CTE System Architecture & Design 3

Question 1

A telecom architect must choose between synchronous and asynchronous messaging for an event-driven BSS. Which scenario favors asynchronous messaging?

Accepted Answer

Batch processing of daily CDR files to a billing engine

Answer

Asynchronous messaging suits batch or non-time-critical processes like CDR billing where the sender does not need an immediate response to proceed.

Question 2

In 5G standalone (SA) architecture, what is the function of the Network Slice Selection Function (NSSF)?

Accepted Answer

To select the appropriate network slice for a UE based on service requirements

Answer

NSSF determines which network slice instance a user equipment should be connected to, enabling differentiated services like eMBB, URLLC, and mMTC.

Question 3

What is the primary advantage of a distributed core network architecture compared to a centralized core?

Accepted Answer

Reduced latency by processing traffic closer to end users

Answer

Distributing core functions to edge locations reduces round-trip latency, which is critical for latency-sensitive applications like AR/VR and autonomous vehicles.

Question 4

Which protocol is used by network elements in a telecom architecture to export flow-level data for traffic analysis and capacity planning?

Accepted Answer

NetFlow / IPFIX

Answer

NetFlow (and its standardized form IPFIX) exports metadata about IP flows from routers and switches, enabling detailed traffic analysis and capacity planning.

Question 5

In designing a carrier Ethernet network, what does the term 'E-Line' service refer to?

Accepted Answer

A point-to-point Ethernet Virtual Connection between two endpoints

Answer

E-Line (Ethernet Private Line) is an MEF-defined service that provides a point-to-point Ethernet Virtual Connection between exactly two customer endpoints.

(CTE) Certified Telecommunications Executive Practice Test

(CTE) Certified Telecommunications Executive Practice Test

CTE System Architecture & Design 3