Click the exhibit button below. Given the slope-policy (below), which of the following statements are TRUE? (Choose two)
A. All out-of-profile traffic will be dropped before that of any in-profile traffic.
B. The discard probability slope of an in-profile traffic is steeper than that of an out-of-profile traffic.
C. When the shared buffer utilization reaches 55%, both in-profile and out-of-profile packets may be dropped.
D. The maximum probability with which an out-of-profile packet can be dropped is higher than that of an in-profile packet.
E. When the shared buffer utilization is at 61%, only in-profile packets are currently in the shared buffer pool.
How many queues are available for use on service egress within a VPLS service?
A. 1 multipoint and 8 unicast.
B. 8 queues, regardless of traffic type.
C. 8 unicast and 24 multipoint.
D. 8 unicast and 8 multipoint.
E. 16 queues, distributed as desired.
Click the exhibit button below. Given the output of the #show pools 1/2/2 network-egress command on a GigE port, what can the service provider deduce? (Choose two)
A. QoS is not configured on the router.
B. Packets in forwarding classes "be" and "12" are being queued.
C. Traffic belonging to forwarding class "ef" is not experiencing queuing delays.
D. Traffic belonging to forwarding class "11 "will never make use of the shared buffer pool.
E. Out-of-profile traffic in the shared buffer pool is being dropped.
It is necessary for Tier 1 schedulers to obtain bandwidth from a higher tier scheduler.
A. TRUE
B. FALSE
In which of the following scenarios is self-generated traffic QoS (sgt-QoS) useful?
A. EXP markings on transit control traffic are not set correctly.
B. The priority of all self-generated traffic needs to be lowered to allow all other traffic to take precedence.
C. The priority of various control packets requires special treatment throughout the network.
D. The BGP process is consuming too many CPU cycles and is impacting OSPF performance.
Which of the following statements describe the operation of WRED on the Nokia 7750 SR? (Choose three)
A. WRED monitors the shared buffer space utilization over a period of time.
B. WRED disables the TCP slow-start congestion control mechanism.
C. WRED uses two configurable slopes for each buffer pool: a high slope and a low slope.
D. WRED uses the shared buffer utilization, instead of the individual queue depth, to get a better picture of the average resource utilization of the shared buffer space.
E. WRED polices the shared buffer pool and marks all packets above a certain rate as "discard eligible."
Which of the following statements regarding the default scheduler in the Nokia 7750 SR are TRUE? (Choose two)
A. There are a maximum of 8 levels of priority serviced using a round-robin algorithm.
B. The default scheduler will spend an equal amount of time in each queue, as long as there is traffic present
C. The H1 internal forwarding class will receive its CIR before AF traffic.
D. Orphaned queues will be scheduled out of the BE queue.
E. A queue servicing EF and AF traffic will require explicit configuration to set the queue to expedited.
Why are the four QoS steps (classification, queuing, scheduling, and marking/remarking) executed twice for every packet entering a 7750 SR router?
A. Once before going through each of the redundant switching fabrics.
B. To protect against failure of either ingress or egress card.
C. Once before going through the switching fabric, and once more before going onto the egress port.
D. Once to decide if the packet is in-profile or out-of-profile, and once more to process the packet according to its profile.
According to the SAP-egress policy configured and applied, which queue will AF traffic use?
A. Queue 3, because it is explicitly defined in the SAP-egress policy.
B. Queue 2, because it is explicitly configured in the queue-group template.
C. The default, queue 1, because there is a mismatch between the mapping in the SAP-egress policy and in the queue-group template.
D. AF traffic is dropped because there is a mismatch between the mapping in the SAP-egress policy and in the queue-group template.
How many tiers of schedulers can be supported in hierarchical scheduling on the Nokia 7750 SR?
A. 8
B. 3
C. 5
D. 6
