300-420 Practice Test Questions

318 Questions


When a network is designed using IS-IS protocol, which two circuit types are supported?
(Choose two.)


A.

nonbroadcast multiaccess


B.

multiaccess


C.

point-to-multipoint


D.

nonbroadcast


E.

point-to-point





B.
  

multiaccess



E.
  

point-to-point



Which two statements about VRRP advertisements are true? (Choose two.)


A.

They are sent from the master router and standby routers.


B.

They include VRRP timer information.


C.

They are sent only from the master router.


D.

They include priority information.


E.

They are sent every three seconds by default.





C.
  

They are sent only from the master router.



D.
  

They include priority information.




Refer to the exhibit. An engineer must design an automatic failover solution. The solution
should allow HSRP to detect a WAN 1 failure and initiate an automatic failover, making
router R2 the active HSRP router. Which two solutions should the engineer choose?
(Choose two.)


A.

Implement Enhanced Object Tracking on router R1


B.

use a floating static route


C.

Implement IP SLA on router R1


D.

Implement PBR on router R1


E.

use IP source routing





A.
  

Implement Enhanced Object Tracking on router R1



C.
  

Implement IP SLA on router R1




Refer to the exhibit. An architect must create a stable and scalable EIGRP solution for a
customer. The design must:
•conserve bandwidth, memory, and CPU processing
•prevent suboptimal routing
•avoid any unnecessary queries
Which two solutions must the architect select? (Choose two.)


A.

route summarization


B.

prefix lists


C.

distribute lists


D.

stub routing


E.

static redistribution





A.
  

route summarization



C.
  

distribute lists




Refer to the exhibit. The connection between SW2 and SW3 is fiber and occasionally
experiences unidirectional link failure. An architect must optimize the network to reduce the
change of layer2 forwarding loops when the link fails. Which solution should the architect
include?


A.

Utilize 8PDU filter on SW3.


B.

Utilize loop guard on SW2


C.

Utilize BPDU guard on SW1


D.

Utilize root guard on SW1





B.
  

Utilize loop guard on SW2



An engineer is tasked with designing a dual BGP peering solution with a service provider.
The design must meet these conditions:
The routers will not learn any prefix with a subnet mask greater than /24.
The routers will determine the routes to include in the routing table based on the
length of the mask alone.
The routers will make this selection regardless of the service provider
configuration.
Which solution should the engineer include in the design?


A.

Use a route map and access list to block the desired networks, and apply the route map to BGP neighbors inbound.


B.

Use a route map and prefix list to block the desired networks, and apply the route map to BGP neighbors outbound.


C.

Use an IP prefix list to block the desired networks and apply the IP prefix list to BGP neighbors outbound.


D.

Use an IP prefix list to block the desired networks and apply the IP prefix list to BGP
neighbors inbound.





D.
  

Use an IP prefix list to block the desired networks and apply the IP prefix list to BGP
neighbors inbound.



Refer to the exhibit.

F48C9ACDC725EA850EC2476EE1E
An architect must design a solution that uses the direct link between R1 and R2 for traffic
from 10.10.10.0/24
toward network 10.10.20.0/24. Which solution should the architect include in the design?


A.

Configure the OSPF cost of the link to a value lower than 30.


B.

Lower the Administrative Distance for OSPF area 0.


C.

Place the link into area 2 and install a new link between R1 and R2 in area 0.


D.

Configure the link to provide multiarea adjacency





A.
  

Configure the OSPF cost of the link to a value lower than 30.



Drag and drop the descriptions from the left onto the Cisco SD-WAN component they describe on the right






Which two BGP features will result in successful route exchanges between eBGP
neighbors sharing the same
AS number? (Choose two.)


A.

advertise-best-external


B.

bestpath as-path ignore


C.

client-to-client reflection


D.

as-override


E.

allow-as-in





D.
  

as-override



E.
  

allow-as-in



Which two best practices must be followed when designing an out-of-band management network? (Choose two.)


A.

Enforce access control


B.

Facilitate network integration


C.

Back up data using the management network


D.

Ensure that the management network is a backup to the data network


E.

Ensure network isolation





A.
  

Enforce access control



E.
  

Ensure network isolation



What is a benefit of using VRRPv3 as compared to VRRPv2?


A.

VRRPv3 supports IPv4 and IPv6


B.

VRRPv3 supports authentication


C.

VRRPv3 supports preemption


D.

VRRPv3 supports stateful switchover





A.
  

VRRPv3 supports IPv4 and IPv6



Which method will filter routes between EIGRP neighbors within the same autonomous system?


A.

distribute-list


B.

policy-based routing


C.

leak-map


D.

route tagging





A.
  

distribute-list




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