N10-009 Free Practice Questions — Page 7 (2026)

Question 57

A network administrator is troubleshooting an issue with a user's IP address. Which of the following layers of the OSI model should be considered?

A. Data link

B. Network

C. Session

D. Presentation

Show Answer

Correct Answer: B

Explanation:
IP addressing is a function of the OSI Network layer (Layer 3). Issues involving IP configuration, subnetting, gateways, or routing are therefore troubleshot at the Network layer.

Question 58

Which of the following cable types allows the use of QSFP ports without requiring transceivers?

A. Multimode

B. Twinaxial

C. RG11

D. Category 6

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Correct Answer: B

Explanation:
QSFP ports can use Direct Attach Copper (DAC) cables made with twinaxial cabling, which have QSFP connectors integrated at each end and therefore do not require separate transceiver modules. Other options either require transceivers or are not used with QSFP ports.

Question 59

A company has been added to an unapproved list because of spam. The network administrator confirmed that a workstation was infected by malware. Which of the following processes did the administrator use to identify the root cause?

A. Traffic analysis

B. Availability monitoring

C. Baseline metrics

D. Network discovery

Show Answer

Correct Answer: A

Explanation:
Identifying the root cause of spam originating from the network requires examining outbound network behavior to find the source system. Traffic analysis reveals abnormal SMTP traffic patterns, unusual volumes of outbound email, or connections to suspicious servers, allowing the administrator to pinpoint the malware-infected workstation. The other options focus on uptime, normal baselines, or device enumeration and do not directly identify malicious activity.

Question 60

A network administrator is configuring a wireless connection between two warehouses. Which of the following wireless network types would best accomplish this task?

A. Ad hoc

B. Infrastructure

C. Point-to-point

D. Mesh

Show Answer

Correct Answer: C

Explanation:
A point-to-point wireless network is ideal for connecting two fixed locations such as separate warehouses. It uses directional antennas to create a dedicated wireless bridge between the buildings, offering better reliability, higher bandwidth, and longer distance coverage than ad hoc, infrastructure, or mesh networks.

Question 61

A network technician is requesting a fiber patch cord with a connector that is round and twists to install. Which of the following is the proper name of this connector type?

A. ST

B. BNC

C. SC

D. LC

Show Answer

Correct Answer: A

Explanation:
The connector described is round and uses a bayonet-style twist-lock mechanism, which matches the ST (Straight Tip) fiber connector. BNC is a coaxial (not fiber) connector, while SC and LC are push-pull fiber connectors with square or small-form-factor designs, not twist-lock.

Question 62

Which of the following is associated with avoidance, acceptance, mitigation, and transfer?

A. Risk

B. Exploit

C. Threat

D. Vulnerability

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Correct Answer: A

Explanation:
Avoidance, acceptance, mitigation, and transfer are the four standard risk treatment (risk response) strategies in risk management. They describe how an organization handles risk, not threats, vulnerabilities, or exploits themselves.

Question 63

A technician is designing a cloud service solution that will accommodate the company's current size, compute capacity, and storage capacity. Which of the following cloud deployment models will fulfill these requirements?

A. SaaS

B. PaaS

C. IaaS

D. IaC

Show Answer

Correct Answer: C

Explanation:
The requirement focuses on accommodating current company size along with specific compute and storage capacity needs. Infrastructure as a Service (IaaS) provides configurable virtualized compute, storage, and networking resources, allowing the organization to size and manage these resources without owning physical hardware. SaaS and PaaS abstract away infrastructure control, and IaC is a management approach rather than a deployment model.

Question 64

Which of the following is concerned with guaranteed availability of a cloud resource?

A. IPAM

B. SLA

C. MTBF

D. EOL

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Correct Answer: B

Explanation:
Guaranteed availability of a cloud resource is defined contractually through a Service Level Agreement (SLA), which specifies uptime percentages, availability commitments, and remedies if those guarantees are not met. IPAM manages IP addresses, MTBF is a reliability metric, and EOL refers to product lifecycle, none of which guarantee availability.

Question 65

After a recent merger, a large number of alerts are coming in regarding extremely high utilization. Which of the following should be generated to help inform new alerting requirements?

A. SLA

B. Network diagram

C. Baseline

D. Heat map

Show Answer

Correct Answer: C

Explanation:
After a merger, utilization patterns change significantly. Generating a new baseline establishes what normal performance and utilization look like in the combined environment, allowing alert thresholds to be recalibrated appropriately. SLAs define service targets, network diagrams show topology, and heat maps visualize current usage but do not define normal operating levels over time.

Question 66

Users can usually use RDP to connect to a terminal server with hostname TS19 that points to 10.0.100.19. However, users recently have been unable to connect to TS19. The technician pings 10.0.100.19 and gets an unreachable error. Which of the following is the most likely cause?

A. The users are on the wrong subnet.

B. The DHCP server renewed the lease.

C. The IP address was not reserved.

D. The hostname was changed.

Show Answer

Correct Answer: C

Explanation:
Users cannot connect to the terminal server, and even a direct ping to 10.0.100.19 returns an unreachable error. This indicates the server is no longer reachable at that IP address. The most likely cause is that the terminal server was using DHCP without an IP reservation, so its address changed when the lease was renewed. As a result, 10.0.100.19 no longer belongs to the server, breaking both ping and RDP connectivity.