N10-008 practice questions 211–220

1. Question 211 · 871 in bank

   A device is connected to a managed Layer 3 network switch. The MAC address of the device is known, but the static IP address assigned to the device is not. Which of the following features of a Layer 3 network switch should be used to determine the IPv4 address of the device?

   • AMAC table
   • BNeighbor Discovery Protocol
   • CARP table
   • DIPConfig
   • EACL table

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   Answer: C

   Explanation

   The only two options that deal with MACs are the MAC table and ARP table. A MAC table works on layers 1 and 2, mapping physical ports to MAC addresses, while an ARP table works on layers 2 and 3 to map MACs to IPs. Therefore the answer is ARP table.

   Source: Adapted from community discussion — Cyali

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2. Question 212 · 871 in bank

   Which of the following BEST describes a network appliance that warns of unapproved devices that are accessing the network?

   • AFirewall
   • BAP
   • CProxy server
   • DIDS

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   Answer: D

   Explanation

   - IDS stands for Intrusion Detection System. It is a type of security software designed to detect unauthorised access to, or attacks on, a computer network. IDS works by monitoring network traffic and looking for signs of malicious activity, such as suspicious network packets, unusual traffic patterns, or attempts to exploit vulnerabilities in the network or in specific systems. - The goal of IDS is to provide early warning of potential security threats and to help prevent attacks before they can cause damage.

   Source: Adapted from community discussion — StevenElev11n

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3. Question 213 · 871 in bank

   Which of the following is the IEEE link cost for a Fast Ethernet interface in STP calculations?

   • A2
   • B4
   • C19
   • D100

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   Answer: C

   Explanation

   chatGPT says its 19. "In Spanning Tree Protocol (STP) calculations, the IEEE link cost for a Fast Ethernet interface is typically 19. The link cost is a value assigned to each port on a network switch based on the speed of the interface. It is used by STP to determine the path cost and select the best path to the root bridge. Here are the link cost values commonly used in STP calculations: 10 Mbps Ethernet: 100 100 Mbps Fast Ethernet: 19 1 Gbps Gigabit Ethernet: 4 10 Gbps 10 Gigabit Ethernet: 2 40 Gbps 40 Gigabit Ethernet: 1 100 Gbps 100 Gigabit Ethernet: 1 So, for a Fast Ethernet interface (100 Mbps), the IEEE link cost is 19."

   Source: Adapted from community discussion — coolwhip

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4. Question 214 · 871 in bank

   Two users on a LAN establish a video call. Which of the following OSI model layers ensures the initiation, coordination, and termination of the call?

   • ASession
   • BPhysical
   • CTransport
   • DData link

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   Answer: A

   Explanation

   The Session layer of the OSI model is responsible for managing and controlling the communication sessions between devices. This layer establishes, manages, and terminates sessions between applications. In a video call scenario, the Session layer is responsible for initiating, coordinating, and terminating the call between the two users. It sets up the call, manages the conversation, and closes the session when the call is complete. Therefore, the Session layer ensures the initiation, coordination, and termination of the call in this scenario.

   Source: Adapted from community discussion — StellarSteve

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5. Question 215 · 871 in bank

   A network administrator received a report stating a critical vulnerability was detected on an application that is exposed to the internet. Which of the following is the appropriate NEXT step?

   • ACheck for the existence of a known exploit in order to assess the risk.
   • BImmediately shut down the vulnerable application server.
   • CInstall a network access control agent on the server.
   • DDeploy a new server to host the application.

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   Answer: A

   Explanation

   The appropriate next step in this situation would be to check for the existence of a known exploit in order to assess the risk. This is important because it will help the network administrator determine the severity of the vulnerability and the potential impact it could have on the organization. Once the network administrator has assessed the risk, they can then take appropriate action to address the vulnerability. This might include patching the application, deploying a new server to host the application, or implementing other security measures to mitigate the risk. It is generally not advisable to immediately shut down the vulnerable application server, as this could disrupt business operations and cause significant downtime. Similarly, installing a network access control agent on the server may not be the most effective solution, as it would not address the underlying vulnerability.

