Cisco CCNP Security Core (SCOR) 350-701Network SecurityEasy
A company is experiencing slow network performance, and users are reporting frequent connection drops when accessing a specific critical application. A network engineer suspects that some network devices are being overwhelmed due to excessive traffic. The engineer needs to implement a mechanism to prioritize the critical application's traffic over less important traffic to ensure its availability and performance. Which network security technology can be used to achieve this prioritization?
- AVirtual Private Network (VPN)
- BQuality of Service (QoS)
- CNetwork Address Translation (NAT)
- DDemilitarized Zone (DMZ)
Show answer & explanationAnswer & explanation
Correct answer: B. Quality of Service (QoS)
Quality of Service (QoS) is specifically designed to manage and prioritize network traffic. It allows critical applications to receive preferential treatment, ensuring their performance and availability even during periods of network congestion. NAT translates IP addresses. A DMZ is a network segment for public-facing servers. VPNs provide secure tunnels for data, not traffic prioritization.
Why the other options are wrong
- A. A VPN creates a secure, encrypted tunnel over a public network but does not inherently provide traffic prioritization capabilities.
- C. NAT translates IP addresses and does not provide mechanisms for prioritizing network traffic.
- D. A DMZ is a network segment for public-facing servers and is unrelated to traffic prioritization.
QoS for Application Prioritization
Quality of Service (QoS) is a set of technologies that manage network traffic to ensure the performance of critical applications by prioritizing their data over less important traffic.
- Prioritizes critical application traffic.
- Manages bandwidth and latency.
- Ensures availability and performance during congestion.
Memory trick: Traffic needs rules, and some cars are more important.