Cisco 300-410 Online Practice Questions and Exam Preparation

Cisco 300-410 Online Questions & Answers

• Question 641:

  An EIGRP network is configured with default settings for all the routers, shown in the exhibit. Traffic is not routing correctly.

  

  What commands need to be run, and on which router should it be run?

  A. The ip summary-address eigrp 500 172.16.0.0.0 255.255.0.0 command should be run on Router D.
  B. The ip summary-address eigrp 500 172.16.3.0.0 255.255.255.0 command should be run on Router C.
  C. The no auto-summary command should be run on Routers A, B, C and F
  D. The auto-summary command should be run on Router D.
  C. The no auto-summary command should be run on Routers A, B, C and F

  ---

  The no auto-summary command should be run on Routers A, B, C and F. When discontinuous networks exist in the network, as in this one, the auto summarization feature will prevent proper routing. Auto summarization is enabled by default.

  Discontinuous networks are subnets of a classful parent network address not located in the same area of the network. Because Routers A, B, C and F will all advertise a 10.0.0.0/8 network Router D will not only think that the 10.0.0.0/8 network is on two different directions it will be unable to discern the individual subnets connected to each, leading to connectivity issues. Executing the no auto-summary command on those three routers will allow them to advertise subnets, clearing up the routing confusion

  created by auto summarization.

  The ip summary-address eigrp 500 172.16.0.0.0 255.255.0.0 command should not be run on Router D. This will manually configure the same summarization that is already occurring automatically, and will not solve the issue.

  The auto-summary command should not be run on Router D. This function is already being performed automatically and is the source of the routing problem. It should be disabled instead.

  Objective:

  Layer 3 Technologies

  Sub-Objective:

  Configure and verify manual and autosummarization with any routing protocol

  References:

  Cisco > Support > Technology Support > IP > IP Routing > Technology Information > Technology Whitepaper > Enhanced Interior Gateway Routing Protocol > Document ID: 16406 > Summarization

• Question 642:

  Refer to the exhibit.

  

  An error message "an OSPF-4-FLOOD_WAR" is received on SW2 from SW1. SW2 is repeatedly receiving its own link-state advertisement and flushes it from the network. Which action resolves the issue?

  A. Change area 5 to a normal area from a nonstub area
  B. Resolve different subnet mask issue on the link
  C. Configure Layer 3 port channel on interfaces between switches
  D. Resolve duplicate IP address issue in the network
  D. Resolve duplicate IP address issue in the network

• Question 643:

  An engineer must configure a Cisco router to initiate secure connections from the router to other devices in the network but kept failing.

  Which two actions resolve the issue? (Choose two.)

  A. Configure transport input ssh command on the console.
  B. Configure a domain name.
  C. Configure a crypto key to be generated.
  D. Configure a source port for the SSH connection to initiate.
  E. Configure a TACACS+ server and enable it.
  B. Configure a domain name.
  C. Configure a crypto key to be generated.

  ---

  Follow these guidelines when configuring the switch as an SSH server or SSH client:

  +

  An RSA key pair generated by a SSHv1 server can be used by an SSHv2 server, and the reverse.

  +

  If the SSH server is running on a stack master and the stack master fails, the new stack master uses the RSA key pair generated by the previous stack master + If you get CLI error messages after entering the crypto key generate rsa global configuration command, an RSA key pair has not been generated. Reconfigure thehostname and domain, and then enter the crypto key generate rsa command.

  +

  When generating the RSA key pair, the message No host name specified might appear. If it does, you must configure a hostname by using the hostname globalconfiguration command. + When generating the RSA key pair, the message No domain specified might appear. If it does, you must configure an IP domain name by using the ip domain-nameglobal configuration command. + When configuring the local authentication and authorization authentication method, make sure that AAA is disabled on the console.

• Question 644:

  An engineer configured the wrong default gateway for the Cisco DNA Center enterprise interface during the install. Which command must the engineer run to correct the configuration?

  A. sudo maglev-config update
  B. sudo maglev install config update
  C. sudo maglev reinstall
  D. sudo update config install
  A. sudo maglev-config update

• Question 645:

  Refer to the exhibit.

  

  The R1 routing table has the prefixes for the FTP1 and FTP2 file servers. A network engineer must configure the R1 with these requirements:

  1. Host1 must use the FTP1 fileserver.

  2. Host2 must use the FTP2 fileserver.

  Which configuration meets the requirement on R1?

