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| Certification Vendor: | CompTIA |
|---|---|
| Exam Name: | CompTIA Network+ Certification Exam (N10-009) |
| Exam Number: | N10-009 |
| Passing Score: | 720 (on a scale of 100-900) |
| Exam Format: | Performance-based questions, Multiple-response, Multiple-choice |
| Certificate Validity Period: | 3 years |
| Related Certifications: | CompTIA Security+ CompTIA A+ |
| Real Exam Qty: | Up to 90 |
| Exam Price: | USD 358 (varies by region) |
| Available Languages: | English, Spanish, Portuguese, Thai, Japanese, German |
| Exam Duration: | 90 minutes |
| Recommended Training: | CompTIA Network+ Training (Official) CertMaster Learn for Network+ |
| Exam Registration: | CompTIA Official Certification Page Pearson VUE Exam Registration |
| Sample Questions: | CompTIA N10-009 Sample Questions |
| Exam Way: | Online proctored or test center (Pearson VUE) |
| Pre Condition: | No mandatory prerequisites, but CompTIA A+ or equivalent knowledge is recommended |
| Official Syllabus URL: | https://www.comptia.org/certifications/network |
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NEW QUESTION # 151
A company's network is experiencing high latency and packet loss during peak hours. Network monitoring tools show increased traffic on a switch. Which of the following should a network technician implement to reduce the network congestion and improve performance?
Answer: D
Explanation:
Quality of Service (QoS): This is a feature used in networking to prioritize certain types of traffic. By configuring QoS, network administrators can allocate higher bandwidth to time-sensitive applications like VoIP, video conferencing, or critical business applications during peak usage times. This helps to reduce latency and packet loss, which are often caused by congestion.
Load Balancing (A): While load balancing is useful in distributing traffic across multiple servers or paths, it does not address congestion on a single switch.
Port Mirroring (B): This is used for monitoring network traffic for troubleshooting and diagnostics but does not alleviate congestion.
Spanning Tree Protocol (D): STP prevents switching loops in redundant network topologies, but it is not designed to handle traffic prioritization or congestion issues.
Reference: CompTIA Network+ Official Study Guide, Domain 1.5 (Network Optimization), Domain 2.1 (Network Management).
NEW QUESTION # 152
Which of the following is considered a valid second factor for multi-factor authentication (MFA)?
Answer: A
Explanation:
Multi-factor authentication (MFA) requires two or more different categories of authentication factors:
* Something you know (password, PIN)
* Something you have (smart card, hardware token)
* Something you are (biometric)
The only valid second factor here is a hard token (e.g., a key fob generating one-time codes).
* A. PIN is still "something you know," the same category as a password.
* B. Favorite color is a weak knowledge-based factor, not a true second factor.
* D. Mother's maiden name is also "something you know" and insecure.
References (CompTIA Network+ N10-009):
* Domain: Network Security - Authentication methods, MFA factor categories.
NEW QUESTION # 153
A network engineer configures a new switch and connects it to an existing switch for expansion and redundancy. Users immediately lose connectivity to the network. The network engineer notes the following spanning tree information from both switches:
Switch 1
Port State Cost
1 Forward 2
2 Forward 2
Switch 2
Port State Cost
1 Forward 2
2 Forward 2
Which of the following best describes the issue?
Answer: A
Explanation:
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.
NEW QUESTION # 154
A user is unable to navigate to a website because the provided URL is not resolving to the correct IP address. Other users are able to navigate to the intended website without issue. Which of the following is most likely causing this issue?
Answer: B
Explanation:
ANS
Explanation:
Role of the Hosts File:
The hosts file is a local file on a computer that maps hostnames to IP addresses. It can be used to override DNS resolution by providing a static mapping of a hostname to an IP address.
Common Issues with the Hosts File:
If an incorrect IP address is mapped to a hostname in the hosts file, it can cause the computer to resolve the hostname to the wrong IP address. This can lead to navigation issues for specific websites while other users, relying on DNS, do not face the same problem.
Why Other Options are Less Likely:
Self-signed certificate: Relates to SSL/TLS and would cause a security warning, not a navigation failure.
Nameserver record: Affects all users, not just one.
IP helper: Used to forward DHCP requests and is unrelated to DNS resolution issues.
Troubleshooting Steps:
Check the hosts file on the affected user's computer (C:\Windows\System32\drivers\etc\hosts on Windows or /etc/hosts on Unix/Linux).
Look for entries that map the problematic hostname to an incorrect IP address and correct or remove them.
Reference:
CompTIA Network+ study materials and system administration documentation.
NEW QUESTION # 155
An attacker follows an employee through a badge-secured door before the door closes. Which of the following types of attacks is occurring?
Answer: C
NEW QUESTION # 156
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