Question 1

To implement Hierarchical-QoS (Multi-tiered scheduling), which of the following actions must be undertaken? (Choose three)

Accepted Answer

A)  H-QoS capabilities must be enabled globally on the router 
B)  A scheduler-policy must be configured. 
C)  The queues in the SAP-ingress and SAP-egress policies do not require additional configuration attributes to make use of the hierarchical schedulers. 
D)  The network queue policy must be configured to make use of the scheduler-policy. 
E)  The scheduler-policy must be referenced in the SAP-ingress and SAP-egress policies.
F) The scheduler-policy must be applied on the service SAP. 
A)  H-QoS capabilities must be enabled globally on the router 
B)  A scheduler-policy must be configured. 
C)  The queues in the SAP-ingress and SAP-egress policies do not require additional configuration attributes to make use of the hierarchical schedulers. 
D)  The network queue policy must be configured to make use of the scheduler-policy. 
E)  The scheduler-policy must be referenced in the SAP-ingress and SAP-egress policies.
F) The scheduler-policy must be applied on the service SAP.

Question 2

Which of the following QoS functions does the slope-policy perform?

Accepted Answer

A)  Classification 
B)  Marking 
C)  Queuing 
D)  Congestion management 
E)  Scheduling 
A)  Classification 
B)  Marking 
C)  Queuing 
D)  Congestion management 
E)  Scheduling

Question 3

Which of the following is NOT an advantage of deploying queue-groups on a network port?

Accepted Answer

A)  It enables fine-tuned SLA control that is not possible when using a common set of queues for all L2/L3 services. 
B)  It enables CFHP and hierarchy scheduling (egress) for each network interface. 
C)  It improves scalability by allowing the use of queues instead of the default set of policers used on network egress. 
D)  It allows for enforcing bandwidth reservations of the LSPs that are used by the SDPs configured on the network interfaces. 
A)  It enables fine-tuned SLA control that is not possible when using a common set of queues for all L2/L3 services. 
B)  It enables CFHP and hierarchy scheduling (egress) for each network interface. 
C)  It improves scalability by allowing the use of queues instead of the default set of policers used on network egress. 
D)  It allows for enforcing bandwidth reservations of the LSPs that are used by the SDPs configured on the network interfaces.

Question 4

Which of the following are possible criteria for classifying packets at the network port ingress on the Alcatel-Lucent 7750 SR? (Choose three)

Accepted Answer

A)  The EXP bits in the MPLS header. 
B)  The packet's source and destination IP addresses. 
C)  The packet's DSCP bits. 
D)  The dot1p bits in the frame header. 
E)  The ID of an SDP that is transporting the packet. 
A)  The EXP bits in the MPLS header. 
B)  The packet's source and destination IP addresses. 
C)  The packet's DSCP bits. 
D)  The dot1p bits in the frame header. 
E)  The ID of an SDP that is transporting the packet.

Question 5

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

Accepted Answer

A)  When a packet arrives, the PIR bucket depth is checked and the packet is discarded if this bucket is full. 
B)  The CIR bucket of a policer is the reserved portion of its PIR bucket. 
C)  The CIR bucket of a policer has two thresholds: CBS and HPO. 
D)  Packets processed by the PIR bucket at an average rate above PIR will be forwarded as out-of-profile. 
A)  When a packet arrives, the PIR bucket depth is checked and the packet is discarded if this bucket is full. 
B)  The CIR bucket of a policer is the reserved portion of its PIR bucket. 
C)  The CIR bucket of a policer has two thresholds: CBS and HPO. 
D)  Packets processed by the PIR bucket at an average rate above PIR will be forwarded as out-of-profile.

Question 6

Which of the following statements about configuring queues to use shared or reserved buffer space is FALSE?

Accepted Answer

A)  When queues use shared buffer space, buffers are more efficiently utilized. 
B)  Queues that use reserved buffer space will have memory available for their reserved portion. 
C)  When a queue is not using its reserved portion, other queues can use it. 
D)  Using reserved buffer space prevents a queue from being starved of buffer resources by other queues. 
A)  When queues use shared buffer space, buffers are more efficiently utilized. 
B)  Queues that use reserved buffer space will have memory available for their reserved portion. 
C)  When a queue is not using its reserved portion, other queues can use it. 
D)  Using reserved buffer space prevents a queue from being starved of buffer resources by other queues.

Question 7

In a Nokia 7750 SR, which of the following QoS policies CANNOT include packet classification criteria?

Accepted Answer

A)  SAP-ingress 
B)  SAP-egress 
C)  Network-queue 
D)  Network 
A)  SAP-ingress 
B)  SAP-egress 
C)  Network-queue 
D)  Network

Question 8

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

Accepted Answer

A)  Closest 
B)  Average 
C)  Min 
D)  Max 
A)  Closest 
B)  Average 
C)  Min 
D)  Max

Question 9

A profile-mode queue is configured with MBS = 100 KB, CBS = 50 KB and High-Priority-Only = 40%. Assume there is no CBS overbooking, and the slope-policy is disabled. If the current queue depth is 70 KB, what will happen to an out-of-profile packet when it is transmitted to the queue?

