SP Network Infrastructure and Protocols 3

Question 1

Which technology provides service providers with the ability to engineer traffic paths through their network?

Accepted Answer

MPLS Traffic Engineering (MPLS-TE)

Answer

MPLS Traffic Engineering allows operators to predefine Label Switched Paths (LSPs) that route traffic along specific network paths based on bandwidth constraints.

Question 2

What is the primary advantage of a Carrier Ethernet service over traditional TDM circuits?

Accepted Answer

Scalable bandwidth, lower cost, and native IP support

Answer

Carrier Ethernet provides flexible, scalable bandwidth in Mbps/Gbps increments at lower cost than TDM, with native support for IP/Ethernet framing.

Question 3

In service provider networks, what does 'last mile' refer to?

Accepted Answer

The connection between the provider's network and the customer's premises

Answer

The 'last mile' refers to the final leg of the network that physically connects the service provider's infrastructure to the customer's location.

Question 4

Which WAN technology uses label switching and provides L3VPN services over a provider backbone?

Accepted Answer

MPLS

Answer

MPLS is the dominant WAN technology for providing Layer 3 VPN services, using label-switched paths to efficiently route customer traffic across the provider backbone.

Question 5

What is the role of a CDN (Content Delivery Network) for a service provider's customers?

Accepted Answer

Cache and deliver content from servers geographically close to end users

Answer

A CDN caches static and dynamic content at distributed edge nodes, reducing latency and origin server load by serving content from the nearest geographic location.

SP - Certified Service Provider Practice Test

SP - Certified Service Provider Practice Test

SP Network Infrastructure and Protocols 3