  A. ip access-list extended FTP1_R1 permit ip host 10.10.10.11 host 10.10.100.11 ip access-list extended FTP2_R1 permit ip host 10.10.10.22 host 10.10.200.22 ! route-map PBR_FTP permit 10 match ip address FTP1_R1 set ip next-hop 10.10.40.1 route-map PBR_FTP permit 20 match ip address FTP2_R1 set ip next-hop 10.10.30.1 ! ip local policy route-map PBR_FTP
  B. ip access-list extended FTP1_R1 permit ip host 10.10.10.11 host 10.10.100.11 ip access-list extended FTP2_R1 permit ip host 10.10.10.22 host 10.10.200.22 ! route-map PBR_FTP permit 10 match ip address FTP1_R1 set ip next-hop 10.10.30.1 route-map PBR_FTP permit 20 match ip address FTP2_R1 set ip next-hop 10.10.40.1 ! ip local policy route-map PBR_FTP
  C. ip access-list extended FTP1_R1 permit ip host 10.10.10.11 host 10.10.100.11 ip access-list extended FTP2_R1 permit ip host 10.10.10.22 host 10.10.200.22 ! route-map PBR_FTP permit 10 match ip address FTP1_R1 set ip next-hop 10.10.30.1 route-map PBR_FTP permit 20 match ip address FTP2_R1 set ip next-hop 10.10.40.1 ! interface GigabitEthernet 0/0 ip policy route-map PBR_FTP
  D. ip access-list extended FTP1_R1 permit ip host 10.10.10.11 any ip access-list extended FTP2_R1 permit ip host 10.10.10.22 any route-map PBR_FTP permit 10 match ip address FTP1_R1 set ip next-hop 10.10.30.1 ! route-map PBR_FTP permit 20 match ip address FTP2_R1 set ip next-hop 10.10.40.1 ! interface GigabitEthernet 0/0 ip policy route-map PBR_FTP
  C. ip access-list extended FTP1_R1 permit ip host 10.10.10.11 host 10.10.100.11 ip access-list extended FTP2_R1 permit ip host 10.10.10.22 host 10.10.200.22 ! route-map PBR_FTP permit 10 match ip address FTP1_R1 set ip next-hop 10.10.30.1 route-map PBR_FTP permit 20 match ip address FTP2_R1 set ip next-hop 10.10.40.1 ! interface GigabitEthernet 0/0 ip policy route-map PBR_FTP

  ---

• Question 646:

  Which of the following statements represent characteristics of an automatic 6to4 tunnel through an IPv4 network? (Choose all that apply.)

  A. There is a NAT-PT router on either end of the tunnel.
  B. There is a dual stack router on either end of the tunnel.
  C. Each 6to4 site will have a /48 prefix.
  D. Each 6to4 site will have a /16 prefix.
  E. The IPv4 addresses of the edge routers are part of the site prefix.
  F. The IPv6 addresses of the sending and receiving IPv6 hosts are part of the site prefix.
  B. There is a dual stack router on either end of the tunnel.
  C. Each 6to4 site will have a /48 prefix.
  E. The IPv4 addresses of the edge routers are part of the site prefix.

  ---

  When implementing an automatic 6to4 tunnel, each IPv6 site receives a 48-bit prefix. The hexadecimal equivalent of the IPv4 address of the edge router is appended to 0x2002 and followed with the prefix to identify each end of the tunnel.

  Each end of the tunnel must be a dual stack router, which is one that can route both IPv4 and IPv6 traffic. For example, if the edge router's IPv4 address were 192.168.99.1, the hexadecimal equivalent of the address (c0a8:6301) would be inserted between 0X2002 and the /48 prefix, resulting in a packet with the IPv6 address 2002:c0a8:6301::/48 to arrive at the tunnel endpoint address.

  A Network Address Translation - Port Translation (NAT-PT) router performs translation from IPv4 to IPv6. It is not used in a 6to4 tunnel.

  Each site does not have a /16 prefix with a 6to4 tunnel. Rather, each site has a /48 prefix.

  The IPv6 address of each IPv6 host is not part of the site prefix. These addresses are retained within the IPv6 portion of the header, and will be read after the frame reaches the end of the tunnel for eventual IPv6 routing on the far end.

