What does MPLS use to forward packets along precomputed paths?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

Prepare for the Telecom and Networking Test. Practice with multiple choice questions and detailed explanations. Enhance your knowledge in telecommunications and networking to excel in your exam!

Multiple Choice

What does MPLS use to forward packets along precomputed paths?

Explanation:
MPLS forwards packets along precomputed paths using labels. A short label is attached to each packet, and label-switching routers swap or pop the top label and forward based on the label value, guiding the packet along a preinstalled label-switched path. This lets forwarding decisions be made quickly without consulting the IP destination at each hop. In contrast, relying on IP addresses would require routing lookups, TCP sequences pertain to transport-layer reliability, and Ethernet frames are Layer 2 framing not the mechanism MPLS uses to steer traffic.

MPLS forwards packets along precomputed paths using labels. A short label is attached to each packet, and label-switching routers swap or pop the top label and forward based on the label value, guiding the packet along a preinstalled label-switched path. This lets forwarding decisions be made quickly without consulting the IP destination at each hop. In contrast, relying on IP addresses would require routing lookups, TCP sequences pertain to transport-layer reliability, and Ethernet frames are Layer 2 framing not the mechanism MPLS uses to steer traffic.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy