Cisco 300-420 Practice Test - Questions Answers, Page 15
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Refer to the exhibit.
An engineer must design a WAN solution so that ISP-1 is always preferred over ISP-2. The path via ISP-2 is considered as a backup and must be used only when the path to ISP-1 is down. Which solution must the engineer choose?
A. R1:
- Routes advertised to ISP-1: 0x AS-path prepend
- Routes received from ISP-1: HIGH local-preference
- Routes advertised to R2: no action
- Routes received from R2: community NO-EXPORT
R2:
- Routes advertised to ISP-2:5x AS-path prepend
- Routes received from ISP-2: LOW local-preference
- Routes advertised to R1: community NO-ADVERTISE
- Routes received from R1: no action
R1:
- Routes advertised to ISP-1: 0x AS-path prepend
- Routes received from ISP-1: HIGH local-preference
- Routes advertised to R2: community NO-EXPORT
- Routes received from R2: no action
R2:
- Routes advertised to ISP-2: 5x AS-path prepend
- Routes received from ISP-2: LOW local-preference
- Routes advertised to R1: no action
- Routes received from R1: no action
R1:
- Routes advertised to ISP-1: 0x AS-path prepend
- Routes received from ISP-1: LOW local-preference
- Routes advertised to R2: community NO-ADVERTISE
- Routes received from R2: no action
R2:
- Routes advertised to ISP-2: 5x AS-path prepend
- Routes received from ISP-2: HIGH local-preference
- Routes advertised to R1: no action
- Routes received from R1: community NO-ADVERTISE
R1:
- Routes advertised to ISP-1: 5x AS-path prepend
- Routes received from ISP-1: LOW local-preference
- Routes advertised to R2: community NO-ADVERTISE
- Routes received from R2: no action
R2:
- Routes advertised to ISP-2: 0x AS-path prepend
- Routes received from ISP-2: HIGH local-preference
- Routes advertised to R1: community NO-EXPORT
- Routes received from R1: no action
Which topology within a network underlay eliminates the need for first hop redundancy protocols while improving fault tolerance, increasing resiliency, and simplifying the network?
virtualized topology
routed access topology
Layer 2 topology
logical fabric topology
Refer to the exhibit.
A customer is running HSRP on the core routers. Over time the company has grown and requires more network capacity. In the current environment, some of the downstream interfaces are almost fully utilized, but others are not. Which solution improves the situation?
Make router R2 active for half of the VLANs.
Add more interfaces to R1 and R2.
Configure port channel toward downstream switches.
Enable RSTP on the downstream switches.
An architect must develop a campus network solution that includes: logically segmented and isolated networks ability to communicate between network segments when required support for overlapping IP addresses widely available technologies to avoid purchasing specialized equipment Which solution must the architect select?
VSS with IGP
802.1Q with HSRP
vPC with HSRP
VRF-Lite with OSPF
Which feature is used to optimize WAN bandwidth of IGMP network traffic among WAN Edge routers in the same VPN?
IGMPv2
multicast RP
multicast-replicator
multicast service routes
Which consideration must be made when designing a Cisco SD-Access fabric underlay?
Subnets must be reduced to decrease latency.
Up to six control planes are supported.
The default MTU should be increased.
A unified policy must be used.
Which two functions does the control plane node provide in a Cisco SD-Access architecture? (Choose two.)
LISP proxy ETR
host tracking database
policy mapping
map server
endpoint registration
An ISP provides Layer 3 VPN service over MPLS to a customer with four branches and multiple CE routers at each branch. To exchange the routes that are learned from the CE routers, which BGP address family should the ISP activate among the PE routers?
address-family multicast
L2VPN EVPN
VPNv4 unicast
IPv4 unicast
In the SD-WAN underlay network, which WAN Edge VPN ID is defined as the transport VPN and is used to carry control traffic?
VPN 0
VPN 512
VPN 128
VPN 256
A company's security policy requires that all connections between sites be encrypted in a manner that does not require maintenance of permanent tunnels. The sites are connected through a private MPLS-based service that uses a dynamically changing key and spoke-to-spoke communication. Which type of transport encryption must be used in this environment?
GETVPN
DMVPN
GRE VPN
standard IPsec VPN
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