ip flow-cache timeout inactive 15snmp-server ifindex persist
  D. ip flow-export destination 192.168.2.1 2055ip flow-export source loopback0ip flow-export version 9ip flow-cache timeout active 1ip flow-cache timeout inactive 15snmp-server ifindex persistinterface tenGigE 0/0/1ip flow ingress
  C. ip flow-export destination 192.168.2.1 2055ip flow-export source loopback0ip flow-export version 9ip flow-cache timeout active 1ip flow-cache timeout inactive 15snmp-server ifindex persist

  ---

  Explanation

• Question 467:

  Under which circumstance does BGP ignore the best-path algorithm after receiving multiple routes to a destination?

  A. when the routes are synchronized
  B. when the route's first hop has a different AS number
  C. when the routes have local-preference values less than 100
  D. when the route's next hop is unreachable
  D. when the route's next hop is unreachable

  ---

  Explanation

• Question 468:

  Which additional feature does MPLS DiffServ tunneling support?

  A. matching EXP and DSCP values
  B. PHB layer management
  C. using GRE tunnels to hide markings
  D. interaction between MPLS and IGP
  B. PHB layer management

  ---

  Explanation

  https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/mp_te_diffserv/configuration/15-mt/mp-te-diffserv-15-mt-book/mp-diffserv-tun-mode.html

• Question 469:

  An engineer must apply an 802.1ad-compliant configuration to a new switchport with these requirements:

  1. The switchport must tag all trame when it enters the port 2. The switchport Is expected to provide the same level of service to traffic from any customer VLAN

  Which configuration must the engineer use?

  A. interface GigabitEthernet1/0/1switchport mode trunkswitchport trunk encapsulation dot1qencapsulation ISLbridge-domain 12
  B. interface GigabitEthernet1/0/1ethernet dot1ad uni c-portservice instance 12encapsulation dot1qrewrite ingress tag push dot1ad 21 symmetricbridge-domain 12
  C. interface GigabitEthernet1/0/1ethernet dot1ad uni s-portservice instance 12encapsulation defaultrewrite ingress tag push dot1ad 21 symmetricbridge-domain 12
  D. interface GigabitEthernet1/0/1ethernet dot1ad nniservice instance 12encapsulation dot1adbridge-domain 12
  C. interface GigabitEthernet1/0/1ethernet dot1ad uni s-portservice instance 12encapsulation defaultrewrite ingress tag push dot1ad 21 symmetricbridge-domain 12

  ---

  Explanation

  https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/cether/configuration/xe-3s/asr903/16-12-1/b-ce-xe-16-12-asr900/m_ce_802_1ad_900.html

• Question 470:

  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?

  A. Configure the fast-hello feature for OSPF with the command ip ospf dead-interval minimal hello-multiplier 3.
  B. Configure BFD demand mode with the command bfd-demand timer 150 interval 250 retransmit 5.
  C. Configure BFD non-echo mode with the command echo interval 250 minimal 300 echo-multiplier 2.
  D. Configure BFD echo mode with the command bfd interval 150 min_rx 200 multiplier 3.
  D. Configure BFD echo mode with the command bfd interval 150 min_rx 200 multiplier 3.

  ---

  Explanation