SK0-005 Practice Test 30 — 15 Questions

Question 1

A server administrator is troubleshooting a server that fails to boot after a power outage. The server powers on, but no video is displayed, and the administrator hears a series of beeps. Which of the following should the administrator check FIRST?

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

The memory modules. Beep codes during POST are a diagnostic tool used by motherboards to indicate hardware failures. Memory errors are a common cause, especially after a power outage that may have caused a surge or physical dislodging. The administrator should consult the motherboard manual for the beep code meaning and then reseat or replace memory modules. Other components like PSU, video card, or hard drive are less likely to produce beep codes in this scenario.

Answer

The video card

Answer

The power supply unit

Answer

The hard drive

Question 2

A server administrator manages a Linux server running a custom application. The application must start automatically at boot and be restarted if it crashes. The administrator creates a systemd unit file at /etc/systemd/system/myapp.service. After running systemctl daemon-reload and systemctl start myapp, the application runs successfully. However, after a reboot, the application does not start. Which command should the administrator run to resolve this?

Accepted Answer

systemctl enable myapp. To make a systemd service start automatically at boot, the administrator must enable it using systemctl enable. This creates the necessary symbolic links in the systemd target directories. Starting, reloading, or reloading the daemon does not configure the service for automatic startup, so enabling is the correct action.

Answer

systemctl daemon-reload

Answer

systemctl start myapp

Answer

systemctl reload myapp

Question 3

A server administrator is troubleshooting a server that fails to boot after a power outage. The server powers on, but no video is displayed, and the administrator hears a series of beeps. Which of the following should the administrator check FIRST?

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

Resource Monitor. Resource Monitor provides real-time, per-process details on memory usage and hard page faults, which directly indicate paging activity. By examining the Memory tab and sorting by hard faults, the administrator can identify the process causing excessive paging. Task Manager lacks this granularity, Performance Monitor requires counter setup, and Event Viewer does not show real-time paging data.

Answer

Performance Monitor

Answer

Event Viewer

Answer

Task Manager

Question 4

A technician is tasked with installing a new 2U server into a rack that currently has two servers. The rack is located in a small server room with limited airflow. The technician notices that the rack does not have a blanking panel installed above the new server. What is the most likely consequence of not installing the blanking panel?

Accepted Answer

Hot air recirculation causing overheating of components. Blank server rack units allow hot exhaust air to recirculate to the front intake, especially in confined spaces with limited airflow. This raises intake temperatures and can cause overheating. Blanking panels are inexpensive and easy to install; they block these gaps and ensure that cold air from the front is drawn through the servers and exhausted out the back. This maintains proper cooling and prevents thermal issues. Therefore, the most likely consequence of omitting the blanking panel is hot air recirculation and overheating.

Answer

Increased cooling efficiency due to better air circulation

Answer

Electromagnetic interference affecting network signals

Answer

Increased power consumption due to higher fan speeds

Question 5

A server administrator is configuring a new server with four 10GbE network interfaces. The server will host a high-traffic web application that requires maximum throughput and redundancy. Which of the following configurations should the administrator implement?

Accepted Answer

Configure all four interfaces in an active-active NIC team using LACP (802.3ad).. LACP (802.3ad) allows multiple network interfaces to be aggregated into a single logical link, providing both increased throughput and redundancy. Active-active mode ensures all interfaces are utilized, maximizing bandwidth. This is ideal for a high-traffic web application. Other options either do not increase throughput or lack the same level of redundancy and performance.

Answer

Enable load balancing using ALB (Adaptive Load Balancing) without switch configuration.

Answer

Set up NIC teaming in active-passive mode using two interfaces, leaving the other two as standby.

Answer

Assign each interface to a separate VLAN to distribute traffic across multiple subnets.

Question 6

A small business runs a single file server that stores contracts and financial records. The owner wants an affordable way to recover individual files that users accidentally delete or overwrite, with the shortest possible recovery time. Which solution BEST fits this requirement?

