View Full CompTIA Server+ SK0-005 Exam Dumps and Practice Test Dumps

 

Question 1

Which server component converts incoming electrical power into voltages suitable for internal hardware?

1. Power supply unit
2. Memory controller
3. RAID backplane
4. Cooling assembly

Correct Answer: 1

Explanation:

The power supply unit (PSU) converts incoming AC electrical power into the DC voltages required by server components such as processors, memory, storage devices, and expansion cards. Server PSUs are commonly designed with redundancy features so that a single power supply failure does not necessarily shut down the entire system. A memory controller manages communication between the processor and memory rather than supplying power. A RAID backplane provides connectivity between storage devices and the storage controller. Cooling assemblies remove heat generated by components. Understanding the role of each server component is important when diagnosing hardware failures or planning server configurations.

Question 2

A server requires two identical processors to operate together. Which motherboard feature is most directly required?

1. ECC memory support
2. Dual-socket design
3. Hot-swap capability
4. Integrated graphics

Correct Answer: 2

Explanation:

A dual-socket motherboard provides two physical processor sockets, allowing the server to accommodate two compatible CPUs. Multi-socket configurations are commonly used in enterprise servers when additional processing capacity is required. ECC memory helps detect and correct certain memory errors but does not provide another processor socket. Hot-swapping allows supported components to be replaced while the system remains operational, but it does not determine how many CPUs can be installed. Integrated graphics provides display functionality. When selecting a motherboard for multiple processors, the socket count, processor compatibility, chipset support, and required system architecture must all be considered.

Question 3

Which memory technology can detect and correct certain single-bit errors without requiring the operating system to intervene?

1. Buffered SDRAM
2. Registered DIMMs
3. ECC memory
4. Nonvolatile RAM

Correct Answer: 3

Explanation:

Error-correcting code (ECC) memory can detect and correct certain memory errors, particularly single-bit errors, through hardware-level error detection and correction mechanisms. This capability is valuable in servers because undetected memory corruption can cause application failures, crashes, or incorrect data processing. Registered DIMMs include registers that help manage electrical loading on the memory bus, but registration itself is not the same as error correction. Buffered SDRAM is a broad memory category, while nonvolatile RAM refers to memory that retains information without continuous power. Server administrators should verify that the processor and motherboard support the selected ECC memory type.

Question 4

A storage array must continue operating after one disk fails while preserving the stored data. Which RAID level provides this capability with disk mirroring?

1. RAID 0
2. RAID 6
3. RAID 10
4. RAID 1

Correct Answer: 4

Explanation:

RAID 1 provides disk mirroring by maintaining an identical copy of data on two drives. If one drive fails, the mirrored drive can continue supplying the stored information. RAID 0 uses striping without redundancy, so a single disk failure can result in data loss. RAID 6 uses dual parity and can tolerate two disk failures, while RAID 10 combines mirroring and striping and generally requires more drives. RAID 1 is therefore the direct match when the requirement specifically describes mirroring between drives. Administrators should also consider usable capacity, performance requirements, rebuild behavior, and the number of available drive bays.

Question 5

Which server form factor is designed to mount horizontally in a standardized equipment rack?

1. Rack-mount chassis
2. Tower enclosure
3. Blade module
4. Microserver case

Correct Answer: 1

Explanation:

A rack-mount chassis is specifically designed to fit into standardized equipment racks. Rack servers are commonly measured using rack units, or U sizes, which describe the vertical space they occupy. They allow organizations to install many servers in a structured cabinet or rack environment. Tower servers resemble traditional standalone computer systems and are generally designed for placement on or beside a desk or floor. Blade modules are compact server units that fit into a blade enclosure providing shared infrastructure. Microservers are smaller systems intended for lightweight workloads. Rack-mounted systems are particularly useful where space efficiency and centralized infrastructure management are important.

Question 6

Which cooling method uses a liquid medium to transfer heat away from a high-performance processor?

1. Passive heatsinking
2. Liquid cooling
3. Chassis ventilation
4. Thermal padding

Correct Answer: 2

Explanation:

Liquid cooling uses a liquid coolant to absorb heat from components and transport that heat toward a radiator or another heat-dissipation mechanism. It can be useful for systems with substantial thermal output, although server implementations vary depending on workload and design. Passive heatsinking relies primarily on a heatsink without an active fan, while chassis ventilation moves air through the server enclosure. Thermal padding provides a conductive interface between selected components and cooling surfaces but does not itself circulate coolant. When evaluating server cooling, administrators should consider heat output, airflow design, ambient temperature, maintenance requirements, and the reliability implications of the selected cooling system.

Question 7

Which interface is commonly used to connect enterprise storage devices directly to a server using serial signaling?

1. IDE ribbon interface
2. SCSI parallel bus
3. SAS connection
4. VGA display port

Correct Answer: 3

Explanation:

Serial Attached SCSI, or SAS, is an enterprise storage interface designed for reliable connection of storage devices to servers and storage systems. SAS supports features appropriate for server environments, including multiple devices, high availability configurations, and enterprise storage management capabilities. Older parallel SCSI used a shared parallel bus, while IDE was primarily associated with earlier desktop and consumer storage devices. VGA is a video interface rather than a storage connection. SAS may also be used alongside SATA devices in certain environments, depending on the controller and backplane. Understanding storage interfaces helps administrators select compatible drives, controllers, and server backplanes.

