Free Cisco 300-510 Practice Test & Real Exam Questions, Page 1

Question #1

Refer to the exhibit. A network operator is working to deploy a Unified BGP design and allow it to be available only in selected markets and services in the future. The label allocation is not functioning as desired. Which action will fix the issue?

A. Reconfigure the route-policy ALL_LABELS to match all after the drop.

B. Reconfigure the route-policy ALL_LABELS to pass.

C. Remove the allocate-labels command.

D. Remove the route policy and only configure "allocate-label".

Discussion 0

Correct Answer: B Vote an answer

Question #2

Refer to the exhibit. Router 1 has attempted to establish a Cisco MPLS TE tunnel to router 2, but the tunnel has failed.
Which statement about this configuration is true?

A. Router 1 and router 2 must define the RSVP bandwidth reserved on the physical interfaces

B. Router 1 must have Cisco MPLS TE enabled on interface gigabitethernet0/1

C. Router 1 must define an explicit path to router 2

D. Router 2 must have a tunnel interface created with router 1 as the destination

Discussion 0

Correct Answer: B Vote an answer

Question #3

Which difference must an engineer consider when Implementing Inter-domain and Intra-domain multicast routing on the network?

A. Intra-domain routing allows the service provider to control incoming and outgoing multicast data streams on its network, but inter-domain routing limits the service provider's control.

B. Inter-domain routing supports policy routing to connect different multicast domains using PIM-SM, but intra-domain routing supports policy routing using PIM-SM only within a single domain.

C. Intra-domain routing uses the PIM and MBGP protocols for multicast routing, but inter-domain routing must use PIM-SSM or MSDP.

D. Intra-domain routing is dependent on the RP router within the same SP network, but inter-domain routing reduces the dependency on the other SP network.

Discussion 0

Correct Answer: D Vote an answer

Question #4

Refer to the exhibit. A network operator is configuring BGP PIC on CE1 on already established neighborships with PE1 and PE2 inside the fully converged MPLS network. Which element needs to be implemented to make this feature function effectively?

A. A reserved BGP community of 1:10 must be used to denote the PIC feature set to the routing protocol

B. Bidirectional Forwarding Detection must be applied to the upstream facing BGP interfaces

C. BGP import export policies must be applied on all devices for the routes needing BGP for PIC

D. The operator must ensure that all prefixes have the same next-hop from PE1 and PE2 for BGP PIC

Discussion 0

Correct Answer: B Vote an answer

Question #5

What is a key benefit of BGP dynamic update peer groups?

A. Neighbors in a peer group are no longer required to share the same outbound routing policies.

B. BGP configurations are automatically optimized by routers which dynamically create BGP peer groups.

C. Routing updates to the same destination are grouped to increase BGP efficiency.

D. Newly configured BGP neighbors have peer group template configurations dynamically applied.

E. Dynamic update groups use iBGP neighbor information to automatically calculate route reflector cluster configurations.

Discussion 0

Correct Answer: A Vote an answer

Question #6

Refer to the exhibit. Router 1, Router 2, and Router 3 are co-located in an onsite data center of an office, but Router 4, Router 5, and Router 6 are installed in another data center several miles away. A network engineer is troubleshooting an RSVP- issue on the network. On most of the devices, the engineer can move all LSPs away from a selected interface and take it down for maintenance without interrupting traffic. However, when an interface on Router 3 is taken down, traffic on the network is disrupted. What must the engineer enable to resolve the issue on Router
3?

A. soft-preemption feature

B. NSR

C. soft-disperse feature

D. FRR

Discussion 0

Correct Answer: D Vote an answer

Explanation: Only visible for Pass4Leader members. You can sign-up / login (it's free).

