Cisco 300-410 Online Practice Questions and Exam Preparation

Cisco 300-410 Online Questions & Answers

• Question 921:

  Refer to the exhibit.

  

  A company is evaluating multiple network management system tools. Trending graphs generated by SNMP data are returned by the NMS and appear to have multiple gaps. While troubleshooting the issue, an engineer noticed the relevant output. What solves the gaps in the graphs?

  A. Remove the exceed-rate command in the class map.
  B. Remove the class map NMS from being part of control plane policing.
  C. Configure the CIR rate to a lower value that accommodates all the NMS tools
  D. Separate the NMS class map in multiple class maps based on the specific protocols with appropriate CoPP actions
  D. Separate the NMS class map in multiple class maps based on the specific protocols with appropriate CoPP actions

  ---

  The class-map NMS in the exhibit did not classify traffic into specific protocols so many packets were dropped. We should create some class-map to classify the receiving traffic. It is also a recommendation of CoPP/CPP policy: "Developing a CPP policy starts with the classification of the control plane traffic. To that end, the control plane traffic needs to be first identified and separated into different class maps."

  https://tools.cisco.com/security/center/resources/copp_best_practices

• Question 922:

  Your network team is assessing options available to translate IPv6 address to IPv4 addresses.

  In which of the following scenarios is stateless NAT64 NOT supported as a solution?

  A. translating from an IPv4 network to an IPv6 network
  B. translating from an IPv6 network to an IPv4 network
  C. translating from the IPv6 Internet to an IPv4 network
  D. translating from an IPv6 network to the IPv4 Internet
  C. translating from the IPv6 Internet to an IPv4 network

  ---

  Stateless NAT64 does not support translating from the IPv6 Internet to an IPv4 network. NAT64 is a version of network address translation that translates IPv6 address to IPv4 and vice versa. It has two variants, stateless and stateful. In stateless translation, mappings are created using an algorithm, but those mappings are not maintained while translation is being performed. Stateful NAT64 both creates and maintains mappings during translation.

  Due to the fact it does not maintain mappings, stateless NAT64 supports all of the options given except translating from the IPv6 Internet to an IPv4 network.

  Objective:

  Infrastructure Services

  Sub-Objective:

  Describe IPv6 NAT

  References:

  Home > Products and services > Cisco IOS and NX-OS software > Cisco IOS technologies > Enterprise ipv6 solution > Data sheets and literature > White papers > NAT64 Technology: Connecting IPv6 and IPv4 Networks > Technologies Facilitating IPv6/IPv4 Translation

• Question 923:

  Refer to the exhibit. Although summarization is configured for R1 to receive 10.0.0.0/8. more specific routes are received by R1. How should the 10.0.0.0/8 summary route be received from the neighbor, attached to R1 via Fast Ethernet0/0 interface?

  

  A. R1 should configure the ip summary-address eigrp 10.0.0.0.255.0.0.0 command under the Fast Ethernet 0/0 interface.
  B. The summarization condition is not met Router 10.1.100.10 requires a route for 10 0.0.0/8 that points to null 0
  C. The summarization condition is not met. The network 10.1.100.0/24 should be changed to 172.16.0.0/24.
  D. R1 should configure the ip summary-address eigrp 10.0.0.0 0.0.0.255 command under the Fast Ethernet 0/0 interface.
  D. R1 should configure the ip summary-address eigrp 10.0.0.0 0.0.0.255 command under the Fast Ethernet 0/0 interface.

  ---

• Question 924:

  Refer to the exhibit.

  

  An engineer Is troubleshooting a routing loop on the network to reach the 172.16.3.0/16 from the OSPF domain. Which configuration on router R1 resolves the Issue?

  

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

• Question 925:

  Consider the following diagram. All PVCs are active.

  

  If the partial output of the show ip ospf neighbor command executed on Router A is as follows, which of the following statements is TRUE?

