300-320 · Question #269
Why is QoS important for in-band management?
The correct answer is A. It supports remote management when traffic volume is high. QoS is critical for in-band management because it ensures management traffic is prioritized and delivered even when the network is congested with high data volumes.
Question
Why is QoS important for in-band management?
Options
- AIt supports remote management when traffic volume is high.
- BIt supports proper routing.
- CIt supports network security against DoS attacks and worm outbreaks.
- DIt supports network redundancy.
How the community answered
(26 responses)- A88% (23)
- B4% (1)
- D8% (2)
Why each option
QoS is critical for in-band management because it ensures management traffic is prioritized and delivered even when the network is congested with high data volumes.
In-band management uses the same network links as production data traffic, so when traffic volume is high, management packets can be dropped or delayed; QoS queuing policies prioritize management traffic to ensure remote access (SSH, SNMP, etc.) remains available during congestion.
Routing decisions are determined by routing protocol metrics and administrative distance, not by QoS policies applied to management traffic.
Protection against DoS attacks and worm outbreaks is a function of security tools such as ACLs, firewalls, and rate-limiting, not QoS applied to management traffic.
Network redundancy is achieved through redundant links and protocols such as HSRP or OSPF, not through QoS prioritization.
Concept tested: QoS prioritization of in-band management traffic during congestion
Source: https://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/WAN_and_MAN/QoS_SRND/QoS-SRND-Book/QoSIntro.html
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