Free CompTIA Network+ N10-009 Practice Test

When the volume of data packets exceeds the carrying capacity of a network segment, it primarily results in increased packet delays and potential losses. This is because the network cannot handle the excessive load, leading to buffered or dropped packets. Other options like 'Enhanced throughput' and 'Reduced latency' represent misunderstandings of network congestion effects – higher traffic volumes degrade, rather than improve, performance characteristics. 'Automatic rerouting of traffic', although possible through certain configurations, is not a direct consequence of congestion.

Pre-shared key (PSK) authentication uses a single shared secret key known to all authorized users of a WiFi network, making it simpler but less secure compared to Enterprise authentication, which uses individual credentials per user, often integrated with a RADIUS server for better security and management.

Fibre Channel technology is primarily used for networking storage systems and linking data centers. It supports high-speed data transfer rates, making it ideal for SAN deployments. Answer options like 'home networking and WAN deployment' do not commonly use Fibre Channel due to its cost and specialized infrastructure demands. Similarly, 'consumer internet access' also does not fit the application of this technology as it is tailored towards storage connectivity rather than general internet access.

An incorrect default gateway on a device typically leads to the inability to communicate with devices outside the local subnet. The default gateway is responsible for routing the packets of a device to destinations not within the immediate network. If it is incorrect, the device can only communicate locally, not beyond its subnet, which is why the device 'Cannot access external websites or services' is the correct answer. The other options could be symptoms of other configuration errors, but they do not directly relate to problems with the default gateway setting.

SAML is primarily used for exchanging authentication and authorization data between an identity provider and a service provider. This mechanism is crucial for enabling Single Sign-On (SSO), which allows users to access multiple services with one set of login credentials without repeatedly authenticating. SAML helps in streamlining the login process and enhancing security by reducing the number of times a user has to authenticate. Permissions management and key management are not directly related to SAML's primary function, which focuses on authentication and authorization assertions.

802.1X provides an authentication framework that allows network devices, such as switches and wireless access points, to become part of an authentication process before allowing further access to the network. This protocol works by encapsulating and transporting the authentication data between the client and the authentication server, typically using the Extensible Authentication Protocol (EAP). Port-based Network Access Control is a feature of 802.1X that denies all access to the network via the port to which the client is connected until the client's identity is verified and authorized. This involves blocking all traffic, except authentication messages, until the client is authenticated, serving to prevent unauthorized access. The other options, while related to network security, do not directly describe the function of 802.1X as thoroughly or accurately.

The correct answer is 'True'. IEEE 802.11h standard was indeed implemented to address issues of interference with systems like military and satellite radar operations, particularly in the 5GHz frequency band. This regulation is critical for avoiding harmful interference in environments where these radar systems operate, ensuring wireless networks adapt to existing frequency uses via mechanisms like DFS and TPC.

It is essential to back up the current configurations before any changes are made. This allows the network to be restored to its previous state if the new configurations lead to issues or failures. This practice ensures minimal service disruption and provides a recovery point. Making notes of performance metrics helps to compare before and after states but does not safeguard against configuration errors. While informing the IT team is a good practice for awareness, it does not directly protect against potential configuration issues.

A jump box serves as a secure gateway through which a user can connect before launching any administrative task or connecting to other servers within the network. It isolates the environment from exposure to security risks by minimizing the number of other machines directly accessible from the outside. This security measure helps prevent attacks on the secure internal network. Other answers are incorrect as they either describe functionalities that are not typical of jump boxes or exaggerate the role beyond its main security purpose.

WPA3 was introduced to provide enhanced encryption capabilities over the earlier WPA2 protocol. One of its key enhancements is the use of Simultaneous Authentication of Equals (SAE), which replaces the Pre-shared Key (PSK) in WPA2. SAE is specifically designed to provide more robust protection against offline dictionary attacks. The other options, while related to network security, do not specifically address the issue of enhancing encryption to protect against these types of attacks. WPA2, although a solid security protocol, is less effective against offline dictionary attacks compared to WPA3.

An asset inventory explicitly lists all the hardware within an organization, including details about warranty support, which is crucial for understanding which devices are currently under warranty before planning hardware updates. Hence, it facilitates informed decisions about upgrades or replacements if warranty support is nearing an end. Physical and logical diagrams, though useful for understanding network connectivity and layout, do not typically include warranty information. IPAM tools are primarily used for managing IP addresses and do not include hardware warranty details.

Role-based access control (RBAC) uses predefined roles associated with specific permissions. Users are then assigned to these roles, thereby inheriting the permissions. This method is effective in managing large numbers of users and can simplify the administration of network permissions and security. The incorrect answers mentioned relate to other management strategies or access authentication methods, which are not directly related to the foundational principle of RBAC.

TXT records are specifically designed to store arbitrary text information associated with a hostname, which includes various purposes such as verifying domain ownership, security measures, and other services that require direct information about the domain. Despite other records serving critical direct resolution roles, TXT records uniquely enable both humans and machines to read additional information that does not fit into typical resolution protocols, providing a versatile medium for various configurations.

Testing the cable with a cable tester is the best next step because it directly assesses the integrity of the physical connection, which is suspected to be the problem based on the engineer's theory. Starting with a ping or traceroute would not be effective if the physical layer is compromised, and replacing the switch disregards simpler and less costly diagnostic steps like cable testing.

Opting for HTTPS encrypted resolutions, often abbreviated as DoH, utilizes HTTPS to encrypt the resolution queries, combining HTTP with SSL/TLS. This ensures secure server identification and prevents the interception and manipulation of the resolution data during transit. Utilizing UDP, while common, does not encrypt the resolution queries, thus exposing them to potential eavesdropping and tampering. Automatic resolutions updating is primarily concerned with updating records rather than securing traffic. Lastly, resolutions over SCTP is not a standard recognized protocol for securing these queries and does not technically provide the protection required.