CAS-001 · Question #309
A large enterprise introduced a next generation firewall appliance into the Internet facing DMZ. All Internet traffic passes through this appliance. Four hours after implementation the network…
The correct answer is B. When testing the appliance. Performance and latency issues under realistic traffic loads should have been discovered during the testing phase - before the appliance was deployed into the production DMZ. Answer B is correct because proper pre-deployment testing would include load testing and throughput…
Question
A large enterprise introduced a next generation firewall appliance into the Internet facing DMZ. All Internet traffic passes through this appliance. Four hours after implementation the network engineering team discovered that traffic through the DMZ now has un-acceptable latency, and is recommending that the new firewall be taken offline. At what point in the implementation process should this problem have been discovered?
Options
- ADuring the product selection phase
- BWhen testing the appliance
- CWhen writing the RFP for the purchase process
- DDuring the network traffic analysis phase
How the community answered
(29 responses)- A10% (3)
- B83% (24)
- C3% (1)
- D3% (1)
Explanation
Performance and latency issues under realistic traffic loads should have been discovered during the testing phase - before the appliance was deployed into the production DMZ. Answer B is correct because proper pre-deployment testing would include load testing and throughput benchmarking under traffic volumes representative of peak production usage. Option A (product selection) could catch this if vendor specs were evaluated, but vendor-published specs often reflect ideal lab conditions. Option C (writing the RFP) is too early - you can specify performance requirements in the RFP, but you cannot discover actual performance issues until you test. Option D (network traffic analysis) is a prerequisite to testing but does not itself reveal the appliance's performance ceiling. Testing the appliance under realistic conditions before going live is the correct answer.
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