Cisco 350-501 Online Practice Questions and Exam Preparation

Cisco 350-501 Online Questions & Answers

• Question 141:

  Refer to the exhibit

  

  A network engineer is implementing an OSPF configuration. Based on the output, which statement is true?

  A. OSPFv3 does not run for IPv4 on FastEthernet0/0 until IPv6 routing is enabled on the router and IPv6 is enabled on interface FastEthernet0/0.
  B. In the ospfv3 1 area 1 ipv4 command, area 0 must be configured instead of area 1.
  C. OSPFv3 cannot be configured for IPv4; OSPFv3 works only for IPv6.
  D. "IPv6 routing not enabled" is just an informational message and OSPFv3 runs for IPv4 on interface FastEthernet0/0 anyway.
  A. OSPFv3 does not run for IPv4 on FastEthernet0/0 until IPv6 routing is enabled on the router and IPv6 is enabled on interface FastEthernet0/0.

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  Explanation

  OSPFv3 does not run for IPv4 on FastEthernet0/0 until IPv6 routing is enabled on the router and IPv6 is enabled on interface FastEthernet0/0

  To enable OSPFv3 for IPv4, the following config is required:

  R1(config)#ipv6 unicast-routing R1(config-if)#ipv6 enable R1(config-if)#ospfv3 1 area 1 ipv4

  OSPFv3 uses IPv6 to discover its neighbors, if not configured there is no neighbor to establish successful negotiation. Even though we only want to configure routing for IPv4, OSPFv3 still uses IPv6 link-local addresses so we have to to enable IPv6

  -To use the IPv4 unicast address families (AF) in OSPFv3, you must enable IPv6 on a link, although the link may not be participating in IPv6 unicast AF. -With the OSPFv3 Address Families feature, users may have two processes per interface, but only one process per AF. If the AF is IPv4, an IPv4 address must first be configured on the interface, but IPv6 must be enabled on the interface. -The OSPFv3 address families feature enables both IPv4 and IPv6 unicast traffic to be supported. With this feature, users may have two processes per interface, but only one process per AF. If the IPv4 AF is used, an IPv4 address must first be configured on the interface, but IPv6 must be enabled on the interface. A single IPv4 or IPv6 OSPFv3 process running multiple instances on the same interface is not supported.

• Question 142:

  DRAG DROP

  Drag and drop the descriptions from the left onto the corresponding OS types on the right.

  Select and Place:

  

  

  Explanation

  Explanation/Reference:

  IOS XE:

  It uses linux-based kernel It has a separate control plane IOS:

  It is monolithic It shares memory space

• Question 143:

  A network operation engineer has these requirement:

  *prevent multicast transit when it is enforced by unicast stub routing.

  *Reduce the overall processing of PIM control traffic. Especially when the number of stub links increases on the stub device.

  *protect against multicast spoofing of PM designated router messages and PIM assert messages.

  Which solution meets these requirements?

  A. explicit tracking of receivers.
  B. multicast stub routing.
  C. Source Specific Multicast.
  D. PIM allow RP.
  B. multicast stub routing.

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  Explanation

• Question 144:

  Refer to the exhibit.

  

  A network engineer is implementing BGP in AS 65101 and AS 65201 R3 sends data traffic to 192.168.1.1/32 via the path R3-R2-R1. The traffic must travel via alternate path R6-R5 for prefix 192.168.1.1/32.

  Which action must be taken to meet the requirement?

  A. Apply route-map HIGH-MED out on R2 for neighbor R3
  B. Apply route-map HIGH-LP in on R3 for neighbor R6
  C. Apply route-map LOW-MED in on R5 for neighbor R2
  D. Apply route-map LOW-LP out on R2 for neighbor R3
  B. Apply route-map HIGH-LP in on R3 for neighbor R6

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  Explanation

  To ensure that traffic for the prefix 192.168.1.1/32 travels via the alternate path R6-R5, a route-map with a higher local preference should be applied inbound on R3 for neighbor R6. This will make the path through R6- R5 more preferable, thus meeting the requirement.

  References: Implementing and Operating Cisco Service Provider Network Core Technologies

• Question 145:

  Refer to the exhibit.

