CompTIA SK0-005 Practice Test - Questions Answers, Page 42

Recovery Time Objective (RTO) refers to the target time set for the recovery of IT and business activities after a disaster has struck, which includes restoring server, network, and data access. The policy requirement mentioned in the question aligns with the definition of RTO, as it specifies the maximum allowable downtime or the time within which functionality must be restored. Mean Time Between Failures (MTBF) and Mean Time To Repair (MTTR) are metrics related to the reliability and repair times of systems but do not specifically pertain to disaster recovery time frames. Recovery Point Objective (RPO) describes the acceptable amount of data loss measured in time, not the restoration of operations.

The given output in the image indicates that the file is present, but the permissions may not allow it to be read. The output indicates '-rw-------', which means that the file is set to be readable and writable by the owner only, with no permissions for group or others. To allow the file to be read by users other than the owner, the file's permissions will need to be changed. The chmod (change mode) command is used to change the file's permissions in Linux. For example, chmod 644 file would change the permissions of the file to be readable by everyone and writable by the owner, which is typically what's required for a file server. It is always recommended to apply the least permissive settings that still allow the required operation to maintain security.

Uplink redundancy is a method used to ensure that if one physical network interface card (NIC) fails, the network connectivity for the virtual machines (VMs) does not go down. This is typically achieved by configuring multiple NICs to connect to a single virtual switch (vSwitch) and setting up NIC teaming or bonding. The vSwitch manages the internal network traffic between the VMs and the outside network by using the physical NICs assigned to it. By configuring the vSwitch with multiple NICs, you can create redundancy, so if one NIC fails, the other NICs can take over the traffic, ensuring continuous network connectivity.

When configuring a server rack, it's important to consider:

A) Floor load limitations: Server racks can be extremely heavy, especially when filled with equipment like blade servers. It is crucial to ensure that the floor can handle the load to avoid structural damage or failure.

B) Rack balancing: Properly distributing the weight in a server rack is important for stability. Heavier equipment should generally be placed at the bottom to prevent the rack from becoming top-heavy and risking a tip-over.

C) Proper lifting techniques: Using correct lifting techniques when placing servers into a rack is vital to prevent personal injury.

The Recovery Point Objective (RPO) refers to the maximum tolerable period in which data might be lost from an IT service due to a major incident. The policy mentioned in the question highlights that data loss exceeding one hour is unacceptable, directly relating to the RPO concept. RPO is critical in disaster recovery and business continuity planning, indicating the age of the files that must be recovered from backup storage for normal operations to resume without significant losses. MTTR (Mean Time To Repair), RTO (Recovery Time Objective), and MTBF (Mean Time Between Failures) are related concepts but do not specifically address the amount of data loss that can be tolerated.

QSFP+ (Quad Small Form-factor Pluggable Plus) connectors are used in high-density, high-speed networking solutions such as 40 Gigabit Ethernet (40GbE) interfaces. When upgrading a server's network to 40Gbps, QSFP+ is the appropriate choice due to its capability to support such high-speed data transfer rates. 10 GigE, SFP, and SFP+ connectors are used for lower speed connections (10Gbps and below for SFP+ and 10 GigE, and even less for SFP), making them unsuitable for a 40Gbps network upgrade.

Before decommissioning and wiping a file server, it's crucial to verify the asset management documentation. This documentation provides detailed records of the server's lifecycle, including procurement, usage, maintenance, and decommissioning information. Ensuring that asset management documentation is up-to-date and accurate is essential before proceeding with the server's decommissioning to maintain proper inventory control, comply with regulatory and organizational policies, and facilitate any potential audits. While the media destruction method, recycling policy, and document retention policy are important considerations in the decommissioning process, verifying asset management documentation is the first step to ensure the server is correctly identified and accounted for in the organization's asset registry.

To enable a user to both read and write to a file, the administrator needs to provide 'modify' rights. This permission level allows the user not only to open and view the file (read) but also to make changes and save those changes back to the file (write). 'Read and execute' rights would allow the user to open and run the file but not make any changes. 'List folder contents' rights would enable the user to view the files within a folder but not make changes to them. 'Full control' rights would provide the user with complete control over the file, including the ability to change permissions and delete the file, which exceeds the principle of least-privilege access necessary for this task.

A Type 1 hypervisor (also known as a bare-metal hypervisor) is installed directly on the hardware and is designed to manage multiple virtual machines. It is the most common type of hypervisor used in virtualization environments.

Type 1 hypervisor (Answer A): This is a core technology that enables virtualization by running virtual machines directly on the physical hardware.

Bare-metal installation (Option B): Refers to installing an OS or hypervisor directly on hardware, but doesn't inherently support virtualization unless it's a hypervisor.

Server-level redundancy (Option C): This provides fault tolerance but is not related to virtualization.

Active-active load balancing (Option D): Refers to distributing workloads across multiple servers, not directly tied to virtualization.

CompTIA Server+

Reference:

This topic is covered under SK0-005 Objective 1.3: Explain virtualization concepts.