Accepted Answer

A)  It will be stored in the reserved buffer space and remain out-of-profile. 
B)  It will be stored in the reserved buffer space and become in-profile. 
C)  It will contend for shared buffer space with packets from other queues. 
D)  It will be discarded because the high-priority-only threshold has been reached. 
A)  It will be stored in the reserved buffer space and remain out-of-profile. 
B)  It will be stored in the reserved buffer space and become in-profile. 
C)  It will contend for shared buffer space with packets from other queues. 
D)  It will be discarded because the high-priority-only threshold has been reached.

Question 10

WRED can be used to help avoid TCP slow-start synch problems.

Accepted Answer

A) True 
 B)False

Question 11

Real-time rate limiting on the service ingress is a feature that performs_____________. Traffic above the defined PIR is ______________.

Accepted Answer

A)  Policing, expedited 
B)  Metering, marked discard eligible 
C)  Marking, marked discard eligible 
D)  Policing, discarded 
E)  Shaping, discarded 
A)  Policing, expedited 
B)  Metering, marked discard eligible 
C)  Marking, marked discard eligible 
D)  Policing, discarded 
E)  Shaping, discarded

Question 12

Which of the following statements BEST defines policing?

Accepted Answer

A)  The process of delaying packets within a traffic stream to have them conform to a defined traffic profile. 
B)  The overall treatment of a defined subset of a customer's traffic within a DiffServ domain. 
C)  The process of discarding packets within a traffic stream in accordance with the state of a meter to enforce a defined traffic profile. 
D)  The action of setting the DiffServ codepoint of a packet prior to its entry into a downstream DiffServ domain. 
E)  A specified algorithm or operation that is implemented in a node in order to realize one or more per-hop behaviors. 
A)  The process of delaying packets within a traffic stream to have them conform to a defined traffic profile. 
B)  The overall treatment of a defined subset of a customer's traffic within a DiffServ domain. 
C)  The process of discarding packets within a traffic stream in accordance with the state of a meter to enforce a defined traffic profile. 
D)  The action of setting the DiffServ codepoint of a packet prior to its entry into a downstream DiffServ domain. 
E)  A specified algorithm or operation that is implemented in a node in order to realize one or more per-hop behaviors.

Question 13

Which of the following statements about a SAP-ingress policy is FALSE?

Accepted Answer

A)  It maps customer traffic to forwarding classes on ingress. 
B)  It can use customer QoS markings to do the mapping. 
C)  The default SAP-ingress policy classifies all traffic into FC "be" with low priority. 
D)  It serves the classification, queuing, and marking functions of QoS but does not serve scheduling 
A)  It maps customer traffic to forwarding classes on ingress. 
B)  It can use customer QoS markings to do the mapping. 
C)  The default SAP-ingress policy classifies all traffic into FC "be" with low priority. 
D)  It serves the classification, queuing, and marking functions of QoS but does not serve scheduling

Question 14

Packets enter the network via the ePipe SAP on PE1 with dot1p marking of 6. The VC type of the SDP interconnecting PE1 and PE2 is vlan. All network interfaces use the default network QoS policy. According to the configuration shown above, what is the inner dot1p value of the BE traffic egressing router PE2?

Accepted Answer

A)  0 
B)  3 
C)  6 
D)  22 
A)  0 
B)  3 
C)  6 
D)  22

Question 15

What is an SLA? (Choose two)

Accepted Answer

A)  An SLA is used to provide automated, real-time testing and alarming for throughput, latency, and jitter across a provider's network. 
B)  An SLA is an agreement between a customer and a provider that dictates the treatment of customer traffic across the provider's network. 
C)  An SLA allows customers to control all traffic within the service provider's network by prioritizing their traffic over others as desired. 
D)  An SLA allows a customer to pre-mark traffic and ensure that traffic is treated as per the agreement within the provider's network. 
E)  An SLA is a standard set of network QoS policies that a provider shares to all its customers, allowing them to better understand the treatment of traffic within the provider's network. 
A)  An SLA is used to provide automated, real-time testing and alarming for throughput, latency, and jitter across a provider's network. 
B)  An SLA is an agreement between a customer and a provider that dictates the treatment of customer traffic across the provider's network. 
C)  An SLA allows customers to control all traffic within the service provider's network by prioritizing their traffic over others as desired. 
D)  An SLA allows a customer to pre-mark traffic and ensure that traffic is treated as per the agreement within the provider's network. 
E)  An SLA is a standard set of network QoS policies that a provider shares to all its customers, allowing them to better understand the treatment of traffic within the provider's network.

