COH100 – Cohesity Protection Associate – DataProtect Practice Exam
COH100 – COHESITY PROTECTION ASSOCIATE - DATAPROTECT |
EXAM QUESTIONS AND CORRECT ANSWERS | LATEST 2026/2027
COHESITY CERTIFIED PROTECTION ASSOCIATE – DATAPROTECT
(COH100)
1. Which Cohesity file system provides the distributed, scale-out
storage layer underneath DataProtect?
A. SnapTree
B. VMFS
C. ZFS
D. SpanFS
ANSWER : D. SpanFS
SpanFS is the web-scale distributed file system that stores and manages
data across all nodes in the cluster.
2. Which Cohesity technology allows unlimited snapshots without
performance degradation by using a B+ tree metadata structure?
A. CloudTier
B. Helios
C. SpanFS
D. SnapTree
ANSWER : D. SnapTree
SnapTree uses a distributed B+ tree so every snapshot is a fully hydrated
point-in-time copy without long chains.
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, COH100 – Cohesity Protection Associate – DataProtect Practice Exam
3. What is the SaaS-based management plane used to manage multiple
Cohesity clusters from a single console?
A. Magneto
B. Bridge
C. Helios
D. Iris
ANSWER : C. Helios
Helios provides centralized, multi-cluster management, reporting and
global search from a single interface.
4. What is the name of the web-based user interface hosted on each
Cohesity cluster?
A. Cohesity CLI only
B. Cohesity Dashboard (cluster UI)
C. vSphere Client
D. Helios Mobile
ANSWER : B. Cohesity Dashboard (cluster UI)
Each cluster serves its own HTML5 management UI accessible through a
browser at the cluster address.
5. What is the minimum number of nodes required for a standard
physical Cohesity cluster to provide resiliency?
A. Five nodes
B. Two nodes
C. One node
D. Three nodes
ANSWER : D. Three nodes
A standard physical cluster begins at three nodes so data and metadata
can survive a node failure.
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, COH100 – Cohesity Protection Associate – DataProtect Practice Exam
6. Which feature allows a Cohesity cluster to grow by simply adding
nodes without disrupting operations?
A. Non-disruptive scale-out
B. Forklift upgrade
C. Manual LUN expansion
D. Scale-up controller replacement
ANSWER : A. Non-disruptive scale-out
Nodes join the cluster online and capacity and performance increase
linearly without downtime.
7. What is a Cohesity Virtual Edition primarily used for?
A. Acting as a vCenter replacement
B. Running Cohesity software as a VM, often at remote or branch offices
C. Replacing the Helios portal
D. Encrypting physical tapes
ANSWER : B. Running Cohesity software as a VM, often at remote or
branch offices
Virtual Edition delivers Cohesity as a single VM, commonly used for ROBO
backup and replication back to a core cluster.
8. Which Cohesity deployment runs in a public cloud such as AWS or
Azure as a full cluster?
A. Tape Edition
B. Virtual Edition
C. ROBO Edition
D. Cloud Edition
ANSWER : D. Cloud Edition
Cloud Edition deploys Cohesity in public cloud for backup, replication and
DR targets.
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, COH100 – Cohesity Protection Associate – DataProtect Practice Exam
9. Which feature spreads client connections across cluster nodes using
multiple virtual IP addresses?
A. VIPs with DNS round robin
B. Single static node IP
C. NIC teaming on the source
D. Port mirroring
ANSWER : A. VIPs with DNS round robin
Assigning VIPs and a DNS record that round-robins them distributes
connections across all nodes.
10. What type of deduplication on Cohesity uses variable-length
chunking?
A. Sliding window variable-length deduplication
B. Tape-based deduplication
C. Fixed 4 KB block deduplication
D. File-level single instancing only
ANSWER : A. Sliding window variable-length deduplication
Variable-length chunking finds duplicate data even when content shifts,
improving dedup ratios.
11. Which deduplication mode processes data as it is written, before it
lands on disk?
A. Post-process deduplication
B. Inline deduplication
C. Scheduled compaction
D. Deferred tiering
ANSWER : B. Inline deduplication
Inline deduplication reduces data on ingest so less capacity is consumed
immediately.
