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CompTIA Network+ Certification Exam actual questions - N10-009 torrent pdf - CompTIA Network+ Certification Exam training vce

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CompTIA N10-009 Exam Syllabus Topics:

Topic
Details

Topic 1

Cloud concepts and connectivity options, and Common networking ports.

Topic 2

Selection and configuration of wireless devices.

Topic 3

Networking Concepts: For network administrators and IT support professionals, this domain covers

CompTIA Network+ Certification Exam Sample Questions (Q325-Q330):

NEW QUESTION # 325
What is the most critical measure in data center design to prevent server overheating shutdowns due to air conditioning system downtime?

A. Configure door locks to automatically lock during power outages
B. Add an IoT-enabled thermostat
C. Increase UPS battery size
D. Include backup power for air-conditioning units

Answer: D

Explanation:
Servers shut down due to overheating, not loss of electrical power. Although UPS units had battery life, without cooling systems (HVAC/air conditioning) running on backup power, server rooms overheated.
Backup power for air-conditioning is essential in data center design.
* B. Door locks are unrelated to server shutdown.
* C. Increasing UPS capacity won't help cooling.
* D. IoT thermostats may monitor temperature but won't prevent overheating.
References (CompTIA Network+ N10-009):
* Domain: Network Infrastructure - Environmental controls, power redundancy, HVAC systems.

NEW QUESTION # 326
A user tries to visit a website, but instead of the intended site, the page displays vmw.cba.com. Which of the following should be done to reach the correct website?

A. Modify the CNAME record
B. Update the PTR record
C. Delete the TXT record
D. Change the NTP settings

Answer: A

Explanation:
A CNAME (Canonical Name) record maps an alias to the correct fully qualified domain name (FQDN). If a user is redirected to the wrong hostname, correcting or updating the CNAME ensures the alias points to the proper domain.
B . PTR record maps IP to hostname (reverse DNS), not forward website resolution.
C . NTP relates to time sync, irrelevant to DNS resolution.
D . TXT record stores metadata like SPF or DKIM info, not used for hostname aliasing.
Reference (CompTIA Network+ N10-009):
Domain: Network Standards, Protocols, and Implementations - DNS record types (A, AAAA, CNAME, PTR, TXT).

NEW QUESTION # 327
As part of an attack, a threat actor purposefully overflows the content-addressable memory (CAM) table on a switch. Which of the following types of attacks is this scenario an example of?

A. Evil twin
B. ARP spoofing
C. MAC flooding
D. DNS poisoning

Answer: C

Explanation:
* Definition of MAC Flooding:
* MAC flooding is an attack where a malicious actor sends numerous fake MAC addresses to a switch, overwhelming its CAM table. The CAM table stores MAC addresses and their associated ports for efficient traffic forwarding.
* Impact of MAC Flooding:
* CAM Table Overflow:When the CAM table is full, the switch cannot learn new MAC addresses and is forced to broadcast traffic to all ports, leading to a degraded network performance and potential data interception.
* Switch Behavior:The switch operates in a fail-open mode, treating the network as a hub, which can be exploited for eavesdropping on traffic.
* Comparison with Other Attacks:
* ARP Spoofing:Involves sending false ARP (Address Resolution Protocol) messages to associate the attacker's MAC address with the IP address of another device.
* Evil Twin:Involves creating a rogue wireless access point that mimics a legitimate one to intercept data.
* DNS Poisoning:Involves corrupting the DNS cache with false information to redirect traffic to malicious sites.
* Preventive Measures:
* Port Security:Configure port security on switches to limit the number of MAC addresses per port, preventing CAM table overflow.
* Network Segmentation:Use VLANs to segment network traffic and limit the impact of such attacks.
References:
* CompTIA Network+ study materials on network security threats and mitigation techniques.

NEW QUESTION # 328
Which of the following provides an opportunity for an on-path attack?

A. Phishing
B. Dumpster diving
C. Evil twin
D. Tailgating

Answer: C

Explanation:
An evil twin is a rogue Wi-Fi access point that mimics a legitimate network. Attackers use it to intercept and manipulate traffic, making it an on-path (formerly MITM) attack opportunity.
Breakdown of Options:
A: Phishing - Tries to steal credentials through fake emails/websites but does not intercept network traffic.
B: Dumpster diving - Involves physical security breaches, not network interception.
C: Evil twin - # Correct answer. A rogue Wi-Fi AP impersonates a real network, allowing traffic interception.
D: Tailgating - Involves physical access security, not network interception.
Reference:
CompTIA Network+ (N10-009) Official Study Guide - Domain 3.3: Explain common network security threats.

NEW QUESTION # 329
Which of the following should a company implement in order to share a single IP address among all the employees in the office?

A. BGP
B. PAT
C. VXLAN
D. STP

Answer: B

Explanation:
PAT (Port Address Translation) allows multiple devices on a local network to share a single public IP address when accessing the internet. It translates the private IP addresses to a single public IP with different port numbers for each session. The document states:
"PAT (Port Address Translation) allows multiple devices on a LAN to share a single public IP address by assigning unique port numbers to each session, enabling internet connectivity for all devices."

NEW QUESTION # 330
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