N10-008 practice questions 281–290

1. Question 281 · 871 in bank

   A technician is trying to install a VoIP phone, but the phone is not turning on. The technician checks the cable going from the phone to the switch, and the cable is good. Which of the following actions is needed for this phone to work?

   • AAdd a PoE injector.
   • BEnable MDIX.
   • CUse a crossover cable.
   • DReconfigure the port.

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   Answer: A

   Explanation

   A. Add a PoE injector. If the VoIP phone is not turning on despite a good cable connection, it's possible that the phone requires Power over Ethernet (PoE) to operate, and the switch it's connected to may not be providing PoE. Adding a PoE injector between the switch and the phone can provide the necessary power for the phone to function properly.

   Source: Adapted from community discussion — salah112

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2. Question 282 · 871 in bank

   Which of the following is MOST appropriate for enforcing bandwidth limits when the performance of an application is not affected by the use of buffering but is heavily impacted by packet drops?

   • ATraffic shaping
   • BTraffic policing
   • CTraffic marking
   • DTraffic classification

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   Answer: A

   Explanation

   The answer is definitely A, see below, or tldr policing = dropped packets, shaping = buffering, the question says to avoid drops and buffering is ok so shaping is correct Anthony Sequeira "Instead of making a minimum amount of bandwidth available for specific traffic types, you might want to limit available bandwidth. Both traffic policing and traffic shaping tools can accomplish this objective. Collectively, these tools are called traffic conditioners. Policing can be used in either the inbound or the outbound direction, and it typically discards packets that exceed the configured rate limit, which you can think of as a speed limit for specific traffic types. Because policing drops packets, resulting in re-transmissions, it is recommended for higher-speed interfaces. Shaping buffers (and therefore delays) traffic exceeding a configured rate. Therefore, shaping is recommended for slower-speed interfaces."

   Source: Adapted from community discussion — LeonardSnart

   References

   • Cisco documentation

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3. Question 283 · 871 in bank

   A client utilizes mobile tablets to view high-resolution images and videos via Wi-Fi within a corporate office building. The previous administrator installed multiple high-density APs with Wi-Fi 5, providing maximum coverage, but the measured performance is still below expected levels. Which of the following would provide the BEST solution?

   • AChannel bonding
   • BEIRP power settings
   • CAntenna polarization
   • DA directional antenna

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   Answer: A

   Explanation

   The answer should be A, only A can provide more throughput on the connection. A single 80MHz stream on WiFi 5 (AC) supports 433Mbps, so using a 160MHz stream will, you guessed it, support 866Mbps. Emmett Dulaney "Channel Bonding With channel bonding, you can use two channels at the same time. As you might guess, the ability to use two channels at once increases performance."

   Source: Adapted from community discussion — LeonardSnart

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4. Question 284 · 871 in bank

   A network technician is troubleshooting a new web server connectivity issue. The network technician discovers the following on the support ticket: • The server’s IP address can be pinged from the client PCs. • Access to the web resource works correctly when on the server's console. • No clients can access the server’s data via URL. • The server does not have a firewall configured. • No ACLs are preventing connectivity from the client's network. • All services on the server are operating normally, which was confirmed by the server team. Which of the following actions will resolve the issue?

   • AReset port security on the switchport connecting the server.
   • BAdjust the web server's NTP setting to match the client settings.
   • CConfigure A records for the web server.
   • DInstall the correct MIB on the web server.

   Show answer

   Answer: C

   Explanation

   C. Configure A records for the web server. The problem is likely related to DNS resolution, as the clients are able to ping the server's IP address but not access the web resource via URL. The other answers do not address this issue. Configuring A records for the web server will ensure that clients are able to access the web resource via its domain name.

   Source: Adapted from community discussion — JakeCharles

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5. Question 285 · 871 in bank

   Which of the following layers of the OSI model has new protocols activated when a user moves from a wireless to a wired connection?

   • AData link
   • BNetwork
   • CTransport
   • DSession

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   Answer: A

   Explanation

   A. Data link When a user moves from a wireless to a wired connection, new protocols are activated at the Data Link layer of the OSI model. This layer is where Ethernet protocols for wired connections and 802.11 protocols for wireless connections operate. The Data Link layer is responsible for node-to-node data transfer and detecting errors that may occur in the Physical layer below it. Switching from wireless to wired or vice versa involves changing the way data packets are framed and addressed at this layer.

