[Sep 11, 2025] 4A0-100 Test Prep Training Practice Exam Questions Practice Tests [Q79-Q97]

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[Sep 11, 2025] 4A0-100 Test Prep Training Practice Exam Questions Practice Tests

Exam Questions Answers Braindumps 4A0-100 Exam Dumps PDF Questions

NEW QUESTION # 79
What next-hop should be used on CR1 to configure a default route to router R1?

  • A. 10.2.3.1
  • B. 10.2.3.2
  • C. 10.1.1.1
  • D. 192.168.2.0

Answer: B


NEW QUESTION # 80
Which of the following best describes a hub?

  • A. A device that receives and forwards data based on the Layer 3 destination address.
  • B. A device that receives and replicates data without Layer 2 header inspection.
  • C. A device that receives and forwards data based on the MAC destination address.
  • D. A device used to connect cables with signal amplification.

Answer: B

Explanation:
Section: Volume B


NEW QUESTION # 81
Multiple SAPs may be defined on the same physical port and may be used for different services.

  • A. True
  • B. False

Answer: A

Explanation:
Section: Volume B


NEW QUESTION # 82

Based on the network diagram (click the Exhibit Button), what are the prefix, mask, and next-hop used on CR1 to setup a default static route to R1?

  • A. 10.2.3.2/32 next-hop 0.0.0.0/0
  • B. 0.0.0.0/0 next-hop 192.168.2.0
  • C. 0.0.0.0/32 next-hop 10.2.3.2
  • D. 0.0.0.0/0 next-hop 10.2 3.2

Answer: D


NEW QUESTION # 83
What distance is supported using CAT-5 cabling for 10/100/1000 TX?

  • A. 100 m.
  • B. 500 m.
  • C. 10 Km.
  • D. 1 Km.

Answer: A


NEW QUESTION # 84
Which of the following is used for the auto completion of CLI commands in a Nokia 7750 SR?

  • A. Type the first few letters of the command, then type ?.
  • B. Type the first few letters of the command, then press Tab.
  • C. Type the first few letters of the command, then press Esc.
  • D. Type the first few letters of the command, then press Ctrl C.

Answer: B


NEW QUESTION # 85
Network 201.148.104.0/21 is subnetted using a /23 mask. How many subnets and host addresses per subnet will be obtained with this mask?

  • A. 4 subnets, 510 hosts
  • B. 4 subnets, 512 hosts
  • C. 2 subnets, 2048 hosts
  • D. 2 subnets, 1022 hosts

Answer: D

Explanation:
Section: Volume B


NEW QUESTION # 86
What is the basic unit of framing in SDH and the bit rate for transmission?

  • A. STM-1 with a bit rate of 51.84 Mbit/s.
  • B. STM-1 with a bit rate of 1.544 Mbit/s.
  • C. STM-1 with a bit rate of 155.52 Mbit/s.
  • D. STM-1 with a bit rate of 2.048 Mbit/s.

Answer: C


NEW QUESTION # 87
Based on the network diagram (click on the exhibit), what is the command to use on R1 to setup a static
route to the network on CR1

  • A. config router static-route 192.168.2.0/24 next-hop 10.2.3.2
  • B. config router static-route 10.2.3.2 next-hop 192.168.2.0
  • C. config router static-route 192.168.2.0/24 next-hop 10.2.3.1
  • D. config router static-route 10.2.3.1 next-hop 192.168.2.0

Answer: C


NEW QUESTION # 88
Which transport protocol and port number is used by BGP to establish and maintain a peering session with
other BGP speakers?

  • A. UDP port 22.
  • B. TCP port 22.
  • C. TCP port 179.
  • D. UDP port 179.

Answer: C


NEW QUESTION # 89
Given the associated prefix value, which of the following is a valid host address?

  • A. 172.16.224.255/18
  • B. 255.255.255.255/32
  • C. 224.1.2.1/8
  • D. 192.168.24.59/30

Answer: A


NEW QUESTION # 90
What is the preference value in the routing table used for?

  • A. It differentiates between multiple routes to a destination learned by different routing protocols.
  • B. It indicates the preferred egress interface.
  • C. It differentiates between multiple routes to a destination learned by the same protocol.
  • D. It is used to differentiate local routes from remote routes.

Answer: A


NEW QUESTION # 91
Which of the following statements about a physical router interface is FALSE?

  • A. It is associated with a port.
  • B. It is used to connect to other routers or to customer hosts.
  • C. It can be of type system or loopback.
  • D. It can be associated with an IP address and with a prefix length.

Answer: C

Explanation:
In Nokia SR OS:
* Aphysical interfacerefers to a physical port on the router (e.g., port 1/1/1).
* It can be configured withIP addresses, associated with services (e.g., IES, VPRN), and connects to other routers or customer devices.
* Systemandloopbackinterfaces arelogical interfaces, not physical.
* Option D is FALSE, because a physical interfacecannotbe of type "system" or "loopback" - those are virtual/logicalinterfaces in the Nokia router architecture.
Reference:
Nokia SRA Study Guide - Chapter: "Interfaces and Ports"
Nokia SR OS Interface Configuration Guide


NEW QUESTION # 92
Which statement best describes how the internet evolved?

  • A. The internet remained primarily a research based network and was only commercially adopted in 2000 when the world wide web was conceived.
  • B. The internet evolved from a military to a research to a commercial based network.
  • C. The internet emerged in the commercial world in the 1980s following the US militarys adoption of TCP/IP in 1983.
  • D. Internet service providers provided the services necessary for military based networks to evolve into research and education based networks.

Answer: B


NEW QUESTION # 93
A typical Alcatel-Lucent 7750 SR Media Dependent Adapter (MDA) interfaces with:

  • A. The Central Processing Unit (CPU).
  • B. The Control Plane.
  • C. A Small Form-Factor Pluggable (SFP) module.
  • D. The Switch Fabric.

Answer: C

Explanation:
Section: Volume A


NEW QUESTION # 94
Which of the following egress interfaces is used to forward a packet with destination IP address 140.10.0.110?

  • A. Interface "toP2"
  • B. System interface
  • C. Interface "toP1"
  • D. Interface "toC1"

Answer: C

Explanation:
Section: Volume B


NEW QUESTION # 95
What is NOT a function of the IOM?

  • A. It performs Quality of Service operations and buffers incoming data.
  • B. It forwards the data to the switch fabric.
  • C. It discards excess data packets.
  • D. It converts the incoming data to an internal format.

Answer: D


NEW QUESTION # 96
Based on the network diagram (click the Exhibit Button).

R2 wants to connect a host on 192.168.2.0/24 behind CR1. What is the correct next-hop to use, assuming R1 is configured correctly?

  • A. 10.1.1.1
  • B. 10.2.3.1
  • C. 10.1.1.2
  • D. 10.2.3.2

Answer: A


NEW QUESTION # 97
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