Cisco 300-410 Online Practice Questions and Exam Preparation

Cisco 300-410 Online Questions & Answers

• Question 791:

  Refer to the exhibit.

  

  Routers R1 and R2 have established a network adjacency using EIGRP, and both routers are advertising subnets to its neighbor. After issuing the show ip EIGRP topology all-links command in R1, some prefixes are not showing R2 as a successor. Which action resolves the issue?

  A. Configure the network statement on the neighbor.
  B. Rectify the incorrect router ID in R2.
  C. Resolve the incorrect metric on the link.
  D. Enable split-horizon.
  A. Configure the network statement on the neighbor.

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• Question 792:

  Consider the following output of the show ip bgp summary command:

  

  Which of the following neighbors have an established connection with RouterA?

  A. 10.1.1.1
  B. 10.2.1.1
  C. 10.3.1.1
  D. 10.4.1.1
  E. 10.5.1.1
  B. 10.2.1.1

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  The neighbor with the IP address 10.2.1.1 has an established connection with RouterA. This is because the State/PfxRcd value for this neighbor is a number, 15, which indicates the number of prefixes received by RouterA from the neighbor. The prefixes are exchanged between BGP neighbors through the update message, which can be transmitted only if an established connection exists between the neighbors. An established connection exists between two neighbors if the local router is in Open Confirm

  state and it receives a KEEPALIVE or an UPDATE message.

  The connection between RouterA and the neighbor with the IP address 10.1.1.1 is not established. This is because the State/PfxRcd value for this neighbor is OPENSENT. In this state, RouterA sends an OPEN message to a neighbor to determine the parameters for establishing a connection. The OPENSENT state occurs before the connection is established.

  The connection between RouterA and the neighbor with the IP address 10.3.1.1 is not established. This is because the State/PfxRcd value for this neighbor is IDLE. In this state, RouterA does not accept any incoming connections from the neighbor.

  The connection between RouterA and the neighbor with the IP address 10.4.1.1 is not established. This is because the State/PfxRcd value for this neighbor is ACTIVE. In this state, RouterA is attempting to establish a BGP peering session but it is not yet complete.

  The connection between RouterA and the neighbor with the IP address 10.5.1.1 is not established. This is because the State/PfxRcd value for this neighbor is OPENCONFIRM. In this state, RouterA waits for a KEEPALIVE or NOTIFICATION message from the neighbor.

  Objective:

  Layer 3 Technologies

  Sub-Objective:

  Describe, configure, and verify BGP peer relationships and authentication

  References:

  Cisco IOS IP Routing: BGP Command Reference > show ip bgp summary

• Question 793:

  The exhibit contains portions of RouterA's BGP configuration and IP routing table.

  

  Which IP network addresses, that were not learned using BGP, will be present in BGP advertisements from RouterA?

  A. 172.16.0.0/16
  B. 172.16.16.0/24
  C. 172.16.24.0/20
  D. No IGP networks will be advertised because synchronization is disabled.
  A. 172.16.0.0/16

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  The auto-summary command can affect which networks, identified by using the network command, will be advertised. Using the existing BGP configuration, the router will not announce the 172.16.16.0/24 subnet. Instead, it will announce the classful address 172.16.0.0/16 when the IP routing table maintained by the IGP contains any subnet of that classful address.

  The network command directly affects what network is advertised in BGP. If the network command does not also include a network mask, and if auto-summary is enabled, the classful address of 172.16.0.0/16 is advertised any time that the router learns about a 172.16.0.0 subnet via its Interior Gateway Protocol (IGP), such as OSPF or EIGRP. In the exhibit, the routing table does contain entries of the 172.16.16.0/24 and 172.16.24.0/24 subnets that were learned by using the IGP.

  If auto-summary is disabled by using the no auto-summary command, only networks in the routing table that are exact matches to the network commands are advertised. For example, to have the router announce only the 172.16.16.0/24 subnet learned via its IGP, you should alter the network command's IP address and include the subnet mask as follows:

  network 172.16.16.0 mask 255.255.255.0

  A combination of network statements and route statements can be used to advertise a subset of networks that exist. Examine the output shown below:

  router bgp 68410

  network 192.168.24.0 255.255.252.0

  neighbor 172.16.8.5 remote-as 68441

  ip route 192.168.24.0 255.255.252.0 null 0

  The router is configured to advertise a summary route to the network 192.168.24.0 255.255.252.0. Consider the following networks: 192.168.24.0/24 192.168.25.0/24

  192.168.26.0/24 192.168.32.0/24 If this router was connected to those networks, and received a packet destined for 192.168.25.1, it would successfully route the packet because the summary address (where the summarization is the result of the mask 255.255.252.0) is designed to include all of the subnets above except for 192.168.32.0/24. Therefore, all subnets except 192.168.32.0/24 will be advertised by the network and ip route statements with the summary mask.