Question 8

A server must remain powered when its primary electrical source briefly fails. Which device provides short-term battery-backed power?

1. Surge suppressor
2. Power distribution unit
3. Automatic transfer switch
4. Uninterruptible power supply

Correct Answer: 4

Explanation:

An uninterruptible power supply (UPS) provides temporary battery-backed electrical power when the primary power source fails or becomes unstable. This gives servers time to continue operating during a short interruption or to shut down safely during a prolonged outage. A surge suppressor primarily protects equipment against voltage spikes. A power distribution unit distributes electrical power to connected equipment but normally does not provide battery backup. An automatic transfer switch can transfer electrical loads between power sources but is not itself a battery-based backup system. Selecting an appropriate UPS involves considering load capacity, runtime requirements, redundancy, battery health, and shutdown integration.

Question 9

Which server feature allows a failed drive to be replaced without powering down the system?

1. Hot-swappable bay
2. Static mounting bracket
3. Removable faceplate
4. Fixed drive cage

Correct Answer: 1

Explanation:

A hot-swappable drive bay allows a compatible storage device to be removed and replaced while the server remains powered, provided the server, backplane, controller, and operating environment support hot swapping. This capability is especially useful in systems designed for high availability because maintenance can occur without a complete shutdown. A static mounting bracket holds a component in place but does not provide hot-swap functionality. A removable faceplate is primarily an enclosure-access feature, while a fixed drive cage requires more traditional component replacement procedures. Administrators should verify hardware and controller support before removing a live drive.

Question 10

Which server bus technology provides high-speed communication for modern expansion devices such as network and storage adapters?

1. PCI
2. ISA
3. PCIe
4. AGP

Correct Answer: 3

Explanation:

PCI Express, commonly abbreviated PCIe, is a modern high-speed expansion bus used for devices such as network interface cards, storage controllers, graphics adapters, and specialized accelerators. PCIe uses dedicated serial links and supports different lane configurations, such as x1, x4, x8, and x16, depending on the device and platform. Traditional PCI and ISA are older bus technologies with substantially different architectures and capabilities. AGP was designed primarily for graphics acceleration and is obsolete in modern server platforms. When installing an expansion adapter, administrators should verify the required PCIe slot type, available lanes, physical dimensions, and motherboard compatibility.

Question 11

A server administrator needs centralized authentication for users accessing multiple network services. Which technology is commonly used for directory-based identity management?

1. DNS
2. LDAP
3. NTP
4. SNMP

Correct Answer: 2

Explanation:

LDAP, or Lightweight Directory Access Protocol, is commonly used to access and manage directory information, including user identities, groups, and organizational attributes. Directory services can provide centralized authentication and authorization information for multiple systems and applications. DNS resolves hostnames and other domain-related information, while NTP synchronizes system clocks. SNMP is primarily used for monitoring and managing network devices and systems. In a server environment, directory services can reduce the need for separate local accounts across many systems and help administrators apply centralized identity policies. Proper security controls, encryption, and access restrictions remain important when deploying directory-based authentication.

Question 12

Which protocol is specifically designed to synchronize the clocks of servers and network devices?

1. FTP
2. SMTP
3. DHCP
4. NTP

Correct Answer: 4

Explanation:

Network Time Protocol (NTP) synchronizes system clocks across computers and network devices. Accurate time is important for authentication systems, security logging, distributed applications, scheduled tasks, and troubleshooting. Even small clock differences can make log correlation difficult or cause time-sensitive authentication mechanisms to fail. FTP transfers files, SMTP handles email transmission, and DHCP dynamically provides network configuration information such as IP addresses and gateway settings. In enterprise environments, servers may synchronize with trusted internal time sources rather than relying independently on public sources. Administrators should also consider hierarchy, redundancy, and appropriate security controls when designing time synchronization.

Question 13

Which storage architecture combines multiple physical disks into a logical storage system to improve availability or performance?

1. RAID
2. SMTP
3. DHCP
4. BIOS

Correct Answer: 1

Explanation:

RAID, or Redundant Array of Independent Disks, combines multiple physical storage devices into a logical storage arrangement. Depending on the selected RAID level, the design can provide redundancy, improved read or write performance, or a combination of these characteristics. Different RAID levels use techniques such as striping, mirroring, or parity. RAID should not be confused with backup because a RAID array can still be affected by accidental deletion, corruption, malware, or other failures that affect the data itself. SMTP is an email protocol, DHCP provides network configuration, and BIOS or firmware initializes hardware. RAID selection should match workload, availability, capacity, and performance requirements.

Question 14

Which server management interface can provide remote console access even when the operating system is unavailable?

