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Free 4A0-107 Exam Braindumps
Nokia Quality of Service Questions 56–60 (page: 13)

Updated On: 9-Feb-2026
Page 13 of 48
PDF with 231 Questions

Which of the following statements are TRUE when discussing self-generated traffic QoS? (Choose two)

  1. In order to mark Layer 2 traffic, sgt-qos will set various ToS bits.
  2. DSCP bits can be set per application, per routing instance.
  3. The DSCP marking stays nc1 for all applications. Only the internal FC is manipulated across different applications.
  4. In order to mark Layer 2 self-generated traffic, network interfaces must be set to dot1Q.
  5. The internal forwarding class for self-generated traffic is set once and applied to the base router and all VPRN instances.

Answer(s): B,D



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?

  1. The EXP field in the bottom MPLS header will be marked.
  2. The EXP field in both the top and bottom MPLS headers will be marked.
  3. For Layer 2 services, the top MPLS header will be marked; for Layer 3 services, the bottom MPLS header will be marked.
  4. The EXP field in the top MPLS header will be marked.
  5. Neither the top nor the bottom EXP field will be marked since EXP remarking can only be done on the network ingress.

Answer(s): B



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

  1. It is important that all packets are classified in the same way at all SAP-ingress points.
  2. Once a packet is classified to a forwarding class, it cannot change across the network.
  3. Packet enters a node will be treated as per the local hop's configured policy.
  4. Native IP packets entering a network port will be marked at the first network egress by default
  5. Native IP packets entering a network port will not be marked at the first network egress by default.
  6. Native IP packets entering a network port will be marked at the first network egress, regardless of the re-marking configuration.

Answer(s): C,E



Click the exhibit button below. Traffic arriving at router PE 1 is marked with a dot1p value of 4. Given the network policies applied on the routers in the diagram below, what is the EXP value of packets arriving at router PE 2?



Note: Only relevant portions of the network policy are shown.

  1. 2
  2. 3
  3. 5
  4. 6
  5. None of the above.

Answer(s): A



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)

  1. Native IP Packets will not be remarked.
  2. Native IP Packets will be remarked.
  3. Packets associated with a VPRN service on an upstream node will not be remarked.
  4. Packets associated with an ES service on an upstream node will be remarked.

Answer(s): B,D



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