QoS INTERVIEW QUESTIONS
- What is difference b/w Layer2 and Layer3 QoS?
- What is the basic difference b/w TCP and UPD traffic?
- Define Jitter with an example.
- What is difference b/w the clock-rate and bandwidth command configured on the WAN interfaces?
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- Name various types of Delays experienced while sending the traffic.
- Name few Classification and marking tools used in QoS.
- List various Queuing tools/methods used for QoS.
- Also list few shaping, congestion avoidance, and link efficiency tools used for QoS.
- Describe the QoS models IntServ and DiffServ.
- What is meant by Per Hop Behavior(PHB) and DSCP in DiffServ QoS Model?
- What is MQC with some example configurations and also list the advantages of MQC feature.
- What is AutoQoS and its use?
- Name the QoS field carried under 802.1Q Header, IP header, and MPLS header?
- What is purpose of TX ring and TX queue on Cisco routers?
- What is CBWFQ?
- What is difference b/w Traffic Shaping and Traffic Policying with example.
- Explain the terms Tc, Bc, Be, CIR, Access Rate.
- Explain the concept of Token Buckets?
- Explain the term TCP Starvation.
- Define the congestion avoidance terms RED and WRED.
- Explain the need of QoS in Layer 2 devices?
