Cisco 300-410 Online Practice Questions and Exam Preparation

Cisco 300-410 Online Questions & Answers

• Question 821:

  Refer to the exhibit.

  

  A client is concerned that passwords are visible when running this show archive log config all. Which router configuration is needed to resolve this issue?

  A. MASS-RTR(config-archive-log-cfg)#password encryption aes
  B. MASS-RTR(config)#aaa authentication arap
  C. MASS-RTR(config)#service password-encryption
  D. MASS-RTR(config-archive-log-cfg)#hidekeys
  D. MASS-RTR(config-archive-log-cfg)#hidekeys

  ---

  

• Question 822:

  Which command can you use to display information about OSPF virtual links?

  A. debug ip ospf adj
  B. show ip ospf [process-id]
  C. show ip ospf virtual-links
  D. show ip ospf border-routers
  C. show ip ospf virtual-links

  ---

  The correct answer is show ip ospf virtual-links. The show ip ospf virtual-links command displays the current state of OSPF virtual links, as shown below.

  

  The following additional commands are available to verify OSPF configurations: show ip ospf border-routers, debug ip ospf adj, and show ip ospf.

  The show ip ospf border-routers command displays internal OSPF routing table entries for an ABR, as shown below.

  router10#show ip ospf border-routers

  Codes: i - Intra-area route, I-Inter-area route

  Type Dest Address Cost NextHop Interface ABR ASBR Area SPF

  i 2.2.2.2 10 192.1.1.199 Ethernet 2 TRUE FALSE 0 3 i 3.2.2.2 10 192.1.1.200 Ethernet 2 TRUE FALSE 0 3 The show ip ospf command displays information about the router's role and each area to which the router is connected, as shown below.

  

  The debug ip ospf adj command displays information about the state of neighbor adjacencies, as shown below. R3#debug ip ospf adj OSPF adjacency events debugging is on

  00:54:04: OSPF: Rcv pkt from 172.12.23.2, Ethernet0, area 0.0.0.1 : src not on the same network

  In the above example, either the IP address or the subnet mask is misconfigured on either this router or the neighbor.

  Objective:

  Layer 3 Technologies

  Sub-Objective:

  Configure and verify network types, area types, and router types

  References:

  Cisco > Cisco IOS IP Routing Protocols Command Reference > IP Routing Protocol-Independent Commands:

  S through T > show ip ospf virtual-links

• Question 823:

  What action is performed for untagged outgoing labels in an MPLS router?

  A. Convert the incoming MPLS packet to an untagged packet and then do a FIB lookup
  B. Convert the incoming MPLS packet to an untagged packet and then do a RIB lookup.
  C. Convert the untagged packet to a labeled packet and forward it to the next router
  D. Convert the incoming MPLS packet to an IP packet and forward it to the next router.
  D. Convert the incoming MPLS packet to an IP packet and forward it to the next router.

  ---

• Question 824:

  Which of the following commands would reveal the K values configured on an EIGRP router?

  A. debug ip eigrp
  B. debug eigrp packet
  C. show ip eigrp traffic
  D. show ip protocols
  D. show ip protocols

  ---

  The show ip protocols command gives information about any dynamic routing protocol, including EIGRP. With respect to EIGRP, it will show the K values as a part of the output. A sample is shown below:

  Routing Protocol is "eigrp 77"

  Outgoing update filter list for all interfaces is not set

  Incoming update filter list for all interfaces is not set

  Default networks flagged in outgoing updates

  Default networks accepted from incoming updates

  EIGRP metric weight K1=1,K2=0,K3=1,K4=0,K5=0

  EIGRP maximum, hopcount 100

  The debug ip eigrp command displays real-time information about EIGRP packets that are received and sent. It does not contain K values. A single line of this command output is shown below:

  Router# debug ip eigrp

  IP-EIGRP: Processing incoming UPDATE packet

  IP-EIGRP: Ext 192.168.5.0 255.255.255.0 M 386560 - 256000 130560 SM 360960 - 256000 104960

  The debug eigrp packet command displays general debug information, but not K values. A sample of this command output is shown below:

