COH100 – COHESITY PROTECTION ASSOCIATE:
DATAPROTECT EXAM | 250 Advanced-Level
Multiple Choice Questions with Answers & Rationales
| latest update | 2026 update | instant download
1. What is the primary architectural model underlying Cohesity DataProtect?
A) A traditional backup server with dedicated tape libraries B) A hyperconverged secondary
storage platform that consolidates backup, recovery, and data management on a distributed scale-
out cluster C) A cloud-only backup solution requiring no on-premises hardware D) A SAN-
based backup appliance with deduplicated storage pools
B) A hyperconverged secondary storage platform that consolidates backup, recovery, and
data management on a distributed scale-out cluster (correct answer)
Rationale: Cohesity DataProtect is built on a hyperconverged secondary storage architecture —
combining compute, storage, and networking in a scale-out cluster that eliminates backup silos
and consolidates data protection workloads.
2. In Cohesity's cluster architecture, what is the minimum number of nodes required to
form a production cluster?
A) 1 B) 2 C) 3 D) 5
C) 3 (correct answer)
Rationale: A Cohesity production cluster requires a minimum of 3 nodes to achieve a quorum,
provide fault tolerance, and support the distributed metadata and data storage services that
underpin the platform.
3. What is a "Protection Group" in Cohesity DataProtect?
A) A collection of Cohesity nodes grouped for load balancing B) A logical grouping of source
objects (VMs, databases, files) that share the same protection policy, schedule, and storage
domain C) A set of cloud archive targets grouped by geographic region D) A cluster of physical
agents deployed on source hosts
,B) A logical grouping of source objects that share the same protection policy, schedule, and
storage domain (correct answer)
Rationale: A Protection Group in Cohesity is the core protection unit — a collection of sources
(VMs, databases, volumes) configured with a shared policy defining schedule, retention, and
replication settings.
4. Which Cohesity component is responsible for orchestrating backup jobs, managing
policies, and providing the management interface?
A) Cohesity DataAgent B) Cohesity Iris (Management UI and API) C) Cohesity SpanFS D)
Cohesity Helios
B) Cohesity Iris (Management UI and API) (correct answer)
Rationale: Cohesity Iris is the unified management interface (web UI and REST API) through
which administrators configure protection policies, monitor jobs, manage storage, and
orchestrate all DataProtect operations.
5. What is "SpanFS" in the Cohesity architecture?
A) A network protocol for connecting to cloud storage B) Cohesity's distributed file system that
spans all nodes in the cluster, providing a single namespace for all backup data C) A SAN
storage protocol used for block-level backups D) A replication protocol for sending data to
remote clusters
B) Cohesity's distributed file system that spans all nodes in the cluster, providing a single
namespace for all backup data (correct answer)
Rationale: SpanFS is Cohesity's purpose-built distributed file system that aggregates storage
across all cluster nodes into a single logical pool with a unified namespace, enabling scalability
and resilience.
6. What is the function of the Cohesity "DataAgent" (also called the Cohesity Agent)?
A) The primary cluster management service running on every node B) A lightweight software
component installed on physical servers or VMs to enable application-consistent backup and
granular recovery of databases and files C) A hardware component embedded in each Cohesity
node D) A cloud connector that authenticates Cohesity to cloud storage providers
,B) A lightweight software component installed on physical servers or VMs to enable
application-consistent backup and granular recovery (correct answer)
Rationale: The Cohesity Agent (DataAgent) is installed on source workloads to enable
application-consistent protection (SQL, Oracle, Exchange) and granular recovery, providing
deeper integration than agentless methods.
7. Cohesity DataProtect supports agentless backup of VMware VMs using which VMware
technology?
A) VMware SRM (Site Recovery Manager) B) VMware Changed Block Tracking (CBT) via
vSphere APIs for Data Protection (VADP) C) VMware vSAN replication D) VMware NSX data
path integration
B) VMware Changed Block Tracking (CBT) via vSphere APIs for Data Protection (VADP)
(correct answer)
Rationale: Cohesity uses VMware's VADP framework with Changed Block Tracking (CBT) to
perform agentless, incremental-forever backups of VMware VMs, tracking only changed blocks
since the last backup.
8. What is a "Protection Policy" in Cohesity and what does it define?
A) A security policy controlling administrative access to the cluster B) A set of rules defining
backup frequency, retention duration, replication targets, and archival settings applied to
Protection Groups C) A network policy controlling backup traffic routing D) A hardware policy
controlling node resource allocation
B) A set of rules defining backup frequency, retention duration, replication targets, and
archival settings applied to Protection Groups (correct answer)
Rationale: A Protection Policy in Cohesity defines all data protection parameters — backup
schedule (frequency, window), local retention, replication targets and retention, and cloud
archive settings — applied consistently to all sources in assigned Protection Groups.
