SK0-005 Exam Dumps - CompTIA Server+ Certification Exam

A rescan on the server’s RAID controller is a possible troubleshooting step to detect the existing RAID configurations on the connected storage arrays. A firmware upgrade may cause the RAID controller to lose the RAID metadata or settings, and a rescan may restore them. A rescan is preferable to restoring the default RAID configuration, as the latter may erase the existing data on the arrays. Power cycling the storage arrays or booting the OS into recovery mode may not help if the RAID controller does not recognize the RAID sets.

References: CompTIA Server+ Study Guide, Chapter 7: Storage, page 287.

A loop is a programming construct used to repeat a block of code multiple times. In this case, if a function needs to run ten times, a loop (such as a for loop or while loop) would be the appropriate choice.

Loop (Answer A): This allows the function to be executed repeatedly without writing redundant code.

Variable (Option B): A variable is used to store data, but it doesn’t handle repetition.

Comparator (Option C): Comparators are used to compare values, not for repeating code.

Conditional (Option D): Conditionals (if, else) are used for decision-making, not repeating actions multiple times.

CompTIA Server+ Reference:This topic is related to SK0-005 Objective 1.1: Understand basic scripting and automation concepts.

In RAID 10 arrays, disk performance is crucial, especially if they are high-speed 15K RPM SAS HDDs, as each disk in the array is part of a mirrored pair that also stripes data with another pair. When replacing a disk, it's essential that the new disk matches the specifications of the others, especially in terms of rotational speed (RPM). If the replaced disk is slower, it can significantly reduce the Input/Output operations per second (IOPS) of the entire array. This is because all disks need to work in tandem, and the slowest disk can become a bottleneck. Thus, checking the RPM of the newly replaced disk is a sensible first step to ensure it matches the performance of the other disks in the array.

The server’s local storage is experiencing problems. Only two out of four drives are found, and an additional hard drive connects and disconnects randomly.

Likely Cause: The most probable cause is a faulty power supply (Option B). Here’s why:

When a power supply is failing or not providing sufficient power, it can lead to intermittent connectivity issues with drives.

Drives may not be recognized during boot or may disconnect randomly due to power fluctuations.

RAM, CPU, and cooling failures typically result in different symptoms (e.g., blue screens, system instability, or overheating), which do not match the described issue.

When clients on a different VLAN cannot receive DHCP addresses, it’s often because there is no DHCP helper address configured on the router or switch. A DHCP relay/helper address forwards DHCP requests from clients on the VLAN to the DHCP server, which may reside on a different network.

Confirming the network has a helper address (Answer C): This should be the first step to ensure that DHCP requests from the VLAN are correctly routed to the DHCP server.

Checking client NIC speed (Option A): While important, incorrect NIC speed wouldn't affect the ability to obtain an IP address from DHCP.

Checking NTP server (Option B): Time synchronization is unrelated to DHCP issues.

Authorizing the DHCP server (Option D): This is essential for DHCP operation, but since this is an existing DHCP cluster, the helper address is more likely the issue.

CompTIA Server+ Reference:This topic is related to SK0-005 Objective 1.2: Manage server network connections.

A crash cart is the best low-cost option to connect to any server while on site in a data center with multiple server racks. A crash cart is a mobile unit that contains a monitor, a keyboard, a mouse, and cables that can be plugged into any server for direct access and control. A crash cart can be used for troubleshooting, maintenance, or configuration of servers without requiring remote access or network connectivity. A crash cart is also easy to move around and store in a data center. References: [CompTIA Server+ Certification Exam Objectives], Domain 2.0: Hardware, Objective 2.4: Given a scenario involving server management issues (e.g., remote access), troubleshoot using appropriate tools.

Overprovisioning: Involves allocating more virtual resources (e.g., CPU, RAM, storage) to virtual machines than the total physical resources available on a hypervisor. The idea is for resources to be dynamically shared, assuming not all VMs will demand their maximum allocation simultaneously.

Direct Access: This usually refers to technologies like RDMA (Remote Direct Memory Access) that allow for very low-latency, direct access to the memory of another computer over a network.

Link Aggregation: The practice of combining multiple physical network links to create a single logical link with increased bandwidth.

Component Redundancy: Refers to having multiple hardware components (e.g., power supplies, hard drives) to provide fault tolerance.

Scalability: The ability of a system to adapt and handle increased workloads by adding resources.

References:

CompTIA Server+ Objectives (Exam codes SK0-004 or SK0-005): Review the sections on virtualization concepts.

Virtualization Technology Documentation: Refer to documentation for popular hypervisors like VMware vSphere, Microsoft Hyper-V, or open-source solutions.

RAID 5 offers both disk redundancy and maximum usable disk capacity by using block-level striping with parity. RAID 5 allows one drive to fail while still retaining data, and it uses only one disk’s worth of space for parity, maximizing the usable capacity.

RAID 5 (Answer C): Provides redundancy with only one disk's space used for parity, maximizing storage.

RAID 0 (Option A): Provides no redundancy; if one drive fails, all data is lost.

RAID 1 (Option B): Mirrors data, so redundancy is provided, but only half the capacity is usable.

RAID 10 (Option D): Combines RAID 1 and 0 for high performance and redundancy but requires half the disk space for mirroring.

CompTIA Server+ Reference:This topic is covered under SK0-005 Objective 1.5: Explain RAID levels and their benefits.