Cloud Digital Leader Practice Question: Google Cloud products, services, and solutions
A company needs to store large volumes of unstructured data (images, videos, backups, documents) with high durability and global accessibility. Which Google Cloud service is designed for object storage at any scale?
⚠ Common exam trap
The GCDL exam often tests the distinction between block, file, and object storage services, leading candidates to confuse Persistent Disk (block) or Cloud Filestore (file) with object storage for unstructured data.
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 Storage
Cloud Storage is Google Cloud's fully managed, scalable object storage service designed for unstructured data such as images, videos, backups, and documents. It offers high durability (99.999999999% annual durability) and global accessibility via a unified namespace, making it the correct choice for storing large volumes of unstructured data at any scale.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Persistent Disk
Why it's wrong here
Persistent Disk is block storage that is attached to Compute Engine VMs as virtual hard drives, providing raw, low-latency storage for the VM's operating system, applications, and databases. It is zonal or regional, and each disk can be attached to at most a few VMs, which means it is not accessible over the internet or shared globally. While it can store any file type at the filesystem level, it is not an object store; it lacks HTTP-based APIs, global redundancy, and object-level metadata and security features.
- ✓
Cloud Storage
Why this is correct
Cloud Storage is Google's fully managed, globally distributed object storage service designed for unstructured data such as images, videos, backups, and datasets. It stores objects as immutable blobs in buckets, with a flat namespace and HTTP/S APIs, enabling access from anywhere via standard web protocols. It offers 11 nines of annual durability (99.999999999%) through redundant storage across multiple locations, and its scalability and lifecycle management make it ideal for data lakes, content distribution, and archival storage.
- ✗
Cloud Filestore
Why it's wrong here
Cloud Filestore is a managed Network File System (NFS) service that provides POSIX-compliant file storage for applications running on Compute Engine VMs or Google Kubernetes Engine (GKE) clusters. While it can store arbitrary data, it is fundamentally a file system that requires mounting and is accessible only from within a VPC network, not via globally reachable HTTP endpoints. It is optimized for high-performance shared file workloads, such as analytics or home directories, and is not a distributed object store like Cloud Storage.
- ✗
Cloud Spanner
Why it's wrong here
Cloud Spanner is a fully managed, horizontally scalable relational database service that offers strong consistency, SQL queries, and ACID transactions across regions. It stores structured data in tables with rows and columns, and its optimized engine is for transactional workloads, not for arbitrary unstructured objects like images or videos. Storing large blobs in Spanner would be inefficient and cost-prohibitive, and it does not provide the object lifecycle management, content addressing, or multimedia delivery features of Cloud Storage.
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Cloud Digital Transformation
Key term
Google Cloud
Google Cloud is a suite of cloud computing services offered by Google that provides infrastructure, platform, and software solutions over the internet.
Key term
Cloud storage
Cloud storage is a service that lets you save data on remote servers accessed over the internet instead of on your computer's hard drive.
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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.