  RouterA# show ip ospf neighbor

  Neighbor ID Pri State Dead Time Address Interface

  1.1.1.1

  1 FULL/DROTHER 00:00:13 10.20.10.21 SerialO

  2.2.2.2

  1 FULL/DR 00:00:51 10.20.10.22 SerialO

  A. Router C and Router B will fail to have all OSPF routes in their tables.
  B. All routing tables will be populated correctly.
  C. Router A will be the DR.
  D. Router C will be the DR.
  A. Router C and Router B will fail to have all OSPF routes in their tables.

  ---

  The output of the command shows that Router C and Router B will fail to have all OSPF routes in their tables. In a hub and spoke configuration, as depicted in the diagram, the hub router (Router A) should be the designated router (DR) or the source of updates to the other routers. However, Router B is the DR, as evidenced by the output of the show ip ospf neighbor command executed on Router A. This situation could be rectified by setting Routers B and C with a priority of 0, which would disqualify them

  from being the DR. After that, all routes could be distributed from the hub, which would have visibility of all routes.

  All routing tables will be populated correctly until the hub router is made the DR.

  Neither Router A nor C will be the DR, since it is indicated that Router B is the DR in the output of the command.

  Objective:

  Layer 3 Technologies

  Sub-Objective:

  Configure and verify OSPF operations

  References:

  Cisco > Home > Support > Support Technology > Support > IP Routing > Configure > Configuration Examples and Technotes > Initial Configurations for OSPF over Frame Relay Subinterfaces Cisco > Cisco IOS Wide-Area Networking Command Reference > frame-relay lapf n201 through fr-atm connect dlci > frame-relay map

  Cisco > Cisco IOS IP Routing: OSPF Command Reference > ip ospf network

• Question 926:

  Which of the following correctly describes the concept of split horizon with IP routing? (Choose two.)

  A. Split horizon is a valid routing loop prevention mechanism
  B. Split horizon is used to filter customer routes in an ISP network.
  C. When enabled, split horizons informs the router to not advertise routes back out the same interface from where that route was originally received.
  D. Split horizons cannot be disabled on WAN interfaces
  E. Split horizon is not applicable to EIGRP networks
  A. Split horizon is a valid routing loop prevention mechanism
  C. When enabled, split horizons informs the router to not advertise routes back out the same interface from where that route was originally received.

• Question 927:

  Which of the following statements are TRUE about manually configured IPV4-to-IP6 tunnels and GRE tunnels? (Choose two.)

  A. Manually configured tunnels use the tunnel mode ipv6ip command, while GRE tunnels use the tunnel mode gre ip command.
  B. Manually configured tunnels support IPv6 IGPs, while GRE tunnels do not.
  C. Manually configured tunnels block IPv6 multicasts, while GRE forwards them.
  D. Manually configured tunnels do not support multiple passenger protocols, while GRE tunnels support them.
  A. Manually configured tunnels use the tunnel mode ipv6ip command, while GRE tunnels use the tunnel mode gre ip command.
  D. Manually configured tunnels do not support multiple passenger protocols, while GRE tunnels support them.

  ---

  The following statements are TRUE about manually configured tunnels and GRE tunnels:

  Manually configured tunnels use the tunnel mode ipv6ip command, while GRE tunnels use the tunnel mode gre ip command.

  Manually configured tunnels do not support multiple passenger protocols, while GRE tunnels support them.

  Manually configured tunnels and Generic Routing Encapsulation (GRE) tunnels are static point-to-point tunneling methods. Both of these tunneling methods provide a permanent link between two IPv6 networks that are separated by an IPv4 backbone. For each link between two IPv6 networks, a separate tunnel needs to be created.

  Manually configured tunnels use a particular passenger protocol and do not support multiple passenger protocols at the same time. However, GRE tunnels can simultaneously use various passenger protocols.

  It is incorrect to state that manually configured tunnels support IPv6 IGPs, while GRE tunnels do not. GRE tunnels also support IPv6 IGPs, such as OSPF, RIP, and IS-IS.

  It is incorrect to state that manually configured tunnels block IPv6 multicasts, while GRE forwards them.

  Manually configured tunnels also forward IPv6 multicasts.

