Free CompTIA Network+ N10-008 Practice Test

This issue is indicative of an 'open' fault, where there is a break or disconnection within the cable run, specifically affecting the wire associated with pin 1. An open fault prevents signal transmission, which is consistent with the absence of LED indicators on the NIC. A 'short' would suggest that two wires are electrically connected inside the cable, which would not typically be indicated by a discontinuity on a single pin. Incorrectly wired connectors or a faulty cable tester would likely present different symptoms or error messages not consistent with a single wire showing discontinuity.

The correct logging level to capture warnings of potential issues without seriously affecting the operation is 'Warning'. This level logs events such as potential issues and errors that are not necessarily critical or error level but could become a larger problem if not addressed. The 'Informational' level would contain too much extraneous data, as it logs all successful operations. The 'Alert' level is used for events requiring immediate action, which is a higher severity than warnings of potential issues. The 'Emergency' level is the highest severity, indicating the system is unusable, and is not the correct choice for capturing warnings about potential issues.

Disabling switch ports that are not in use reduces the number of entry points into the network, therefore limiting the potential attack surface for unauthorized access or network breaches. By minimizing unnecessary active connections, the risk of port-based threats such as MAC flooding or unauthorized device connections is also mitigated.

A load balancer is best suited for managing incoming network traffic efficiently across multiple servers, thereby ensuring optimal performance and minimizing downtime. A router and a switch primarily handle traffic direction at different layers of the OSI model but do not distribute workloads among servers. A VPN headend manages secure connections for remote users but does not balance server loads.

The primary purpose of an Acceptable Use Policy is to define acceptable behaviors and use of company resources, thus mitigating potential legal issues and keeping the network secure by guiding users in what is and is not allowed. This policy helps prevent misuse of the network and can reduce risk to the organization by setting clear guidelines for user conduct.

Cyclic redundancy checks (CRCs) are a common method used to verify the integrity of data transmitted over a network. It works by performing a mathematical calculation on the data and sending this CRC value along with the data itself. The receiver then performs the same calculation and compares the result with the transmitted CRC value. If the values match, the data is considered intact; if not, this indicates that an error has occurred in transmission. Other listed terms do not pertain specifically to error detection in data transmissions.

The correct answer is to configure an 'implicit deny' rule at the end of the access control list (ACL). This rule ensures that if traffic does not match any of the previous allow rules, it will be denied by default, thus providing an additional layer of security. This is the most fitting option since it aligns with the concept of 'deny by default' where everything not explicitly allowed is denied. Other options such as 'allow by default' or 'ignore unspecified traffic' would result in a less secure configuration since they could potentially let unwanted or unverified traffic through the firewall, which is against the security best practices associated with an implicit deny approach.

A repeater is used to extend the range of a wireless network by capturing the signal from the access point and retransmitting it. This is the most cost-effective solution to amplify the existing signal and extend its range without running additional cabling or setting up extra infrastructure.

Protected EAP (PEAP) is the correct answer because it fits the requirement for a method that accommodates both certificate-based and password-based user authentications within a secure channel. PEAP creates an encrypted TLS tunnel to transport authentication data, which satisfies the secure channel requirement. Other options such as EAP-TLS only support certificate-based authentication, EAP-MD5 does not provide a secure tunnel and is considered insecure, EAP-FAST is more complex to deploy and is not as widely supported, EAP-TTLS is less common compared to PEAP and might face compatibility issues, and LEAP, being proprietary and less secure, doesn't fulfill the requirements as effectively as PEAP.

The OSI model from 1-7: Physical, Data Link, Network, Transport, Session, Presentation, Application

Separating voice and data traffic is critical for ensuring Quality of Service (QoS). When voice traffic is given a dedicated path within the network, it can be prioritized, which is necessary to maintain the clarity and reliability of VoIP communications. Voice data is sensitive to delays and packet loss, and segregating this traffic helps minimize these issues, improving call quality significantly.

The correct transceiver for connecting a switch to a legacy multimode fiber running at 1 Gbps is the 1000BASE-SX SFP. This transceiver is designed for use with multimode fiber and operates at gigabit speeds. The 1000BASE-SX standard is specifically tailored for short-wavelength transmissions on multimode fiber optics.

Blocking certain ports can restrict specific types of network traffic, for example blocking port 80 would restrict the HTTP protocol. It is important to know however that this only blocks the default HTTP port and another could be used to bypass this measure.

EAP-TLS is the correct authentication mechanism to deploy because it provides a secure channel by using mutual authentication via client and server certificates. This ensures that user credentials are not compromised if intercepted, and it allows all access attempts to be logged, which is essential for auditing purposes. EAP-MD5 is an older, less secure mechanism that does not encrypt credentials; therefore, it does not meet the security requirements. EAP-FAST establishes a secure communication channel after a successful negotiation but does not inherently meet the specified criteria as well as EAP-TLS. LEAP is vulnerable to dictionary attacks and does not encrypt the credentials securely, making it insufficient for these criteria.

Cyclic Redundancy Checks (CRC) are used to detect accidental changes to data in digital networks and storage devices. A CRC error indicates that there is a mismatch between the transmitted and received frame's calculated checksum, usually caused by collision or a physical issue with the network media (such as cable faults or electrical interference). It points to possible data corruption during transmission.