Cisco 300-410 Online Practice Questions and Exam Preparation

Cisco 300-410 Online Questions & Answers

• Question 521:

  Your company has implemented IPv6 addresses and routing on every host, server, and router. Recently, your company acquired another company that has an IPv4 addressing scheme for its entire network. The acquired company's network does not have any support for IPv6. You need to devise a method so that the IPv6 hosts in your company can seamlessly communicate with the IPv4 hosts of the acquired company's network. You do not want to install any additional routers, and you want minimum configuration changes on the networks. Which of the following is the best method to allow communication between the IPv4 and IPv6 hosts?

  A. Embedding IPv6 packets into IPv4 packets
  B. Translating IPv4 addresses to and from IPv6 addresses
  C. Configuring IPv6 on the hosts and routers in the IPv4 network
  D. ConfiguringIPv4 on the hosts and routers in the IPv6 network
  B. Translating IPv4 addresses to and from IPv6 addresses

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  Translating IPv4 addresses to and from IPv6 addresses is the best method to allow communication between the IPv4 and IPv6 hosts. This translation of IPv4 and IPv6 addresses is known as Network Address Translation-Protocol Translation (NAT-PT). NAT-PT is a technique available for deploying IPv6 and IPv4 addresses in a unified network. With NAT-PT, the network requires fewer modifications and software for the IPv4 and IPv6 hosts. Additionally, it provides easy and quick interoperability between the

  IPv4 and IPv6 hosts.

  NAT-PT is configured on one of the routers on the border of the IPv4 and IPv6 networks. Whenever an IPv4 packet intended for a host in the IPv6 network is received by the NAT-PT router, the router applies NAT-PT on the packet and translates all the headers in the IPv4 headers. In addition, it translates the IPv4 source and destination addresses to IPv6 source and destination addresses. The IPv6 packet is then set by the NAT-PT router to the intended IPv6 host. The NAT-PT router performs the reverse

  translation when an IPv6 host sends a packet to an IPv4 host.

  Embedding IPv6 packets into IPv4 packets is not the best method to allow communication between the IPv4 and IPv6 hosts. When IPv6 packets are embedded inside IPv4 packets, the process is referred to as tunneling. Tunneling is appropriate when two IPv6 networks are separated by an IPv4 network. When an IPv6 host of one network sends an IPv6 packet destined for a host on the other IPv6 network, an IPv4 tunnel is created between the two IPv6 networks. The IPv6 packet is then embedded into an

  IPv4 packet that traverses through the IPv4 tunnel to reach the intended IPv6 host, where the embedded packet is extracted by the recipient. In this scenario, a single IPv6 network is available; hence, a tunnel cannot be formed.

  Configuring IPv6 on the hosts and routers in the IPv4 network, or configuring IPv4 on the hosts and routers in the IPv6 network, are not the best methods to allow communication between the IPv4 and IPv6 hosts. Each of these two methods is cumbersome and not the most efficient for providing interoperability between IPv4 and IPv6 in this case. Furthermore, the IPv4 hosts on the acquired company's network do not support IPv6 as stated.

  Objective:

  Network Principles

  Sub-Objective:

  Recognize proposed changes to the network

  References:

  Cisco NAT Configuration Guide, Release 15MandT > NAT-PT for IPv6

• Question 522:

  Refer to the exhibit.

  

  Mutual redistribution is enabled between RIP and EIGRP on R2 and R5. Which configuration resolves the routing loop for the 192.168.1.0/24 network?

