CTE Cloud Infrastructure 3 — Questions and Answers
Question 1: A telecom executive is evaluating cloud providers for 5G core deployment. Which factor is most critical from a latency perspective?
- Number of cloud regions globally
- Proximity of cloud edge nodes to RAN sites (Correct answer)
- Cloud provider's total revenue
- Number of supported programming languages
Correct answer: Proximity of cloud edge nodes to RAN sites
5G requires ultra-low latency, so the physical proximity of cloud edge compute to RAN sites is the dominant latency factor.
Question 2: What is the role of a Service Mesh in cloud-native telecom applications?
- It provides physical network connectivity between data centers
- It manages inter-service communication, observability, and security within microservices (Correct answer)
- It replaces the need for API gateways
- It provides persistent storage for containerized workloads
Correct answer: It manages inter-service communication, observability, and security within microservices
A service mesh (e.g., Istio) handles east-west traffic management, mTLS security, and telemetry between microservices without code changes.
Question 3: Which cloud resilience strategy involves distributing active workloads across multiple availability zones simultaneously?
- Active-passive failover
- Active-active deployment (Correct answer)
- Cold standby
- Pilot light
Correct answer: Active-active deployment
Active-active deployment runs identical workloads in multiple zones simultaneously, providing both load distribution and instant failover.
Question 4: In cloud infrastructure for telecommunications, what does 'auto-scaling' primarily address?
- Automatically upgrading software versions
- Dynamically adjusting compute capacity based on real-time demand (Correct answer)
- Automating DNS record updates
- Scaling storage I/O limits
Correct answer: Dynamically adjusting compute capacity based on real-time demand
Auto-scaling automatically provisions or removes compute instances based on predefined metrics like CPU usage or request rate.
Question 5: What distinguishes a 'microservices' architecture from a 'monolithic' architecture in telecom BSS/OSS modernization?
- Microservices run faster because they use less code
- Microservices decompose applications into independently deployable, loosely coupled services (Correct answer)
- Microservices always require more hardware than monoliths
- Microservices eliminate the need for APIs between components
Correct answer: Microservices decompose applications into independently deployable, loosely coupled services
Microservices break applications into small, independent services each responsible for a specific business function, enabling independent scaling and deployment.
Question 6: Which cloud security principle ensures that telecom application components only have access to the minimum resources needed to perform their functions?
- Defense in depth
- Principle of least privilege (Correct answer)
- Zero trust networking
- Security by obscurity
Correct answer: Principle of least privilege
The principle of least privilege limits each component's access rights to only what is strictly necessary, reducing the blast radius of any compromise.
Question 7: A telecom operator uses Infrastructure as Code (IaC) for its cloud deployments. What is the primary benefit of this approach?
- It eliminates the need for cloud engineers
- It enables reproducible, version-controlled, and automated infrastructure provisioning (Correct answer)
- It reduces cloud billing by automatically rightsizing instances
- It provides real-time network monitoring dashboards
Correct answer: It enables reproducible, version-controlled, and automated infrastructure provisioning
IaC codifies infrastructure configuration, enabling version control, peer review, automated testing, and consistent repeatable deployments.
CTE Cloud Infrastructure 3
A telecom executive is evaluating cloud providers for 5G core deployment.
Which factor is most critical from a latency perspective?