A host is trying to send a packet to a device on a remote LAN segment, but there are currently no mappings in the ARP cache. How will the device obtain a destination MAC address?
- It will send an ARP request for the MAC address of the destination device.
- It will send the frame and use the device MAC address as the destination.
- It will send the frame with a broadcast MAC address.
- It will send an ARP request for the MAC address of the default gateway.
- It will send an ARP request to the DNS server for the destination MAC address.
Explanation: When sending a packet to a remote destination, a host will need to send the packet to a gateway on the local subnet. Because the gateway will be the Layer 2 destination for the frame on this LAN segment, the destination MAC address must be the address of the gateway. If the host does not already have this address in the ARP cache, it must send an ARP request for the address of the gateway.
Exam with this question: Networking Essentials (Version 2) - Modules 5 - 8: Network Protocols and Architecture Pre-Test Exam
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