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| Certification Vendor: | CompTIA |
|---|---|
| Exam Name: | CompTIA Network+ Certification Exam |
| Exam Number: | N10-009 |
| Exam Duration: | 90 minutes |
| Exam Format: | Performance-based questions, Multiple-choice |
| Real Exam Qty: | Up to 90 |
| Related Certifications: | CompTIA Cloud+ CompTIA Server+ CompTIA A+ CompTIA Security+ |
| Certificate Validity Period: | 3 years |
| Available Languages: | Portuguese, English, Spanish, Japanese, German |
| Exam Price: | $369 USD |
| Passing Score: | 720 (scale 100β900) |
| Recommended Training: | CompTIA Official Training CompTIA Study Materials |
| Exam Registration: | CompTIA Official Registration Pearson VUE Exam Scheduling |
| Sample Questions: | CompTIA N10-009 Sample Questions |
| Exam Way: | Online remote proctored or onsite at authorized Pearson VUE test centers |
| Pre Condition: | No mandatory prerequisites; recommended: CompTIA A+ certification and 9β12 months of hands-on networking experience |
| Official Syllabus URL: | https://www.comptia.org/en-us/certifications/network/ |
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NEW QUESTION # 361
A firewall administrator is mapping a server's internal IP address to an external IP address for public use.
Which of the following is the name of this function?
Answer: C
Explanation:
Network Address Translation (NAT) is a process that allows a device, typically a firewall or router, to map private IP addresses to public IP addresses. This enables internal network devices to communicate over the internet using a single or a limited number of public IP addresses.
Static NAT (One-to-One Mapping): Maps a single private IP address to a single public IP address, commonly used for servers that need to be accessible from the internet.
Dynamic NAT (Many-to-Many Mapping): Dynamically assigns a public IP from a pool to internal devices.
PAT (Port Address Translation): A type of NAT where multiple private IPs share a single public IP using different port numbers.
Incorrect Options:
B:VIP (Virtual IP Address): Used in load balancing and high-availability configurations, not for NAT.
C:PAT (Port Address Translation): A specific form of NAT, but the question refers to general NAT, making option A the best choice.
D:BGP (Border Gateway Protocol): A routing protocol used to exchange information between different networks, not related to NAT.
NEW QUESTION # 362
A network technician installs a new 19.7ft (6m), Cat 6, UTP cable for the connection between a server and a switch. Communication to the server is degraded, and the NIC statistics show dropped packets and CRC errors. Which of the following cables would the technician most likely use instead to reduce the errors?
Answer: D
Explanation:
The errors described -- dropped packets and CRC (Cyclic Redundancy Check) errors -- often indicate electromagnetic interference (EMI) on unshielded twisted pair (UTP) cabling. The correct replacement is STP (Shielded Twisted Pair), which has shielding that protects signals from external interference, ensuring better reliability in noisy environments such as data centers or near heavy electrical equipment.
NEW QUESTION # 363
Which of the following would describe a data recovery goal?
Answer: C
Explanation:
RPO (Recovery Point Objective) describes a data recovery goal by defining the maximum acceptable amount of data loss measured in time. For example, an RPO of 4 hours means the organization must be able to restore data to a point no more than four hours before the outage-so backups, replication, or snapshots must occur frequently enough to meet that target. In Network+ (N10-009) operations objectives, disaster recovery and business continuity concepts include understanding recovery metrics and how they influence backup strategies, replication design, and service resilience planning. RPO specifically answers: "How much data can we afford to lose?" By contrast, MTBF (Mean Time Between Failures) is a reliability metric describing how often failures occur. MTTR (Mean Time To Repair/Recover) measures how long it takes to restore a system after failure, which is more aligned with service restoration time rather than data loss. BCP (Business Continuity Plan) is the overall plan/process for keeping critical business functions running during disruptions; it is not a single data recovery metric. Therefore, RPO is the correct term for a data recovery goal.
NEW QUESTION # 364
Which of the following is used to estimate the average life span of a device?
Answer: D
Explanation:
* Understanding MTBF:
* Mean Time Between Failures (MTBF): A reliability metric that estimates the average time between successive failures of a device or system.
* Calculation and Importance:
* Calculation: MTBF is calculated as the total operational time divided by the number of failures during that period.
* Usage: Used by manufacturers and engineers to predict the lifespan and reliability of a device, helping in maintenance planning and lifecycle management.
* Comparison with Other Metrics:
* RTO (Recovery Time Objective): The maximum acceptable time to restore a system after a failure.
* RPO (Recovery Point Objective): The maximum acceptable amount of data loss measured in time.
* MTTR (Mean Time to Repair): The average time required to repair a device or system and return it to operational status.
* Application:
* MTBF is crucial for planning maintenance schedules, spare parts inventory, and improving the overall reliability of systems.
NEW QUESTION # 365
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: B
Explanation:
Comprehensive and Detailed In-Depth 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 # 366
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