Cloud Digital Leader Google Cloud Security Practice Question
What is the primary purpose of VPC Service Controls?
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
✓
To prevent data exfiltration from Google Cloud services
VPC Service Controls create perimeters around Google Cloud services to prevent data exfiltration. VPC firewall rules control network traffic. Cloud Armor is for DDoS. Cloud IDS is for intrusion detection.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
To control ingress and egress traffic at the network level
Why it's wrong here
VPC firewall rules are the appropriate mechanism for controlling ingress/egress at the network level, evaluating packet attributes like IP addresses and ports. VPC Service Controls, in contrast, operate at the Google Cloud API layer, enforcing context-aware access to managed services without inspecting network packets. Consequently, this option misattributes a core network function to a service designed for data boundary control.
- ✗
To detect network intrusions
Why it's wrong here
Intrusion detection is the domain of Cloud IDS, which inspects traffic for signatures and anomalies that indicate malicious activity. VPC Service Controls never analyze packet contents; they enforce policies on service requests and responses to prevent unauthorized data movement. Thus, this choice mistakes a threat-detection tool for a data-exfiltration prevention mechanism.
- ✓
To prevent data exfiltration from Google Cloud services
Why this is correct
VPC Service Controls create perimeters around Google Cloud APIs and services, using context such as identity, source IP, and resource metadata to authorize access. This prevents copying or moving data from within the perimeter to external destinations, directly reducing the risk of data theft. By working at the API layer, it complements IAM and network controls with a data-boundary layer.
- ✗
To protect against DDoS attacks
Why it's wrong here
DDoS protection is delivered by Cloud Armor, which mitigates volumetric and protocol attacks at the network edge through filtering and rate limiting. VPC Service Controls do not address network availability or absorb attack traffic; they restrict data access and transfer. Therefore, this option confuses availability protection with data access governance.
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Related to this question
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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
DDoS
A DDoS (Distributed Denial-of-Service) attack is a malicious attempt to disrupt normal traffic of a targeted server, service, or network by overwhelming it with a flood of internet traffic from multiple compromised systems.
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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.