Cisco 300-510 Online Practice Questions and Exam Preparation

Cisco 300-510 Online Questions & Answers

• Question 151:

  Refer to the exhibit.

  

  Customers A and C are experiencing packet drops when connecting to the application server While troubleshooting the problem the network engineer confirms that the IS-lS Level-1/2 adjacency is up between routers A B C. and D and both customers can communicate with the database server without packet loss Which action must the engineer take to resolve the issue?

  A. Advertise the application server subnet in the router D IS-IS database
  B. Advertise a static default route to the router B IS-IS database.
  C. Leak the 172, 17.10/24 route in the IS-IS databases on routers A and C.
  D. Leak the customer A and customer C subnets in the router A IS-IS database.
  A. Advertise the application server subnet in the router D IS-IS database

• Question 152:

  Refer to the exhibit.

  

  P1 and PE3 Cisco IOS XR routers are directly connected and have this configuration applied.

  The BGP session is not coming up.

  Assume that there is no IP reachability problem and both routers can open tcp port 179 to each other.

  Which action fixes the issue?

  A. Change HMAC-MD5 to HMAC-SHA1-20
  B. Configure the send and accept lifetime under key 1
  C. Change HMAC-MD5 to MD5
  D. Change HMAC-MD5 to HMAC-SHA1-12
  B. Configure the send and accept lifetime under key 1

• Question 153:

  Which protocol can be used to secure multicast in a group multicast solution where group key management is needed for secure key exchange?

  A. DOI
  B. ISAKMP
  C. GDOI
  D. IPsec
  C. GDOI

• Question 154:

  Refer to the exhibit.

  

  A network engineer just replaced five routers on this OSPF network. When the routing protocol is brought up, R5 cannot reach routes that originate on R1.

  The engineer verified that all connected links have established neighbor relationships. R5 reaches routes originating on R3 and R4.

  Which action resolves the issue?

  A. Configure an OSPF virtual link to bridge Area 0 on routers R3 and R4.
  B. Configure automatic neighbor discovery on RI and R5.
  C. Configure OSPF to have a contiguous Area O.
  D. Configure each link to be point-to-point.
  A. Configure an OSPF virtual link to bridge Area 0 on routers R3 and R4.

• Question 155:

  Refer to the exhibit.

  

  MPLS traffic from the packet core connected to router RX (10.10.10.1) to the radio network connected to router RB (10.10.10.6) uses the longer route RB 2 Y X. RX and R2 are configured with the default LDP hello and hold intervals.

  The team verified that OSPF neighborship in area 0 is established between RX and R2. Which action must be taken to choose the shortest path and resolve the issue?

  A. RX(config)# mpls ldp holdtime 30
  B. RZ(config)# interface FastEthernet0/0 RZ(config-if)# no mpls ldp discovery transport-address 10.10.10.6
  C. RZ(config)# interface FastEthernet0/0 RZ(config-if)# mpls ldp discovery transport-address 10.10.10.1
  D. RX(config)# mpls ldp neighbor 10.10.10.6 targeted ldp
  B. RZ(config)# interface FastEthernet0/0 RZ(config-if)# no mpls ldp discovery transport-address 10.10.10.6

• Question 156:

  Which task is performed when troubleshooting LDP?

  A. Execute the ping utility to generate information about the MAC addresses used along the path
  B. Verify that MPLS is disabled globally and enabled on the necessary interfaces in a per-interface basis
  C. Execute the traceroute utility to generate information about the labels used along the path
  D. Verify that Cisco Express Forwarding has been disabled on the network
  C. Execute the traceroute utility to generate information about the labels used along the path

• Question 157:

  Refer to the exhibit.

  

  Users at the branch office on R1 reported issue with an application at the home office on R4. While troubleshooting the issue, a network engineer determined that:

  1.

  The branch-office users can connect to the home office.

  2.

  The IS-IS adjacencies between R1 and R2 and R1 and the branch office are up.

  3.

  Traffic from R1 to the R2 10.20.1.0/24 network is moving normally.

  4.

  The application at the home office is experiencing packet drops on the connection to the Branch, and R3 cannot reach the R1 172.16.10.0/24 network. Which action resolves the issues?

  A. Redistribute static connected routes in IS-IS on router RI.
  B. Configure the IS-IS core instance on the RI GigabitEthernet0/3 interface.
  C. Redistribute static connected routes in IS-IS on router R4.
  D. Configure the IS-IS core instance on the R2 GigabitEthernet0/1 interface.
  B. Configure the IS-IS core instance on the RI GigabitEthernet0/3 interface.

• Question 158:

  The engineering team at ISP_1 must improve network stability and minimize the impact of routing instabilities from other domains on unicast transit services in the backbone. R1 is part of an OSPF-enabled network and acts as an ASBR connected via interface Gi0/1 to the external domain. The OSPF exponential backoff algorithm (RFC 3623) with helper mode is already implemented on R1. Which additional configuration must the ISP_1 team apply to suppress routing instability for 3 minutes?

  A. Configure ip ospf resync-timeout 180 under the Gi0/1 interface configuration.
  B. Configure ip ospf timers nsf interval 3 under the Gi0/1 interface configuration.
  C. Configure nsf ietf restart-interval 180 under the global OSPF configuration.
  D. Configure nsf ospf wait 3 under the global OSPF configuration.
  A. Configure ip ospf resync-timeout 180 under the Gi0/1 interface configuration.

• Question 159:

  Assume that the R1 router is enabled for PIM-SM and receives a multicast packet sourced from 172.16.1.100, and the R1 router has multicast receivers on the Gi0/1, Gi0/2, Gi0/3 and Gi0/4 interfaces.

  

  The multicast packet from the 172.16.1.100 source must arrive on which interface on the R1 router for it to be forwarded out the other interfaces?

  A. Gi0/1
  B. Gi0/2
  C. Gi0/3
  D. Gi0/4
  E. Gi0/1 or Gi0/2 or Gi0/3 or Gi0/4
  F. Gi0/2 or Gi0/3
  G. Gi0/1 or Gi0/4
  A. Gi0/1

• Question 160:

  Refer to the exhibit.

  

  CE1 and CE2 use connectivity over the service provider cloud to reach CE3 In the event of a link failure in the service provider cloud which BGP feature relies on IGP convergence to quickly assist in the installation of a backup path?

  A. BGP graceful restart
  B. BGP route dampening
  C. BGP PIC core
  D. BGP confederations
  C. BGP PIC core