Accepted Answer

Enable Volume Shadow Copy Service snapshots on the file server so users can restore previous versions themselves.. The need is fast, low-cost recovery of individual files after accidental deletion or overwrite. Volume Shadow Copy Service keeps scheduled point-in-time snapshots on the server and exposes them through Previous Versions, so a user can restore a file in moments without administrator help. Nightly backups or cloud replication restore only to the last run and take longer, while RAID addresses disk failure rather than logical deletion.

Answer

Replicate the file server to a cloud VM every night and restore files from the cloud copy when needed.

Answer

Implement a RAID 5 array across three disks so that deleted files can be recovered from parity.

Answer

Configure a nightly full backup to an external USB drive that is stored in the office safe.

Question 7

A server administrator is troubleshooting a server that fails to boot after a power outage. The server powers on, but no video is displayed, and the administrator hears a series of beeps. Which of the following should the administrator check FIRST?

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

The RAID controller's battery backup unit (BBU) has failed, causing the controller to switch to write-through mode.. A failed battery backup unit on a RAID controller forces the controller to disable write-back caching, switching to write-through mode. This ensures data integrity but severely impacts write performance because each write must be written directly to disk. The scenario's symptom of low write throughput during peak hours aligns with this behavior. Other options like fragmentation or rebuild would not specifically target write performance or would present additional symptoms.

Answer

The RAID array is rebuilding, consuming disk I/O resources.

Answer

The server's power supply is insufficient, causing the disks to spin down intermittently.

Answer

The file system is fragmented, causing excessive seek times.

Question 8

A server administrator is setting up a new Windows Server 2022 server that will host a database. The server has four 1 TB NVMe drives. The administrator wants to maximize performance and provide redundancy against a single drive failure. Which RAID level should the administrator implement?

Accepted Answer

RAID 10. RAID 10 offers the best combination of performance and redundancy for a database server. It mirrors data across pairs of drives and stripes across those pairs, delivering fast reads and writes while tolerating drive failures. RAID 0 lacks redundancy, RAID 5 has write penalties, and RAID 6 adds further parity overhead, making RAID 10 the optimal choice.

Answer

RAID 5

Answer

RAID 0

Answer

RAID 6

Question 9

A datacenter administrator must protect a rack of dual-power-supply servers against a single PDU failure. The rack currently has two rack PDUs, each fed from a separate upstream branch circuit, and each server has both power supplies connected. The administrator wants to confirm that the configuration meets the intended redundancy level before adding more servers. Which action should the administrator take?

Accepted Answer

Connect one power supply from each server to PDU A and the other power supply to PDU B, then verify that each PDU is fed from a different upstream branch circuit.. True rack-level power redundancy requires two independent paths from the server to the upstream power source. Each dual-corded server should have one supply on each PDU, and those PDUs must be fed from separate branch circuits. Otherwise a single breaker or feed failure can still interrupt both power supplies and cause an outage.

Answer

Connect only one power supply from each server and label the unused supply as reserved for future capacity, because dual-corded servers do not need both supplies connected.

Answer

Connect both power supplies from each server to the same PDU so that the load is balanced across one device, and rely on the second PDU as a cold spare.

Answer

Connect one power supply from each server to PDU A and the other to PDU B, but leave both PDUs connected to the same upstream branch circuit to simplify cabling.

Question 10

A server administrator is troubleshooting a server that fails to boot after a power outage. The server powers on, but no video is displayed, and the administrator hears a series of beeps. Which of the following should the administrator check FIRST?

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

A faulty or improperly terminated network cable.. CRC and frame errors are indicators of physical layer issues, most commonly faulty cabling or connectors. The administrator should inspect and replace the network cable, and verify that the connectors are properly terminated. This should eliminate the errors and restore stable connectivity.

Answer

An incorrect IP address configuration on the server.

Answer

The network switch port is configured for the wrong VLAN.

Answer

A duplex mismatch between the server NIC and the switch port.