  Note: Whenever changes are made to a routing policy or to an access list that is used by a routing policy, the change will not be reflected in the routing tables of the receiving routers until the BGP session has been cleared with the clear ip bgp command.

  The BGP synchronization rule specifies that networks will not be advertised or used via iBGP unless it also has been learned through an IGP. If synchronization is disabled, iBGP will advertise a network without also learning it through an IGP.

  Objective:

  Layer 3 Technologies

  Sub-Objective:

  Configure and verify eBGP (IPv4 and IPv6 address families)

  References:

  Cisco IOS Master Command List > a through b > BGP Commands: A through B > auto-summary (BGP) Cisco > Cisco IOS IP Routing: BGP Command Reference > router bgp Cisco > Cisco IOS IP Routing: BGP Command Reference > network (BGP and multiprotocol BGP)

• Question 794:

  Which of the following are valid restrictions when configuring Control Plane Policing (CoPP) on Cisco devices? (Choose two.)

  A. You cannot use the "log" keyword with CoPP on the access list entries
  B. CEF must be disabled
  C. The only match types supported with CoPP is ip precedence, ip dscp, and access-group
  D. Only standard access-lists are supported.
  A. You cannot use the "log" keyword with CoPP on the access list entries
  C. The only match types supported with CoPP is ip precedence, ip dscp, and access-group

• Question 795:

  Which configuration feature should be used to block rogue router advertisements instead of using the IPv6 Router Advertisement Guard feature?

  A. VACL blocking broadcast frames from nonauthorized hosts
  B. IPv4 ACL blocking route advertisements from nonauthorized hosts
  C. PVLANs with promiscuous ports associated to route advertisements and isolated ports for nodes
  D. PVLANs with community ports associated to route advertisements and isolated ports for nodes
  C. PVLANs with promiscuous ports associated to route advertisements and isolated ports for nodes

• Question 796:

  What is a characteristic of IPv6 RA Guard?

  A. It filters rogue RA broadcasts from connected hosts.
  B. It is supported on the egress direction of the switch.
  C. RA messages are allowed from the host port to the switch.
  D. It is unable to protect tunneled traffic.
  D. It is unable to protect tunneled traffic.

• Question 797:

  Refer to the exhibit.

  

  An engineer configured NetFlow on R1, but the flows do not reach the NMS server from R1. Which configuration resolves this Issue?

  A. R1(config)#flow monitor FlowMonitort1 R1(config-flow-monitor)#destination 10.66.66.66
  B. R1(config)#interface Ethernet0/0 R1(config-if)#ip flow monitor Flowmonitor1 input R1(config-if)#ip flow monitor Flowmonitor1 output
  C. R1(config)#interface Ethernet0/1 R1(config-if)#ip flow monitor Flowmonitor1 input R1(config-if)#ip flow monitor Flowmonitor1 output
  D. R1(config)#flow exporter FlowExporter1 R1(config-flow-exporter)#destination 10.66.66.66
  D. R1(config)#flow exporter FlowExporter1 R1(config-flow-exporter)#destination 10.66.66.66

• Question 798:

  You want to change the Administrative Distance of external EIGRP routes from the default of 170 to 130 instead on router R1 while leaving the default AD value for internal EIGRP routes. Which set of command will accomplish this?

  A. R1(config)#router eigrp R1(config-router)#distance 170
  B. R1(config)#router eigrp 1 R1(config-router)#distance eigrp 90 130
  C. R1(config)#router eigrp 1 R1(config-router)#distance eigrp 130 90
  D. R1(config)#router eigrp 1 R1(config-router)#distance 90 130
  B. R1(config)#router eigrp 1 R1(config-router)#distance eigrp 90 130

• Question 799:

  Refer to the exhibit.

  

  The R1 OSPF neighbor is not receiving type 5 external LSAs for 132.108.2.0/24 and 132.108.3.0/24 networks. Which configuration command resolves the issue?

  A. access-list 1 permit 132.108.0.0 0.0.1.255
  B. access-list 1 permit 132.108.0.0 0.0.3.255
  C. access-list 1 permit 132.108.2.0 0.0.0.255
  D. access-list 1 permit 132.108.4.0 0.0.3.255
  B. access-list 1 permit 132.108.0.0 0.0.3.255

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• Question 800:

  Refer to the exhibit.

  

  An engineer investigates an IPv6 EIGRP neighbor adjacency issue where the neighbors are flapping and issues a ping from R1 to its directly connected neighbor. The link between the switches is stable at Layer 2, and other connected devices are also functioning. Which action resolves the issue?

  A. The switch between the two neighbors is not IPv6 compatible and must be replaced with an IPv6-compatible device.
  B. Data is not reliably transmitted between the dynamically assigned link-local addresses of the routers and must be manually assigned.
  C. Multicast packets are not reliably transmitted over the link, and the switch must be replaced.
  D. The switch between the two neighbors is not configured for IPv6 multicast and must be configured for IPv6 multicast.
  C. Multicast packets are not reliably transmitted over the link, and the switch must be replaced.

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