Question #7

SIMULATION
Guidelines
This is a lab item in which tasks will be performed on virtual devices.
- Refer to the Tasks tab to view the tasks for this lab item.
- Refer to the Topology tab to access the device console(s) and perform the tasks.
- Console access is available for all required devices by clicking the device icon or using the tab(s) above the console window.
- All necessary preconfigurations have been applied.
- Do not change the enable password or hostname for any device.
- Save your configurations to NVRAM before moving to the next item.
- Click Next at the bottom of the screen to submit this lab and move to the next question.
- When Next is clicked, the lab closes and cannot be reopened.
Topology

Tasks
R2 and R3 are routers that perform multicast operations. Candidates are required to perform the below configuration and verification tasks on R1 and R2.
1. Configure R2 and R3 to be able to process, route and forward multicast packets.
2. Configure R3 as the root of the shared tree for the any source multicast domain.
3. Configure R1 as the receiver for group 239.100.100.1 and ensure a ping to that group from R4 is successful.
Initial configuration with IP addressing has been completed. The candidate must not make any changes to the configurations except to fulfill the tasks listed above. Use non-proprietary protocol where needed. Only use the provided logical interface for the applicable task.

Discussion 0

Correct Answer:

1. Enable Multicast Routing on R2 and R3
To process, route, and forward multicast packets, multicast routing must be enabled globally, and PIM (Protocol Independent Multicast) must be configured on the appropriate interfaces.
Commands on R2 and R3:
R2(config)# ip multicast-routing
R2(config)# interface e0/0
R2(config-if)# ip pim sparse-mode
R2(config)# interface e0/1
R2(config-if)# ip pim sparse-mode
R2(config)# interface loopback 0
R2(config-if)# ip pim sparse-mode
R3(config)# ip multicast-routing
R3(config)# interface e0/0
R3(config-if)# ip pim sparse-mode
R3(config)# interface e0/1
R3(config-if)# ip pim sparse-mode
R3(config)# interface loopback 0
R3(config-if)# ip pim sparse-mode
ip multicast-routingenables multicast routing globally.
ip pim sparse-modeenables PIM in Sparse Mode on interfaces.
2. Configure R3 as the Root of the Shared Tree (Rendezvous Point - RP)
To configure R3 as the RP for the multicast domain, use Auto-RP or Static RP. Here, we configure Static RP for group 239.100.100.1.
Commands on R2 and R3:
R2(config)# ip pim rp-address 3.3.3.3
R3(config)# ip pim rp-address 3.3.3.3
ip pim rp-address <RP-IP>: Configures R3's Loopback0 IP (3.3.3.3) as the RP for the multicast domain.
Task 3: Configure R1 as the Receiver for Group 239.100.100.1
To configure R1 as a multicast receiver, enable IGMP (Internet Group Management Protocol) on R1's e0/0 interface.
Commands on R1:
R1(config)# interface e0/0
R1(config-if)# ip igmp join-group 239.100.100.1
ip igmp join-group <group>: Forces R1 to join the multicast group 239.100.100.1.
Verification: Ensure Ping to Group 239.100.100.1 is Successful from R4
To verify multicast group reachability:
1. Send Multicast Traffic from R4:
R4# ping 239.100.100.1 repeat 5
2. Verify Multicast Routing Table on R2 and R3:
R2# show ip mroute
R3# show ip mroute
3. Verify IGMP Group Membership on R1:
R1# show ip igmp groups
Complete Summary of Configurations:
1. R2 Configuration:
ip multicast-routing
interface e0/0
ip pim sparse-mode
interface e0/1
ip pim sparse-mode
interface loopback 0
ip pim sparse-mode
ip pim rp-address 3.3.3.3
2. R3 Configuration:
ip multicast-routing
interface e0/0
ip pim sparse-mode
interface e0/1
ip pim sparse-mode
interface loopback 0
ip pim sparse-mode
ip pim rp-address 3.3.3.3
3. R1 Configuration:
interface e0/0
ip igmp join-group 239.100.100.1
Verification Checklist:
1. R3 is the RP: Use show ip pim rp mapping..
2. R1 is a Group Member: Verify with show ip igmp groups.
3. Multicast Traffic Flows: Use ping 239.100.100.1from R4 and verify success.

Question #8

Refer to the exhibit. A network engineer configured routers R1 and R5 to run in IS-IS Level 1 mode and router R6 to run in IS-IS Level 2 mode. All other routers are running as Level 1 / Level
2 routers. An engineer expects traffic from R1 to R6 to pass via R2, but IS-IS routing has calculated the best path via R4. Which action corrects the problem?