  A. R2: router eigrp 10 network 181.16.0.0 redistribute rip metric 1 1 1 1 1 distribute-list 1 in s1 ! router rip network 178.1.0.0 redistribute eigrp 10 metric 2 ! access-list 1 deny 192.168.1.0 access-list 1 permit any R5: router eigrp 10 network 181.16.0.0 redistribute rip metric 1 1 1 1 1 distribute-list 1 in s0 ! router rip network 178.1.0.0 redistribute eigrp 10 metric 2 ! access-list 1 deny 192.168.1.0 access-list 1 permit any
  B. R2: router eigrp 10 network 181.16.0.0 redistribute rip metric 1 1 1 1 1 distribute-list 1 in s0 ! router rip network 178.1.0.0 redistribute eigrp 10 metric 2 ! access-list 1 deny 192.168.1.0 access-list 1 permit any R5: router eigrp 10 network 181.16.0.0 redistribute rip metric 1 1 1 1 1 distribute-list 1 in s0 ! router rip network 178.1.0.0 redistribute eigrp 10 metric 2 ! access-list 1 deny 192.168.1.0 access-list 1 permit any
  C. R2: router eigrp 10 network 181.16.0.0 redistribute rip metric 1 1 1 1 1 distribute-list 1 in s0 ! router rip network 178.1.0.0 redistribute eigrp 10 metric 2 ! access-list 1 deny 192.168.1.0 access-list 1 permit any R5: router eigrp 10 network 181.16.0.0 redistribute rip metric 1 1 1 1 1 distribute-list 1 in s1 ! router rip network 178.1.0.0 redistribute eigrp 10 metric 2 ! access-list 1 deny 192.168.1.0 access-list 1 permit any
  D. R2: router eigrp 7 network 181.16.0.0 redistribute rip metric 1 1 1 1 1 distribute-list 1 in s1 ! router rip network 178.1.0.0 redistribute eigrp 7 metric 2 ! access-list 1 deny 192.168.1.0 access-list 1 permit any R5: router eigrp 7 network 181.16.0.0 redistribute rip metric 1 1 1 1 1 distribute-list 1 in s1 ! router rip network 178.1.0.0 redistribute eigrp 7 metric 2 ! access-list 1 deny 192.168.1.0 access-list 1 permit any
  D. R2: router eigrp 7 network 181.16.0.0 redistribute rip metric 1 1 1 1 1 distribute-list 1 in s1 ! router rip network 178.1.0.0 redistribute eigrp 7 metric 2 ! access-list 1 deny 192.168.1.0 access-list 1 permit any R5: router eigrp 7 network 181.16.0.0 redistribute rip metric 1 1 1 1 1 distribute-list 1 in s1 ! router rip network 178.1.0.0 redistribute eigrp 7 metric 2 ! access-list 1 deny 192.168.1.0 access-list 1 permit any

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  https://www.cisco.com/c/en/us/support/docs/ip/enhanced-interior-gateway-routing-protocol-eigrp/8606-redist.html

• Question 523:

  A network administrator cannot connect to a device via SSH. The line vty configuration is as follows:

  

  Which action resolves this issue?

  A. Increase the session timeout
  B. Change the stopbits to 10.
  C. Configure the transport input SSH
  D. initialize the SSH key
  D. initialize the SSH key

• Question 524:

  Which two protocols can cause TCP starvation? (Choose two)

  A. TFTP
  B. SNMP
  C. SMTP
  D. HTTPS
  E. FTP
  A. TFTP
  B. SNMP

• Question 525:

  Refer to the exhibit.

  

  Which action allows the engineer to successfully copy running-config to the TFTP server?

  A. Add a route in the switch to the TFTP server.
  B. Add the TFTP server configuration in the switch.
  C. Use TFTP server IP address 10.0.1.1.
  D. Use file name Switch-confg.txt.
  C. Use TFTP server IP address 10.0.1.1.

• Question 526:

  Which routing protocol is used by the PE router to advertise routes to a CE router without redistribution or static after removing the RD tag from the P router?

  A. IS-IS
  B. OSPF
  C. BGP IPv4
  D. MP-BGP
  C. BGP IPv4

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• Question 527:

  Which feature is required for IPv6 Source Guard to block traffic arriving on the server interface from unknown sources?

  A. Dynamic ARP Inspection
  B. IPv6 RA Guard
  C. IPv6 ND Inspection
  D. DHCPv6 Guard
  C. IPv6 ND Inspection

• Question 528:

  An engineer configured a DHCP server for Cisco IP phones to download its configuration from a TFTP server, but the IP phones failed to toad the configuration What must be configured to resolve the issue?

  A. BOOTP port 67
  B. DHCP option 66
  C. BOOTP port 68
  D. DHCP option 69
  B. DHCP option 66

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  DHCP options 3, 66, and 150 are used to configure Cisco IP Phones. Cisco IP Phones download their configuration from a TFTP server. When a Cisco IP Phone starts, ifit does not have both the IP address and TFTP server IP address preconfigured, it sends a request with option 150 or 66 to the DHCP server to obtain this information.+ DHCP option 150 provides the IP addresses of a list of TFTP servers.+ DHCP option 66 gives the IP address or the hostname of a single TFTP server.

  

• Question 529:

  An engineer received a ticket about a router that has reloaded. The monitoring system graphs show different traffic patterns between logical and physical interfaces when the router is rebooted. Which action resolves the issue?

  A. Configure the snmp ifindex persist command globally.
  B. Clear the logical interfaces with snmp ifindex clear command
  C. Configure the snmp ifindex persist command on the physical interfaces.
  D. Trigger a new snmpwalk from the monitoring system to synchronize interface OlDs
  A. Configure the snmp ifindex persist command globally.

• Question 530:

  Which control plane process allows the MPLS forwarding state to recover when a secondary RP takes over from a failed primary RP?

  A. MP-BGP uses control plane services for label prefix bindings in the MPLS forwarding table
  B. LSP uses NSF to recover from disruption *i control plane service
  C. FEC uses a control plane service to distribute information between primary and secondary processors
  D. LDP uses SSO to recover from disruption in control plane service
  D. LDP uses SSO to recover from disruption in control plane service

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