N10-009 Free Practice Questions — Page 13 (2026)

Question 121

Which of the following is the best way to reduce the likelihood of electrostatic discharge?

A. Uninterruptable power supply

B. Surge protector

C. Power distribution units

D. Temperature and humidity control

Show Answer

Correct Answer: D

Explanation:
Electrostatic discharge is promoted by dry environments where static charge builds up more easily. Maintaining appropriate temperature and especially humidity reduces static buildup and lowers the likelihood of ESD. The other options protect against power quality issues rather than electrostatic discharge.

Question 122

Which of the following troubleshooting steps would provide a change advisory board with the information needed to make a decision?

A. Identify the problem.

B. Develop a theory of probable cause.

C. Test the theory to determine cause.

D. Establish a plan of action.

Show Answer

Correct Answer: D

Explanation:
A Change Advisory Board evaluates whether a proposed change should be approved. To make that decision, it needs the implementation approach, risk considerations, and related actions, which are provided when establishing a plan of action. The earlier troubleshooting steps identify and verify the issue but do not provide the change implementation details needed for CAB approval.

Question 123

A company recently implemented a videoconferencing system that utilizes large amounts of bandwidth. Users start reporting slow internet speeds and an overall decrease in network performance. Which of the following are most likely the causes of the network performance issues? (Choose two.)

A. DNS misconfiguration

B. Inadequate network security

C. Malware or a virus

D. Outdated software

E. Incorrect QoS settings

F. Network congestion

Show Answer

Correct Answer: E, F

Explanation:
A newly implemented videoconferencing system is bandwidth-intensive and commonly causes network congestion when available bandwidth is insufficient. Incorrect QoS settings can also contribute by failing to properly prioritize real-time voice/video traffic or by misallocating bandwidth, resulting in degraded overall network performance. DNS misconfiguration, inadequate security, malware, and outdated software are not the most direct causes given the scenario.

Question 124

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 Layer 3 (Network layer) function in the OSI model. Troubleshooting issues related to IP addresses, subnetting, gateways, or routing involves the Network layer.

Question 125

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

A. Multimode

B. Twinaxial

C. RG11

D. Category 6

Show Answer

Correct Answer: B

Explanation:
Twinaxial direct-attach copper (DAC) cables are available with integrated QSFP connectors, allowing QSFP ports to be connected without separate transceiver modules. Multimode fiber requires optical transceivers, RG11 is coaxial cable, and Category 6 is twisted-pair Ethernet cabling rather than a QSFP direct-attach solution.

Question 126

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:
Traffic analysis is the process most directly used to identify the source of spam and trace it to an infected workstation by examining network flows and suspicious outbound SMTP or other malicious traffic. Availability monitoring focuses on uptime, baseline metrics establish normal performance for comparison, and network discovery inventories devices rather than identifying the cause of malicious behavior.

Question 127

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 link is designed to connect two fixed locations, such as separate warehouses, using directional antennas to form a dedicated bridge. Ad hoc connects clients directly, infrastructure uses access points for client access within a WLAN, and mesh is intended for multi-node resilient coverage rather than a dedicated building-to-building link.

Question 128

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 ST (Straight Tip) fiber connector has a round body and uses a bayonet-style twist-lock mechanism to install. SC and LC are push-pull fiber connectors, while BNC is a bayonet connector used for coaxial cable rather than fiber.

Question 129

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 standard risk treatment (risk response) strategies used in risk management. They describe how an organization chooses to handle identified risks, not threats, vulnerabilities, or exploit actions.

Question 130

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:
IaaS (Infrastructure as a Service) provides scalable virtualized compute, storage, and networking resources, allowing an organization to size infrastructure to its current needs while expanding later. SaaS delivers finished software, PaaS provides an application development platform, and IaC is an automation approach rather than a cloud deployment/service model.