  Router# debug eigrp packet

  EIGRP: Sending HELLO on Ethernet0/1

  AS 109, Flags 0x0, Seq 0, Ack 0

  EIGRP: Received UPDATE on Ethernet0/1 from 192.195.78.24,

  AS 109, Flags 0x1, Seq 1, Ack 0

  The show ip eigrp traffic command displays packets received, as well as statistics on hello packets, updates, queries, and acknowledgments, but not K values. Partial output of this command is shown below:

  Router# show ip eigrp traffic

  IP-EIGRP Traffic Statistics for process 151

  Hellos sent/received: 220/205

  Updates sent/received: 7/29

  Queries sent/received: 2/0

  Replies sent/received: 0/2

  Acks sent/received: 29/14

  Objective:

  Layer 3 Technologies

  Sub-Objective:

  Describe and optimize EIGRP metrics

  References:

  Cisco IOS Master Command List, Release 12.4T > sa ipsec through show ip route dhcp > show ip protocols

• Question 825:

  Which IPv6 first hop security feature controls the traffic necessary for proper discovery of neighbor device operation and performance?

  A. RA Throttling
  B. Source or Destination Guard
  C. ND Multicast Suppression
  D. IPv6 Snooping
  D. IPv6 Snooping

• Question 826:

  The network administrator must implement IPv6 in the network to allow only devices that not only have registered IP addresses but are also connecting from assigned locations. Which security feature must be implemented?

  A. IPv6 Snooping
  B. IPv6 Destination Guard
  C. IPv6 Router Advertisement Guard
  D. IPv6 Prefix Guard
  D. IPv6 Prefix Guard

  ---

  https://www.cisco.com/c/en/us/td/docs/routers/7600/ios/15S/configuration/guide/7600_15_0s_book/IPv6_Security.html#62638

• Question 827:

  Refer to lhe exhibit

  

  After an engineer configured a new Cisco rouler as a DHCP server, users reponed iwo primary issues:

  Devices in the HR subnet have intermittent connectivity problems. Workstations in the LEGAL subnet cannot obtain IP addresses.

  Which configurations must the engineer apply to ROUTER_1 to restore connectivity for the affected devices?

  

  

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

• Question 828:

  An engineer configured Reverse Path Forwarding on an interface and noticed that the routes are dropped when a route lookup fails on that interface for a prefix that is available in the routing table Which interface configuration resolves the issue?

  A. ip verify unicast source reachable-via rx
  B. ip verify unicast source reachable-via any
  C. ip verify unicast source reachable-via allow-default
  D. ip verify unicast source reachable-via 12-src
  B. ip verify unicast source reachable-via any

  ---

  According to this question, uRPF is running in strict mode because packets are dropped even when that route exists in the routing table. Maybe packets are dropped because the receiving interface is different from the interface the local router uses to send packets to that destination.

  The ip verify unicast source reachable-via rx command enables Unicast RPF in strict mode.

  To enable loose mode, administrators can use the any option (ip verify unicast source reachable-via any). In loose mode, it doesn't matter if we use this interface to reach the source or not.

  

  The allow-default option allows the use of the default route in the source verification process.

• Question 829:

  What is a function of BFD?

  A. peer recovery after a Layer 3 protocol adjacency failure
  B. peer recovery after a Layer 2 adjacency failure
  C. failure detection independent of routing protocols and media types
  D. failure detection dependent on routing protocols and media types
  C. failure detection independent of routing protocols and media types

  ---

  BFD detects failure without necessitating a specific routing protocol or media type.

• Question 830:

  A customer reports that traffic is not passing on an EIGRP enabled multipoint interface on a router configured as below:

  interface Serial0/0/0 no ip address interface Serial0/0/0.9 multipoint ip address 10.1.1.1 255.255.255.248 ip split-horizon eigrp 1

  Which action resolves the issue?

  A. Enable split horizon.
  B. Disable poison reverse.
  C. Disable split horizon.
  D. Enable poison reverse.
  C. Disable split horizon.

  ---

  In this question sub-interface is used so we have to turn off split-horizon for EIGRP.