  

  R101 is peering with R102 and R103, and R201 is peering with R202 and R203 using iBGP Labeled Unicast address families. The OSPF area 0 border routers are in a full iBGP Labeled Unicast mesh, and VPNv4 routes are exchanged directly between PE routers R101 and R201 through iBGP

  Which address family-level configuration must be applied on ABR R102 on ABR R102 to support a Unified MPLS routing architecture with partitioned IGP domains?

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  B. Option B

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  Explanation

• Question 146:

  Refer to the exhibit.

  R1(config)# router isis area1 R1(config-router)# net 49.0001.0000.0000.000b.00

  R1(config-router)# interface loopback 0 R1(config-if)# ipv6 address 2001:0000:1001:1000::1/128 R1(config-if)# exit

  R1(config)# interface Ethernet 1/2 R1(config-if)# ipv6 address 2001:0000:1001:100A::1/64 R1(config-if)# ipv6 router isis area1 R1(config-if)# exit

  A network engineer with an employee id: 3812:12:993 has started to configure router R1 for IS-IS as shown. Which additional configuration must be applied to configure the IS-IS instance to advertise only network prefixes associated to passive interfaces?

  A. R1(config)# router isis area1R1(config-router)# passive-interface loopback 0R1(config-router)# address-family ipv6R1(config-router-af)# advertise passive-only
  B. R1(config-router)# address-family ipv6R1(config-router-af)# advertise passive-only
  C. R1(config)# router isis area1R1(config-router)# loopback 0 passive-interfaceR1(config-router)# address-family ipv6R1(config-router-af)# prc-interval 20
  D. R1(config)# router isis area 1R1(config-router)# passive-interface loopback 0
  A. R1(config)# router isis area1R1(config-router)# passive-interface loopback 0R1(config-router)# address-family ipv6R1(config-router-af)# advertise passive-only

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  Explanation

• Question 147:

  A remote operation center is deploying a set of I-BGP and E-BGP connections for multiple IOS-XR platforms using the same template. The I-BGP sessions exchange prefixes with no apparent issues, but the E-BGP sessions do not exchange routes. What causes this issue?

  A. The I-BGP neighbors are mistyped and HELLO packets cannot be exchanged successfully between routers.
  B. The E-BGP neighbors are not allowed to exchange Information due to the customer platform's default policy.
  C. A PASS ALL policy has not been implemented for the I-BGP neighbors.
  D. The next-hop-self command is not implemented on both E-BGP neighbors.
  B. The E-BGP neighbors are not allowed to exchange Information due to the customer platform's default policy.

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  Explanation

  Routing Policy Enforcement External BGP (eBGP) neighbors must have an inbound and outbound policy configured. If no policy is configured, no routes are accepted from the neighbor, nor are any routes advertised to it. This added security measure ensures that routes cannot accidentally be accepted or advertised in the case of a configuration omission error.

  https://www.cisco.com/c/en/us/td/docs/routers/asr9000/software/asr9k-r6-2/routing/configuration/guide/b-routing-cg-asr9000-62x/b-routing-cg-asr9000- 62x_chapter_010.html

• Question 148:

  A network engineer must implement SNMPv2 with these parameters

  1. Enable SNMP community string C1sc0 with read-only permissions.

  2. Enable interface index persistence.

  3. Restrict the SNMP community to only the monitoring server with IP address 198.18 19 100/32.

  4. Provide view-only access to ospflfEntry and ospfNbrEntry.

  Which configuration must the engineer apply?

  

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  A. Option A

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  Explanation

• Question 149:

  Refer to the exhibit.

  

  

  The operations team is implementing an LDP-based configuration in the service-provider core network with these requirements:

  RC must establish LDP peering with the loopback IP address as its Router ID.

  RA must establish LDP peering with RB, RC, and RY.

  How must the team update the network configuration to successfully enable LDP peering between RA and RC?

  A. Implement LDP session protection on RA.
  B. Enable the mpls ip command on RC interface Gi2/0.
  C. Reset the discover hello hold time and interval to their default values.
  D. Configure the mpls ldp router-id loopback0 command on RA and RC.
  B. Enable the mpls ip command on RC interface Gi2/0.

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  Explanation

• Question 150:

  Which protocol provides fast link failure detection for all type of encapsulation?

  A. Prefix Independent Convergence
  B. Carrier delay
  C. Non stop forwarding
  D. Bidirectional forwarding detection
  D. Bidirectional forwarding detection

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  Explanation