What are three reasons to collect Netflow data on a company network? (Choose three.)

What are three reasons to collect Netflow data on a company network? (Choose three.)
A . To identify applications causing congestion
B . To authorize user network access
C . To report and alert link up / down instances
D . To diagnose slow network performance, bandwidth hogs, and bandwidth utilization
E . To detect suboptimal routing in the network
F . To confirm the appropriate amount of bandwidth that has been allocated to each Class of Service

Answer: A, D, F

Explanation:

NetFlow facilitates solutions to many common problems encountered by IT professionals.

+ Analyze new applications and their network impact

Identify new application network loads such as VoIP or remote site additions.

+ Reduction in peak WAN traffic

Use NetFlow statistics to measure WAN traffic improvement from application-policy changes; understand who is utilizing the network and the network top talkers.

+ Troubleshooting and understanding network pain points

Diagnose slow network performance, bandwidth hogs and bandwidth utilization quickly with command line interface or reporting tools. -> D is correct.

+ Detection of unauthorized WAN traffic

Avoid costly upgrades by identifying the applications causing congestion. -> A is correct.

+ Security and anomaly detection

NetFlow can be used for anomaly detection and worm diagnosis along with applications such as Cisco CS-Mars.

+ Validation of QoS parameters

Confirm that appropriate bandwidth has been allocated to each Class of Service (CoS) and that no CoS is over- or under-subscribed.-> F is correct.

Reference: http://www.c

isco.com/c/en/us/products/collateral/ios-nx-os-software/ios-netflow/prod_white_paper0900aecd80406232.html

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