  Objective:

  Network Principles

  Sub-Objective:

  Recognize proposed changes to the network

  References:

  Cisco > Products > Collateral > Whitepaper > Enterprise IPv6 Transition Strategy > IPv6 Deployment Solution Options

• Question 647:

  Refer to the exhibit.

  

  A network administrator reviews the branch router console log to troubleshoot the OSPF adjacency issue with the DR router. Which action resolves this issue?

  A. Configure matching hello and dead intervals between sites
  B. Configure the WAN interface for DR site in the related OSPF area
  C. Advertise the branch WAN interface matching subnet for the DR site
  D. Stabilize the DR site flapping link to establish OSPF adjacency
  C. Advertise the branch WAN interface matching subnet for the DR site

• Question 648:

  Which show command displays entries in a router's Border Gateway Protocol (BGP) table?

  A. show ip bgp
  B. show ip bgp table
  C. show ip bgp topology
  D. show ip bgp summary
  A. show ip bgp

  ---

  The correct command is show ip bgp.

  The BGP table lists all the paths that the BGP router has learned. Each destination network listed might have multiple possible paths listed. Given that the criteria are met for each destination network, BGP will choose a path to put in the IP routing table.

  The BGP table is in many ways analogous to EIGRP's topology table in that it lists many known paths, not just the best path. Below is an example partial output of the show ip bgp command:

  

  The following facts can be determined from this output:

  All of the routes were redistributed into BGP from an IGP. In the status column (located to the left of the Network column and to right of the column where some lines have a > symbol) is a column that is either blank or has an i symbol. In this case, all of the columns are blank. If the status column is blank, then BGP learned the route from an external peer. If it has an i symbol, an iBGP neighbor advertised this path to the router. It was learned from an Interior Gateway Protocol (IGP) and was advertised as a

  result of executing a network statement on the neighbor under the router bgp context as shown below adding the 30.0.0.0 network under BGP 100.

  R4(config)#router bgp 100

  R4(config-router)#network 30.0.0.0

  Four routes will be installed in the routing table. These routes have both an * symbol and a > symbol. l in the status column. The * symbol indicates that the next hop is valid and the > symbol indicates that this is the best route.

  The output is slightly different if you specify the network that you are interested in, as shown below in the show ip bgp 214.5.98.0 command output:

  

  This output focuses solely on the route to the network 214.5.98.0 and provides the following pieces of information:

  The neighbor that sent this route is at 192.168.1.1

  The AS of the network where 214.5.98.0 is located is 5760

  The IGP metric to reach the neighbor that sent this route is 886, as shown by the text 192.168.1.1 (metric 886) The complete metric to 214.5.98.0 is 1652, as shown in the last line by Origin IGP, metric 1652

  The commands show ip bgp table and show ip bgp topology are not valid Cisco commands.

  The show ip bgp summary command displays the status of BGP connections.

  Objective:

  Layer 3 Technologies

  Sub-Objective:

  Explain BGP attributes and best-path selection

  References:

  Cisco IOS Master Command List, Release 12.4 > l through q > Cisco IOS IP Routing: BGP Command Reference > show ip bgp

• Question 649:

  Refer to the exhibit.

  

  An administrator must configure the router with OSPF for IPv4 and IPv6 networks under a single process. The OSPF adjacencies are not established and did not meet the requirement. Which action resolves the issue?

  A. Replace OSPF process 10 on the interfaces with OSPF process 1 for the IPv4 address, and remove process 10 from the global configuration.
  B. Replace OSPF process 10 on the interfaces with OSPF process 1, and configure an additional router ID with IPv6 address.
  C. Replace OSPF process 10 on the interfaces with OSPF process 1, and remove process 10 from the global configuration.
  D. Replace OSPF process 10 on the interfaces with OSPF process 1 for the IPv6 address, and remove process 10 from the global configuration.
  C. Replace OSPF process 10 on the interfaces with OSPF process 1, and remove process 10 from the global configuration.

• Question 650:

  Refer to the exhibit.

  

  

  R1 and R2 are configured for EIGRP peering using authentication and the neighbors failed to come up. Which action resolves the issue?

  A. Configure a matching key-id number on both routers.
  B. Configure a matching lowest key-id on both routers.
  C. Configure a matching key-chain name on both routers.
  D. Configure a matching authentication type on both routers.
  B. Configure a matching lowest key-id on both routers.

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