1
CompTIA Server+ (SK0-005)
Advanced Certification Practice
Examination: Comprehensive 150-
Question Domain-Aligned
Assessment for Server
Infrastructure Professionals a
well detailed one
written and graded A+
upgraded
, 2
Question 1
A data center administrator is deploying 20 new 2U rackmount servers in a single cabinet. The
facility uses a raised-floor cooling system with hot-aisle/cold-aisle containment. Each server
draws 800W at full load and has front-to-rear airflow. The cabinet has a maximum power
capacity of 12kW and cooling capacity of 15,000 BTUs per hour. Which of the following is the
MOST significant constraint the administrator must address before completing the deployment?
A. The total power draw exceeds the cabinet's power capacity
B. The number of servers exceeds the cabinet's U-space capacity
C. The cooling capacity is insufficient for the total heat load
D. The front-to-rear airflow pattern is incompatible with the raised-floor design
-” detailed answer 100 % correct :-”A
Rationale: The total power draw is 20 × 800W = 16,000W (16kW), which exceeds the cabinet's
12kW capacity. While cooling is a concern—16kW × 3.412 = 54,592 BTUs/hour, far exceeding
15,000 BTUs—the immediate constraint is power capacity. U-space (20 × 2U = 40U) fits within a
standard 42U cabinet. Front-to-rear airflow is actually compatible with raised-floor cold-aisle
configurations.
Question 2
A server administrator is configuring a new RAID array for a database server that requires high
read performance and fault tolerance with minimal write penalty. The server has six 2TB NVMe
drives available. Which RAID level provides the optimal balance of read performance, fault
tolerance, and usable capacity for this scenario?
A. RAID 0 with all six drives
B. RAID 5 with all six drives
C. RAID 6 with all six drives
D. RAID 10 with four drives
-” detailed answer 100 % correct :-”B
Rationale: RAID 5 with six drives provides striping with distributed parity, offering excellent read
performance, tolerance of one drive failure, and usable capacity of (n−1) × capacity = 10TB.
RAID 0 has no fault tolerance. RAID 6 provides double parity but has a higher write penalty and
lower usable capacity. RAID 10 requires an even number of drives; using four of six drives
wastes capacity.
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Question 3
An organization is implementing out-of-band management for its server infrastructure. The
security team requires that management traffic be isolated from production traffic and that
administrators authenticate using hardware-based tokens. Which of the following technologies
BEST meets these requirements?
A. SSH over the production network with software tokens
B. iDRAC/BMC with dedicated management VLAN and smart card authentication
C. RDP over a VPN connection with password authentication
D. SNMPv3 with community strings over an isolated network
-” detailed answer 100 % correct :-”B
Rationale: Integrated Dell Remote Access Controller (iDRAC) or Baseboard Management
Controller (BMC) provides out-of-band management independent of the host OS. A dedicated
management VLAN isolates traffic from production networks, and smart card authentication
satisfies hardware-based token requirements. SSH/RDP over production networks are in-band
management. SNMPv3 community strings are not hardware-based tokens.
Question 4
A server administrator needs to perform a firmware upgrade on a critical production server's
RAID controller. The server hosts a mission-critical database and cannot be taken offline during
business hours. The upgrade requires a system reboot to take effect. Which of the following
approaches represents the BEST practice for this situation?
A. Perform the upgrade immediately during peak hours using the out-of-band management
interface
B. Schedule the upgrade during the next scheduled maintenance window and verify backups
first
C. Upgrade the firmware without rebooting by using the controller's online upgrade feature
D. Replace the RAID controller with a new one that has the latest firmware pre-installed
-” detailed answer 100 % correct :-”B
Rationale: Firmware upgrades that require reboots should be performed during scheduled
maintenance windows. Best practice requires verifying backups before any firmware upgrade to
protect against corruption or failure. Performing upgrades during peak hours risks unplanned
downtime. Not all controllers support online upgrades without reboots. Replacing the controller
introduces additional complexity and cost.
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Question 5
A server is exhibiting intermittent overheating issues. The administrator has verified that all fans
are operational, the ambient temperature is within specifications, and the server is not under
abnormal load. Upon inspection, the administrator notices that dust filters are clogged and
several air vents are obstructed by cables. Which of the following is the MOST appropriate next
step?
A. Replace all system fans with higher-CFM models
B. Move the server to a different rack with better airflow
C. Clean the dust filters and reroute cables to clear air vents
D. Lower the ambient temperature by 5°F
-” detailed answer 100 % correct :-”C
Rationale: Clogged dust filters restrict airflow and obstructed vents prevent proper cooling. The
most appropriate and cost-effective solution is to clean the filters and reroute cables to restore
proper airflow. Replacing fans may not address the root cause. Moving the server is
unnecessary and disruptive. Lowering ambient temperature treats a symptom rather than the
cause.
Question 6
An administrator is planning storage capacity for a new file server that will host 50,000 files
averaging 2MB each. The server will use RAID 5 with four 4TB drives. The administrator must
account for 15% annual data growth and maintain at least 20% free space. What is the
approximate number of months before the array reaches 80% capacity utilization?
A. 6 months
B. 12 months
C. 18 months
D. 24 months
-” detailed answer 100 % correct :-”C
Rationale: Initial data = 50,000 × 2MB = 100GB. RAID 5 usable capacity = (4−1) × 4TB = 12TB.
80% utilization = 9.6TB. Available capacity = 9.6TB − 0.1TB = 9.5TB. At 15% annual growth
(1.25% monthly), solving 0.1TB × (1.0125)^n = 9.6TB gives n ≈ 18 months.