9. What does "incremental-forever" backup mean in the context of Cohesity DataProtect?
A) A backup approach requiring a new full backup every month B) A backup methodology
where a single initial full backup is taken, followed by continuous incremental backups that
capture only changed data — Cohesity synthesizes virtual full backups on demand without re-
, reading source data C) An approach where every backup job creates a new full copy of the data
D) A backup that runs continuously without a defined schedule
B) A backup methodology where a single initial full backup is taken, followed by
continuous incremental backups — Cohesity synthesizes virtual full backups on demand
without re-reading source data (correct answer)
Rationale: Cohesity's incremental-forever approach eliminates repeated full backups by taking
one initial full, then storing only changed data. Full restore points are synthesized from the full
plus accumulated incrementals without additional source I/O.
10. What is a "Storage Domain" (previously called a "View Box") in Cohesity?
A) A dedicated physical storage enclosure attached to the cluster B) A logical partition within
the Cohesity cluster that provides namespace isolation, deduplication domains, and storage
policy settings for backup data C) A cloud storage bucket used for archival D) A network share
used for backup staging
B) A logical partition within the Cohesity cluster providing namespace isolation,
deduplication domains, and storage policy settings (correct answer)
Rationale: A Storage Domain (View Box) is a logical storage container within Cohesity that
partitions the cluster storage, provides a deduplication domain boundary, and applies storage
policies (compression, encryption) to backup data.
11. Which of the following BEST describes Cohesity's approach to deduplication?
A) Post-process deduplication performed weekly in batch mode B) Inline, global, variable-length
deduplication performed across all data in a Storage Domain in real time as data is ingested C)
Fixed-block deduplication performed per individual backup job D) Source-side deduplication
only, performed on the agent before transmission
B) Inline, global, variable-length deduplication performed across all data in a Storage
Domain in real time as data is ingested (correct answer)
Rationale: Cohesity performs inline, global deduplication using variable-length chunking across
all data within a Storage Domain as it arrives, achieving higher reduction ratios than fixed-
block or post-process deduplication.
12. What is the purpose of "Cohesity Helios"?
DATAPROTECT EXAM | 250 Advanced-Level
Multiple Choice Questions with Answers & Rationales
| latest update | 2026 update | instant download
1. What is the primary architectural model underlying Cohesity DataProtect?
A) A traditional backup server with dedicated tape libraries B) A hyperconverged secondary
storage platform that consolidates backup, recovery, and data management on a distributed scale-
out cluster C) A cloud-only backup solution requiring no on-premises hardware D) A SAN-
based backup appliance with deduplicated storage pools
B) A hyperconverged secondary storage platform that consolidates backup, recovery, and
data management on a distributed scale-out cluster (correct answer)
Rationale: Cohesity DataProtect is built on a hyperconverged secondary storage architecture —
combining compute, storage, and networking in a scale-out cluster that eliminates backup silos
and consolidates data protection workloads.
2. In Cohesity's cluster architecture, what is the minimum number of nodes required to
form a production cluster?
A) 1 B) 2 C) 3 D) 5
C) 3 (correct answer)
Rationale: A Cohesity production cluster requires a minimum of 3 nodes to achieve a quorum,
provide fault tolerance, and support the distributed metadata and data storage services that
underpin the platform.
3. What is a "Protection Group" in Cohesity DataProtect?
A) A collection of Cohesity nodes grouped for load balancing B) A logical grouping of source
objects (VMs, databases, files) that share the same protection policy, schedule, and storage
domain C) A set of cloud archive targets grouped by geographic region D) A cluster of physical
agents deployed on source hosts
,B) A logical grouping of source objects that share the same protection policy, schedule, and
storage domain (correct answer)
Rationale: A Protection Group in Cohesity is the core protection unit — a collection of sources
(VMs, databases, volumes) configured with a shared policy defining schedule, retention, and
replication settings.
4. Which Cohesity component is responsible for orchestrating backup jobs, managing
policies, and providing the management interface?
A) Cohesity DataAgent B) Cohesity Iris (Management UI and API) C) Cohesity SpanFS D)
Cohesity Helios
B) Cohesity Iris (Management UI and API) (correct answer)
Rationale: Cohesity Iris is the unified management interface (web UI and REST API) through
which administrators configure protection policies, monitor jobs, manage storage, and
orchestrate all DataProtect operations.
