CompTIA Updated SK0-005 Exam Questions and Answers by ashton

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 snapshot is a point-in-time image of a system's state that can be created while the system is running, without interrupting operations. Snapshots can be used to restore the entire system to the exact state at the time of the snapshot. They are commonly used in virtualized environments and allow administrators to roll back to a previous state if needed.

Snapshot (Answer A): Captures the entire system's state and can be taken without downtime.

Archive (Option B): Refers to long-term storage, not necessarily something that supports live backups.

Open file (Option C): Refers to a method that handles open files during backup but doesn’t provide full system restoration capabilities.

Differential (Option D): Backs up only the data changed since the last full backup but still requires a full backup for complete system restoration.

CompTIA Server+ Reference:This topic is related to SK0-005 Objective 4.1: Explain backup and recovery methods.

A CMOS battery failure can cause the server to lose its BIOS settings, including the date and time, which can affect the server’s functionality and connectivity. The servers have NTP (Network Time Protocol) configured to synchronize their clocks with a reliable time source, which can prevent time drift and ensure consistent timestamps. If one server has a wrong date and time, it can cause conflicts and errors with the other servers that have NTP configured.

References:

CompTIA Server+ Certification Exam Objectives1, page 9

Signs or symptoms of a CMOS battery failure2

NTP: Network Time Protocol

To free up storage space on a SAN with minimal effort and no additional cost, the following methods can be used:

Configuring compression (Answer A): Compression reduces the size of files stored on the SAN, allowing more data to be stored in the same space.

Enabling deduplication (Answer E): Deduplication identifies and removes duplicate copies of data, reducing the amount of space required for storage.

Deleting old and unused files (Option B): While effective, this requires manual effort and may not be the best long-term solution.

Increasing the number of IOPS (Option C): This relates to improving performance, not reducing storage space.

Decreasing the RAID level (Option D): Lowering the RAID level could reduce redundancy, which may free up space but also decreases fault tolerance.

Upgrading the filesystem type (Option F): This is a complex process that doesn’t directly reduce storage usage.

CompTIA Server+ Reference:This topic is covered under SK0-005 Objective 3.2: Summarize storage technologies and solutions.