Cisco CCNP Enterprise 300-420 Questions & Answers

• Question 321:

  A company has many spoke sites with two data centers. The company wants to exchange the routing information between the data centers and the spoke sites using EIGRP. All locations belong to a single AS, and auto-summarization is disabled. Which two actions must the company choose? (Choose two.)

  A. Split the network into two separate ASs.

  B. Exchange all routes between locations.

  C. Summarize the routes between the hubs.

  D. Make each spoke site router a stub router.

  E. Summarize the routes from spokes to the hubs.

  Correct Answer: DE

• Question 322:

  Refer to the exhibit.

  

  An engineer is designing an OSPF solution with these requirements:

  NMS server will manage R5 and R6.

  Upon failure of R1, all NMS traffic should be routed through R4.

  Upon failure of the link between R5 and R6, all traffic destined for 10.6.6.6 should be routed through R4.

  Which solution must the engineer choose?

  A. Redistribute OSPF process 1 into process 2 on R1 and R4.

  B. Advertise 172.16.1.1 into OSPF process 1 with high cost on R1.

  C. Apply static routes on R2 and R3 with IP SLA tracking toward R5 and R6.

  D. Enable the default-information originate command with a higher metric on R2 to R1.

  Correct Answer: A

• Question 323:

  A company wants to switch from static to dynamic routing. The branches use DMVPN back to the hub using two internet connections. One internet connection speed is 10 Mbps, and the other is 100 Mbps. All locations use Cisco routers; however, the branch routers have limited memory and CPU resources. Which routing protocol and design solution must the company choose for optimal traffic forwarding during peak traffic times?

  A. OSPF deployed in area 0 with branch routers connected back via virtual links

  B. EIGRP with branch routers as stub routers and variance enabled

  C. ISIS with the hub and spoke routers configured in two different areas

  D. iBGP with the hub routers set up as route reflectors

  Correct Answer: B

• Question 324:

  A company wants to deploy IPv6 within its existing network infrastructure. All current infrastructure equipment supports IPv6, and the company wants a migration strategy that must not require purchasing additional equipment. The plan must keep operational management costs low, support IPv6 multicast, and allow applications to migrate using DNS. Which strategy must the company choose?

  A. hybrid ISATAP tunnel model

  B. hybrid manual tunnel model

  C. dual-stack model

  D. service block model

  Correct Answer: C

• Question 325:

  What does the fabric data plane leverage in SD-Access Architecture?

  A. LISP protocol to resolve endpoint-to-location mapping

  B. IS-IS protocol to exchange link-state routing information

  C. MAC-in-IP encapsulation method to transport of the Layer 2 frame

  D. BGP protocol to advertise endpoint prefixes outside of the fabric

  Correct Answer: C

  Reference: https://www.cisco.com/c/en/us/td/docs/solutions/CVD/Campus/cisco-sda-design-guide.html

• Question 326:

  Refer to the exhibit.

  

  A network engineer must design a highly available OSPF solution based on these requirements:

  Traffic disruptions caused by link or node failures in Area-1 must be resolved in milliseconds.

  In the event of a failure, traffic must switch to another path without waiting for the OSPF dead interval.

  Which fault detection solution must the engineer choose?

  A. Decrease SPF timers to 100 ms.

  B. Tune the SPF delay and the OSPF LSA interval timers to 100 ms.

  C. Utilize BFD and tune the BFD timers to 100 ms.

  D. Enable IP SLA tracking for each OSPF peer.

  Correct Answer: C

• Question 327:

  Refer to the exhibit.

  

  An architect is designing a Layer 3 campus network. The design must hide network instability, reduce network overhead, and conserve critical device memory. Which route summarization solution must the architect select?

  A.

  The aggregation layer must advertise a default route toward the core layer.

  The VLAN subnets must be summarized into 10.0.0.0/16 at the aggregation layer and advertised to the access layer.

  B.

  The core layer must advertise a default route toward the aggregation layer.

  The VLAN subnets must be summarized into 10.0.0.0/16 at the aggregation layer and advertised to the core layer.

  C.

  The aggregation layer must advertise a default route toward the access layer.

  The VLAN subnets must be summarized into 10.0.0.0/16 at the aggregation layer and advertised to the core layer.

  D.

  The core layer must advertise a default route toward the aggregation layer.

  The VLAN subnets must be summarized into 10.0.0.0/16 at the access layer and advertised to the aggregation layer.

  Correct Answer: C

• Question 328:

  An engineer working for a service provider with an employee ID: 4604:68:004 prepared several designs for a traditional campus network. The design must allow the deployment of the same VLAN to any switch at the access layer and must support:

  fast convergence

  high availability

  resilience

  Which design must be selected?

  

  A. Option A

  B. Option B

  C. Option C

  D. Option D

  Correct Answer: D

• Question 329:

  Refer to the exhibit.

  

  A Cisco Catalyst switch is configured to allow only one MAC address to be learned manually on interface gig0/2. Which command must be run to dynamically learn the devices that are connected to the switch port?

  A. switchport port-security mac-address sticky

  B. switchport port-security mac-address auto

  C. switchport port-security aging

  D. switchport port-security maximum 1 auto

  Correct Answer: A

• Question 330:

  Which feature minimizes TLOC connections and reduces strain on the vSmart controller in an SD-WAN architecture?

  A. control-direction

  B. affinity

  C. color

  D. control-connections

  Correct Answer: B