Alcatel Lucent 4A0-107 Nokia Quality of Service Online Training
Alcatel Lucent 4A0-107 Online Training
The questions for 4A0-107 were last updated at Feb 19,2025.
- Exam Code: 4A0-107
- Exam Name: Nokia Quality of Service
- Certification Provider: Alcatel Lucent
- Latest update: Feb 19,2025
At which points can traffic be marked or remarked on the Nokia 7750? (Choose two)
- A . SAP-ingress only
- B . SAP-egress only
- C . SAP-ingress and SAP-egress
- D . Network ingress
- E . Network egress
Which of the following statements regarding egress FC and profile over-ride are TRUE? (Choose two)
- A . Packets can be classified into 16 different FCs when using priority mode queuing.
- B . This feature is available on egress SAPs within any service.
- C . MPLS EXP bits can be changed based on multi-field classification.
- D . If a Behavior Aggregate (BA) and Multi-field (MF) match occurs, only the MF override parameters will take effect.
- E . If a Behavior Aggregate (BA) and Multi-field (MF) match occurs, the BA classification can override the forwarding class while the MF classification can override the profile.
Which of the following are trusted boundaries, by default? (Choose two)
- A . An IES SAP
- B . A VPLS SAP
- C . A network port
- D . AVPRN SAP
- E . An access port
A service provider is using GRE for his transport tunnel on the Nokia 7750 SR.
How can traffic be marked as it traverses the service provider’s network? (Choose two)
- A . Using dot1p bits of the 802.1q Ethernet frame header
- B . Using DSCP bits within the ToS field of the IP packet header.
- C . Using the IP precedence bits within the ToS field of the IP packet header.
- D . Using the CLP bit of the ATM cell header.
- E . Using the EXP bits of the MPLS transport label header.
In which of the following scenarios is self-generated traffic QoS (sgt-QoS) useful?
- 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.
Which of the following statements are TRUE when discussing self-generated traffic QoS? (Choose two)
- A . In order to mark Layer 2 traffic, sgt-qos will set various ToS bits.
- B . DSCP bits can be set per application, per routing instance.
- C . The DSCP marking stays nc1 for all applications. Only the internal FC is manipulated across different applications.
- D . In order to mark Layer 2 self-generated traffic, network interfaces must be set to dot1Q.
- E . The internal forwarding class for self-generated traffic is set once and applied to the base router and all VPRN instances.
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?
- 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.
Which of the following statements are TRUE regarding the building of a QoS-enabled network? (Choose two)
- 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.
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.
- A . 2
- B . 3
- C . 5
- D . 6
- E . None of the above.
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)
- 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.
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