N10-009 practice questions 231–240

1. Question 231 · 610 in bank

   A storage network requires reduced overhead and increased efficiency for the amount of data being sent. Which of the following should an engineer most likely configure to meet these requirements?

   • ALink speed
   • BJumbo frames
   • CQoS
   • D802.1q tagging

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   Answer: B

   Explanation

   B. Jumbo frames Jumbo frames can encapsulate more data in a single frame, reducing the number of frames required for a given amount of data. This results in lower overhead per byte and improved overall network efficiency.

   Source: Adapted from community discussion — LadyBirdArchitect

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2. Question 232 · 610 in bank

   A security administrator is creating a new firewall object for a device with IP address 192.168.100.1/25. However, the firewall software only uses dotted decimal notation in configuration fields. Which of the following is the correct subnet mask to use?

   • A255.255.254.0
   • B255.255.255.1
   • C255.255.255.128
   • D255.255.255.192

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   Answer: C

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3. Question 233 · 610 in bank

   Users at an organization report that the wireless network is not working in some areas of the building. Users report that other wireless network SSIDs are visible when searching for the network, but the organization’s network is not displayed. Which of the following is the most likely cause?

   • AInterference or channel overlap
   • BInsufficient wireless coverage
   • CRoaming misconfiguration
   • DClient disassociation issues

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   Answer: B

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4. Question 234 · 610 in bank

   Which of the following disaster recovery metrics describes the average length of time a piece of equipment can be expected to operate normally?

   • ARPO
   • BRTO
   • CMTTR
   • DMTBF

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   Answer: D

   Explanation

   The correct answer is: D. MTBF (Mean Time Between Failures) Explanation: MTBF: This metric describes the average length of time a piece of equipment or system is expected to operate normally before a failure occurs. It is used to predict reliability and is critical in disaster recovery and maintenance planning. Why not the others? A. RPO (Recovery Point Objective): This measures the maximum amount of data that can be lost during a disruption, expressed in time. It focuses on data recovery. B. RTO (Recovery Time Objective): This refers to the maximum allowable downtime after a disaster to restore normal operations. C. MTTR (Mean Time to Repair): This measures the average time required to repair a failed piece of equipment or system and restore it to normal operation.

   Source: Adapted from community discussion — Vealbrevity

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5. Question 235 · 610 in bank

   A network administrator logs on to a router and sees an interface with an IP address of 10.61.52.34 255.255.255.252. Which of the following best describes how this interface IP address is being used?

   • AAs a point-to-point connection
   • BTo connect to the internet
   • CAs a virtual address for redundancy
   • DFor out-of-band management

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   Answer: A

   Explanation

   A. Point to point The IP address 10.61.52.34 with a subnet mask 255.255.255.252 corresponds to a very small subnet, which provides only 4 IP addresses in total. Specifically: The network address: 10.61.52.32 Usable host addresses: 10.61.52.33 and 10.61.52.34 Broadcast address: 10.61.52.35 Since this subnet allows for only two usable IP addresses, it is commonly used for point-to-point connections, such as connecting two routers or devices directly. In a point-to-point link, each device in the connection typically gets one of the two available IP addresses

   Source: Adapted from community discussion — HeatSquad77

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6. Question 236 · 610 in bank

   A network technician is troubleshooting a faulty NIC and tests the theory. Which of the following should the technician do next?

   • ADevelop a theory.
   • BEstablish a plan of action.
   • CImplement the solution.
   • DDocument the findings.

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   Answer: B

   Explanation

   B. Establish plan of action. Thiis is step four in the Basic Network Troubleshooting Steps. CompTia States: "Once you’ve confirmed your theory about the causes of the network issues, you’re in a position to solve them. Come up with a plan of action to address the problem. Sometimes your plan will include just one step. For example, restart the router. In other cases, your plan will be more complex and take longer, such as when you need to order a new part or roll a piece of software back to a previous version on multiple users’ computers." Referances: https://www.comptia.org/content/guides/a-guide-to-network-troubleshooting

   Source: Adapted from community discussion — Nanox

   References

   • comptia.org documentation

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7. Question 237 · 610 in bank

   A network administrator is configuring access points for installation in a dense environment where coverage is often overlapping. Which of the following channel widths should the administrator choose to help minimize interference in the 2.4GHz spectrum?

   • A11MHz
   • B20MHz
   • C40MHz
   • D80MHz
   • E160MHz

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   Answer: B

   Explanation

   20 MHz is absolutely correct. The wider the channel, the higher the risk that somewhere in its frequency range it will be hit with interference. Since 2.4 GHz is an especially crowded band, you want to avoid the risk of interference, even though it means that each mobile client will be stuck with less overall bandwidth for their connection

   Source: Adapted from community discussion — chrys

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8. Question 238 · 610 in bank

   A network technician is examining the configuration on an access port and notices more than one VLAN has been set. Which of the following best describes how the port is configured?

   • AWith a voice VLAN
   • BWith too many VLAN
   • CWith a default VLAN
   • DWith a native VLAN

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   Answer: A

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9. Question 239 · 610 in bank

   A network manager wants to view network traffic for devices connected to a switch. A network engineer connects an appliance to a free port on the switch and needs to configure the switch port connected to the appliance. Which of the following is the best option for the engineer to enable?

   • ATrunking
   • BPort mirroring
   • CFull duplex
   • DSNMP

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   Answer: B

   Explanation

   B. Port mirroring. Explanation: Port mirroring is a feature on network switches that allows network traffic from one or more ports to be copied (mirrored) to another port, where it can be monitored or analyzed by a network appliance (such as a network analyzer, IDS/IPS, or other monitoring device). In this scenario, the engineer needs to monitor network traffic for devices connected to a switch, which is exactly what port mirroring is designed for.

   Source: Adapted from community discussion — HeatSquad77

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10. Question 240 · 610 in bank

    A network administrator is in the process of installing 35 PoE security cameras. After the administrator installed and tested the new cables, the administrator installed the cameras. However, a small number of the cameras do not work. Which of the following is the most likely reason?

    • AIncorrect wiring standard
    • BPower budget exceeded
    • CSignal attenuation
    • DWrong voltage

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    Answer: B

    Explanation

    the network admin tested and verified that the cables are working. the cameras are new so they should not be having any hardware failures. correct answer is power budget has been exceeded

    Source: Adapted from community discussion — HeatSquad77

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N10-009 practice, question 231. 610 questions available.