Enterprise Module 9.5 QoS Implementation Tech

Avoiding Packet Loss: What is the main cause of packet loss?

• a) TCP congestion
• b) Fragile flows
• c) Link capacity
• d) Buffer space

Avoiding Packet Loss: Which queuing algorithms can guarantee bandwidth and prioritize forwarding for drop-sensitive applications?

• a) FIFO and WFQ
• b) WFQ and LLQ
• c) CBWFQ and LLQ
• d) FIFO and CBWFQ

Avoiding Packet Loss: How can drops in sensitive applications be prevented?

• a) By increasing buffer space
• b) By guaranteeing enough bandwidth
• c) By dropping lower-priority packets
• d) By adjusting the window size of TCP sessions

QoS Tools: How does WRED help in congestion avoidance?

• a) It analyzes traffic flows
• b) It regulates TCP data traffic
• c) It queues traffic for resource availability
• d) It selectively drops or delays traffic

QoS Tools: What does congestion management involve in QoS?

• a) Analyzing traffic flows
• b) Regulating TCP data traffic
• c) Allotting network resources
• d) Queuing traffic for resource availability

Classification and Marking: What is the purpose of classification and marking in QoS?

• a) To determine the class of traffic
• b) To regulate packet transmission
• c) To manage network congestion
• d) To increase link capacity

Classification and Marking: Which methods can be used for classifying traffic at Layer 2 and 3?

• a) Network Based Application Recognition (NBAR)
• b) Interfaces and class maps
• c) ACLs and NBAR
• d) Interfaces and ACLs

Classification and Marking: What does marking involve in QoS?

• a) Identifying traffic flows
• b) Regulating packet transmission
• c) Adding a value to the packet header
• d) Increasing link capacity

Classification and Marking: When should marking be done in QoS implementation?

• a) As close to the destination device as possible
• b) At Layer 4 to 7 of the OSI model
• c) As close to the source device as possible
• d) At the network edge

Marking at Layer 2: What is the QoS prioritization scheme in the 802.1Q standard?

• a) IEEE 802.1p
• b) Tag Control Information (TCI)
• c) Class of Service (CoS)
• d) Layer 2 Ethernet frame