Download Nokia Scalable IP Networks.4A0-100.ExamTopics.2026-10-21.66q.vcex

Vendor: Nokia
Exam Code: 4A0-100
Exam Name: Nokia Scalable IP Networks
Date: Oct 21, 2026
File Size: 2 MB
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Demo Questions

Question 1
Which of the following statements about VPWS service on a Nokia 7750 SR is FALSE?
  1. VPWS is a simple point-to-point service.
  2. VPWS emulates a Layer 2 connection between two customers.
  3. VPWS does not perform MAC learning.
  4. VPWS encapsulates Layer 2 frames into IP datagrams.
Correct answer: D
Question 2
The TCP/IP and OSI models of protocol are similar in that they both have:
  1. An application and session layer.
  2. A network layer that provides a universal and consistent forwarding service.
  3. A transport layer with two protocols.
  4. An applications services layer with similar layering and service definitions.
Correct answer: C
Question 3
Which statement best describes how the internet evolved?
  1. The internet emerged in the commercial world in the 1980's following the US military's adoption of TCP/IP in 1983.
  2. The internet evolved from a military to a research to a commercial based network.
  3. The internet remained primarily a research based network and was only commercially adopted in 2000 when the world wide web was conceived.
  4. Internet service providers provided the services necessary for military based networks to evolve into research and education based networks.
Correct answer: B
Question 4
Which of the following is an important advantage of protocol layering? (Choose two)
  1. Controls distribution of IP addresses.
  2. Simplifies protocol functionality.
  3. Isolates changes in lower layers from upper layers.
  4. Increases protocol operational efficiencies.
  5. Layering adds to the fragmentation of the data
Correct answer: C, D
Question 5
A network with address 208.40.224.0/24 is divided into /28 subnets. What is the host address range of the fourth subnetwork?
  1. 208.40.224.17 "" 208.40.224.30
  2. 208.40.224.33 "" 208.40.224.46
  3. 208.40.224.49 "" 208.40.224.62
  4. 208.40.224.65 "" 208.40.224.78
Correct answer: C
Question 6
What is the most specific aggregate prefix for the following 4 subnets?
100.1.1.4/30
100.1.1.8/30
100.1.1.12/30
100.1.1.16/30
  1. 100.1.1.0/25
  2. 100.1.1.0/26
  3. 100.1.1.0/27
  4. 100.1.1.0/28
Correct answer: C
Question 7
A network administrator is creating a subnet plan for the address 172.16.0.0/16. The network must support 459 hosts on each subnet while providing the maximum number of subnets. What subnet mask should be used?
  1. 255.255.0.0
  2. 255.255.128.0
  3. 255.255.224.0
  4. 255.255.254.0
Correct answer: D
Question 8
Network address: 200.12.30.0 -
Network mask: 255.255.255.0 -
Use the information above. You need to create 12 subnetworks supporting 10 host addresses each.
Which extended prefix will meet this requirement?
  1. /12
  2. /24
  3. /26
  4. /28
  5. /30
Correct answer: D
Question 9
Which of the following type of addressing scheme delivers information from one source to all devices who are members of a specific group?
  1. Anycast.
  2. Multicast.
  3. Broadcast.
  4. Unicast.
Correct answer: B
Question 10
Using Q-in-Q Virtual Local Area Network (VLAN) stacking, how does a carrier differentiate one customers traffic from that of another?
  1. The provider edge (PE) switch adds an additional field called a PE tag to the customers Layer 2 data.
  2. The PE switch replaces the customers VLAN tag with a carrier-assigned tag.
  3. The PE switch adds a second VLAN tag to identify the customers traffic on the carriers network.
  4. The PE switch assigns a customer-specific priority label to the customers traffic.
Correct answer: C
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