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Updated: Sep 01, 2025
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Cisco Quality of Service (QoS) Sample Questions:
1. Traffic classification using NBAR is configured using which IOS command?
A) router(config-if)# ip nbar protocol-discovery
B) router(config)# ip nbar port-map {protocol} [tcp|udp] {port-number} {port-number} ....
C) router(config)# ip nbar pdlm {pdlm-file}
D) router(config-cmap)# match protocol {protocol-name}
2. Switch port fa0/2 has been configured to connect an IP phone with an attached PC. Given the set of commands shown below, where does the trust boundary lie?
interface fa0/2 mls qos trust cos mls qos trust device cisco-phone switchport voice vlan 112
A) between the IP phone and the switch
B) between the access layer switch and the distribution layer switch
C) between the PC port and the LAN port on the IP phone
D) between the IP phone and the PC
3. DRAG DROP
Drop
4. When LLQ is being configured, which IOS command is used to limit the traffic rate on the priority queue even when the other class queues are not congested?
A) priority
B) queue-limit
C) hold-queue
D) bandwidth
E) police
5. DRAG DROP
Drop
Solutions:
| Question # 1 Answer: D | Question # 2 Answer: A | Question # 3 Answer: Only visible for members | Question # 4 Answer: E | Question # 5 Answer: Only visible for members |
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