CompTIA N10-008 Practice Test - Questions Answers, Page 83

Cameras are the best tool for remotely monitoring who is accessing a secure data center. They provide real-time visual verification of individuals entering and exiting the facility and can be monitored remotely to ensure security protocols are followed. Access control vestibules, employee training, and biometrics are also important for security but do not offer the same continuous, visual monitoring capability that cameras do. Cameras also serve as a deterrent to unauthorized access and can provide forensic evidence in the event of a security breach.

The symptoms described---intermittent connectivity and thousands of connection attempts from unrecognized devices---strongly suggest a denial of service (DoS) attack. This type of attack typically involves overwhelming a network service with excessive requests, in this case to the wireless access point (WAP), which prevents legitimate network traffic from being processed effectively. Options like wrong SSID, interference, and poor coverage do not explain the high volume of connection attempts and are less likely to cause such a specific connectivity disruption pattern.

Multicast is the network communication method to use when audio transmissions need to reach several specific devices simultaneously over an IP network. It allows for efficient network use by directing a single stream of data to multiple recipients without needing to send separate streams to each recipient. Unicast sends data to a single destination, anycast sends data to the nearest or best destination in a group, and broadcast sends data to all devices in the network segment. Thus, multicast is most appropriate for the requirement described.

Attenuation, or the loss of signal strength over distance, is likely the cause of the issue with the 492ft (150m) cable not establishing a link to the switchport. Ethernet standards typically limit the length of copper Ethernet cables to approximately 328ft (100m) for standard performance. Exceeding this distance, as in the case of the 492ft cable, often results in insufficient signal strength to maintain a reliable connection. Options such as cable shielding, incorrect pinout, or near-end crosstalk do not directly relate to the problem described by the excessive cable length.

A/23subnet mask has23bits set to1(255.255.254.0).

The formula to calculate the number of usable host addresses in a subnet is2^(32 - subnet bits) - 2.

For a/23subnet:

32 - 23 = 9bits are available for host addresses.

2^9 - 2 = 510usable host addresses.

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CompTIA Network+ N10-008 Study Guide

Given that hardware upgrades are not an option, the best configuration to provide a solution for increased bandwidth on wireless laptops isChannel bonding. Here's why:

Increasing RSSi: RSSi (Received Signal Strength Indicator) is related to signal strength but does not directly address bandwidth limitations.

MIMO (Multiple Input, Multiple Output): While MIMO improves throughput, it requires compatible hardware on both ends (access points and client devices). Since hardware upgrades are not allowed, MIMO is not a viable solution.

Channel bonding: This technique combines multiple adjacent channels to increase overall bandwidth. By using multiple channels simultaneously, the available bandwidth can be expanded without changing the hardware.

Reconfiguring SSID: Changing the SSID (Service Set Identifier) won't directly impact bandwidth; it only affects network identification.

Therefore, the correct answer isC. Channel bonding2.

To determine which RJ45 jack in a patch panel corresponds to the RJ45 drop in the Chief Executive Officer's office, the best tool for the network technician to use is aCable tester. Here's why:

Fusion splicer: Used for joining optical fibers, not for identifying specific jacks.

Cable tester: This tool helps verify cable continuity, identify wiring faults, and match connections between patch panels and drops.

Tone generator: Used to trace cables by sending an audible tone through them, but it doesn't directly identify specific jacks.

Spectrum analyzer: Used for analyzing frequency components in signals, not for cable identification.

Therefore, the correct answer isB. Cable tester3.

To assign IPv6 addresses without DHCP, the technician can useSLAAC (Stateless Address Autoconfiguration). Here's why:

SLAAC: Stateless Address Autoconfiguration allows devices to automatically configure their IPv6 addresses based on the network prefix advertised by routers. It doesn't rely on a central DHCP server for address assignment.

APIPA (Automatic Private IP Addressing): This is an IPv4 feature and not applicable for IPv6.

MAC reservation: This is related to DHCP and doesn't directly assign IPv6 addresses.

IPv4 to IPv6 tunnel: This is used for tunneling IPv6 traffic over an IPv4 network and doesn't address address assignment.

Therefore, the correct answer isA. SLAAC

The issue with an application's instructions being properly translated for network components is most likely at theApplication layer. Here's why:

Infrastructure layer: This layer deals with physical components (e.g., switches, routers) and is unlikely to cause translation issues.

Session layer: Responsible for establishing, maintaining, and terminating communication sessions but not directly related to application instructions.

Control layer: Not a standard OSI layer; it's likely a misnomer.

Application layer: This layer handles application-specific protocols and data. Translation issues often occur here.

Therefore, the correct answer isD. Application laye