Refer to the exhibit. According to the SAP-ingress QoS policy shown, which of the following statements about packets processed by policer 6 is TRUE?

Excess packets that arrive within a burst larger than CBS will be forwarded as out-of-profile

All forwarded packets will be in-profile

Packets forwarded above CIR will be marked out-of-profile and the rest will be in-profile

Excess packets that arrive within a burst larger than CBS will be forwarded as out-of-profile

All forwarded packets will be out-of-profile

How is buffer memory allocated per forwarding complex on a Nokia FP3-based IMM?

2 GB, with a minimum of 512 MB ingress and egress, and an additional 1 GB dynamically allocated

512 MB for network ports, 512 MB for access ports

3.84 GB dynamically allocated between ingress and egress

2 GB, with a minimum of 512 MB ingress and egress, and an additional 1 GB dynamically allocated

Which of the following is NOT a factor when deciding if a packet can be accepted into a queue?

Profile/priority state of a packet

Which of the following is an example of something that CAN be done with hierarchical policing (CFHP) but CANNOT be done with standalone policers?

Limiting the maximum forwarding rate of each individual policer and, at the same time, marking, packets as in-profile or out-of-profile.

Putting packets in a buffer as they are received, and marking packets as in-profile or out-of-profile as they are removed from the buffer.

Rate-limiting the collective output of several policers, and to reallocate bandwidth that is not utilized by some policers to other policers that need to use it.

Rate-limiting the collective output of several policers towards each egress FFPC, while maintaining control of the maximum overall forwarding rate.

When we select the adaptation rule ''min'', how are the operational CIR/PIR rates of a queue calculated?

They are chosen as the smallest multiple of the hardware rate step that is greater than or equal to the corresponding CIR/PIR administrative value.

The administrative PIR values are ignored and both operational rates are set to the minimum residual rate allowed by the hardware.

The administrative PIR value is ignored and both operational rates are set to the administrative CIR value.

They are chosen as the largest multiple of the hardware rate step that is less than or equal to the corresponding CIR/PIR administrative value.

They are chosen as the smallest multiple of the hardware rate step that is greater than or equal to the corresponding CIR/PIR administrative value.

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 biased round-robin.

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.

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 + 55 Mbps * 0.1 / 1.1 = 60 Mbps

Which of the following statements about port schedulers is TRUE?

A port scheduler can be implemented without HQoS on an access egress port.

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.

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 bursts.

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.

Which of the following statements about the default scheduler in the Nokia 7750 SR is TRUE?

A queue will be serviced as expedited if all of the forwarding classes mapped to it are expedited, regardless of its configured type.

A queue will be serviced as best-effort if all of the forwarding classes mapped to it are best-effort, regardless of its configured type.

A queue will be serviced as expedited if at least one of the forwarding classes mapped to it is expedited, regardless of its configured type.

A queue will be serviced as expedited if its type is configured as expedited, regardless of the forwarding classes mapped to it.

Refer to the exhibit. Given the scheduler-policy parameters shown, and assuming the offered rate of each queue is 10 Mbps, what are the operational PIR and CIR for queue 3?

PIR = 1.25 Mbps, CIR = 1.25 Mbps

Which of the following statements about the token buckets of a policer is TRUE?

When a packet arrives, the PIR bucket depth is checked and the packet is discarded if this bucket is full.

The CIR bucket of a policer is the reserved portion of its PIR bucket.

The CIR bucket of a policer has two thresholds: CBS and HPO.

Packets processed by the PIR bucket at an average rate above PIR will be forwarded as out-of-profile.

According to the SAP-egress policy configured and applied, which queue will AF traffic use?

Queue 3, because it is explicitly defined in the SAP-egress policy.

Queue 2, because it is explicitly configured in the queue-group template.

The default, queue 1, because there is a mismatch between the mapping in the SAP-egress policy and in the queue-group template.

AF traffic is dropped because there is a mismatch between the mapping in the SAP-egress policy and in the queue-group template.