   Source: Adapted from community discussion — JakeCharles

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6. Question 216 · 871 in bank

   A company is utilizing multifactor authentication for data center access. Which of the following is the MOST effective security mechanism against physical intrusions due to stolen credentials?

   • ABiometrics security hardware
   • BAccess card readers
   • CAccess control vestibule
   • DMotion detection cameras

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   Answer: A

   Explanation

   A. Biometrics security hardware is the most effective security mechanism against physical intrusions due to stolen credentials as biometric authentication uses unique biological characteristics like fingerprints, iris patterns, or facial recognition to confirm a person's identity, making it difficult for an unauthorized user to gain access even if they have stolen credentials. Access card readers and access control vestibules provide an additional layer of security, but they can be compromised by stolen access credentials. Motion detection cameras can help detect physical intrusions, but they do not provide any authentication mechanism.

   Source: Adapted from community discussion — StellarSteve

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7. Question 217 · 871 in bank

   A help desk technician is concerned that a client's network cable issues may be causing intermittent connectivity. Which of the following would help the technician determine if this is the issue?

   • ARun the show interface command on the switch.
   • BRun the traceroute command on the server.
   • CRun iperf on the technician's desktop.
   • DPing the client's computer from the router.
   • ERun a port scanner on the client's IP address.

   Show answer

   Answer: A

   Explanation

   Mike Meyers "Cisco routers and switches have a show interfaces IOS command that provides interface statistics/status information, including link state (up/down), speed/duplex, send/receive traffic, cyclic redundancy checks (CRCs), and protocol packet and byte counts."

   Source: Adapted from community discussion — LeonardSnart

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8. Question 218 · 871 in bank

   An ISP is unable to provide services to a user in a remote area through cable and DSL. Which of the following is the NEXT best solution to provide services without adding external infrastructure?

   • AFiber
   • BLeased line
   • CSatellite
   • DMetro optical

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   Answer: C

   Explanation

   C. Satellite. Satellite internet is a reliable alternative when cable and DSL services are unavailable in remote areas. With satellite internet, the user can connect to the internet via a satellite signal and a satellite dish. This is often the most cost-effective and practical option for remote areas where other types of internet services are not feasible due to distance or lack of infrastructure.

   Source: Adapted from community discussion — StellarSteve

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9. Question 219 · 871 in bank

   A new global ISP needs to connect from central offices in North America to the United Kingdom. Which of the following would be the BEST cabling solution for this project?

   • ASingle-mode
   • BCoaxial
   • CCat 6a
   • DTwinaxial

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   Answer: A

   Explanation

   How do I access Liverpool's webserver that is in UK whereas I am in Africa? A Single-Mode Fiber Optic cable that is buried down the ocean-bed mate

   Source: Adapted from community discussion — Motaki

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10. Question 220 · 871 in bank

    A network engineer developed a plan of action to resolve an ongoing issue. Which of the following steps should the engineer take NEXT?

    • AVerify full system functionality and implement preventative measures.
    • BImplement the solution to resolve the problem.
    • CDocument findings, actions, outcomes, and lessons learned.
    • DEstablish a theory of probable cause.

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    Answer: B

    Explanation

    Network troubleshooting is a repeatable process, which means that you can break it down into clear steps that anyone can follow. Identify the Problem. ... Develop a Theory. ... Test the Theory. ... Plan of Action. ... Implement the Solution. ... Verify System Functionality. ... Document the Issue. Theory of probable cause is before Plan of action. https://www.comptia.org/content/guides/a-guide-to-network-troubleshooting

    Source: Adapted from community discussion — Nishkurup

    References

    • comptia.org documentation

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N10-008 practice, question 211. 871 questions available.