Question 1

Which of the following criteria is an IP multi-field classification option?

Accepted Answer

A)  prec 
B)  lsp-exp 
C)  src-ip 
D)  do1p 
A)  prec 
B)  lsp-exp 
C)  src-ip 
D)  do1p

Question 2

In the image shown above, the network QoS policy is applied properly to a Nokia 7750 SR. An MPLS packet with dot1p=1, EXP=4, and DSCP=AF is received. Which forwarding class and profile is assigned to this packet?

Accepted Answer

A)  EF, in 
B)  H1, out 
C)  BE, out 
D)  L1, in 
A)  EF, in 
B)  H1, out 
C)  BE, out 
D)  L1, in

Question 3

A packet is to be encapsulated inside an MPLS tunnel which consists of two MPLS headers at the first network egress. Which of the MPLS EXP fields will be marked?

Accepted Answer

A)  The EXP field in the bottom MPLS header will be marked. 
B)  The EXP field in both the top and bottom MPLS headers will be marked. 
C)  For Layer 2 services, the top MPLS header will be marked; for Layer 3 services, the bottom MPLS header will be marked. 
D)  The EXP field in the top MPLS header will be marked. 
E)  Neither the top nor the bottom EXP field will be marked since EXP remarking can only be done on the network ingress. 
A)  The EXP field in the bottom MPLS header will be marked. 
B)  The EXP field in both the top and bottom MPLS headers will be marked. 
C)  For Layer 2 services, the top MPLS header will be marked; for Layer 3 services, the bottom MPLS header will be marked. 
D)  The EXP field in the top MPLS header will be marked. 
E)  Neither the top nor the bottom EXP field will be marked since EXP remarking can only be done on the network ingress.

Question 4

Which ports on the same MDA share a buffer pool in a Nokia 7750 SR?

Accepted Answer

A)  Access ingress ports 
B)  Access egress ports 
C)  Network ingress ports 
D)  Network egress ports 
A)  Access ingress ports 
B)  Access egress ports 
C)  Network ingress ports 
D)  Network egress ports

Question 5

Which of the following statements regarding the egress port scheduler is TRUE?

Accepted Answer

A)  The egress port scheduler can have up to 17 children spread across 8 levels. 
B)  Multiple egress port schedulers can be assigned to a single port with many HQoS children. 
C)  Multiple HQoS policies can be children of a single port scheduler. 
D)  Multiple egress port schedulers can be children of a single HQoS scheduler. 
A)  The egress port scheduler can have up to 17 children spread across 8 levels. 
B)  Multiple egress port schedulers can be assigned to a single port with many HQoS children. 
C)  Multiple HQoS policies can be children of a single port scheduler. 
D)  Multiple egress port schedulers can be children of a single HQoS scheduler.

Question 6

Which of the following statements regarding the default scheduler in the Alcatel-Lucent 7750 SR are TRUE? (Choose two)

Accepted Answer

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. 
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.

Question 7

Which of the following statements about marking packets is TRUE?

Accepted Answer

A)  Packets corresponding to a layer-2 service can be pre-marked on SAP-ingress. 
B)  Packets corresponding to a layer-2 service can be pre-marked on network-ingress. 
C)  Packets corresponding to a layer-3 service can be pre-marked on SAP-ingress. 
D)  Packets corresponding to a layer-3 service can be pre-marked on network-ingress. 
A)  Packets corresponding to a layer-2 service can be pre-marked on SAP-ingress. 
B)  Packets corresponding to a layer-2 service can be pre-marked on network-ingress. 
C)  Packets corresponding to a layer-3 service can be pre-marked on SAP-ingress. 
D)  Packets corresponding to a layer-3 service can be pre-marked on network-ingress.

Question 8

Which of the following is NOT a valid configuration value for a queue's CIR parameter within a SAP-ingress policy?

Accepted Answer

A)  0 
B)  min 
C)  max 
D)  50000 
A)  0 
B)  min 
C)  max 
D)  50000

Question 9

Which of the following statements BEST describes an MBS parameter?

