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Answer : B

When a newly installed network card is not being recognized by the operating system, the most likely cause is that the necessary driver is not installed or loaded. Device drivers act as intermediaries between the hardware and the operating system. Without the correct driver, the OS cannot communicate with or properly use the network card.

Other Options:

A . The network cable is unplugged: This would prevent network connectivity, but the OS would still recognize the network card itself.

C . The IP settings are incorrect: Incorrect IP settings can cause network issues but do not prevent the OS from recognizing the NIC.

D . PXE boot is enabled: PXE (Preboot Execution Environment) allows a system to boot from a network rather than a local disk. While PXE may affect booting, it does not directly cause a NIC to be unrecognized by the OS.

Thus, the most likely cause is that the driver for the network card is not installed or properly loaded.

CompTIA Server+ Certification Exam Objectives (SK0-005): Server Hardware -- Explain server components and their functions

Answer : C

Multi-Factor Authentication (MFA) requires the use of two or more different authentication factors to verify a user's identity. The three main authentication factors are:

Something You Know -- Password, PIN, security questions

Something You Have -- Smart card, key fob, RFID chip

Something You Are -- Biometrics such as fingerprint, retina scan

Option C (RFID chip and PIN code) meets the MFA requirement because:

RFID chip (Something You Have) provides a physical security token.

PIN code (Something You Know) adds a knowledge-based authentication factor.

Other Options:

A . Retinal scan and fingerprint reader: Both are biometric factors (Something You Are) and do not satisfy MFA requirements, which need at least two different categories.

B . Key fob and employee badge: Both are physical items (Something You Have), failing to meet MFA requirements.

D . An alphanumeric, case-sensitive password with symbols: This only represents Something You Know, not MFA.

Thus, RFID chip and PIN code (Option C) provides two separate authentication factors and meets the MFA policy requirements.

CompTIA Server+ Certification Exam Objectives (SK0-005): Security and Disaster Recovery -- Explain authentication and access control

Answer : A

When a server that previously received updates from a Windows Server Update Services (WSUS) server suddenly fails to do so, one common cause is that the local software firewall is blocking the necessary ports or services required for WSUS communication. Firewalls can be reconfigured, either intentionally or accidentally, leading to such connectivity issues.

CompTIA Server+ Certification Exam Objectives (SK0-005): Server Maintenance -- Explain patching and update management

Answer : D

A Private Cloud is a cloud computing model where the infrastructure is dedicated solely to a single organization. This model offers enhanced security and privacy, as all resources are behind the organization's firewall and exclusively managed by the organization. By utilizing their own hardware, the company can control costs and tailor the environment to meet specific security and compliance requirements, making it ideal for application development and testing.

Other Options:

A . Public: In a public cloud, services are delivered over the public internet and shared among multiple organizations. While cost-effective, it offers less control over security and privacy, which may not align with the company's requirements.

B . Community: This cloud model is shared among several organizations with similar interests and requirements. Although it provides more control than a public cloud, it still involves shared resources, which may not meet the company's strict security and privacy needs.

C . Hybrid: A hybrid cloud combines elements of both private and public clouds, allowing data and applications to be shared between them. While it offers flexibility, managing security and privacy across different infrastructures can be complex and may not provide the level of control the company desires.

Therefore, deploying a Private Cloud allows the company to utilize its own hardware, ensuring cost savings while meeting stringent security and privacy requirements for application development and testing.

CompTIA Server+ Certification Exam Objectives (SK0-005): Server Administration -- Summarize the purpose and operation of virtualization

Answer : A

During a data center migration, the ability to move workloads seamlessly from one environment to another is crucial. Portability in virtualization refers to the capability to transfer virtual machines (VMs) across different physical hosts or data centers with minimal disruption. This flexibility simplifies the migration process, reduces downtime, and ensures business continuity.

Other Options:

B . Orchestration: This involves the automated arrangement, coordination, and management of complex computer systems, middleware, and services. While orchestration enhances efficiency in managing virtual environments, it is not the primary benefit during a migration process.

C . Overprovisioning: This refers to allocating more resources than are physically available, relying on the assumption that not all resources will be used simultaneously. Overprovisioning can lead to resource contention and is generally avoided in well-managed virtual environments.

D . Scalability: This is the ability to increase or decrease resources and workloads dynamically based on demand. While scalability is a significant advantage of virtualization, it does not directly address the challenges associated with data center migration.

Therefore, Portability is the most critical benefit of virtualization during a data center migration, as it facilitates the efficient and reliable transfer of workloads between environments.

CompTIA Server+ Certification Exam Objectives (SK0-005): Server Administration -- Summarize the purpose and operation of virtualization