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Questions # 1:

Which of the following statements BEST defines policing?

Options:

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.

Questions # 2:

How many tiers of schedulers can be supported in hierarchical scheduling on the Nokia 7750 SR?

Options:

A.

8

B.

3

C.

5

D.

6

Questions # 3:

On the Nokia 7750 SR, what is the maximum number of queues that a single SAP-ingress policy can support in a VPLS?

Options:

A.

16

B.

8

C.

32

D.

48

E.

56

Questions # 4:

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

Options:

A.

It sets both the forwarding class and the packet’s dot1p, lsp-exp, precedence, or dscp field to the same value.

B.

It groups all packets together into a single aggregate stream, and gives all packets the same treatment.

C.

It copies the three most significant bits in the packet’s dscp field into the forwarding class.

D.

It assigns a forwarding class based on the packet’s dot1p, lsp-exp, precedence, or dscp value.

Questions # 5:

Which of the following statements are TRUE regarding the remarking of packets arriving on the network interface whose ToS-marking-state is set to trusted and remarking enabled on network egress? (Choose two)

Options:

A.

Native IP Packets will not be remarked.

B.

Native IP Packets will be remarked.

C.

Packets associated with a VPRN service on an upstream node will not be remarked.

D.

Packets associated with an ES service on an upstream node will be remarked.

Questions # 6:

Which of the following statements about burst-limit of a queue is FALSE?

Options:

A.

Burst-limit sets a limit on the maximum burst of packets transmitted during each scheduler visitation time.

B.

Proper configuration of the burst-limit can prevent packet drops on the downstream nodes resulting from traffic bursts.

C.

The lower the configured burst limit value, the lower the burst allowed to enter the queue.

D.

If the burst-limit is not configured, a default burst-limit value will be used by the queue.

Questions # 7:

At which point are internal QoS markings added to the packets?

Options:

A.

SAP-ingress

B.

FFPC

C.

SAP-egress

D.

network-egress

Questions # 8:

In which of the following scenarios is self-generated traffic QoS (sgt-QoS) useful?

Options:

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.

Questions # 9:

Click the exhibit button below.

Question # 9

At router PE1, customer packets are arriving tagged with a dotlp value of 6 and marked with a DSCP value of EF.

Based on the configuration shown below for a VPLS service, what will be the DSCP and EXP marking for the packet egressing the network port on this PE router? (Choose two)

Options:

A.

The DSCP value will be set to af21.

B.

The DSCP value will be set to af23.

C.

The DSCP value will remain as ef.

D.

The EXP value, in the MPLS headers, will be set to 4.

E.

The EXP value, in the MPLS headers, will be set to 3.

Questions # 10:

Which of the following statements are TRUE regarding the building of a QoS-enabled network? (Choose two)

Options:

A.

It is important that all packets are classified in the same way at all SAP-ingress points.

B.

Once a packet is classified to a forwarding class, it cannot change across the network.

C.

Packet enters a node will be treated as per the local hop's configured policy.

D.

Native IP packets entering a network port will be marked at the first network egress by default

E.

Native IP packets entering a network port will not be marked at the first network egress by default.

F.

Native IP packets entering a network port will be marked at the first network egress, regardless of the re-marking configuration.

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