Nokia 4A0-100 Exam - Topic 2 Question 123 Discussion

Actual exam question for Nokia's 4A0-100 exam

Question #: 123
Topic #: 2

[All 4A0-100 Questions]

What is the purpose of a broadcast IP address?

ATo provide an address that refers to all the IP devices in a subnetwork.

BTo provide an address that refers to a specific group of devices in a network.

CTo provide an address that refers to a group of devices with the same IP address in different layer-2 domains.

DTo provide an address that refers to a single device on a given subnetwork.

Show Suggested Answer

Suggested Answer: A

A broadcast IP address is used to send a message to all devices on a specific IP subnet. This address is the highest address in the subnet (i.e., all host bits set to 1).

Example: In 192.168.1.0/24 broadcast is 192.168.1.255.

It is used for purposes like ARP requests or DHCP discovery.

Option A is correct -- refers to all hosts in a subnet.

Option B refers to multicast, not broadcast.

Option C might refer to anycast, which is different.

Option D describes a unicast address.

Nokia IP Fundamentals Study Guide -- Chapter: 'IP Addressing and Broadcast Communication'

RFC 919 -- Broadcasting Internet Datagrams

by Angella at Apr 05, 2026, 10:00 PM

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Tien

2 days ago

I think the broadcast IP address is meant to reach all devices in a subnetwork, so I’m leaning towards A.

upvoted 0 times

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