CompTIA SK0-005 Exam Questions

Different storage protocols operate at different levels (file-based vs. block-based):

iSCSI (Internet Small Computer Systems Interface) is a block-level protocol, meaning that the storage appears as raw disk space to the operating system. Backups would require copying entire blocks, rather than specific files.

FC (Fibre Channel) is another block-level protocol used in high-performance SANs. It does not support file-based storage natively.

FCoE (Fibre Channel over Ethernet) extends FC over Ethernet but still functions as a block-based storage solution.

NFS (Network File System) is a file-based storage protocol, making it the best option. It allows direct access to files, which enables backup software to back up only modified files instead of the entire block device.

Since the administrator requires a file-based storage protocol to ensure efficient incremental backups, NFS is the correct choice.

Archive is a method of storing historical data that is not frequently accessed or modified. Archive can reduce the amount of data that needs to be backed up and save bandwidth and storage space. Differential is a method of backing up only the data that has changed since the last full backup. Differential can also save bandwidth and storage space, as well as speed up the backup process.

CompTIA Server+ Certification Exam Objectives1, page 12

Server Management: Server Hardware Installation and Management2, Module 2, Lesson 5

The most likely cause of this issue is that the UEFI boot was interrupted by a missing Linux boot file, such as grub.cfg or vmlinuz, which are essential for loading the Linux kernel and booting the system. The s> prompt indicates that the system entered into UEFI Shell mode, which is a command-line interface for troubleshooting UEFI boot issues. The administrator can use UEFI Shell commands to locate and restore the missing boot file or change the boot order. Verified Reference: [UEFI Shell Guide]

When troubleshooting memory-related errors, it's essential to consider several key factors:

Memory Compatibility: Memory modules must match the specifications supported by the motherboard (e.g., DDR4 vs. DDR5, ECC vs. non-ECC, buffered vs. unbuffered). Using incompatible RAM can cause boot failures, crashes, or instability.

Memory Speed: While RAM speed mismatches can affect performance, they typically do not cause a server to fail to power on. Most systems automatically adjust to the slowest module.

Memory Slots: Incorrect installation or damaged slots could be an issue, but the priority is to check compatibility first.

Boot Order: This setting controls the sequence in which devices boot the OS, which is unrelated to memory-related power issues.

Since the server remains unstable after adding memory, the most likely issue is an incompatibility with the motherboard. The first step is to verify whether the newly installed RAM meets the server's hardware requirements.

The upgrade involves transitioning from 10Gb copper to 25Gb fiber, which requires appropriate network interface hardware:

FCoE (A) - Fibre Channel over Ethernet: This protocol allows Fibre Channel to run over Ethernet networks, but it does not address the physical change from copper to fiber.

VLAN ID (B): VLANs segment networks but do not impact the physical connectivity (copper vs. fiber).

SFP (C) - Small Form-factor Pluggable: SFP transceivers are hot-swappable modules used in network interfaces to support fiber connections. A 25Gb SFP28 transceiver would be required for the transition from 10Gb copper to 25Gb fiber. This is the correct answer.

HBA (D) - Host Bus Adapter: HBAs are typically used for storage connectivity (such as Fibre Channel SANs), not general network upgrades.

Since SFP modules allow servers to support fiber connections, this is the best choice for upgrading from 10Gb copper to 25Gb fiber.