ENSA - Module 9 - QoS Concepts

What is the term used to indicate a variation of delay?

• Mismatch
• Jitter
• Latency
• Throughput
• Interference

Which type of traffic does Cisco recommend be placed in the strict priority queue (PQ) when low latency queuing (LLQ) is being used?

• Management
• Data
• Video
• Voice
• Encrypted

Which model is the only QoS model with no mechanism to classify packets?

• Best-effort
• IntServ
• DiffServ
• WFQ
• CBWFQ

What are two characteristics of voice traffic? (Choose two.)

• It is bursty
• Can tolerate latency up to 400 ms
• It is delay sensitive
• It is insensitive to packet loss
• It consumes few network resources

Which of the following is a Queuing Management Techniques?

• TOS
• IP precedence
• FIFO
• COS
• DNCP

Scheduler policies are applied to which interfaces?

• Ingress interfaces only
• Loopback interfaces
• Both ingress and egress interfaces
• Egress interfaces only
• Serial interfaces only

Which transport layer protocol is used for voice traffic?

• XNS
• TCP
• HTTPS
• MTU
• UDP

What are the typical congestion points? (Choose three)

• Aggregation
• Speed mismatch
• LAN to LAN connection
• LAN to WAN connection
• VoIP

What is a Characteristics of voice traffic

• Bursty
• Latency >150ms
• Latency < 150ms
• TCP priority
• Greedy

Which is a queuing algorithm?

• LWQ
• WFQ
• FILO
• CBLFQ
• WQ