Cisco 300-420 Practice Test - Questions Answers, Page 21
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DRAG DROP
Drag and drop the steps WAN Edge performs when on-boarded into the Cisco SD-WAN overlay from the left into the order they are completed on the right.
An engineer must peer with an ISP for internet connectivity using BGP, initially, the engineer wants to receive only specific prefixes from the ISP and a default route. However, the solution must provide the flexibility to add prefixes in the future at short notice. The ISP has a two-week change process in place. Which route filtering solution must the engineer employ?
Request a limited internet routing table and a default route from the ISP and configure the BGP max-limit to 1 with an access list that permits only the specific internet prefixes and blocked networks
Request only the required prefixes and default route be advertised from the ISO with whitelisted networks
Request a full internet routing table and a default route from the ISP and configure inbound route filtering with a prefix list that permits the default route and required prefixes
Configure outbound route filtering on the enterprise and ISP so that the enterprise tell the ISP which prefixes are required
In a cisco SD-Access brownfield deployment scenario, which configuration deployment must be taken with Cisco DNA center?
Subnet stretching
LAN automation
Automated UNDERLAY
Manual underlay
Refer to the exhibit.
A network engineer must design a multicast solution based on:
* Many-to-many communications between the users and sources
* Support of up to 50 multicast sources
* Users that must register for steams
Which multicast solution must the engineer select?
Any Source Multicast
Bidirectional PIM
Source-Specific Multicast
Multicast VPN
A customer plans to adopt distributed QoS in their enterprise WAN. The policy must allow for individual packet marking according to the type of treatment required and for forwarding based on hop-by-hop treatment locally defined on each device. Which technology must the customer select?
CBWFQ
LLQ
Diffserv
IntServ
Refer to Exhibit.
Refer to the exhibit. A customer experienced an unexpected network outage when the link between
R1 and R2 went down. An architect must design a solution to ensure network continuity in the event the link fails again. Which solution should the design include?
Make R31 an L1 router.
Make R3 an L1L2 router
Make Area 0 L2-only
Make R11 an L2 router.
Refer to Exhibit.
Refer to the exhibit A customer wants to adopt a dynamic site-to-site VPN solution to secure communication for VoIP, video, and FTP traffic between the remote branches and the headquarters.
The customer also wants the branches to communicate directly, thereby reducing traffic at the headquarters location. The solution must consider that the branch routers are limited in available memory. Which VPN solution meets these requirements?
DMVPN Phase 2 Hub and Spoke design
DMVPN Phase 3 Hub and Spoke design
DMVPN Phase 1 Hub and Spoke design
DMVPN Phase 3 Hierarchical design
Refer to Exhibit.
Refer to the exhibit. An engineer is planning an IPv4 to IPv6 migration solution for a customer. The routers in the network can support IPv4 and IPv6, except for the DWDM routers. The DWDM routers provide a Layer 2 link in which the routers peer directly with each other across a DWDM circuit. The circuit also provides connectivity between the mail servers. Which IPv6 migration technique must the engineer deploy?
dual-stack
6to4
ISATAP
6rd
An engineer must design a routing solution for a company that is single-homed to an ISP. The company's goal is to run BGP between the CE and the PE devices. To support running BGP, the company obtained a public AS number and IP subnet from ARIN. Which solution must the engineer select?
• The customer announces the public IP subnet to the ISP
• The ISP announces the default route to the customer.
• The customer announces the public IP subnet to the ISP
• The ISP announces the BGP table to the customer
• The ISP announces the customer public IP subnet.
• The ISP announces the partial BGP table to the customer.
• The customer announces the default route to the ISP
• The ISP announces the default route to the customer
Which function do reverse path forwarding mechanisms perform in a multicast deployment?
They notify the upstream router of multicast traffic.
They send PIM prune message toward multicast sources.
They eliminate overlapping multicast addresses
They prevent loops and duplicate packets.
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