   Source: Adapted from community discussion — WOW_ThatsCrazy

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6. Question 286 · 871 in bank

   A technician is assisting a user who cannot connect to a website. The technician attempts to ping the default gateway and DNS server of the workstation. According to troubleshooting methodology, this is an example of:

   • Aa divide-and-conquer approach.
   • Ba bottom-up approach.
   • Ca top-to-bottom approach.
   • Dimplementing a solution.

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   Answer: B

   Explanation

   What do you think? Jason Dion stated below; Now, we can do the exact same thing in our networks. If I'm trying to troubleshoot the internet is down issue for this end user, I could figure out what the halfway point is between their computer and the internet, which would probably be our default gateway. I could then try to send a ping from the end-user's computer to the default gateway. If it works, that means my internal network is functioning fully, and the problem exists between my default gateway and the internet connection or the distant web server. Now, this is my halfway point and with a single ping, I already verified the entire internal network is working from the end user, all the way up to the gateway. This is my DIVIDE and CONQUER APPROACH at work, also known as half-splitting if you use my terminology. If its a Bottom Approach, the question will state that they did check the Link Light of the Switch and the network interface card of the device.

   Source: Adapted from community discussion — pedrwc7

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7. Question 287 · 871 in bank

   Which of the following is the NEXT step to perform network troubleshooting after identifying an issue?

   • AImplement a solution.
   • BEstablish a theory.
   • CEscalate the issue.
   • DDocument the findings.

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   Answer: B

   Explanation

   1 Identify the Problem. 2 Develop a Theory. 3 Test the Theory. 4 Plan of Action. 5 Implement the Solution. 6 Verify System Functionality. 7 Document the Issue.

   Source: Adapted from community discussion — marmarhar1980

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8. Question 288 · 871 in bank

   A network team is getting reports that air conditioning is out in an IDF. The team would like to determine whether additional network issues are occurring. Which of the following should the network team do?

   • AConfirm that memory usage on the network devices in the IDF is normal.
   • BAccess network baseline data for references to an air conditioning issue.
   • CVerify severity levels on the corporate syslog server.
   • DCheck for SNMP traps from a network device in the IDF.
   • EReview interface statistics looking for cyclic redundancy errors.

   Show answer

   Answer: D

   Explanation

   This seems it could be either B or D, at first I thought it was D but now leaning towards B. I would think D would be more helpful but it might not show if there are "additional" network issues and just if things are about to overheat. Mainly last 2 sentences from below say B is probably correct. Emmett Dulaney "Baselines play an integral part in network documentation because they let you monitor the network’s overall performance. In simple terms, a baseline is a measure of performance that indicates how hard the network is working and where network resources are spent. The purpose of a baseline is to provide a basis of comparison. For example, you can compare the network’s performance results taken in March to results taken in June, or from one year to the next. More commonly, you would compare the baseline information at a time when the network is having a problem to information recorded when the network was operating with greater efficiency. Such comparisons help you determine whether there has been a problem with the network, how significant that problem is, and even where the problem lies."

   Source: Adapted from community discussion — LeonardSnart

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9. Question 289 · 871 in bank

   Which of the following is the MOST cost-effective alternative that provides proper cabling and supports gigabit Ethernet devices?

   • ATwisted cable with a minimum Cat 5e certification
   • BMultimode fiber with an SC connector
   • CTwinaxial cabling using an F-type connector
   • DCable termination using TIA/EIA-568-B

   Show answer

   Answer: A

   Explanation

   A. Twisted cable with a minimum Cat 5e certification Of the options given, twisted cable with a minimum Cat 5e certification would be the most cost-effective alternative that provides proper cabling and supports gigabit Ethernet devices. Cat 5e cable is capable of supporting data rates up to 1 Gbps over short distances, making it suitable for most gigabit Ethernet applications. It is also less expensive than other options such as multimode fiber with an SC connector.

   Source: Adapted from community discussion — StellarSteve

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10. Question 290 · 871 in bank

    A technician is troubleshooting a network switch that seems to stop responding to requests intermittently whenever the logging level is set for debugging. Which of the following metrics should the technician check to begin troubleshooting the issue?

    • AAudit logs
    • BCPU utilization
    • CCRC errors
    • DJitter

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    Answer: B

    Explanation

    A fun tip - Don't enable debugging on a production environment during business hours or you'll be looking for a new job. Answer is B :)

    Source: Adapted from community discussion — GeekSpunk

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N10-008 practice, question 281. 871 questions available.