Question 16

At which points can traffic be marked or remarked on the Nokia 7750? (Choose two)

Accepted Answer

A)  SAP-ingress only 
B)  SAP-egress only 
C)  SAP-ingress and SAP-egress 
D)  Network ingress 
E)  Network egress 
A)  SAP-ingress only 
B)  SAP-egress only 
C)  SAP-ingress and SAP-egress 
D)  Network ingress 
E)  Network egress

Question 17

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

Accepted Answer

A)  It will be discarded because the high-priority-only threshold is exceeded. 
B)  It will be queued but re-marked as "out-of-profile." 
C)  It will be queued in the reserved portion of the buffer pool and remain "in-profile." 
D)  It will be queued in the shared portion of the buffer pool but contend for shared buffer space with packets from other queues. 
E)  It will be queued in the shared portion of the buffer pool but may be dropped if the buffer utilization exceeds the start-average value of the low slope. 
A)  It will be discarded because the high-priority-only threshold is exceeded. 
B)  It will be queued but re-marked as "out-of-profile." 
C)  It will be queued in the reserved portion of the buffer pool and remain "in-profile." 
D)  It will be queued in the shared portion of the buffer pool but contend for shared buffer space with packets from other queues. 
E)  It will be queued in the shared portion of the buffer pool but may be dropped if the buffer utilization exceeds the start-average value of the low slope.

Question 18

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

Accepted Answer

A)  IS-IS 
B)  RSVP 
C)  ICMP 
D)  BGP 
A)  IS-IS 
B)  RSVP 
C)  ICMP 
D)  BGP

Question 19

Which of the following statements is considered best practice when changing a network policy that has been associated with an interface?

Accepted Answer

A) The policy should be placed in a "shutdown" state before changes are made. B) A new network policy should be created and applied to the interface, overwriting the previous policy. C) The policy must first be removed from the interface, then modified and re-applied to the interface. D) Before the policy can be changed, it must be deleted with the no network qos command. E) Before any changes are made to the policy, all network interfaces where the policy is applied have to be shut down. A) The policy should be placed in a "shutdown" state before changes are made. B) A new network policy should be created and applied to the interface, overwriting the previous policy. C) The policy must first be removed from the interface, then modified and re-applied to the interface. D) Before the policy can be changed, it must be deleted with the no network qos command. E) Before any changes are made to the policy, all network interfaces where the policy is applied have to be shut down.

Question 20

Forwarding subclasses are only relevant to, and are therefore applied within the context of, a _____________policy.

Accepted Answer

A)  network 
B)  scheduling 
C)  slope 
D)  SAP-ingress 
E)  network-queue 
A)  network 
B)  scheduling 
C)  slope 
D)  SAP-ingress 
E)  network-queue

To implement Hierarchical-QoS (Multi-tiered scheduling), which of the following actions must be undertaken? (Choose three)

Which of the following QoS functions does the slope-policy perform?

Which of the following is NOT an advantage of deploying queue-groups on a network port?

Which of the following are possible criteria for classifying packets at the network port ingress on the Alcatel-Lucent 7750 SR? (Choose three)

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

Which of the following statements about configuring queues to use shared or reserved buffer space is FALSE?

In a Nokia 7750 SR, which of the following QoS policies CANNOT include packet classification criteria?

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

A profile-mode queue is configured with MBS = 100 KB, CBS = 50 KB and High-Priority-Only = 40%. Assume there is no CBS overbooking, and the slope-policy is disabled. If the current queue depth is 70 KB, what will happen to an out-of-profile packet when it is transmitted to the queue?

WRED can be used to help avoid TCP slow-start synch problems.

Real-time rate limiting on the service ingress is a feature that performs_. Traffic above the defined PIR is __.

Which of the following statements BEST defines policing?

Which of the following statements about a SAP-ingress policy is FALSE?

What is an SLA? (Choose two)

At which points can traffic be marked or remarked on the Nokia 7750? (Choose two)

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

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

Which of the following statements is considered best practice when changing a network policy that has been associated with an interface?

Forwarding subclasses are only relevant to, and are therefore applied within the context of, a _____________policy.

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

Exam 1: Nokia Scalable IP Networks

To implement Hierarchical-QoS (Multi-tiered scheduling), which of the following actions must be undertaken? (Choose three)

Which of the following QoS functions does the slope-policy perform?

Which of the following is NOT an advantage of deploying queue-groups on a network port?

Which of the following are possible criteria for classifying packets at the network port ingress on the Alcatel-Lucent 7750 SR? (Choose three)

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

Which of the following statements about configuring queues to use shared or reserved buffer space is FALSE?

In a Nokia 7750 SR, which of the following QoS policies CANNOT include packet classification criteria?

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

A profile-mode queue is configured with MBS = 100 KB, CBS = 50 KB and High-Priority-Only = 40%. Assume there is no CBS overbooking, and the slope-policy is disabled. If the current queue depth is 70 KB, what will happen to an out-of-profile packet when it is transmitted to the queue?

WRED can be used to help avoid TCP slow-start synch problems.

Real-time rate limiting on the service ingress is a feature that performs_____________. Traffic above the defined PIR is ______________.

Which of the following statements BEST defines policing?

Which of the following statements about a SAP-ingress policy is FALSE?

What is an SLA? (Choose two)

At which points can traffic be marked or remarked on the Nokia 7750? (Choose two)

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

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

Which of the following statements is considered best practice when changing a network policy that has been associated with an interface?

Forwarding subclasses are only relevant to, and are therefore applied within the context of, a _____________policy.

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

Real-time rate limiting on the service ingress is a feature that performs_. Traffic above the defined PIR is __.