CompTIA SK0-005 Practice Test - Questions Answers, Page 40

Port 69 is used for TFTP (Trivial File Transfer Protocol), which is an insecure and unencrypted protocol for file transfer. Port 1010 is used for a malicious website that generates pop-up ads. Both of these ports are likely to be exploited by hackers or malware to compromise the server or the web application. The server administrator should close these ports and rerun the scan to verify that they are no longer open12.

References = 1: Why Are Some Network Ports Risky, And How Do You Secure Them? - How-To Geek(https://www.howtogeek.com/devops/why-are-some-ports-risky-and-how-do-you-secure-them/) 2: Switchport Port Security Explained With Examples - ComputerNetworkingNotes(https://www.computernetworkingnotes.com/ccna-study-guide/switchport-port-security-explained-with-examples.html)

A subscription license is a type of license that grants the user the right to use a product or service for a fixed period of time, usually a year. The user pays a recurring fee, regardless of how much they use the product or service. Subscription licenses are common for cloud-based software and services, such as Microsoft 3651 or DocuSign2.

References = 1: Compare All Microsoft 365 Plans (Formerly Office 365) - Microsoft Store(https://www.microsoft.com/en-us/microsoft-365/buy/compare-all-microsoft-365-products) 2: DocuSign Pricing | eSignature Plans for Personal & Business(https://ecom.docusign.com/plans-and-pricing/esignature)

A server has multiple fans inside the chassis to cool down the components and prevent overheating. If one of the fans fails, it can cause the server to reboot and crash due to thermal issues. A failed fan can also make loud noises due to friction or vibration.The administrator should check the fans and clean them from dust and debris, or replace them if they are damaged12.

References=1: It's Too Loud!3 Solutions to Remedy Server Noise - Computerware Blog | DC Metro | Computerware Blog(https://www.cwit.com/blog/it-s-too-loud-3-solutions-to-remedy-server-noise)2: What factors affect the noise level of a server? - Server Fault(https://serverfault.com/questions/430550/what-factors-affect-the-noise-level-of-a-server)

QSFP+ (Quad Small Form-Factor Pluggable Plus):This transceiver type is designed specifically to handle 40Gbps network speeds. QSFP+ connectors are hot-swappable and support various cable types, including fiber optic and copper (DAC).

10GigE:While a valid network technology, 10GigE only supports up to 10Gbps, not the required 40Gbps.

SFP (Small Form-factor Pluggable):A common transceiver type, but the standard SFP only supports a maximum of 1Gbps.

SFP+ (Enhanced Small Form-factor Pluggable):Supports up to 10Gbps, not sufficient for 40Gbps in this scenario.

References:

CompTIA Server+ Objectives(Exam codes SK0-004 or SK0-005): Search for sections on networking standards and transceiver types.

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.

Link Aggregation:Involves combining multiple physical network interfaces into a single logical interface. This creates increased bandwidth, improved fault tolerance, and load balancing, where traffic can be distributed across all links in the group. (CompTIA Server+ Objectives SK0-004: 2.4)

Why other options are incorrect:

Most recently used algorithm:A concept used in memory management, not network traffic distribution.

Active-passive configuration:Used for failover with only one interface active at a time.

Failover:Ensures service continuity if an interface fails but does not inherently distribute load across multiple links.

Network Installation:Allows the OS image to be deployed from a central server, streamlining deployment across multiple systems simultaneously. This is significantly faster than individual installations from other media. (CompTIA Server+ Objectives SK0-004: 3.1)

Why other options are less optimal:

Embedded:Refers to OSes pre-installed on hardware and not intended for mass deployment.

Optical (CDs/DVDs):Requires physical media insertion on each server, slower than network distribution.

USBSimilar to optical, requires individual installations and can be time-consuming for multiple servers.

HIDS (Host Intrusion Detection System):Continuously monitors a system for suspicious activity and logs or raises alerts when potential threats are identified. This proactive approach is crucial for identifying and mitigating threats on a web server exposed to the external network.

Applying OS updates:While essential for maintaining system security, updates address vulnerabilities and may not necessarily identify ongoing threats.

Disabling unused services:Reduces the attack surface by minimizing potential entry points for malicious actors, but doesn't actively identify threats.

Installing anti-malware:Primarily designed to detect and remove malware after infection, not for ongoing threat identification.

References:

CompTIA Server+ Objectives(Exam codes SK0-004 or SK0-005): Search for sections on intrusion detection and prevention.

RAID 5 configuration:Using five of the available drives in a RAID 5 configuration meets the requirements for:

Storage capacity:Four 600GB drives (2, 5, and 6) provide a total usable capacity of 2.4TB (4 * 600 * 0.8), exceeding the minimum requirement of 2TB. RAID 5 introduces parity data for fault tolerance, sacrificing some usable space (one drive's worth).

Performance:The combination of multiple drives in a RAID 5 array improves read performance compared to a single drive setup.

Fault tolerance:Even with a single drive failure (any of the five drives used in the RAID 5), the remaining drives can reconstruct the lost data, allowing the server to continue operating.