300-420 Online Practice Questions and Answers

An engineer must design a VPN solution for a company that has multiple branches connecting to a main office. What are two advantages of using DMVPN instead of IPsec tunnels to accomplish this task? (Choose two.)

A. support for AES 256-bit encryption

B. greater scalability

C. support for anycast gateway

D. lower traffic overhead

E. dynamic spoke-to-spoke tunnels

A network solution is being designed for a company that connects to multiple Internet service providers. Which Cisco proprietary BGP path attribute will influence outbound traffic flow?

A. Local Preference

B. MED

C. Weight

D. AS Path

E. Community

An engineer is upgrading a company's main site to include a connection to a second ISP. The company will receive full Internet routing tables from both ISPs via BGP. The engineer must ensure that the company does not become a transit autonomous system. Which solution should be included in this design?

A. Tag incoming routes from both ISPs with BGP community no-export.

B. Lower the MED for updates sent to the secondary ISP.

C. Use a route-map to prevent all prefixes from being advertised to either ISP.

D. Modify the local-preference for routes incoming from the primary ISP.

A network engineer must design a multicast solution to prevent the spoofing of multicast streams and ensure efficient bandwidth utilization. The network will be merged with another multicast domain in the future, and the merge must require minimum effort. Which two solutions meet the customer requirements? (Choose two.)

A. PIM-SSM

B. IGMPv3

C. IGMPv2

D. PIM-SM

E. MSDP

Refer to the exhibit.

An architect is designing a network for a customer supporting a Wake-on-LAN application. Which solution must the architect choose?

A. IP directed-broadcasts on R1

B. spanning-tree uplinkfast on SW1

C. spanning-tree uplinkfast on SW2

D. IP directed-broadcasts on R2

An architect must design an IPv6 migration solution for a corporation with remote offices to support:

1.

The customer has IPv4 peering with their service provider.

2.

IPv6 users need access to IPv4 and IPv6 resources.

3.

Existing content providers will migrate to IPv6 in the next two years.

4.

Users will be migrated in a phase-by-phase approach.

Which migration solution must the architect choose?

A. NAT46

B. tunneling

C. NAT64

D. dual-stack

Refer to the exhibit.

An architect is designing an EIGRP solution based on these requirements:

1.

Traffic forwarding should use the best two paths while all links are available

2.

Single path failure must not impact traffic between branch and HQ Which solution must the architect select?

A. Maximum-paths 2

B. Add-paths 2

C. Metric weights 010100

D. Variance 2

Which type of rendezvous point deployment is standards-based and supports dynamic RP discovery?

A. bootstrap router

B. Anycast-RP

C. Auto-RP

D. static RP

What are two characteristics of a migration from an IP-VPN service to a Cisco SD-WAN architecture? (Choose two.)

A. distributed control plane

B. increased security

C. increased scalability

D. centralized application policies

E. increased solution complexity

What are two advantages of the Cisco SD-WAN technology? (Choose two.)

A. easier deployment

B. improved application experience

C. optimized cloud connectivity

D. consistent connectivity

E. proactive network management