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Which of the following best describes an Intrusion Detection System (IDS) in cloud computing?
a. Prevents network intrusions
b. Detects and reports possible security breaches
c. Authenticates users for cloud access
d. Encrypts data on the cloud
Answer: b. Detects and reports possible security breachessciencedirect
Which IDS type analyzes communications between devices in a cloud-based network?
a. Host-based IDS (HIDS)
b. Signature-based IDS
c. Network-based IDS (NIDS)
d. Policy-based IDS
Answer: c. Network-based IDS (NIDS)wayground
What is the focus of anomaly-based IDS in cloud environments?
a. Detecting malware signatures
b. Modeling normal usage and identifying deviations
c. Blocking suspicious IP addresses
d. Scanning for open ports
Answer: b. Modeling normal usage and identifying deviationssanfoundry
Which IDS is installed on individual cloud virtual machines to monitor local activities?
a. Distributed IDS (DIDS)
b. Host-based IDS (HIDS)
c. Cloud-native IDS
d. Gateway IDS
Answer: b. Host-based IDS (HIDS)wayground
IDS in cloud computing is important for:
a. Cost optimization
b. Increased network throughput
c. Compliance and protecting cloud assets
d. Reducing data storage costs
Answer: c. Compliance and protecting cloud assetssemanticscholar+1
Signature-based IDS in cloud computing detects intrusions by:
a. Searching for known attack patterns
b. Checking for resource misallocations
c. Analyzing encrypted traffic
d. Preventing user authentications
Answer: a. Searching for known attack patternswayground
Which component of cloud IDS collects and logs detected suspicious activity?
a. Detector engine
b. Centralized console
c. Sensor
d. Alert database
Answer: d. Alert databasesanfoundry
What is a principal limitation of signature-based IDS in cloud environments?
a. Generates too many false positives
b. Cannot detect known attacks
c. Cannot detect new or zero-day threats
d. Increases network latency
Answer: c. Cannot detect new or zero-day threatssciencedirect+1
Distributed IDS (DIDS) in a cloud infrastructure refers to:
a. Single endpoint monitoring all cloud servers
b. Multiple detection systems communicating across the network
c. Software running on local storage devices
d. Hardware firewall deployed on a gateway
Answer: b. Multiple detection systems communicating across the networkwayground
In a cloud IDS solution, sensors are used to:
a. Encrypt cloud storage
b. Monitor data traffic and detect anomalies
c. Scale virtual machines
d. Balance network loads
Answer: b. Monitor data traffic and detect anomaliessemanticscholar
One advantage of anomaly-based IDS for public clouds is:
a. Detects only known attacks
b. Requires no baseline for normal behavior
c. Can identify novel threats or zero-day attacks
d. Prevents all types of intrusions
Answer: c. Can identify novel threats or zero-day attackssanfoundry+1
A main challenge in deploying IDS in cloud environments is:
a. Slow performance of hypervisors
b. Encrypted or high-volume traffic
c. Lack of software updates
d. Limited storage capacity
Answer: b. Encrypted or high-volume trafficpublications.eai
The main purpose of cloud IDS is to:
a. Securely store encryption keys
b. Detect malicious activities targeting cloud resources
c. Balance load across servers
d. Automate cloud backups
Answer: b. Detect malicious activities targeting cloud resourcessciencedirect
IDS placed at the hypervisor layer in a cloud can:
a. Monitor only hardware-level attacks
b. Analyze traffic from all virtual machines on a host
c. Detect attacks only in storage devices
d. Disable virtual networks
Answer: b. Analyze traffic from all virtual machines on a hostsemanticscholar
An IDS policy violation is best defined as:
a. Any event matching a suspicious pattern
b. User logging out normally
c. Scheduled patch update
d. Non-malicious network broadcast
Answer: a. Any event matching a suspicious patternsanfoundry
Packet mirroring in cloud IDS systems is employed to:
a. Delete suspicious packets
b. Inspect copies of network traffic for threats
c. Encrypt outbound data
d. Authenticate users
Answer: b. Inspect copies of network traffic for threatscloud.google
Which of the following is not a type of IDS?
