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質問 # 45
Richard Harris works as a senior cloud security engineer in a multinational company. His organization uses Microsoft Azure cloud-based services. Richard would like to manage, control, and monitor the access to important resources in his organization. Which service in Azure AD can enable Richard to manage, control, and monitor the access to resources in Azure. Azure AD. and other Microsoft online services such as Microsoft Intune or Microsoft 365?
- A. System for Cross-Domain Identity Management
- B. Federated Identity Management
- C. Privileged Access Management
- D. Privileged Identity Management
正解：D
質問 # 46
An IT organization named WITEC Solutions has adopted cloud computing. The organization must manage risks to keep its business data and services secure and running by gaining knowledge about the approaches suitable for specific risks. Which risk management approach can compensate the organization if it loses sensitive data owing to the risk of an activity?
- A. Risk acceptance
- B. Risk mitigation
- C. Risk avoidance
- D. Risk transference
正解：D
解説：
In risk management, the approach that can compensate an organization for the loss of sensitive data due to the risks of an activity is known as risk transference.
Risk Transference: This approach involves transferring the risk to a third party, typically through insurance or outsourcing. In the context of data loss, an organization can purchase a cyber insurance policy that would provide financial compensation in the event of a data breach or loss1.
How It Works:
Insurance Policies: Cyber insurance policies can cover various costs associated with data breaches, including legal fees, notification costs, and even the expenses related to public relations efforts to manage the reputation damage.
Contracts and Agreements: When outsourcing services or functions that involve sensitive data, contracts can include clauses that hold the service provider responsible for any data loss or breaches, effectively transferring the risk away from the organization.
Benefits of Risk Transference:
Financial Protection: Provides a financial safety net that helps the organization recover from the loss without bearing the entire cost.
Focus on Core Business: Allows the organization to focus on its core activities without the need to allocate excessive resources to manage specific risks.
Reference:
Key Considerations in Protecting Sensitive Data Leakage Using Data Loss Prevention Tools1.
Data Risk Management: Process and Best Practices2.
質問 # 47
Daffod is an American cloud service provider that provides cloud-based services to customers worldwide.
Several customers are adopting the cloud services provided by Daffod because they are secure and cost-effective. Daffod is compliant with the cloud computing law that protects the student information collected by educational institutions and their associated vendors. Based on the information given, which law does Daffod adhere to?
- A. ECPA
- B. CLOUD
- C. FISMA
- D. FERPA
正解：D
解説：
* FERPA: The Family Educational Rights and Privacy Act (FERPA) is a federal law that protects the privacy of student education records1.
* Protection of Student Information: FERPA applies to all schools that receive funds under an applicable program of the U.S. Department of Education. It gives parents certain rights with respect to their children's education records, rights which transfer to the student when they reach the age of 18 or attend a school beyond the high school level1.
* Compliance by Cloud Service Providers: Cloud service providers like Daffod, who handle student information collected by educational institutions, must comply with FERPA regulations to ensure the
* protection and privacy of student data1.
* Vendor Responsibility: Vendors associated with educational institutions that receive educational records must also adhere to FERPA's requirements to protect the confidentiality of the data1.
* Exclusion of Other Laws: While other laws such as ECPA, CLOUD, and FISMA also deal with privacy and data protection, FERPA is specifically designed to protect the privacy of students' educational records and is the relevant law in this context1.
References:
* Rick's Cloud article on laws and regulations governing the cloud computing environment1.
質問 # 48
Bruce McFee works as a cloud security engineer in an IT company. His organization uses AWS cloud-based services. Because Amazon CloudFront offers low-latency and high-speed data delivery through a user-friendly environment, Bruce's organization uses the CloudFront content delivery network (CDN) web service for the fast and secure distribution of data to various customers throughout the world. How does CloudFront accelerate content distribution?
