N10-009 Online Practice Questions and Answers

Correct Answer: C

The issue is that no root bridge has been identified. In STP, a root bridge is necessary to manage redundant paths and avoid loops in the network. Without a root bridge, all switches will assume they can forward traffic, causing a network loop and connectivity problems.

Correct Answer: C

When a network interface's indicator lights are not blinking on either the computer or the switch, it suggests a physical layer issue. Here is the detailed reasoning: Ethernet Properly Connected: The Ethernet cable is correctly connected, eliminating issues related to a loose or faulty cable. No Indicator Lights: The absence of blinking indicator lights on both the computer and the switch typically points to the port being administratively shut down. Switch Port Shut Down: In networking, a switch port can be administratively shut down, disabling it from passing any traffic. This state is configured by network administrators and can be verified and changed using the command-line interface (CLI) of the switch. Command to Check and Enable Port: bash Copy code Switch> enable Switch# configure terminal Switch(config)# interface [interface id]

Switch(config-if)# no shutdown

uk.co.certification.simulator.questionpool.PList@75749ff2 : Basic Configuration Commands PDF, sections on interface configuration (e.g., shutdown, no shutdown).

Correct Answer: C

Understanding MTBF:

uk.co.certification.simulator.questionpool.PList@3417c0b6 Calculation and Importance:

Comparison with Other Metrics:

Application:

References:

CompTIA Network+ study materials on reliability and maintenance metrics.

Correct Answer: D

Using a /30 subnet mask is the most efficient way to conserve IP space for a point-to-point connection between two routers. A /30 subnet provides four IP addresses, two of which can be assigned to the router interfaces, one for the network address, and one for the broadcast address. This makes it ideal for point-to-point links where only two usable IP addresses are needed.References: CompTIA Network+ study materials and subnetting principles.

Correct Answer: A

Understanding Tracert:

uk.co.certification.simulator.questionpool.PList@4dafadfc Output Analysis:

Comparison with Other Tools:

Usage:

References:

CompTIA Network+ study materials on network troubleshooting and diagnostic tools.

Correct Answer: B

Understanding TTL (Time to Live):

uk.co.certification.simulator.questionpool.PList@5e5842cf Impact of TTL on DNS Changes:

Best Practice Before Making DNS Changes:

Verification of DNS Changes:

Comparison with Other Options:

References:

CompTIA Network+ study materials and DNS best practices.

Correct Answer: C

Correct Answer: C

Correct Answer: D

Link aggregation is a technique that allows multiple physical ports to be combined into a single logical channel, which provides increased bandwidth, load balancing, and redundancy. Link aggregation can be configured using protocols such

as Link Aggregation Control Protocol (LACP) or static methods.

References

Link aggregation is one of the common Ethernet switching features covered in Objective 2.3 of the CompTIA Network+ N10-008 certification exam1. Link aggregation can be used to connect two ports to the core switch to ensure

redundancy23.

Link aggregation can be configured using LACP or static methods23.

1: CompTIA Network+ Certification Exam Objectives, page 5 2: Interface Configurations ?N10-008 CompTIA Network+ : 2.3 3: CompTIA Network+ N10-008 Cert Guide, Chapter 11, page 323

Correct Answer: B

A wireless survey is the first step that a network administrator should do before adding access points to the network. A wireless survey is a process of collecting data about the wireless environment, such as signal strength, channel usage, interference, and coverage. A wireless survey can help the network administrator to determine the optimal locations and configurations for the access points to provide the best possible coverage and performance for the wireless network. A wireless survey can also help to identify and troubleshoot any issues that may cause improper coverage in some areas. https://www.cisco.com/c/en/us/support/docs/wireless/5500-series-wireless- controllers/116057-site-survey-guidelines-wlan-00.html