a. Network-based IDS
b. Signature-based IDS
c. Host-based IDS
d. Dictionary-based IDS
Answer: d. Dictionary-based IDSwayground
What is the primary output when an IDS detects a possible intrusion?
a. Alert or notification
b. Encrypted backup
c. User authentication request
d. Load balancing response
Answer: a. Alert or notificationsciencedirect
What distinguishes IDS from IPS in the cloud?
a. IDS only detects and reports; IPS can block malicious activity
b. IDS always blocks intrusions automatically
c. IDS replaces firewalls
d. IPS only generates alerts, never blocks
Answer: a. IDS only detects and reports; IPS can block malicious activitytechtarget
Which of the following is a core IDS deployment model in cloud?
a. Application-based
b. User-based
c. Network-based (NIDS) and Host-based (HIDS)
d. Storage-based
Answer: c. Network-based (NIDS) and Host-based (HIDS)sanfoundry
An important IDS function in the cloud is to?
a. Optimize billing
b. Monitor network and user behavior for threats
c. Perform data deduplication
d. Enhance cloud elasticity
Answer: b. Monitor network and user behavior for threatspublications.eai+1
Which of the following provides a detailed overview of all activities detected by IDS?
a. Security audit logs
b. Encryption tables
c. Machine learning models
d. Hypervisor console
Answer: a. Security audit logssciencedirect
A benefit of using machine learning in IDS for the cloud:
a. Only detects previously known attacks
b. Can detect complex and evolving threats
c. Always requires no configuration
d. Guarantees zero false negatives
Answer: b. Can detect complex and evolving threatsacm+1
IDS in cloud computing helps address which compliance requirement?
a. Secure data backup
b. Mandatory breach detection and reporting
c. Account provisioning automation
d. Virtualization support
Answer: b. Mandatory breach detection and reportingsciencedirect
Cloud IDS endpoints typically monitor:
a. Virtual switch configuration only
b. Mirrored inbound and outbound network traffic
c. Only static web content
d. User authentication logs only
Answer: b. Mirrored inbound and outbound network trafficcloud.google
Which of the following is recommended for scaling cloud IDS for large traffic environments?
a. Multiple IDS endpoints per region
b. Disabling packet inspection
c. Assigning minimal resources
d. Limiting IDS to one VM
Answer: a. Multiple IDS endpoints per regioncloud.google
IDS in a multi-tenant cloud must avoid:
a. Interpreting logs
b. Cross-tenant data leakage
c. Generating network maps
d. Updating software
Answer: b. Cross-tenant data leakagesemanticscholar
Best practice for configuring IDS severity levels in the cloud is:
a. Always set to minimal logging
b. Set to maximize visibility (informational)
c. Disable all alerts
d. Randomize alert level
Answer: b. Set to maximize visibility (informational)cloud.google
Main role of IDS sensors in cloud is:
a. Provide authentication
b. Gather and analyze data for anomalies
c. Perform storage deduplication
d. Automate patch management
Answer: b. Gather and analyze data for anomaliessemanticscholar
Which cloud IDS type operates transparently across VM networks?
a. Network-based IDS (NIDS)
b. Host-based IDS (HIDS)
c. Application-based IDS
d. Storage IDS
Answer: a. Network-based IDS (NIDS)wayground
A reason for false positives in cloud IDS:
a. Traffic matches suspicious patterns but is benign
b. Only known threats are detected
c. IDS disables after each alert
d. Data is always encrypted
Answer: a. Traffic matches suspicious patterns but is benignsanfoundry+1
IDS can be integrated with which service to provide real-time protection in the cloud?
a. Cloud firewalls or security groups
b. DNS load balancer only
c. Data deduplication tools
d. Web cache
Answer: a. Cloud firewalls or security groupssciencedirect
IDS management console is responsible for:
a. Alert aggregation, analysis, and interface for admins
b. Encrypting cloud disks
c. Scaling cloud compute resources
d. Performing network address translation
Answer: a. Alert aggregation, analysis, and interface for adminssanfoundry+1
Anomaly-based IDS uses which technique to determine intrusions?