- A. By sending the requests of end users to the nearest edge locations
- B. By restricting the requests of end users from the nearest edge locations
- C. By forwarding the requests of end users to the original source
- D. By routing the requests of end users to the original source
正解：A
解説：
Explore
Content Delivery Network (CDN): Amazon CloudFront is a CDN that accelerates the delivery of content by caching it at edge locations that are closer to the end-users1.
Edge Locations: These are data centers located around the world that store cached copies of content so that it can be delivered more quickly to users1.
Low Latency: When a user requests content, DNS routes the request to the CloudFront Point of Presence (POP) that can best serve the request, typically the nearest CloudFront POP in terms of latency1.
Cache Check: CloudFront checks its cache for the requested object. If the object is in the cache, CloudFront returns it to the user1.
Cache Miss: If the object is not in the cache, CloudFront forwards the request to the origin server for the object, and then the origin server sends the object back to the edge location. As soon as the first byte arrives from the origin, CloudFront begins to forward the object to the user and adds it to the cache for the next time someone requests it1.
Reference:
Amazon's official documentation on how CloudFront delivers content1.
質問 # 49
For securing data, an AWS customer created a key in the Alabama region to encrypt their data in the California region. Two users were added to the key along with an external AWS account. When the AWS customer attempted to encrypt an S3 object, they observed that the key is not listed. What is the reason behind this?
- A. Encryption key should be in the same region
- B. It takes time for new keys to be listed
- C. AWS does not support external AWS accounts
- D. S3 cannot be integrated with KMS
正解：A
解説：
AWS Key Management Service (KMS) keys are region-specific. An encryption key created in one region (e.g., Alabama) cannot be used to encrypt data in another region (e.g., California).
When attempting to encrypt an S3 object, the KMS key must reside in the same region as the S3 bucket. This is a limitation designed to ensure data locality and security.
質問 # 50
Trevor Noah works as a cloud security engineer in an IT company located in Seattle, Washington. Trevor has implemented a disaster recovery approach that runs a scaled-down version of a fully functional environment in the cloud. This method is most suitable for his organization's core business-critical functions and solutions that require the RTO and RPO to be within minutes. Based on the given information, which of the following disaster recovery approach is implemented by Trevor?
- A. Warm Standby
- B. Pilot Light approach
- C. Backup and Restore
- D. Multi-Cloud Option
正解：A
解説：
The Warm Standby approach in disaster recovery involves running a scaled-down version of a fully functional environment in the cloud. This method is activated quickly in case of a disaster, ensuring that the Recovery Time Objective (RTO) and Recovery Point Objective (RPO) are within minutes.
Scaled-Down Environment: A smaller version of the production environment is always running in the cloud. This includes a minimal number of resources required to keep the application operational12.
Quick Activation: In the event of a disaster, the warm standby environment can be quickly scaled up to handle the full production load12.
RTO and RPO: The warm standby approach is designed to achieve an RTO and RPO within minutes, which is essential for business-critical functions12.
Business Continuity: This approach ensures that core business functions continue to operate with minimal disruption during and after a disaster12.
Reference:
Warm Standby is a disaster recovery strategy that provides a balance between cost and downtime. It is less expensive than a fully replicated environment but offers a faster recovery time than cold or pilot light approaches12. This makes it suitable for organizations that need to ensure high availability and quick recovery for their critical systems.
質問 # 51
On database system of a hospital maintains rarely-accessed patients' data such as medical records including high-resolution images of ultrasound reports, MRI scans, and X-Ray reports for years. These records occupy a lot of space and need to be kept safe as it contains sensitive medical dat a. Which of the following Azure storage services best suitable for such rarely-accessed data with flexible latency requirement?
- A. Azure File Sync
- B. Azure Recovery Services Vault
- C. Azure Backup: Restore-as-a-Service
- D. Azure Archive Storage
正解：D
解説：
Data Characteristics: The hospital's database system contains rarely-accessed, sensitive medical records, including high-resolution images, which require secure and cost-effective long-term storage1.