  Objective:

  Network Principles

  Sub-Objective:

  Recognize proposed changes to the network

  References:

  Cisco IOS IPv6 Configuration Guide, Release 12.4 > Implementing Tunneling for IPv6 > Configuration Examples for Implementing Tunneling for IPv6 > Example: Configuring Manual IPv6 Tunnels

• Question 928:

  Which commands will display the feasible successors, the feasible distance, and the advertised distance for networks learned by a router?

  A. show ip eigrp topology
  B. show ip route
  C. show bgp neighbors
  D. show ip eigrp traffic
  E. show ip route eigrp
  A. show ip eigrp topology

  ---

  To view the feasible successors, the feasible distance, and the advertised distance, you would use the show ip eigrp topology command. A sample output of this command is below.

  

  The table lists all routes to networks and their advertised distance and feasible distance. This information is used to select the successor and feasible successor for each network. Before a route can be considered as a feasible successor or backup, the feasible distance of the route must be a larger value than the advertised distance.

  The following information can be extracted from this output:

  The route 15.10.0.0/16 has a feasible successor. If you examine the feasible and advertised distances in the brackets next to the two potential feasible successor routes [feasible distance/advertised distance], you will see that for the route 15.10.0.0/16 via 10.10.5.1, the feasible distance of the route is greater (2594586) than the advertised distance (2448152), which qualifies it as a feasible successor. The route 65.0.0.0/8 does not have a feasible successor. The route 65.0.0.0/8 via 10.20.1.6 has a feasible

  distance (2589779) that is less than the advertised distance (2672569), so it does not qualify.

  The router at 10.20.0.1 is directly connected to the networks 65.0.0.0/8 and 150.10.0.0/16. This can be deduced by the fact that the address 10.20.0.1 is the source of the successor routes for those networks. The route to 200.10.10.0/24 is undergoing recomputation, as evidenced by the line FD is Inaccessible. It also tells you that Router2 sent a query to 10.1.1.2 and is waiting for a reply, as evidenced by the line Remaining replies: via 10.1.1.2, r, Serial 0. The route to the 10.0.0.0/8 network is showing a

  convergence problem, as evidenced by the code SIA to the left of its entry. This stands for Stuck In Active. An active state is present when the local router has queried for a new route to the network. Stuck in Active occurs when no response has been received, and the local router marks it SIA.

  The show ip route and the show ip route eigrp commands simply display the routing table, which does not display the advertised distance. Below is an example of the show ip route command executed on a router running EIGRP:

  

  The show ip eigrp traffic command does not show feasible successors, feasible distance or advertised distance. It displays statistics on hellos, updates, queries, replies and acknowledgments. Sample output is shown below:

  Router# show ip eigrp traffic

  IP-EIGRP Traffic Statistics for process 100

  Hellos sent/received: 215/212

  Updates sent/received: 7/25

  Queries sent/received: 2/0

  Replies sent/received: 0/2

  Acks sent/received: 21/17

  The show ip bgp command displays information involving BGP and has nothing to do with EIGRP.

  Objective:

  Layer 3 Technologies

  Sub-Objective:

  Configure and verify policy-based routing

  References:

  Cisco IOS IP Routing: EIGRP Command Reference > show ip eigrp topology

• Question 929:

  What is considered the primary advantage of running BFD?

  A. reduction in time needed to detect Layer 3 routing neighbor failures
  B. reduction in CPU needed to detect Layer 3 routing neighbor failures
  C. reduction in time needed to detect Layer 2 switched neighbor failures
  D. reduction in CPU needed to detect Layer 2 switch neighbor failures
  A. reduction in time needed to detect Layer 3 routing neighbor failures

  ---

  https://www.cisco.com/c/en/us/td/docs/ios/12_0s/feature/guide/fs_bfd.html

  BFD can be used at any protocol layer. However, the Cisco implementation of BFD for Cisco IOS Releases 12.2(18)SXE, 12.0(31)S, and 12.4(4)T supports only Layer 3 clients, in particular, the BGP, EIGRP, IS-IS, and OSPF routing protocols.

• Question 930:

  Which next hop is going to be used for 172.17.1.0/24 ?

  

  A. 10.0.0.1
  B. 192.168.1.2
  C. 10.0.0.2
  D. 192.168.3.2
  A. 10.0.0.1

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