a. Known malware patterns
b. Modeling normal activity and flagging deviations
c. User names and passwords
d. IP address whitelisting
Answer: b. Modeling normal activity and flagging deviationspublications.eai+1
Which cloud deployment model is most challenging for IDS implementation?
a. Private cloud
b. Public cloud
c. Hybrid cloud
d. Community cloud
Answer: b. Public cloudsemanticscholar
Which cloud IDS architecture supports integration, data collection, and coordination at scale?
a. Distributed IDS (DIDS)
b. File integrity monitoring system
c. Standalone host-only monitoring
d. Proxy IDS
Answer: a. Distributed IDS (DIDS)wayground+1
What is a primary factor in selecting IDS technologies for clouds?
a. Compatibility with cloud platforms and scalability
b. Static pricing
c. CPU model speed
d. Branding
Answer: a. Compatibility with cloud platforms and scalabilitysemanticscholar+1
Which is not a typical component of an IDS?
a. Analysis engine
b. Event provider
c. Central backup server
d. Alert database
Answer: c. Central backup serversanfoundry
IDS deployed in hybrid clouds face challenges of:
a. Coordinating across on-prem and cloud
b. Monitoring only single tenant data
c. Enforcing encryption policies
d. Performing local software patching
Answer: a. Coordinating across on-prem and cloudsemanticscholar
Host-based IDS (HIDS) in cloud mainly protects against:
a. Network eavesdropping only
b. Unauthorized activities on specific VMs
c. Hypervisor-level attacks only
d. Backup failures
Answer: b. Unauthorized activities on specific VMswayground+1
Machine learning-enhanced IDS in cloud can identify:
a. Only known signatures
b. Encrypted passwords
c. Previously unseen threats
d. Resource tags
Answer: c. Previously unseen threatsacm+1
Main output of IDS logs is to:
a. Enable regulatory and security audits
b. Provision cloud resources
c. Archive user data
d. Assign resource quotas
Answer: a. Enable regulatory and security auditssciencedirect
One of the biggest scaling issues for IDS in fast-growing clouds is:
a. Monitoring very high throughput with accuracy
b. Deploying more VMs
c. Renaming alert types
d. Assigning more IP addresses
Answer: a. Monitoring very high throughput with accuracycloud.google
Endpoint IDS in Clouds recommend limiting a single endpoint to:
a. 500 Mbps
b. 1 Gbps
c. 2 Gbps
d. 5 Gbps
Answer: d. 5 Gbpscloud.google
Which state-of-the-art technology helps cloud IDS perform better on multi-dimensional datasets?
a. Deep learning models
b. Simple regex rules
c. Static filtering
d. Legacy antivirus
Answer: a. Deep learning modelsacm+1
False negatives in cloud IDS are dangerous because:
a. They allow threats to go undetected
b. They increase network denial rates
c. They block authorized users
d. They encrypt outgoing traffic
Answer: a. They allow threats to go undetectedsemanticscholar+1
A recommended practice to handle traffic spikes for IDS in cloud is:
a. Disable IDS during peak load
b. Allow traffic spikes up to 17 Gbps per endpoint
c. Scale horizontally with additional IDS endpoints
d. Ignore excess traffic
Answer: c. Scale horizontally with additional IDS endpointscloud.google
IDS in cloud environments should be configured to:
a. Ignore all encrypted data
b. Inspect and alert on anomalous as well as known malicious traffic
c. Only monitor admin actions
d. Scan storage arrays only
Answer: b. Inspect and alert on anomalous as well as known malicious trafficpublications.eai+1
IDS is essential for which cloud security operations?
a. Detection, alerting, and forensic analysis
b. Only network configuration
c. VM provisioning automation
d. License management
Answer: a. Detection, alerting, and forensic analysissciencedirect
Cloud-native IDS solutions often leverage what cloud concept for deployment?
a. Virtual machines only
b. Serverless and orchestration frameworks
c. Local scripts
d. Manual auditing
Answer: b. Serverless and orchestration frameworksacm+2

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