Which of the following about scheduling is TRUE?

A scheduler policy applied to multiple SAPs within the same service will result in a single hardware scheduler operating across all SAPs within the service.

HQoS schedulers cannot be children of an egress port-scheduler.

HQoS schedulers provide a dynamic method of allocating scheduling resources to queues.

HQoS scheduler policies can be applied to an MDA to schedule network ingress traffic.

A scheduler policy applied to multiple SAPs within the same service will result in a single hardware scheduler operating across all SAPs within the service.

Which of the following statements about queue modes, and profile marking of packets when leaving a queue is FALSE?

For SAP egress, the profile marked at ingress may change based on the scheduling loop.

Profile-mode and priority-mode queues can only be configured on SAP ingress.

For network egress, egress re-classification can change the profile marked at ingress.

For SAP egress, the profile marked at ingress may change based on the scheduling loop.

For network ingress, the network policy can classify the packet as either in-profile, or out-of-profile.

What can be learned from the output of the command ''show pools 1/2/2 network-egress'' on the GigE port?

All incoming packets belonging to forwarding class ''l2'' are stored in the reserved buffer space.

All incoming packets belonging to forwarding class ''af'' are stored in the reserved buffer space.

All incoming packets belonging to forwarding class ''l1'' are stored in the reserved buffer space.

In-profile packets in the shared buffer space are being dropped.

According to the SAP-ingress QoS policy shown, which packets have a higher priority to enter queue 2?

Packets marked with dscp = af33

All packets mapped to queue 2 have the same priority to enter this queue.

There are no packets mapped to queue 2.

For which of the following queues does a Nokia 7750 SR allocate a separate hardware queue per each destination fast forward path complex (FFPC)?

An ingress unicast queue defined in a SAP-ingress policy

An egress unicast queue defined in a network queue policy

An ingress unicast queue defined in a SAP-ingress policy

An ingress multipoint queue defined in a SAP-ingress policy

An ingress multipoint queue defined in a network queue policy

Which of the following statements about the token buckets of a policer is FALSE?

The CIR has no influence on the forwarding rate of the policer traffic.

The CIR influences whether a packet is considered high-profile or low-profile.

The policer discards all incoming packets when PIR bucket reaches the MBS level.

PIR bucket forwards packets that arrive with rates above PIR as out-of-profile.

According to the SAP-ingress QoS policy shown, which of the following statements about processing of the packets by policers 3 and 4 is TRUE?

Policer 3 forwards packets as out-of-profile when its PIR bucket has 4000 tokens.

Policer 3 starts discarding low-priority packets when its PIR bucket has at least 3000 tokens.

Policer 4 forwards all its packets as out-of-profile.

Policer 4 starts discarding low-priority packets when its PIR bucket has at least 3000 tokens.

Which of the following statements is a characteristic of a CFHP arbiter?

An arbiter can adjust the bandwidth assigned to its child arbiters and child policers.

An arbiter can adjust the CIR of its child policers.

An arbiter rate-limits the collective output of several policers towards each egress FFPC.

An arbiter can adjust the bandwidth assigned to its child arbiters and child policers.

An arbiter does not need to honor the configurations of its child policers.

Which of the following statements about CFHP policing hierarchy is FALSE?

A child policer can have a priority level from 0 to 10.

The root arbiter can be the parent of a tier 2 arbiter.

A tier 1 arbiter can be the parent of a policer.

A child policer can have a priority level from 0 to 10.

Weight is used by a parent arbiter to allocate bandwidth among children of equal level

Nokia 4A0-107 Practice Test 6 - Free Online Exam Prep & Questions

A profile-mode queue is configured with the following attributes: MBS = 10 KB, CBS = 5 KB and High-Priority- Only = 30%. Assume there is no CBS overbooking, and the slope-policy is disabled. If the current queue depth is 8 KB, what will happen to an in-profile packet?

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Nokia 4A0-107 Practice Test 6

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