Question 11

A server administrator is troubleshooting a Windows Server 2019 host that runs a line-of-business application. Users report the application is extremely slow during business hours, but performance is normal at night. Performance Monitor shows high 'Avg. Disk sec/Read' on the data volume and a disk queue length consistently above 2. The volume is a single NTFS partition on a RAID 5 array of 7.2K RPM SATA drives. Which of the following is the MOST likely cause of the slow performance?

Accepted Answer

The disk subsystem is experiencing an I/O bottleneck due to insufficient IOPS for the workload.. The performance counters show the disk subsystem is saturated: high read latency and a queue length above 2 mean requests are waiting. A RAID 5 array of 7.2K RPM SATA drives provides limited random IOPS, and the business-hours-only pattern matches peak user load. The correct remedy is to increase disk performance, such as adding spindles or moving to faster media.

Answer

A network bottleneck is delaying storage I/O to the application.

Answer

The RAID 5 array has a failed drive and is running in degraded mode.

Answer

The server's memory is insufficient and causing excessive paging to disk.

Question 12

A server administrator is troubleshooting a server that fails to boot after a power outage. The server powers on, but no video is displayed, and the administrator hears a series of beeps. Which of the following should the administrator check FIRST?

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

The higher-RPM drives generate more heat, and the BMC is ramping fans to protect them based on drive temperature sensors. Higher-RPM drives run hotter, and the baseboard management controller raises fan speed based on the hottest monitored sensor, including per-drive temperatures reported through the backplane. Normal inlet readings do not rule this out. Firmware profile drift, a failing backplane, or humidity effects do not fit the timing or mechanism as well as the direct thermal consequence of the drive upgrade.

Answer

The server's ambient humidity is too low, causing static buildup that interferes with fan control signals

Answer

The fan profile was reset to a performance curve during a recent firmware update and must be returned to optimal

Answer

The passive backplane is failing and reporting false temperature readings to the BMC

Question 13

A technician is preparing to install a new server into a rack. The server will host a critical application and requires high availability. The technician needs to ensure that the server's power configuration supports redundancy. Which of the following should the technician do? (Choose two.)

Accepted Answer

Connect each power supply to a different UPS.. To ensure power redundancy for a high-availability server, each power supply should be connected to a different PDU and a different UPS. This eliminates single points of failure in the power distribution path. Connecting both PSUs to the same PDU or UPS, even on different circuits or outlets, still leaves a single point of failure that could bring down the server.

Answer

Connect one power supply to a UPS and the other directly to a wall outlet.

Answer

Connect both power supplies to the same UPS but different outlets.

Answer

Connect both power supplies to the same PDU but different circuits.

Question 14

A server administrator is configuring a new file server that will store sensitive financial documents. The security policy requires that data be encrypted at rest and that the encryption keys be protected by the server's TPM. Which of the following should the administrator implement?

Accepted Answer

BitLocker Drive Encryption. The policy requires encryption at rest with keys protected by TPM. BitLocker provides full volume encryption and can seal keys to the TPM, ensuring the drive contents are inaccessible without proper authentication. IPsec, SMB signing, and NTFS permissions address network security or access control but do not encrypt data on the disk.

Answer

NTFS permissions

Answer

IPsec transport mode

Answer

SMB signing

Question 15

A server administrator is replacing a failed hard drive in a RAID 1 array on a production server. The server supports hot-swap drives. The administrator removes the failed drive and inserts a new drive of the same model and capacity. Which of the following should the administrator do NEXT to ensure the array is rebuilt correctly?

Accepted Answer

Verify that the RAID controller automatically starts the rebuild process.. After replacing a failed drive in a RAID 1 array with a hot-swap drive, the RAID controller typically starts rebuilding the array automatically. The administrator should verify the rebuild status via the RAID management utility. If it does not start, manual intervention may be required. Rebooting or initializing the drive via the OS is unnecessary and can cause issues.

Answer

Manually initialize the new drive using the operating system's disk management.

Answer

Reboot the server to force the RAID controller to recognize the new drive.

Answer

Assign the new drive as a global hot spare to trigger the rebuild.