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| Certification Vendor: | CompTIA |
|---|---|
| Exam Name: | CompTIA Network+ Certification Exam (N10-009) |
| Exam Number: | N10-009 |
| Exam Duration: | 90 minutes |
| Real Exam Qty: | Up to 90 |
| Available Languages: | Spanish, German, Thai, English, Japanese, Portuguese |
| Exam Format: | Multiple-choice, Performance-based questions, Multiple-response |
| Exam Price: | USD 358 (varies by region) |
| Passing Score: | 720 (on a scale of 100-900) |
| Certificate Validity Period: | 3 years |
| Related Certifications: | CompTIA A+ CompTIA Security+ |
| Recommended Training: | CertMaster Learn for Network+ CompTIA Network+ Training (Official) |
| Exam Registration: | Pearson VUE Exam Registration CompTIA Official Certification Page |
| 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 # 157
While troubleshooting connectivity issues, a junior network administrator is given explicit instructions to test the host's TCP/IP stack first. Which of the following commands should the network administrator run?
Answer: C
Explanation:
The loopback address (127.0.0.1) is used to test a host's local TCP/IP stack, ensuring that the networking components of the operating system are functioning properly.
* This test does not require network connectivity because it only checks if the local machine's TCP/IP stack is operational.
* If the loopback test fails, it indicates a misconfigured TCP/IP stack, corrupt drivers, or an issue with the OS networking components.
* Option B (ping 169.254.1.1) - This is an APIPA (Automatic Private IP Addressing) address, which is assigned when DHCP fails. It does not test the local TCP/IP stack.
* Option C (ping 172.16.1.1) and Option D (ping 192.168.1.1) - These are private network addresses and test connectivity to other devices, not the local TCP/IP stack.
? Reference: CompTIA Network+ (N10-009) Official Study Guide - Section: Troubleshooting Network Connectivity
NEW QUESTION # 158
A network administrator is proposing a new wireless implementation for an organization. The organization has the following requirements:
- Users should be able to connect anywhere in the facility.
- The network should be able to self-heal.
Which of the following network types should the network administrator propose?
Answer: D
Explanation:
A mesh network allows multiple wireless nodes to interconnect and dynamically reroute traffic if a node or link fails, providing continuous coverage across the facility and enabling automatic self- healing through alternate paths.
NEW QUESTION # 159
Which of the following allows an individual to access multiple websites using one set of credentials?
Answer: A
Explanation:
Single sign-on, or SSO, allows a user to access multiple applications, systems, or websites using one set of credentials. With SSO, the user authenticates once through an identity provider, and that authentication can then be trusted by multiple service providers. This improves user convenience, reduces password fatigue, and allows organizations to centralize authentication policies.
The CompTIA Network+ N10-009 objectives include authentication methods, identity and access management, and security concepts. SSO is commonly implemented using protocols or standards such as SAML, OAuth, or OpenID Connect, but SSO is the overall concept being described in the question.
SAML is a protocol often used for browser-based federated authentication, especially in enterprise environments. OpenID Connect is an authentication layer built on OAuth 2.0 and is also commonly used for federated login. However, both are implementation methods rather than the general capability described. A one-time password is a temporary authentication code, often used as part of multifactor authentication, but it does not by itself allow access to multiple websites using one credential set. Therefore, SSO is the correct answer.
NEW QUESTION # 160
A network administrator is configuring a wireless network with an ESSID. Which of the following is a user benefit of ESSID compared to SSID?
Answer: D
Explanation:
An Extended Service Set Identifier (ESSID) allows multiple access points to share the same SSID, enabling seamless roaming for users. This means that users can move between different access points within the same ESSID without losing connection or having to reauthenticate. This provides a better user experience, especially in large environments such as office buildings or campuses.References:CompTIA Network+ study materials.
NEW QUESTION # 161
A network engineer queries a hostname using dig, and a valid IP address is returned. However, when the engineer queries that same IP address using dig, no hostname is returned. Which of the following DNS records is missing?
Answer: D
Explanation:
This scenario describes a successful forward DNS lookup (hostname # IP address) but a failed reverse DNS lookup (IP address # hostname). Reverse lookups rely on a PTR (Pointer) record, which is stored in a reverse lookup zone (in-addr.arpa for IPv4, ip6.arpa for IPv6). If the engineer can resolve the hostname to an IP, that indicates an A record (or possibly AAAA for IPv6) exists and is functioning. But when querying the IP directly and receiving no hostname, the most likely issue is that the reverse mapping is not configured- meaning the PTR record is missing.
An MX record is used for mail exchange routing, not hostname resolution. A CNAME provides an alias from one hostname to another and does not create reverse mappings. An AAAA record maps a hostname to an IPv6 address; it is not used for reverse lookups of an IP to a name. Network+ objectives emphasize understanding common DNS record types and the difference between forward and reverse resolution, making PTR the correct missing record here.
NEW QUESTION # 162
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