1. Network switch
2. KVM over IP
3. File server
4. Print controller

Correct Answer: 2

Explanation:

A KVM over IP solution provides remote access to a server’s keyboard, video, and mouse functions through a network connection. This can allow administrators to interact with the system even when the operating system has failed, is still booting, or cannot be reached through normal remote-management protocols. This capability is particularly useful for troubleshooting boot problems, firmware settings, and operating-system startup issues. A network switch provides connectivity but does not itself supply console access. File servers and print controllers serve different purposes. Remote management infrastructure should be secured carefully because console-level access can provide extensive control over the server.

Question 15

Which backup type copies only data changed since the most recent full backup?

1. Differential backup
2. Incremental archive
3. Mirror snapshot
4. Complete image

Correct Answer: 1

Explanation:

A differential backup copies data that has changed since the last full backup. As additional backups are created, each differential backup generally grows because it continues to include changes made since that original full backup. During restoration, a full backup and the latest differential backup are typically needed. An incremental backup instead captures changes since the most recent backup, whether that backup was full or incremental. A mirror snapshot and complete image describe different backup or replication approaches and do not specifically represent the behavior described. Administrators should select backup methods according to recovery objectives, storage capacity, backup windows, and restoration requirements.

Question 16

A server generates excessive heat because cool air cannot enter the chassis effectively. Which issue is most likely responsible?

1. Insufficient storage capacity
2. Incorrect DNS records
3. Blocked airflow path
4. Expired administrator password

Correct Answer: 3

Explanation:

A blocked airflow path can prevent cool air from reaching heat-producing components and can cause server temperatures to rise. Dust accumulation, improperly positioned cables, blocked vents, incorrect rack installation, or failed fans can all contribute to poor airflow. High temperatures can reduce component reliability and may cause thermal throttling or automatic shutdown. Storage capacity does not directly determine airflow, DNS records affect name resolution, and an expired administrator password is an authentication issue. Troubleshooting thermal problems should include checking fan operation, intake and exhaust paths, ambient temperature, dust levels, and the physical arrangement of equipment inside the rack or chassis.

Question 17

Which firmware component performs hardware initialization before handing control to the operating system loader?

1. DHCP service
2. System firmware
3. File-system driver
4. Application runtime

Correct Answer: 2

Explanation:

System firmware, such as UEFI, initializes and prepares hardware during the early boot process before the operating system loader takes control. It can perform hardware checks, initialize devices, identify bootable storage, and provide configuration interfaces for platform settings. DHCP operates at the network configuration layer and is not responsible for initial hardware startup. A file-system driver operates within the operating system environment to provide access to storage structures, while an application runtime supports software execution after the operating system is available. Understanding the firmware stage is useful when diagnosing boot failures because problems may occur before the operating system itself begins loading.

Question 18

Which security measure most directly protects a server against unauthorized physical access to its internal components?

1. Strong DNS filtering
2. Endpoint encryption
3. Network segmentation
4. Locked equipment cabinet

Correct Answer: 4

Explanation:

A locked equipment cabinet provides a direct physical security control by restricting unauthorized people from accessing servers and their internal components. Physical access can allow an attacker to remove drives, connect unauthorized devices, alter hardware, or interfere with server operation. Network segmentation protects logical network boundaries but does not stop someone from physically touching a server. DNS filtering controls name-resolution-related traffic, while endpoint encryption protects information from certain forms of unauthorized access but does not physically prevent component tampering. Physical security should be considered alongside logical controls because a server’s security can be compromised through either physical or network-based access.

Question 19

Which monitoring metric is most useful for identifying sustained processor resource pressure on a busy server?

1. CPU utilization trend
2. Rack cabinet height
3. Keyboard connection state
4. Monitor screen size

Correct Answer: 1

Explanation:

A CPU utilization trend shows how much processor capacity is being consumed over time and can help identify sustained resource pressure. A consistently high utilization level may indicate that workloads are approaching the server’s processing capacity, although administrators should also examine factors such as workload characteristics, processor queue behavior, memory usage, and application performance. Rack height and monitor size do not indicate processor pressure. Keyboard connection state is generally unrelated to server processing demand. Monitoring trends rather than isolated measurements is particularly valuable because temporary spikes may be normal, while sustained high utilization may indicate a capacity or performance issue requiring further investigation.

Question 20

A server administrator wants to determine whether a failed storage device is causing repeated application errors. Which evidence would be most useful initially?

1. Chassis color specification
2. Storage health diagnostics
3. Desktop wallpaper setting
4. Keyboard layout preference

Correct Answer: 2

Explanation:

Storage health diagnostics can provide evidence about the condition of a failed or degraded storage device. Depending on the hardware and monitoring tools available, diagnostics may reveal error counts, predictive failure indicators, controller alerts, or other signs of drive problems. This information can help determine whether storage hardware is contributing to application failures. Chassis color, desktop wallpaper, and keyboard layout have no meaningful relationship to storage reliability. Administrators should also correlate hardware diagnostics with operating-system logs, storage-controller messages, application errors, and recent changes before reaching a final conclusion. Using multiple evidence sources helps distinguish a genuine hardware failure from another underlying problem.