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Nokia Data Center Fabric Fundamentals 4A0-D01 Dumps in PDF

Free Nokia 4A0-D01 Real Questions (page: 6)

4A0-D01 PDF — 61 Questions

Which of the following statements about SR Linux interfaces is FALSE?

  1. Only one management interface is allowed.
  2. Network interfaces are associated with physical ports on the linecards.
  3. The loopback interface is a physical interface directly connected to another interface on the same chassis.
  4. Layer 2 parameters such as MTU are configured at the SR Linux interface level while Layer 3 parameters are configured at the subinterface level.

Answer(s): C

Explanation:

The loopback interface in SR Linux is a logical, virtual interface used for management and routing purposes; it is not a physical interface directly connected to another interface on the same chassis.



Which of the following statements about the IRB subinterface configuration in Nokia SR Linux is FALSE?

  1. An IP address is configured under the IRB's subinterface.
  2. An IRB subinterface is configured in an IP-VRF network instance.
  3. One IRB subinterface is configured for each interface within a MAC-VRF network instance.
  4. One IRB subinterface is configured in a MAC-VRF network instance.

Answer(s): C

Explanation:

In Nokia SR Linux, IRB subinterfaces are configured one per MAC-VRF network instance, not one for each interface within that instance. Multiple IRB subinterfaces per interface are not typical.



Which of the following statements about IP-VRFs in Nokia's SR Linux is FALSE?

  1. An IP-VRF is a Layer 3 network instance.
  2. Packets in an IP-VRF are forwarded based on the destination IP address.
  3. The router maintains a distinct route table for each IP-VRF instance.
  4. Multiple servers can be connected to the same subnet in an IP-VRF.

Answer(s): D

Explanation:

Multiple servers connected to the same subnet typically reside within the same Layer 2 domain or MAC-VR
F. IP-VRFs operate at Layer 3 and segment routing and forwarding by separate routing tables, so multiple servers on the same subnet are not a function of IP-VRF.



Which of the following statements about the MAC table shown in the exhibit output is FALSE?

  1. The MAC address 00:25: BA:00:00:10 is learnt on more than one interface.
  2. The MAC re-learning rate has exceeded the threshold within the specified time frame.
  3. [interface ethernet-1/10 is configured with the MAC address 00:25:BA:00:00:10.
  4. Mac-duplication detection is enabled in mac-vrf-1.

Answer(s): A

Explanation:

The MAC address 00:25:BA:00:00:10 is listed as "duplicate," but it appears only once associated with interface ethernet-1/10. Therefore, it is not learned on more than one interface.



Which of the following statements about a MAC-VRF is FALSE?

  1. A MAC-VRF is a Layer 2 network instance.
  2. Bridge table entries contain an exit interface for each destination address.
  3. Packets received in a MAC-VRF are forwarded based on destination IP address.
  4. Multiple devices can be connected to the same IP subnet using a MAC-VRF.

Answer(s): C

Explanation:

In a MAC-VRF, packets are forwarded based on Layer 2 information such as destination MAC addresses, not on destination IP addresses.



Which of the following statements about resilient ECMP load balancing is TRUE?

  1. The hash value used to distribute traffic is calculated as a modulo function on specific fields of the packet header.
  2. Hash buckets are used to ensure that flows egressing the same interface on one router use different egress interfaces on downstream routers.
  3. A different hash seed is used on downstream routers to ensure that flows are randomly distributed across all eligible router interfaces.
  4. When one of the next-hops fail, only flows currently egressing to that next-hop are impacted.

Answer(s): D

Explanation:

In resilient ECMP load balancing, when a next-hop fails, only the flows that were using that specific next-hop are affected and need to be redistributed, minimizing disruption to other flows.



Examine the exhibit.
Which of the following statements is TRUE?

  1. A recursive lookup is performed to resolve 10.2.1.0 to use 10.1.1.0.
  2. A recursive lookup is performed to resolve 10.1.1.0 to use 10.2.1.0.
  3. The next-hop group for this static route is configured with two next-hops.
  4. The next-hop selected for this route will be based on the preference value configured for each next-hop.

Answer(s): C

Explanation:

The static route shows two next-hop IP addresses (10.1.1.0 and 10.2.1.0) listed, indicating that a next-hop group with multiple next-hops is configured for load balancing or redundancy.



A static route is configured in two steps in Nokia's SR Linux.
Which of the following items CANNOT be configured in the static-routes container?

  1. blackhole
  2. IPv4 destination prefix
  3. Preference value
  4. Next-hop group

Answer(s): A

Explanation:

The static-routes container in Nokia SR Linux does not support configuring a blackhole route directly; it is used to configure destination prefixes, preference values, and next-hop groups for static routing.



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Share your comments for Nokia 4A0-D01 exam with other users:

V
vel
8/28/2023 9:17:09 AM

good one with explanation

Anonymous
G
Gurdeep
1/18/2024 4:00:15 PM

This is one of the most useful study guides I have ever used.

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