ETCP IP and Transport Networks 2

Question 1

Which technology does Ericsson use for network synchronization in transport networks to support LTE/5G timing requirements?

Accepted Answer

PTP (IEEE 1588)

Answer

PTP (Precision Time Protocol, IEEE 1588) provides the sub-microsecond synchronization accuracy required by LTE and 5G base stations.

Question 2

What is the function of RSVP-TE in Ericsson MPLS networks?

Accepted Answer

Signals and reserves resources for traffic-engineered LSPs

Answer

RSVP-TE (Resource Reservation Protocol - Traffic Engineering) signals LSP setup and reserves bandwidth resources along the path.

Question 3

In Ericsson IP transport, what is a VRF used for?

Accepted Answer

Creating separate virtual routing tables for different customers or services

Answer

A VRF (Virtual Routing and Forwarding) instance creates an isolated routing table, allowing multiple customers or services to share the same physical infrastructure.

Question 4

Which Ericsson product line is used to provide microwave backhaul connectivity for mobile sites?

Accepted Answer

Ericsson MINI-LINK

Answer

Ericsson MINI-LINK is the portfolio of microwave backhaul solutions used to connect base stations to the core transport network.

Question 5

What does the term 'Fast Reroute (FRR)' mean in Ericsson MPLS transport?

Accepted Answer

A method to quickly switch to a pre-computed backup path when a failure is detected

Answer

MPLS Fast Reroute provides sub-50ms failure recovery by switching to a pre-established backup LSP upon detecting a link or node failure.

ETCP - Ericsson Technical Certification Program Practice Test

ETCP - Ericsson Technical Certification Program Practice Test

ETCP IP and Transport Networks 2