File Info
| Exam | Nokia Quality of Service |
| Number | 4A0-107 |
| File Name | Nokia.4A0-107.VCEplus.2025-02-03.113q.vcex |
| Size | 3 MB |
| Posted | Feb 03, 2025 |
| Download | Nokia.4A0-107.VCEplus.2025-02-03.113q.vcex |
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Demo Questions
Question 1
The SAP-ingress policy shown below is applied properly to a Nokia 7750 SR. A traffic stream is received from an IP address of 192.168.2.200 with DSCP and dot1p set to EF and 4, respectively. Which forwarding class and priority level is used for this traffic stream?
- FC H1, high
- FCH1, low
- FCAF, high
- FCAF, low
Correct answer: A
Question 2
Which of the following statements about a SAP-ingress policy is FALSE?
- It maps customer traffic to forwarding classes on ingress.
- It can use customer QoS markings to do the mapping.
- The default SAP-ingress policy classifies all traffic into FC ''be'' with low priority.
- It serves the classification, queuing, and marking functions of QoS but does not serve scheduling
Correct answer: D
Question 3
Refer to the exhibit.
Based on the image shown above, and assuming that the default scheduler of the Nokia 7750 SR is on an IOM2 card, in which order will packets be scheduled?
- Queue 6 within-CIR packets, then queue 5 within-CIR packets, then queue 5 and queue 6 above-CIR packets in round-robin.
- Queue 6 within-CIR packets, then queue 5 within-CIR packets, then queue 5 and queue 6 above-CIR packets in biased round-robin.
- Queue 6 within-CIR packets, then queue 5 within-CIR packets, then queue 6 above-CIR packets, and finally queue 5 above-CIR packets.
- Queue 6 and queue 5 within-CIR packets in biased round-robin, then queue 5 and queue 6 above-CIR packets in round-robin.
Correct answer: B
Question 4
When using an egress port scheduler, which scheduling loop priority are orphaned queues serviced on?
- 1st
- 8th
- 9th
- 17th
Correct answer: A
Question 5
Assume all transmitted frames on a SONET port are 1500 bytes and that the average frame overhead has been configured as 10%. If the total bandwidth of all queues, excluding overhead, needs to be guaranteed at 55 Mbps, how much bandwidth should be configured for the egress port scheduler applied on that port?
- 55 Mbps / 1.1 = 50 Mbps
- 55 Mbps
- 55 Mbps + 55 Mbps * 0.1 / 1.1 = 60 Mbps
- 55 Mbps * 1.1 = 60.5 Mbps
Correct answer: D
Question 6
Which of the following statements about port schedulers is TRUE?
- A port scheduler can only be implemented on a network egress port when queue-groups are configured for that port.
- A port scheduler can be implemented on an access ingress port.
- A port scheduler can be implemented without HQoS on an access egress port.
- A port scheduler can be implemented on a network ingress port.
Correct answer: C
Question 7
What type of unwanted packet drops can the proper configuration of a queue's burst-limit parameter prevent?
- Packet drops in the local queue resulting from traffic congestion.
- Packet drops on the downstream nodes resulting from traffic congestion.
- Packet drops in the local queue resulting from traffic bursts.
- Packet drops on the downstream nodes resulting from traffic bursts.
Correct answer: C
Question 8
Which of the following statements about network QoS policies is FALSE?
- Classification rules must specify both an FC and a profile for the packets.
- A network policy is applied at a physical port.
- Classification is performed with behavior-aggregate statements only.
- Match criteria can be chosen from dot1p, DSCP, and EXP fields in the packet.
Correct answer: C
Question 9
The network QoS policy shown below is applied properly to a Nokia 7750 SR acting as a transit Label Switch Router (LSR) for a given MPLS tunnel. A packet is received inside the MPLS tunnel with EXP=4, dot1p=4, and DSCP=AF. Which forwarding class is assigned to this packet?
- L2
- H1
- AF
- BE
Correct answer: B
Question 10
Which parameter can be configured in a network ingress QoS policy?
- The priority (low/high) to be assigned to the packets.
- The profile (in/out) to be assigned to the packets.
- The queues to be assigned to the forwarding classes.
- The markings to be marked on the packets.
Correct answer: B