Azure Archive Storage: Azure Archive Storage is designed for data that is rarely accessed and has flexible latency requirements. It offers a cost-effective solution for storing large volumes of data that does not need to be accessed frequently1.
Security and Compliance: Azure Archive Storage provides secure storage for sensitive medical data, ensuring compliance with healthcare regulations such as HIPAA and GDPR1.
Cost Efficiency: By using Azure Archive Storage, the hospital can significantly reduce storage costs compared to storing data on higher-performance tiers that are intended for frequently accessed data1.
Exclusion of Other Options: Azure Backup and Azure Recovery Services Vault are primarily used for backup and disaster recovery, not for archiving. Azure File Sync is used for syncing files across multiple locations and is not optimized for archival purposes1.
Reference:
Microsoft Azure's official page on Azure Archive Storage1.
質問 # 52
Georgia Lyman works as a cloud security engineer in a multinational company. Her organization uses cloud-based services. Its virtualized networks and associated virtualized resources encountered certain capacity limitations that affected the data transfer performance and virtual server communication. How can Georgia eliminate the data transfer capacity thresholds imposed on a virtual server by its virtualized environment?
- A. By allowing the virtual server to bypass the hypervisor and access the I/O card of the physical server directly
- B. By allowing the virtual appliance to bypass the hypervisor and access the I/O card of the physical server directly
- C. By restricting the virtual appliance to bypass the hypervisor and access the I/O card of the physical server directly
- D. By restricting the virtual server to bypass the hypervisor and access the I/O card of the physical server directly
正解：A
解説：
Virtual servers can face performance limitations due to the overhead introduced by the hypervisor in a virtualized environment. To improve data transfer performance and communication between virtual servers, Georgia can eliminate the data transfer capacity thresholds by allowing the virtual server to bypass the hypervisor and directly access the I/O card of the physical server. This technique is known as Single Root I/O Virtualization (SR-IOV), which allows virtual machines to directly access network interfaces, thereby reducing latency and improving throughput.
Understanding SR-IOV: SR-IOV enables a network interface card (NIC) to appear as multiple separate physical devices to the virtual machines, allowing them to bypass the hypervisor.
Performance Benefits: By bypassing the hypervisor, the virtual server can achieve near-native performance for network I/O, eliminating bottlenecks and improving data transfer rates.
Implementation: This requires hardware support for SR-IOV and appropriate configuration in the hypervisor and virtual machines.
Reference
VMware SR-IOV
Intel SR-IOV Overview
質問 # 53
SecureSoft IT Pvt. Ltd. is an IT company located in Charlotte, North Carolina, that develops software for the healthcare industry. The organization generates a tremendous amount of unorganized data such as video and audio files. Kurt recently joined SecureSoft IT Pvt. Ltd. as a cloud security engineer. He manages the organizational data using NoSQL databases. Based on the given information, which of the following data are being generated by Kurt's organization?
- A. Structured Data
- B. Metadata
- C. Semi-Structured Data
- D. Unstructured Data
正解：D
解説：
The data generated by SecureSoft IT Pvt. Ltd., which includes video and audio files, is categorized as unstructured data. This is because it does not follow a specific format or structure that can be easily stored in traditional relational databases.
Understanding Unstructured Data: Unstructured data refers to information that either does not have a pre-defined data model or is not organized in a pre-defined manner. It includes formats like audio, video, and social media postings.
Role of NoSQL Databases: NoSQL databases are designed to store, manage, and retrieve unstructured data efficiently. They can handle a variety of data models, including document, graph, key-value, and wide-column stores.
Management of Data: As a cloud security engineer, Kurt's role involves managing this unstructured data using NoSQL databases, which provide the flexibility required for such diverse data types.
Significance in Healthcare: In the healthcare industry, unstructured data is particularly prevalent due to the vast amounts of patient information, medical records, imaging files, and other forms of data that do not fit neatly into tabular forms.