Page 4 of 66
COH100 – COHESITY PROTECTION ASSOCIATE - DATAPROTECT |
EXAM QUESTIONS AND CORRECT ANSWERS | LATEST 2026/2027
COHESITY CERTIFIED PROTECTION ASSOCIATE – DATAPROTECT
(COH100)
1. Which Cohesity file system provides the distributed, scale-out
storage layer underneath DataProtect?
A. SnapTree
B. VMFS
C. ZFS
D. SpanFS
ANSWER : D. SpanFS
SpanFS is the web-scale distributed file system that stores and manages
data across all nodes in the cluster.
2. Which Cohesity technology allows unlimited snapshots without
performance degradation by using a B+ tree metadata structure?
A. CloudTier
B. Helios
C. SpanFS
D. SnapTree
ANSWER : D. SnapTree
SnapTree uses a distributed B+ tree so every snapshot is a fully hydrated
point-in-time copy without long chains.
Page 1 of 66
, COH100 – Cohesity Protection Associate – DataProtect Practice Exam
3. What is the SaaS-based management plane used to manage multiple
Cohesity clusters from a single console?
A. Magneto
B. Bridge
C. Helios
D. Iris
ANSWER : C. Helios
Helios provides centralized, multi-cluster management, reporting and
global search from a single interface.
4. What is the name of the web-based user interface hosted on each
Cohesity cluster?
A. Cohesity CLI only
B. Cohesity Dashboard (cluster UI)
C. vSphere Client
D. Helios Mobile
ANSWER : B. Cohesity Dashboard (cluster UI)
Each cluster serves its own HTML5 management UI accessible through a
browser at the cluster address.
5. What is the minimum number of nodes required for a standard
physical Cohesity cluster to provide resiliency?
A. Five nodes
B. Two nodes
C. One node
D. Three nodes
ANSWER : D. Three nodes
A standard physical cluster begins at three nodes so data and metadata
can survive a node failure.
Page 2 of 66
, COH100 – Cohesity Protection Associate – DataProtect Practice Exam
6. Which feature allows a Cohesity cluster to grow by simply adding
nodes without disrupting operations?
A. Non-disruptive scale-out
B. Forklift upgrade
C. Manual LUN expansion
D. Scale-up controller replacement
ANSWER : A. Non-disruptive scale-out
Nodes join the cluster online and capacity and performance increase
linearly without downtime.
7. What is a Cohesity Virtual Edition primarily used for?
A. Acting as a vCenter replacement
B. Running Cohesity software as a VM, often at remote or branch offices
C. Replacing the Helios portal
D. Encrypting physical tapes
ANSWER : B. Running Cohesity software as a VM, often at remote or
branch offices
Virtual Edition delivers Cohesity as a single VM, commonly used for ROBO
backup and replication back to a core cluster.
8. Which Cohesity deployment runs in a public cloud such as AWS or
Azure as a full cluster?
A. Tape Edition
B. Virtual Edition
C. ROBO Edition
D. Cloud Edition
ANSWER : D. Cloud Edition
Cloud Edition deploys Cohesity in public cloud for backup, replication and
DR targets.
Page 3 of 66
, COH100 – Cohesity Protection Associate – DataProtect Practice Exam
9. Which feature spreads client connections across cluster nodes using
multiple virtual IP addresses?
A. VIPs with DNS round robin
B. Single static node IP
C. NIC teaming on the source
D. Port mirroring
ANSWER : A. VIPs with DNS round robin
Assigning VIPs and a DNS record that round-robins them distributes
connections across all nodes.
10. What type of deduplication on Cohesity uses variable-length
chunking?
A. Sliding window variable-length deduplication
B. Tape-based deduplication
C. Fixed 4 KB block deduplication
D. File-level single instancing only
ANSWER : A. Sliding window variable-length deduplication
Variable-length chunking finds duplicate data even when content shifts,
improving dedup ratios.
11. Which deduplication mode processes data as it is written, before it
lands on disk?
A. Post-process deduplication
B. Inline deduplication
C. Scheduled compaction
D. Deferred tiering
ANSWER : B. Inline deduplication
Inline deduplication reduces data on ingest so less capacity is consumed
immediately.
Page 4 of 66