5. What is "SpanFS" in the Cohesity architecture?
A) A network protocol for connecting to cloud storage B) Cohesity's distributed file system that
spans all nodes in the cluster, providing a single namespace for all backup data C) A SAN
storage protocol used for block-level backups D) A replication protocol for sending data to
remote clusters
B) Cohesity's distributed file system that spans all nodes in the cluster, providing a single
namespace for all backup data (correct answer)
Rationale: SpanFS is Cohesity's purpose-built distributed file system that aggregates storage
across all cluster nodes into a single logical pool with a unified namespace, enabling scalability
and resilience.
6. What is the function of the Cohesity "DataAgent" (also called the Cohesity Agent)?
A) The primary cluster management service running on every node B) A lightweight software
component installed on physical servers or VMs to enable application-consistent backup and
granular recovery of databases and files C) A hardware component embedded in each Cohesity
node D) A cloud connector that authenticates Cohesity to cloud storage providers
,B) A lightweight software component installed on physical servers or VMs to enable
application-consistent backup and granular recovery (correct answer)
Rationale: The Cohesity Agent (DataAgent) is installed on source workloads to enable
application-consistent protection (SQL, Oracle, Exchange) and granular recovery, providing
deeper integration than agentless methods.
7. Cohesity DataProtect supports agentless backup of VMware VMs using which VMware
technology?
A) VMware SRM (Site Recovery Manager) B) VMware Changed Block Tracking (CBT) via
vSphere APIs for Data Protection (VADP) C) VMware vSAN replication D) VMware NSX data
path integration
B) VMware Changed Block Tracking (CBT) via vSphere APIs for Data Protection (VADP)
(correct answer)
Rationale: Cohesity uses VMware's VADP framework with Changed Block Tracking (CBT) to
perform agentless, incremental-forever backups of VMware VMs, tracking only changed blocks
since the last backup.
8. What is a "Protection Policy" in Cohesity and what does it define?
A) A security policy controlling administrative access to the cluster B) A set of rules defining
backup frequency, retention duration, replication targets, and archival settings applied to
Protection Groups C) A network policy controlling backup traffic routing D) A hardware policy
controlling node resource allocation
B) A set of rules defining backup frequency, retention duration, replication targets, and
archival settings applied to Protection Groups (correct answer)
Rationale: A Protection Policy in Cohesity defines all data protection parameters — backup
schedule (frequency, window), local retention, replication targets and retention, and cloud
archive settings — applied consistently to all sources in assigned Protection Groups.
9. What does "incremental-forever" backup mean in the context of Cohesity DataProtect?
A) A backup approach requiring a new full backup every month B) A backup methodology
where a single initial full backup is taken, followed by continuous incremental backups that
capture only changed data — Cohesity synthesizes virtual full backups on demand without re-
, reading source data C) An approach where every backup job creates a new full copy of the data
D) A backup that runs continuously without a defined schedule
B) A backup methodology where a single initial full backup is taken, followed by
continuous incremental backups — Cohesity synthesizes virtual full backups on demand
without re-reading source data (correct answer)
Rationale: Cohesity's incremental-forever approach eliminates repeated full backups by taking
one initial full, then storing only changed data. Full restore points are synthesized from the full
plus accumulated incrementals without additional source I/O.
10. What is a "Storage Domain" (previously called a "View Box") in Cohesity?
A) A dedicated physical storage enclosure attached to the cluster B) A logical partition within
the Cohesity cluster that provides namespace isolation, deduplication domains, and storage
policy settings for backup data C) A cloud storage bucket used for archival D) A network share
used for backup staging
B) A logical partition within the Cohesity cluster providing namespace isolation,
deduplication domains, and storage policy settings (correct answer)
Rationale: A Storage Domain (View Box) is a logical storage container within Cohesity that
partitions the cluster storage, provides a deduplication domain boundary, and applies storage
policies (compression, encryption) to backup data.
11. Which of the following BEST describes Cohesity's approach to deduplication?
A) Post-process deduplication performed weekly in batch mode B) Inline, global, variable-length
deduplication performed across all data in a Storage Domain in real time as data is ingested C)
Fixed-block deduplication performed per individual backup job D) Source-side deduplication
only, performed on the agent before transmission
B) Inline, global, variable-length deduplication performed across all data in a Storage
Domain in real time as data is ingested (correct answer)
Rationale: Cohesity performs inline, global deduplication using variable-length chunking across
all data within a Storage Domain as it arrives, achieving higher reduction ratios than fixed-
block or post-process deduplication.
12. What is the purpose of "Cohesity Helios"?