A. Configure all routers as Level 1 / Level 2 routers.

B. Configure all routers as Level 1 routers.

C. Change the link metric for the link from router R1 to router R2 to 1.

D. Remove the link metric for the link from router R1 to router R2.

Discussion 0

Correct Answer: C Vote an answer

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Question #9

Refer to the exhibit. R21 is a multicast source sending multicast traffic 224.1.1.1 to R23, with RP22 serving as the rendezvous point inside AS65222. A network engineer noticed that when R21 goes down, R12 in AS65111 starts to send the same multicast group 224.1.1.1 through RP11. Which action resolves the issue?

A. Enable passive interface under EIGRP between the two autonomous systems.

B. Disable PIM parse mode between RP11 and RP22 in the two autonomous systems.

C. Advertise RP2 with a high local preference in AS65222.

D. Block service groups 224.0.1.39 and 224.0.1.40 between the two autonomous systems.

Discussion 0

Correct Answer: D Vote an answer

Question #10

Refer to the exhibit. The branch office in area 10 is connected to HQ via Frame Relay uplinks with bandwidth constraints. After a recent implementation of QoS on the R2 and R3 networks the system has been logging %SYS-2-MALLOCFAIL: Memory allocation of 65536 bytes failed from
0x224E321, alignment 0 messages. To reduce traffic load and memory utilization on R2 and R3 the network engineer configured R1 to announce only one user subnet per location by issuing the summary address 192.168.0.0 255.255.248.0 command en R1. However, the engineer noticed that router R2 still has two routes and a summary address from HQ and R3 also has two routes from HQ. Which two actions must the engineer take on R1 to fix the issue so that only one route is announced? (Choose two.)

A. Configure the subnet range with the network command under the IS-IS process.

B. Configure RI as a Level 1 device.

C. Configure a summary route for Level 1-Level 2 devices.

D. Configure a summary route for Level 1 devices.

E. Redistribute both routes into the ISIS process.

Discussion 0

Correct Answer: C,D Vote an answer

Question #11

Refer to the exhibit. Which task must you perform on interface g1/0/0 to complete the SSM implementation?

A. configure IGMPv3

B. enable CDP

C. disable IGMP

D. configure OSPFv3

Discussion 0

Correct Answer: A Vote an answer

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Question #12

Which two statements about route reflectors are true? (Choose two.)

A. Routes received from nonclient peers are reflected to route reflector cluster as well as OSPF peers.

B. Routes received from nonclient peers are reflected to route reflector clients as well as nonclient peers.

C. If a route reflector receives a route with a cluster-list attribute containing a different cluster ID, the route is discarded.

D. If a router received an iBGP route with the originator-ID attribute set to its own router ID, the route is discarded.

E. Routes received from a route reflector client is reflected to other clients and nonclient peers.

Discussion 0

Correct Answer: D,E Vote an answer

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Question #13

Refer to the exhibit. All routers on this network have been configured with PIM-SM, and R1 is the rendezvous point. However, when asymmetric routing is implemented to modify link usage, the network begins to drop certain multicast traffic. Which action corrects the problem?

A. Remove the asymmetric routing and use spanning tree to manage link usage.

B. Configure the routers to use PIM-DM instead of PIM-SM.

C. Place the routes affected by asymmetric routing in a VRF.

D. Add a static Mroute for routes that are failing.

Discussion 0

Correct Answer: D Vote an answer

Question #14

Refer to the exhibit. Router 1 has established an SR-TE tunnel with router 2.
Which statement describes this configuration?

A. Router 1 is the head-end tunnel and has dynamically chosen a path to router 2.

B. Router 1 has a list of labels used to explicitly lay out a path to router 2.

C. Router 1 and router 2 have a bidirectional tunnel set up with dynamic path selection.

D. Router 2 is the head-end tunnel and has explicitly set a path to router 1.

Discussion 0

Correct Answer: A Vote an answer

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