Reference:
Unstructured data is a common challenge in the IT sector, especially in fields like healthcare that generate large volumes of complex data. NoSQL databases offer a solution to manage this data effectively, providing scalability and flexibility. SecureSoft IT Pvt. Ltd.'s use of NoSQL databases aligns with industry practices for handling unstructured data efficiently.
質問 # 54
Chris Noth has been working as a senior cloud security engineer in CloudAppSec Private Ltd. His organization has selected a DRaaS (Disaster Recovery as a Service) company to provide a disaster recovery site that is fault tolerant and consists of fully redundant equipment with network connectivity and real-time data synchronization. Thus, if a disaster strikes Chris' organization, failover can be performed to the disaster recovery site with minimal downtime and zero data loss. Based on the given information, which disaster recovery site is provided by the DRaaS company to Chris' organization?
- A. Warm Site
- B. Remote site
- C. Hot Site
- D. Cold Site
正解：C
解説：
* Disaster Recovery as a Service (DRaaS): DRaaS is a third-party service that provides organizations with a secondary site infrastructure, which employs cloud computing for application and data recovery from synchronous or asynchronous replication1.
* Fault Tolerance and Redundancy: A fault-tolerant disaster recovery site with fully redundant equipment ensures that all critical systems and components have backups ready to take over in case of failure1.
* Real-Time Data Synchronization: This feature ensures that data is continuously mirrored to the disaster recovery site, allowing for real-time recovery and zero data loss during failover1.
* Hot Site: A hot site is a fully operational offsite data center equipped with hardware and software, network connectivity, and real-time data synchronization. It is ready to assume operation at a moment's notice, which aligns with the description provided1.
* Minimal Downtime: The use of a hot site allows for minimal downtime during a disaster, as the site is already running and can take over immediately without the need to set up or configure equipment1.
References:
* Flexential's explanation of Disaster Recovery as a Service (DRaaS)1.
質問 # 55
Scott Herman works as a cloud security engineer in an IT company located in Ann Arbor, Michigan. His organization uses Office 365 Business Premium that provides Microsoft Teams, secure cloud storage, business email, premium Office applications across devices, advanced cyber threat protection, and device management.
Which of the following cloud computing service models does Microsoft Office 365 represent?
- A. SaaS
- B. laaS
- C. DaaS
- D. PaaS
正解：A
解説：
SaaS, or Software as a Service, is a cloud computing model where software applications are delivered over the internet. Users subscribe to the service rather than purchasing and installing software on individual devices. Microsoft Office 365 fits this model as it provides access to various applications such as Microsoft Teams, secure cloud storage, business email, and more through a subscription service. Users can access these services from any device, provided they have an internet connection.
Here's a breakdown of how Office 365 aligns with the SaaS model:
Subscription-Based: Office 365 operates on a subscription model, where users pay a recurring fee to use the service.
Cloud-Hosted Applications: The suite includes cloud-hosted versions of traditional Microsoft applications, as well as new tools like Microsoft Teams.
Managed by Provider: Microsoft manages the infrastructure, security, and updates for these applications, relieving users from these responsibilities.
Accessible from Anywhere: As a cloud service, Office 365 can be accessed from anywhere, on any device with internet connectivity.
Business Services: It includes business services like email and device management, which are typical features of SaaS offerings.
Reference:
Microsoft's description of Office 365 as a cloud-based service1.
Microsoft Azure's definition of SaaS, mentioning Office 365 as an example2.
Microsoft support page explaining Microsoft 365 as a subscription service3.
質問 # 56
Sandra, who works for SecAppSol Technologies, is on a vacation. Her boss asked her to solve an urgent issue in an application. Sandra had to use applications present on her office laptop to solve this issue, and she successfully rectified it. Despite being in a different location, she could securely use the application. What type of service did the organization use to ensure that Sandra could access her office laptop from a remote area?