Accepted Answer

A)  It specifies the maximum rate at which a queue can be serviced. 
B)  It specifies the maximum depth of a queue beyond which packets will be dropped. 
C)  It specifies the portion of a queue that is taken from the reserved buffer pool. 
D)  It specifies the threshold beyond which only in-profile packets will be queued. 
E)  It specifies the peak bandwidth that can be attained by the incoming traffic. 
A)  It specifies the maximum rate at which a queue can be serviced. 
B)  It specifies the maximum depth of a queue beyond which packets will be dropped. 
C)  It specifies the portion of a queue that is taken from the reserved buffer pool. 
D)  It specifies the threshold beyond which only in-profile packets will be queued. 
E)  It specifies the peak bandwidth that can be attained by the incoming traffic.

Question 10

Which of the following about the process of queuing self-generated traffic in the Nokia 7750 SR is TRUE?

Accepted Answer

A)  Ingress traffic is stored in IOM queues and egress traffic is stored in CPM queues. 
B)  Ingress traffic is stored in CPM queues and egress traffic is stored in IOM queues. 
C)  It is always stored in CPM queues. 
D)  It is always stored in IOM queues. 
A)  Ingress traffic is stored in IOM queues and egress traffic is stored in CPM queues. 
B)  Ingress traffic is stored in CPM queues and egress traffic is stored in IOM queues. 
C)  It is always stored in CPM queues. 
D)  It is always stored in IOM queues.

Question 11

Which of the following statements describe the operation of WRED on the Nokia 7750 SR? (Choose three)

Accepted Answer

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." 
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."

Question 12

Which of the following egress points does NOT support egress reclassification?

Accepted Answer

A)  Spoke-SDPs bound to an IES 
B)  Spoke-SDPs bound to a VPRN interface 
C)  SAPs 
D)  Network interfaces 
A)  Spoke-SDPs bound to an IES 
B)  Spoke-SDPs bound to a VPRN interface 
C)  SAPs 
D)  Network interfaces

Question 13

Which of the following are examples of metrics for QoS?

Accepted Answer

A)  Signal degradation, attenuation, line loss 
B)  Latency, FIFO, WRED 
C)  Delay, jitter, packet loss 
D)  SNR, queue depth, latency 
E)  Attenuation, dispersion, latency 
A)  Signal degradation, attenuation, line loss 
B)  Latency, FIFO, WRED 
C)  Delay, jitter, packet loss 
D)  SNR, queue depth, latency 
E)  Attenuation, dispersion, latency

Question 14

Which of the following statements about the QoS treatment of self-generated traffic in the Nokia 7750 SR is FALSE?

Accepted Answer

A)  All self-generated traffic is assigned into forwarding class NC by default. 
B)  Ingress self-generated traffic is stored in CPM queues and egress self-generated traffic is stored in IOM queues. 
C)  The self-generated packets will be marked with a default DSCP value. 
D)  The self-generated packets will be marked with default EXP bits. 
A)  All self-generated traffic is assigned into forwarding class NC by default. 
B)  Ingress self-generated traffic is stored in CPM queues and egress self-generated traffic is stored in IOM queues. 
C)  The self-generated packets will be marked with a default DSCP value. 
D)  The self-generated packets will be marked with default EXP bits.

Question 15

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?

Accepted Answer

A)  55 Mbps / 1.1 = 50 Mbps 
B)  55 Mbps 
C)  55 Mbps + 55 Mbps * 0.1 / 1.1 = 60 Mbps 
D)  55 Mbps * 1.1 = 60.5 Mbps 
A)  55 Mbps / 1.1 = 50 Mbps 
B)  55 Mbps 
C)  55 Mbps + 55 Mbps * 0.1 / 1.1 = 60 Mbps 
D)  55 Mbps * 1.1 = 60.5 Mbps

Question 16

Policing improves bandwidth utilization by using buffering to absorb high bursts of traffic.

Accepted Answer

A) True 
 B)False

Question 17

Which of the following statements about CIR of a queue is TRUE?

