200-901 · Question #78
Which description of a default gateway is true?
The correct answer is A. It is a device that receives IP packets that have no explicit next-hop in the routing table. A default gateway is a router or layer 3 device that serves as the exit point for IP packets destined for networks not explicitly listed in a host's routing table.
Question
Which description of a default gateway is true?
Options
- AIt is a device that receives IP packets that have no explicit next-hop in the routing table.
- BIt is a feature that translates between public and private addresses.
- CIt is a security feature that denies certain traffic.
- DIt is a device that receives Layer 2 frames with an unknown destination address.
How the community answered
(48 responses)- A92% (44)
- B2% (1)
- C2% (1)
- D4% (2)
Why each option
A default gateway is a router or layer 3 device that serves as the exit point for IP packets destined for networks not explicitly listed in a host's routing table.
A default gateway is the IP address of a router on the local network to which a host sends packets destined for any network outside the local segment, specifically when there is no more specific route defined in the host's routing table for that destination. This ensures connectivity to remote networks.
Network Address Translation (NAT) is the feature that translates between public and private IP addresses, not the default gateway itself.
A firewall or Access Control List (ACL) is a security feature that denies certain traffic, not the primary function of a default gateway.
A default gateway operates at Layer 3 (IP packets); Layer 2 frames with unknown destination addresses are typically handled by devices like switches learning MAC addresses, not the default gateway.
Concept tested: Default gateway function
Source: https://learn.microsoft.com/en-us/windows-server/networking/technologies/ip-addressing/configure-tcp-ip-settings
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