- A. Amazon AppStream 2.0
- B. Amazon Elastic Transcoder Service
- C. Amazon Simple Workflow
- D. Amazon SQS
正解：A
解説：
Amazon AppStream 2.0 is a fully managed application streaming service that allows users to access desktop applications from anywhere, making it the service that enabled Sandra to access her office laptop applications remotely. Here's how it works:
Application Hosting: AppStream 2.0 hosts desktop applications on AWS and streams them to a web browser or a connected device.
Secure Access: Users can access these applications securely from any location, as the service provides a secure streaming session.
Resource Optimization: It eliminates the need for high-end user hardware since the processing is done on AWS servers.
Central Management: The organization can manage applications centrally, which simplifies software updates and security.
Integration: AppStream 2.0 integrates with existing identity providers and supports standard security protocols.
Reference:
AWS documentation on Amazon AppStream 2.0, detailing how it enables remote access to applications1.
An AWS blog post explaining the benefits of using Amazon AppStream 2.0 for remote application access2.
質問 # 57
Securelnfo Pvt. Ltd. has deployed all applications and data in the AWS cloud. The security team of this organization would like to examine the health of the organization's website regularly and switch (or failover) to a backup site if the primary website becomes unresponsive. Which of the following AWS services can provide DNS failover capabilities and health checks to ensure the availability of the organization's website?
- A. Amazon Route 53 Security
- B. Amazon CloudTrail Security
- C. Amazon CloudFront Security
- D. Amazon CloudWatch Security
正解：A
解説：
Step by Step Comprehensive Detailed Explanation:Amazon Route 53 can provide DNS failover capabilities and health checks to ensure the availability of SecureInfo Pvt. Ltd.'s website. Here's how it works:
* Health Checks: Route 53 performs health checks on the website to monitor its health and performance1.
* DNS Failover: If the primary site becomes unresponsive, Route 53 can automatically route traffic to a healthy backup site1.
* Regular Examination: The health checks can be configured to run at regular intervals, ensuring continuous monitoring of the website's availability1.
* Traffic Routing: Route 53 uses DNS failover records to manage traffic failover for the application, directing users to the best available endpoint1.
References:Amazon Route 53 is a scalable and highly available Domain Name System (DNS) web service. It is designed to give developers and businesses an extremely reliable and cost-effective way to route end users to Internet applications by translating human-readable names like www.example.com into the numeric IP addresses like 192.0.2.1 that computers use to connect to each other1. Route 53 is fully compliant with IPv6 as well1.
質問 # 58
Thomas Gibson is a cloud security engineer working in a multinational company. Thomas has created a Route
53 record set from his domain to a system in Florida, and a similar record to machines in Paris and Singapore.
Assume that network conditions remain unchanged and Thomas has hosted the application on Amazon EC2 instance; moreover, multiple instances of the application are deployed on different EC2 regions. When a user located in London visits Thomas's domain, to which location does Amazon Route 53 route the user request?
- A. Paris
- B. Florida
- C. Singapore
- D. London
正解：A
解説：
Amazon Route 53 uses geolocation routing to route traffic based on the geographic location of the users, meaning the location from which DNS queries originate1. When a user located in London visits Thomas's domain, Amazon Route 53 will likely route the user request to the location that provides the best latency or is geographically closest among the available options.
* Geolocation Routing: Route 53 will identify the geographic location of the user in London and route the request to the nearest or most appropriate endpoint.
* Routing Decision: Given the locations mentioned (Florida, Paris, and Singapore), Paris is geographically closest to London compared to Florida and Singapore.
* Latency Consideration: If latency-based routing is also configured, Route 53 will route the request to the region that provides the best latency, which is likely to be Paris for a user in London2.
* Final Routing: Therefore, the user request from London will be routed to the machines in Paris,
* ensuring a faster and more efficient response.
References:Amazon Route 53's routing policies are designed to optimize the user experience by directing traffic based on various factors such as geographic location, latency, and health checks12. The geolocation routing policy, in particular, helps in serving traffic from the nearest regional endpoint, which in this case would be Paris for a user located in London1.
