Cisco 300-420 Practice Test - Questions Answers, Page 6
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When designing interdomain multicast, which two protocols are deployed to achieve communication between multicast sources and receivers? (Choose two.)
IGMPv2
BIDIR-PIM
MP-BGP
MSDP
MLD
A branch office has a primary L3VPN MPLS connection back to the main office and an IPSEC VPN tunnel that serves as backup. Which design ensures that data is sent over the backup connection only if the primary MPLS circuit is down?
Use EIGRP to establish a neighbor relationship with the main office via L3VPN MPLS and the IPSEC VPN tunnel.
Use BGP with the multipath feature enabled to force traffic via the primary path when available.
Use static routes tied to an IP SLA to prefer the primary path while a floating static route points to the backup connection.
Use OSPF with a passive-interface command on the backup connection.
Company A recently acquired another company. Users of the newly acquired company must be able to access a server that exists on Company A’s network, both companies use overlapping IP address ranges. Which action conserves IP address space and provides access to the server?
Use a single IP address to create overload NAT
Use a single IP address to create a static NAT entry
Build one-to-one NAT translation for every user that needs access
Re-IP overlapping address space in the acquired company
In an SD-WAN architecture, which methods are used to bootstrap a vEdge router?
DHCP options or manual configuration
vManage or DNS records
ZTP or manual configuration
DNS records or DHCP options
An engineer must propose a QoS architecture model that allows an application to inform the network of its traffic profile and to request a particular type of service to support its bandwidth and delay requirements. The application requires consistent and dedicated bandwidth end to end. Which QoS architecture model meets these requirements?
DiffServ
LLQ
WRED
IntServ
Which two statements about VRRP advertisements are true? (Choose two.)
They are sent from the master router and standby routers.
They include VRRP timer information.
They are sent only from the master router.
They include priority information.
They are sent every three seconds by default.
Which two statements about VRRP object tracking are true? (Choose two)
The priority of a VRRP device can change in accordance with the up or down status of a VRRP object
The VRRP interface priority must be manually configured by the administrator
A VRRP group can track only one object at a time
VRRP can track the status of interfaces and routes
VRRP supports only interface tracking
Which common issue causes intermittent DMVPN tunnel flaps?
a routing neighbor reachability issue
a suboptimal routing table
interface bandwidth congestion
that the GRE tunnel to hub router is not encrypted
Which two best practices must be followed when designing an out-of-band management network?
(Choose two.)
Enforce access control
Facilitate network integration
Back up data using the management network
Ensure that the management network is a backup to the data network
Ensure network isolation
A network administrator is troubleshooting a DMVPN setup between the hub and the spoke. Which action should the administrator take before troubleshooting the IPsec configuration?
Verify the GRE tunnels.
Verify ISAKMP.
Verify NHRP.
Verify crypto maps.
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