CompTIA Server+ (SK0-005)
Advanced Certification Practice
Examination: Comprehensive 150-
Question Domain-Aligned
Assessment for Server
Infrastructure Professionals a
well detailed one
written and graded A+
upgraded
, 2
Question 1
A data center administrator is deploying 20 new 2U rackmount servers in a single cabinet. The
facility uses a raised-floor cooling system with hot-aisle/cold-aisle containment. Each server
draws 800W at full load and has front-to-rear airflow. The cabinet has a maximum power
capacity of 12kW and cooling capacity of 15,000 BTUs per hour. Which of the following is the
MOST significant constraint the administrator must address before completing the deployment?
A. The total power draw exceeds the cabinet's power capacity
B. The number of servers exceeds the cabinet's U-space capacity
C. The cooling capacity is insufficient for the total heat load
D. The front-to-rear airflow pattern is incompatible with the raised-floor design
-” detailed answer 100 % correct :-”A
Rationale: The total power draw is 20 × 800W = 16,000W (16kW), which exceeds the cabinet's
12kW capacity. While cooling is a concern—16kW × 3.412 = 54,592 BTUs/hour, far exceeding
15,000 BTUs—the immediate constraint is power capacity. U-space (20 × 2U = 40U) fits within a
standard 42U cabinet. Front-to-rear airflow is actually compatible with raised-floor cold-aisle
configurations.
Question 2
A server administrator is configuring a new RAID array for a database server that requires high
read performance and fault tolerance with minimal write penalty. The server has six 2TB NVMe
drives available. Which RAID level provides the optimal balance of read performance, fault
tolerance, and usable capacity for this scenario?
A. RAID 0 with all six drives
B. RAID 5 with all six drives
C. RAID 6 with all six drives
D. RAID 10 with four drives
-” detailed answer 100 % correct :-”B
Rationale: RAID 5 with six drives provides striping with distributed parity, offering excellent read
performance, tolerance of one drive failure, and usable capacity of (n−1) × capacity = 10TB.
RAID 0 has no fault tolerance. RAID 6 provides double parity but has a higher write penalty and
lower usable capacity. RAID 10 requires an even number of drives; using four of six drives
wastes capacity.
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Question 3
An organization is implementing out-of-band management for its server infrastructure. The
security team requires that management traffic be isolated from production traffic and that
administrators authenticate using hardware-based tokens. Which of the following technologies
BEST meets these requirements?
A. SSH over the production network with software tokens
B. iDRAC/BMC with dedicated management VLAN and smart card authentication
C. RDP over a VPN connection with password authentication
D. SNMPv3 with community strings over an isolated network
-” detailed answer 100 % correct :-”B
Rationale: Integrated Dell Remote Access Controller (iDRAC) or Baseboard Management
Controller (BMC) provides out-of-band management independent of the host OS. A dedicated
management VLAN isolates traffic from production networks, and smart card authentication
satisfies hardware-based token requirements. SSH/RDP over production networks are in-band
management. SNMPv3 community strings are not hardware-based tokens.
Question 4
A server administrator needs to perform a firmware upgrade on a critical production server's
RAID controller. The server hosts a mission-critical database and cannot be taken offline during
business hours. The upgrade requires a system reboot to take effect. Which of the following
approaches represents the BEST practice for this situation?
A. Perform the upgrade immediately during peak hours using the out-of-band management
interface
B. Schedule the upgrade during the next scheduled maintenance window and verify backups
first
C. Upgrade the firmware without rebooting by using the controller's online upgrade feature
D. Replace the RAID controller with a new one that has the latest firmware pre-installed
-” detailed answer 100 % correct :-”B
Rationale: Firmware upgrades that require reboots should be performed during scheduled
maintenance windows. Best practice requires verifying backups before any firmware upgrade to
protect against corruption or failure. Performing upgrades during peak hours risks unplanned
downtime. Not all controllers support online upgrades without reboots. Replacing the controller
introduces additional complexity and cost.
, 4
Question 5
A server is exhibiting intermittent overheating issues. The administrator has verified that all fans
are operational, the ambient temperature is within specifications, and the server is not under
abnormal load. Upon inspection, the administrator notices that dust filters are clogged and
several air vents are obstructed by cables. Which of the following is the MOST appropriate next
step?
A. Replace all system fans with higher-CFM models
B. Move the server to a different rack with better airflow
C. Clean the dust filters and reroute cables to clear air vents
D. Lower the ambient temperature by 5°F
-” detailed answer 100 % correct :-”C
Rationale: Clogged dust filters restrict airflow and obstructed vents prevent proper cooling. The
most appropriate and cost-effective solution is to clean the filters and reroute cables to restore
proper airflow. Replacing fans may not address the root cause. Moving the server is
unnecessary and disruptive. Lowering ambient temperature treats a symptom rather than the
cause.
Question 6
An administrator is planning storage capacity for a new file server that will host 50,000 files
averaging 2MB each. The server will use RAID 5 with four 4TB drives. The administrator must
account for 15% annual data growth and maintain at least 20% free space. What is the
approximate number of months before the array reaches 80% capacity utilization?
A. 6 months
B. 12 months
C. 18 months
D. 24 months
-” detailed answer 100 % correct :-”C
Rationale: Initial data = 50,000 × 2MB = 100GB. RAID 5 usable capacity = (4−1) × 4TB = 12TB.
80% utilization = 9.6TB. Available capacity = 9.6TB − 0.1TB = 9.5TB. At 15% annual growth
(1.25% monthly), solving 0.1TB × (1.0125)^n = 9.6TB gives n ≈ 18 months.