質問 # 59
Veronica Lauren has an experience of 4 years as a cloud security engineer. Recently, she joined an IT company as a senior cloud security engineer. In 2010, her organization became a victim of a cybersecurity attack in which the attacker breached her organization's cloud security perimeter and stole sensitive information. Since then, her organization started using Google cloud-based services and migrated the organizational workload and data in the Google cloud environment. Veronica would like to detect security breaches in her organization's cloud security perimeter. Which of the following built-in service of Google Security Command Center can help Veronica in monitoring her organization's cloud logging stream and collect logs from one or multiple projects to detect security breaches such as the presence of malware, brute force SSH attempts, and cryptomining?
- A. Container Threat Detection
- B. Event Threat Detection
- C. Security Health Analytics
- D. Web Security Scanner
正解：B
解説：
To monitor the organization's cloud logging stream and detect security breaches, Veronica Lauren can utilize the Event Threat Detection service within Google Security Command Center.
Event Threat Detection: This built-in service of Google Security Command Center is designed to monitor cloud logs across multiple projects and detect threats such as malware, brute force SSH attempts, and cryptomining1. It uses threat intelligence and advanced analytics to identify and alert on suspicious activity in real time.
Functionality:
Log Analysis: Event Threat Detection continuously analyzes the logs generated by Google Cloud services.
Threat Detection: It automatically detects the presence of threats like malware, SSH brute force attempts, and cryptomining activities.
Alerts and Findings: When a potential threat is detected, Event Threat Detection issues findings that are integrated into the Security Command Center dashboard for further investigation.
Why Not the Others?:
Web Security Scanner: This service is primarily used for identifying security vulnerabilities in web applications hosted on Google Cloud, not for monitoring logs for security breaches.
Container Threat Detection: While this service is useful for detecting runtime threats in containers, it does not provide the broad log analysis capabilities that Event Threat Detection offers.
Security Health Analytics: This service provides automated security scanning to detect misconfigurations and compliance violations in Google Cloud resources, but it is not specifically focused on the real-time threat detection provided by Event Threat Detection.
Reference:
Security Command Center overview | Google Cloud1.
質問 # 60
Trevor Holmes works as a cloud security engineer in a multinational company. Approximately 7 years ago, his organization migrated its workload and data to the AWS cloud environment. Trevor would like to monitor malicious activities in the cloud environment and protect his organization's AWS account, data, and workloads from unauthorized access. Which of the following Amazon detection services uses anomaly detection, machine learning, and integrated threat intelligence to identify and classify threats and provide actionable insights that include the affected resources, attacker IP address, and geolocation?
- A. Amazon Inspector
- B. Amazon Macie
- C. Amazon Security Hub
- D. Amazon GuardDuty
正解：D
解説：
* Amazon GuardDuty: It is a threat detection service that continuously monitors for malicious activity and unauthorized behavior across your AWS accounts and workloads1.
* Anomaly Detection: GuardDuty uses anomaly detection to monitor for unusual behavior that may indicate a threat1.
* Machine Learning: It employs machine learning to better identify threat patterns and reduce false positives1.
* Integrated Threat Intelligence: The service utilizes threat intelligence feeds from AWS and leading third parties to identify known threats1.
* Actionable Insights: GuardDuty provides detailed findings that include information about the nature of
* the threat, the affected resources, the attacker's IP address, and geolocation1.
* Protection Scope: It protects against a wide range of threats, including compromised instances, reconnaissance by attackers, account compromise risks, and instance compromise risks1.
References:
* AWS's official documentation on Amazon GuardDuty1.
質問 # 61
TeratInfo Pvt. Ltd. is an IT company that develops software products and applications for financial organizations. Owing to the cost-effective storage features and robust services provided by cloud computing, TeratInfo Pvt. Ltd. adopted cloud-based services. Recently, its security team observed a dip in the organizational system performance. Susan, a cloud security engineer, reviewed the list of publicly accessible resources, security groups, routing tables, ACLs, subnets, and IAM policies. What is this process called?
