300-420 Practice Test practice questions, page 16 of 17, with answer review and explanations.
Question 76
An engineer must design a large Layer 2 domain that contains hundreds of switches and VLANs. The engineer's primary goals are to: ✑ Efficiently utilize the bandwidth of all links ✑ Avoid Layer 2 loops ✑ Cause minimal impact on switch CPU and memory Which technology should the engineer include in the design?
MST
Rapid PVST+
RSTP
PVST+
Question 77
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.)
implement IP SLA on router R1
implement PBR on router R1
implement Enhanced Object Tracking on router R1
use IP source routing
use a floating static route
Question 78
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
Question 79
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.
Question 80
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?