CompTIA N10-008 Practice Test - Questions Answers, Page 81

The802.11nstandard is the most suitable option for this scenario. It operates in both the 2.4GHz and 5GHz frequency bands, providing better performance and higher data rates compared to older standards like 802.11b and 802.11g.

802.11n(also known asWi-Fi 4): This standard supports multiple-input and multiple-output (MIMO) technology, which allows for better coverage, increased throughput, and improved reliability. It operates in both the 2.4GHz and 5GHz frequency bands, making it compatible with a wide range of devices. The 5GHz band provides less interference and higher data rates, making it suitable for modern networks.

802.11b: This older standard operates only in the 2.4GHz band and has a maximum data rate of 11 Mbps. It is not recommended for high-performance networks.

802.11g: This standard also operates in the 2.4GHz band and offers a maximum data rate of 54 Mbps. While it is faster than 802.11b, it is still not as efficient as 802.11n.

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CompTIA Network+ N10-008 Study Guide

The type of network being described here is aWAN (Wide Area Network). BGP (Border Gateway Protocol) is commonly used for routing between different autonomous systems (ASes) over large geographical distances, such as connecting branch offices across states or countries.

WAN (Wide Area Network): A WAN spans a large geographic area and connects multiple LANs (Local Area Networks) or other networks. It allows communication between distant locations, such as connecting branch offices, data centers, or remote sites. BGP is often used in WANs to exchange routing information between different ASes.

BGP (Border Gateway Protocol): BGP is an exterior gateway protocol used for routing between autonomous systems (ASes). It enables routers in different ASes to exchange information about network reachability and select optimal paths for data transmission.

The most common sensors installed in a data center to monitor environmental issues include:

Temperature Sensors: These sensors monitor the ambient temperature within the data center. Maintaining an optimal temperature is crucial for the proper functioning of servers and other equipment.

Humidity Sensors: These sensors measure the humidity levels. High humidity can cause condensation, leading to equipment damage, while low humidity can cause static electricity buildup.

1:CompTIA Network+ Certification Exam Objectives (N10-008)

The VPN type that provides the highest security for a user who travels often and has high bandwidth requirements is theFull-tunnel VPN. Here's why:

Full-Tunnel VPN:

Alltraffic from the user's device is encrypted and sent through the VPN tunnel to the corporate network.

Providesmaximum securitybecause even internet-bound traffic is routed through the corporate network.

However, it may result inhigher latencydue to the additional routing.

Bandwidth requirements are met, but performance may be impacted.

2:CompTIA Network+ Certification Exam Objectives (N10-008)

The correct answer is 1000BASE-T. This standard is part of the Ethernet technologies and uses four pairs of Category 5 or higher copper cables. It's designed to support networks at Gigabit Ethernet speeds up to 1000 Mbps (1 Gbps) over distances up to 100 meters. Unlike the other options listed, which pertain to fiber optic cable standards (1000BASE-FX, 1000BASE-LR, and 1000BASE-SX), 1000BASE-T is the only one utilizing copper wiring, making it the suitable choice for this question.

Enhanced Interior Gateway Routing Protocol (EIGRP) uses bandwidth and delay as its primary metrics to determine the best path for routing traffic. EIGRP is an advanced distance-vector routing protocol, which is proprietary to Cisco systems, making it highly efficient in a variety of network designs. It can also utilize load, reliability, and maximum transmission unit (MTU) as additional metrics, but bandwidth and delay are the primary considerations in its composite metric calculation. Other protocols listed, such as RIP, OSPF, and BGP, use different metrics like hop count (RIP) and cost based on link state (OSPF), or make decisions based on path attributes and policy (BGP).

When a network administrator observes CRC errors on a specific switchport associated with one user, the first troubleshooting step recommended is to replace the user's network cable. CRC errors are often indicative of physical layer issues such as noise, interference, or damaged cables. By replacing the network cable, the administrator can potentially resolve these errors without more drastic measures like replacing hardware components (NIC, switch, or uplink cables), which could be more costly and less effective as initial steps. This approach minimizes downtime and is a cost-effective first step in the troubleshooting process.

The term 'CVE' stands for Common Vulnerabilities and Exposures. It is a reference method used for publicly known security vulnerabilities. When a vendor issues a security advisory about vulnerabilities in their products, they often include CVE identifiers. These advisories help users understand the specific issues and apply necessary resolutions or patches. Unlike the other options, CVE specifically relates to the identification and cataloging of known vulnerabilities, making it the correct choice in the context of a vendor sending out a security advisory listing issues and their resolutions.

A duplex mismatch is the most probable cause of the issues described, where the network connection experiences slow data transfers and intermittent lockups. This occurs when one device in a network connection operates in full-duplex mode and the other in half-duplex, leading to collisions and performance issues. In the scenario provided, the small switch taken from storage may not have been configured to match the duplex settings of the existing network, resulting in these data transfer issues. Other options like reversed TX/RX pinouts, cable crosstalk, or a failed transceiver would typically result in complete connection failures or consistent degradation, not intermittent issues as described.