Accepted Answer

A)  It may exceed PIR of the queue. 
B)  It may be exceeded by the average servicing rate of the queue. 
C)  It varies depending on the traffic characteristics. 
D)  It is the rate at which packets are forwarded out of the queue. 
A)  It may exceed PIR of the queue. 
B)  It may be exceeded by the average servicing rate of the queue. 
C)  It varies depending on the traffic characteristics. 
D)  It is the rate at which packets are forwarded out of the queue.

Question 18

Forwarding sub-classes are configured in the context of which QoS policy type?

Accepted Answer

A)  Network 
B)  Scheduler 
C)  Slope 
D)  SAP-ingress 
E)  Network queue 
A)  Network 
B)  Scheduler 
C)  Slope 
D)  SAP-ingress 
E)  Network queue

Which of the following criteria is an IP multi-field classification option?

In the image shown above, the network QoS policy is applied properly to a Nokia 7750 SR. An MPLS packet with dot1p=1, EXP=4, and DSCP=AF is received. Which forwarding class and profile is assigned to this packet?

A packet is to be encapsulated inside an MPLS tunnel which consists of two MPLS headers at the first network egress. Which of the MPLS EXP fields will be marked?

Which ports on the same MDA share a buffer pool in a Nokia 7750 SR?

Which of the following statements regarding the egress port scheduler is TRUE?

Which of the following statements regarding the default scheduler in the Alcatel-Lucent 7750 SR are TRUE? (Choose two)

Which of the following statements about marking packets is TRUE?

Which of the following is NOT a valid configuration value for a queue's CIR parameter within a SAP-ingress policy?

Which of the following statements BEST describes an MBS parameter?

Which of the following about the process of queuing self-generated traffic in the Nokia 7750 SR is TRUE?

Which of the following statements describe the operation of WRED on the Nokia 7750 SR? (Choose three)

Which of the following egress points does NOT support egress reclassification?

Which of the following are examples of metrics for QoS?

Which of the following statements about the QoS treatment of self-generated traffic in the Nokia 7750 SR is FALSE?

Policing improves bandwidth utilization by using buffering to absorb high bursts of traffic.

Which of the following statements about CIR of a queue is TRUE?

Forwarding sub-classes are configured in the context of which QoS policy type?

Nokia Border Gateway Protocol

Nokia Multiprotocol Label Switching

Nokia Services Architecture

Nokia Virtual Private LAN Services

Nokia Virtual Private Routed Networks

Nokia Quality of Service

Nokia Multicast Protocols

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Exam 1: Nokia Scalable IP Networks

Which of the following criteria is an IP multi-field classification option?

In the image shown above, the network QoS policy is applied properly to a Nokia 7750 SR. An MPLS packet with dot1p=1, EXP=4, and DSCP=AF is received. Which forwarding class and profile is assigned to this packet?

A packet is to be encapsulated inside an MPLS tunnel which consists of two MPLS headers at the first network egress. Which of the MPLS EXP fields will be marked?

Which ports on the same MDA share a buffer pool in a Nokia 7750 SR?

Which of the following statements regarding the egress port scheduler is TRUE?

Which of the following statements regarding the default scheduler in the Alcatel-Lucent 7750 SR are TRUE? (Choose two)

Which of the following statements about marking packets is TRUE?

Which of the following is NOT a valid configuration value for a queue's CIR parameter within a SAP-ingress policy?

Which of the following statements BEST describes an MBS parameter?

Which of the following about the process of queuing self-generated traffic in the Nokia 7750 SR is TRUE?

Which of the following statements describe the operation of WRED on the Nokia 7750 SR? (Choose three)

Which of the following egress points does NOT support egress reclassification?

Which of the following are examples of metrics for QoS?

Which of the following statements about the QoS treatment of self-generated traffic in the Nokia 7750 SR is FALSE?

Policing improves bandwidth utilization by using buffering to absorb high bursts of traffic.

Which of the following statements about CIR of a queue is TRUE?

Forwarding sub-classes are configured in the context of which QoS policy type?

Nokia Border Gateway Protocol

Nokia Multiprotocol Label Switching

Nokia Services Architecture

Nokia Virtual Private LAN Services

Nokia Virtual Private Routed Networks

Nokia Quality of Service

Nokia Multicast Protocols

Filters