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The CompTIA N10-009 certification is a valuable credential that plays a significant role in advancing the CompTIA professional's career in the tech industry. With the CompTIA Network+ Certification Exam (N10-009) certification exam you can demonstrate your skills and knowledge level and get solid proof of your expertise. You can use this proof to advance your career. The CompTIA N10-009 Certification Exam enables you to increase job opportunities, promotes professional development, and higher salary potential, and helps you to gain a competitive edge in your job search.
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NEW QUESTION # 200
Employees report that the network is slow. The network engineer thinks the performance issue is with an upstream router. Which of the following tools should the engineer use to determine the location of the issue?
Answer: D
Explanation:
Traceroute identifies each hop along the path to a destination, allowing the engineer to pinpoint where delays occur, while ping verifies reachability and measures latency to help confirm the problematic segment.
NEW QUESTION # 201
A network administrator for a small office is adding a passive IDS to its network switch for the purpose of inspecting network traffic. Which of the following should the administrator use?
Answer: B
Explanation:
Port mirroring, also known as SPAN (Switched Port Analyzer), is used to send a copy of network packets seen on one switch port (or an entire VLAN) to another port where the IDS is connected. This allows the IDS to passively inspect network traffic without interfering with the actual traffic flow. Port mirroring is an essential feature for implementing IDS in a network for traffic analysis and security monitoring.References:
CompTIA Network+ study materials.
NEW QUESTION # 202
A customer lost the connection to the telephone system. The administration console is configured with multiple network interfaces and is connected to multiple switches. The network administrator troubleshoots and verifies the following:
The support team is able to connect remotely to the administration console. Rebooting the switch shows solid link and activity lights even on unused ports. Rebooting the telephone system does not bring the system back online. The console is able to connect directly to individual modules successfully. Which of the following is the most likely reason the customer lost the connection?
Answer: C
NEW QUESTION # 203
Two network switches at different locations are connected via fiber-optic cable at a distance of 10 miles (16 km). The duplex fiber-optic patch cord between the patch panel and switch is accidentally pinched, stopping connectivity between the two switches. A network technician replaces the broken cable with a new, single-mode patch cord. However, connectivity between both switches is still down and the link lights are still off. Which of the following actions should the technician perform first?
Answer: C
Explanation:
Fiber connections require Tx on one end to connect to Rx on the other end. If the patch cord is replaced and link lights remain off, the most common cause is that the connectors are reversed. Swapping (transposing) the connectors ensures proper transmit/receive alignment.
A . Replacing the transceiver may eventually be necessary, but only after verifying correct connections.
B . Restarting the switchport won't resolve a physical misconnection.
D . Using multimode fiber would be incorrect here, as the link was designed for single-mode (10 miles/16 km requires SMF).
Reference (CompTIA Network+ N10-009):
NEW QUESTION # 204
A user tries to visit www.abc.com, but the website that displays is www.cba.com. Which of the following should be done in order to reach the correct website?
Answer: A
Explanation:
The correct answer is Modify the CNAME record because a CNAME (Canonical Name) record maps one domain name (alias) to another domain name. If a user enters www.abc.com but is redirected to www.cba.
com, it is likely that the DNS configuration includes an incorrect CNAME entry pointing abc.com to cba.com.
Updating or correcting the CNAME record ensures the alias resolves to the intended host.
According to CompTIA Network+ (N10-009) objectives covering DNS record types, a CNAME record is used to alias one domain name to another, commonly for load balancing, CDN services, or website redirection.
A PTR record (Option B) is used for reverse DNS lookups (IP address to hostname) and does not control forward name resolution for websites. NTP settings (Option C) are used for time synchronization and have no impact on DNS resolution. A TXT record (Option D) stores descriptive text information (such as SPF, DKIM, or domain verification data) and does not affect website redirection.
Therefore, correcting the CNAME record resolves the issue and ensures users reach the correct website.
NEW QUESTION # 205
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