Free Nokia Quality of Service Exam 4A0-107 Exam Practice Test

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

• The default scheduler spends an equal amount of time servicing each queue that has traffic to be sent out.
• Queue-type can be configured as best-effort, expedite, or auto-expedite.
• A queue will be serviced as expedited if its type is configured as expedited, regardless of the forwarding classes mapped to it.
• A queue configured as auto-expedited will be an expedited queue as long as no Best Effort FC is mapped to it.

While deciding how to share the available bandwidth among its children, when does a port scheduler consider the parameter “level” of a child?

• During the allocation of within-CIR bandwidth.
• During the allocation of above-CIR bandwidth.
• During the allocation of both within-CIR and above-CIR bandwidth.
• The port scheduler does not use the level of a child for making bandwidth allocation decisions

On the Nokia 7750 SR, what is a slope policy used for?

• Defining the slope of the TCP slow-start mechanism for self generated traffic.
• Defining the slope of the scheduling rate per forwarding class when using HQoS.
• Defining the high and low slope values when deploying buffer admission control for UDP traffic in the committed buffer pool.
• Defining the high and low slope values when deploying buffer admission control for TCP traffic in the shared buffer pool.
• Defining the high and low slope values when deploying buffer admission control for TCP traffic in the committed buffer pool.

Which of the following is NOT an adaptation rule supported on the Nokia 7750 SR for calculating the operational CIR/PIR of a queue?

• Closest
• Average
• Min
• Max

In which policies, on the Nokia 7750 SR. is classification performed? (Choose three)

• SAP-ingress policy
• SAP-egress policy
• IP-criteria policy
• Network-queue policy
• Slope policy
• Network policy

Which of the following statements about behavior aggregate classification is TRUE?

• It sets both the forwarding class and the packet’s dot1p, lsp-exp, precedence, or dscp field to the same value.
• It groups all packets together into a single aggregate stream, and gives all packets the same treatment.
• It copies the three most significant bits in the packet’s dscp field into the forwarding class.
• It assigns a forwarding class based on the packet’s dot1p, lsp-exp, precedence, or dscp value.

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

In which policies, on the Nokia 7750 SR. is classification performed? (Choose three)

• SAP-ingress policy
• SAP-egress policy
• IP-criteria policy
• Network-queue policy
• Slope policy
• Network policy

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.

Which of the following self-generated traffic applications is considered “protocol” traffic, as opposed to “management” traffic?

• BGP
• Telnet
• ICMP
• SNMP