Cloud Digital Leader Google Cloud Products and Services Practice Question
A large enterprise is migrating its on-premises data center to Google Cloud. They need a dedicated, low-latency, and highly available connection between their on-premises network and their VPC. Which networking service should they use?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Cloud Interconnect
Cloud Interconnect provides dedicated, high-bandwidth, low-latency connections with SLAs. Cloud VPN is over the public internet and may not meet strict latency/availability requirements. Load Balancing and CDN are not for connectivity to on-premises.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Cloud CDN
Why it's wrong here
Cloud CDN is a content-delivery network that caches HTTP(S) responses at Google's global edge points of presence to accelerate content to end users. It acts as a Layer 7 caching proxy and has no mechanism to establish private, low-latency links between a customer's data center and Google Cloud, nor does it provide IP-level routing or encapsulation. Therefore, it cannot serve as a connectivity solution for migrating an on-premises data center to Google Cloud.
- ✓
Cloud Interconnect
Why this is correct
Cloud Interconnect provides dedicated, private network connectivity between your on-premises data center and Google Cloud, using either Dedicated Interconnect or Partner Interconnect. Because traffic is carried over Google's global network rather than the public internet, it offers consistently low latency, high throughput, and a contractually backed availability SLA (up to 99.99% depending on configuration). For a large enterprise migration that requires reliable performance and predictable network behavior, this is the only option that truly meets those requirements.
- ✗
Cloud VPN
Why it's wrong here
Cloud VPN establishes IPsec VPN tunnels over the public internet to connect your on-premises network to Google Cloud. While it is a valid hybrid connectivity option, it is inherently subject to internet congestion, route variability, and best-effort delivery, so it cannot guarantee the low latency or the high availability SLA that an enterprise migration typically demands. It is best used as a simple encrypted tunnel for testing, backups, or as a failover path alongside Cloud Interconnect, not as the primary migration link.
- ✗
Cloud Load Balancing
Why it's wrong here
Cloud Load Balancing is an application delivery service that distributes incoming traffic across backend instances, such as VM groups or serverless services, based on health checks and load. It operates within Google Cloud's network layer and does not create a connection between your on-premises infrastructure and Google Cloud, nor does it transport Layer 2 or Layer 3 packets across sites. Confusing it for an interconnect service would conflate application-level traffic management with the underlying network transport needed for migration.
Go deeper
Related to this question
Learn chapter
Cloud Digital Transformation
Key term
Cloud VPN
A Cloud VPN is a service that securely connects your private network to a cloud provider's network over the public internet using encryption and authentication.
Key term
Data
Data is raw, unprocessed information, like numbers, words, or measurements, that can be stored, processed, and analyzed by computers.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This GCDL practice question is part of Courseiva's free Google Cloud certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the GCDL exam.