JN0-102 · Question #97
What are two routing requirements for a device to communicate with another device? (Choose two.)
The correct answer is A. end-to-end communications path D. routing information on participating Layer 3 devices. For two devices to communicate through routing, an end-to-end communications path must exist, and all participating Layer 3 devices must possess the necessary routing information to reach the destination.
Question
What are two routing requirements for a device to communicate with another device? (Choose two.)
Options
- Aend-to-end communications path
- Bhosts on the same Layer 2 broadcast domain
- Chosts on the same Layer 3 broadcast domain
- Drouting information on participating Layer 3 devices
How the community answered
(42 responses)- A90% (38)
- B2% (1)
- C7% (3)
Why each option
For two devices to communicate through routing, an end-to-end communications path must exist, and all participating Layer 3 devices must possess the necessary routing information to reach the destination.
An end-to-end communications path, encompassing all interconnected network segments and devices, is a fundamental prerequisite for any traffic to successfully traverse from a source to a destination.
If hosts are located within the same Layer 2 broadcast domain, they can communicate directly via switching without requiring routing.
If hosts reside on the same Layer 3 broadcast domain (i.e., the same IP subnet), they do not need routing to communicate with each other.
All Layer 3 devices (routers) along the path must have valid and accurate routing information in their routing tables, enabling them to correctly identify the next-hop interface for traffic destined to the target network.
Concept tested: Fundamental routing requirements
Source: https://www.juniper.net/documentation/us/en/software/junos/routing-basics/topics/concept/routing-overview.html
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