- A. Checking audit and evidence-gathering features in the cloud service
- B. Testing for virtualization management security
- C. Checking for the right implementation of security management
- D. Performing cloud reconnaissance
正解：D
解説：
The process that Susan, a cloud security engineer, is performing by reviewing the list of publicly accessible resources, security groups, routing tables, ACLs, subnets, and IAM policies is known as performing cloud reconnaissance.
* Cloud Reconnaissance: This term refers to the process of gathering information about the cloud environment to identify potential security issues. It involves examining the configurations and settings of cloud resources to detect any misconfigurations or vulnerabilities that could be exploited by attackers.
* Purpose of Cloud Reconnaissance:
* Identify Publicly Accessible Resources: Determine if any resources are unintentionally exposed to the public internet.
* Review Security Groups and ACLs: Check if the access control lists (ACLs) and security groups are correctly configured to prevent unauthorized access.
* Examine Routing Tables and Subnets: Ensure that network traffic is being routed securely and that subnets are configured to segregate resources appropriately.
* Assess IAM Policies: Evaluate identity and access management (IAM) policies to ensure that they follow the principle of least privilege and do not grant excessive permissions.
* Outcome of Cloud Reconnaissance: The outcome of this process should be a comprehensive understanding of the cloud environment's security posture, which can help in identifying and mitigating potential security risks.
References:
* Cloud Security Alliance: Cloud Reconnaissance and Security Best Practices.
* NIST Cloud Computing Security Reference Architecture.
質問 # 62
Stephen Cyrus has been working as a cloud security engineer in an MNC over the past 7 years. The database administration team requested Stephen to configure a server instance that can enhance the performance of their new database server running on Compute Engine. The database is built on MySQL running on Debian Linux and it is used to import and normalize the company's performance statistics. They have an n2-standard-8 virtual machine with 80 GB of SSD zonal persistent disk, which cannot be restarted until the next maintenance event. Which of the following can help Stephen to enhance the performance of this VM quickly and in a cost-effective manner?
- A. Enhance the VM memory to 60 GB
- B. Create a new VM that runs on PostgreSQL
- C. Migrate their performance metrics warehouse to BigQuery
- D. Dynamically resize the SSD persistent disk to 500 GB
正解：D
解説：
To enhance the performance of a MySQL database running on Compute Engine quickly and in a cost-effective manner, Stephen can dynamically resize the SSD persistent disk to 500 GB. Here's why this option is effective:
* Increased IOPS and Throughput: SSDs provide higher input/output operations per second (IOPS) and throughput compared to traditional hard drives. By increasing the size of the SSD persistent disk, Stephen can benefit from increased IOPS and throughput, which are crucial for database performance, especially when dealing with large volumes of data imports and normalization processes1.
* No Downtime Required: Dynamically resizing the SSD persistent disk can be done without stopping the virtual machine, which aligns with the requirement that the VM cannot be restarted until the next maintenance event1.
* Cost-Effectiveness: Resizing the disk is a cost-effective solution because it does not require provisioning additional compute resources or migrating to a different database service, which could incur higher costs and complexity1.
* Immediate Performance Boost: The performance improvement is immediate after the disk resize, as the database can utilize the additional space for better disk I/O performance, which is often a bottleneck in database operations1.
References:
* LogRocket Blog: 5 ways to rapidly improve MySQL database performance1.
* Google Cloud Documentation: Architectures for high availability of MySQL clusters on Compute Engine2.
* Percona Blog: MySQL Performance Tuning 101: Key Tips to Improve MySQL Database Performance3.
質問 # 63
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EC-COUNCIL 312-40 認定試験の出題範囲：
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学習材料は有効な312-40効率的問題集：https://jp.fast2test.com/312-40-premium-file.html