Free Nokia 4A0-100 Practice Exam with Questions & Answers | Set: 3

When a routerforwards a packet, it performs the following operations:

Looks up the destination IP addressin therouting tableto determine thenext hoporegress interface.

Uses theARP tableto resolve theMAC address of the next-hop IP.

Option Ais incorrect – source IP is not used for route lookup.

Option Cis incorrect – routers don’t resolve thesource MAC.

Option Dis partially true, butrouting begins with the routing table, makingBthe most accurate.

Abroadcast IP addressis used tosend a message to all deviceson a specific IP subnet. This address is thehighest 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 Brefers tomulticast, not broadcast.

Option Cmight refer toanycast, which is different.

Option Ddescribes aunicastaddress.