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Which of the following is a key driver for the new transport architecture in Telia’s network?

• Increased physical security

• Faster service development for new and existing services

• Reduction in the number of network layers

• Enhanced dependency on a single vendor

Answer explanation

One of the main motivations for updating the transport architecture is to speed up the development of new and existing services, ensuring the network can meet current and future market demands. Slide 25.

What does “DO-OLS” stand for in Telia’s optical network strategy?

• Distributed Optical Layer System

• Decoupled Open Optical Line System

• Disaggregated Open Optical Line System

• Dedicated Optical Line Synchronization

Answer explanation

DO-OLS allows different elements of an optical line system to be supplied by different vendors, enhancing flexibility and competition. Slide 29.

What is a benefit of using a Disaggregated Open Optical Line System (DO-OLS) in Telia’s network?

• It ensures that all components come from a single vendor

• It decreases the overall network capacity

• It reduces the need for optical amplifiers

• It allows flexibility in choosing components from multiple vendors

Answer explanation

DO-OLS enables Telia to use components from various vendors, which increases flexibility, lowers costs, and allows selection of the best available technology for each part. Slide 29.

Which technology is identified as creating additional demand on Telia’s transport network due to its need for synchronization and bandwidth?

• 5G

• Cloud computing

• Fiber optics

• MPLS

Answer explanation

5G’s demands on the transport network include increased synchronization and bandwidth, necessitating network upgrades to support its requirements. Slide 25.

In Telia’s security considerations, which aspect is emphasized as critical to mitigate in case of sabotage?

• Fiber cuts and isolation of regions

• Increased network layering

• Limiting cloud-based services

• Vendor-specific hardware redundancy

Answer explanation

Network resilience, including designs to withstand fiber cuts and regional isolation, is crucial for maintaining service continuity and security. Slide 47.