CompTIA N10-008 Online Practice Questions and Exam Preparation

CompTIA N10-008 Online Questions & Answers

• Question 891:

  A technician is troubleshooting a workstation's network connectivity and wants to confirm which switchport corresponds to the wall jack the PC is using. Which of the following concepts would BEST help the technician?

  A. Consistent labeling
  B. Change management
  C. Standard work instructions
  D. Inventory management
  E. Network baseline
  A. Consistent labeling

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  Explanation/Reference:

  Consistent labeling would be the concept that would best help the technician to confirm which switchport corresponds to the wall jack the PC is using. Consistent labeling is a practice of using standardized and descriptive labels for network devices, ports, cables, jacks, and other components. It can help with identifying, locating, and troubleshooting network issues. For example, a technician can use consistent labeling to trace a cable from a PC to a wall jack, and then from a patch panel to a switchport.

  References: https://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Data_Center/DC_Infra2_5/DCIn fra_6.html

• Question 892:

  Which of the following describes a situation in which an employee knowingly allows someone access to a restricted area without verifying authentication?

  A. Piggybacking
  B. Tailgating
  C. Shoulder surfing
  D. Phishing
  A. Piggybacking

• Question 893:

  A network technician is manually configuring the network settings for a new device and is told the network block is 192.168.0.0/20. Which of the following subnets should the technician use?

  A. 255.255.128.0
  B. 255.255.192.0
  C. 255.255.240.0
  D. 255.255.248.0
  C. 255.255.240.0

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  Explanation/Reference:

  192.168.0.0/20 CIDR is in the third octet. /1-8 (1st octet), /9-16 (2nd octet), /17-24 (3rd octet), /25-32 (4th octet). /17 = 128 /18 = 192 /19 = 224 /20 = 240 is the answer /21 = 248 /22 = 252 /23 = 254 /24 = 255

• Question 894:

  A junior network administrator is auditing the company network and notices incrementing input errors on a long-range microwave interface. Which of the following is the most likely reason for the errors?

  A. The parabolic signal is misaligned.
  B. The omnidirectional signal is being jammed.
  C. The omnidirectional signal is not strong enough to receive properly.
  D. The parabolic signal uses improper routing protocols.
  A. The parabolic signal is misaligned.

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  Explanation/Reference:

  A long-range microwave interface is a type of wireless communication that uses high- frequency radio waves to transmit and receive data over long distances. A long-range microwave interface typically uses a parabolic antenna, also known as a dish antenna, to focus the radio waves into a narrow beam that can travel farther and with less interference than an omnidirectional antenna, which radiates the radio waves in all directions1. One of the most common causes of input errors on a long-range microwave interface is the misalignment of the parabolic antenna. Input errors are errors that occur when the receiver cannot properly decode or process the incoming signal. If the parabolic antenna is not aligned correctly with the transmitter, the receiver may not be able to capture the full strength of the signal, or it may pick up unwanted noise or interference from other sources. This can result in corrupted or lost data, which will increase the input error count23. To troubleshoot this issue, the junior network administrator should check the alignment of the parabolic antenna and make sure it is pointing directly at the transmitter. The administrator can use tools such as a spectrum analyzer, a signal strength meter, or a path alignment tool to measure and adjust the signal quality and alignment of the antenna24. The other options are not likely reasons for the input errors on a long-range microwave interface. A long-range microwave interface does not use an omnidirectional signal, so it cannot be jammed or weakened by other sources. The parabolic signal does not depend on the routing protocols used by the network, so it cannot be affected by improper routing protocols.

• Question 895:

  An administrator is attempting to add a new system to monitoring but is unsuccessful. The administrator notices the system is similar to another one on the network; however, the new one has an updated OS version. Which of the following should the administrator consider updating?

  A. Management information bases
  B. System baseline
  C. Network device logs
  D. SNMP traps
  A. Management information bases

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  Explanation/Reference:

  The MIBs contain information about the objects that can be managed on a device and their attributes. An updated OS version on the new system may have introduced changes to these objects and their attributes, so updating the MIBs would ensure that the monitoring system can accurately monitor the new system. The system baseline, network device logs, and SNMP traps may also be important, but updating the MIBs should be the first step in addressing the issue with adding the new system to monitoring.

• Question 896:

  A network administrator is planning to implement device monitoring to enhance network visibility. The security team requires that the solution provides authentication and encryption.

  Which of the following meets these requirements?

  A. SIEM
  B. Syslog
  C. NetFlow
  D. SNMPv3
  D. SNMPv3

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  Explanation/Reference:

  SNMPv3 is a protocol that allows network administrators to monitor and manage network devices such as routers, switches, servers, printers, and more. SNMPv3 provides authentication and encryption features that ensure the security and

  integrity of the data exchanged between the management station and the network devices. SNMPv3 uses a user-based security model (USM) that supports three levels of security: noAuthNoPriv, authNoPriv, and authPriv. The noAuthNoPriv

  level provides no authentication or encryption, the authNoPriv level provides authentication but no encryption, and the authPriv level provides both authentication and encryption12.

  References

  SNMP is one of the common network monitoring protocols covered in Objective 3.1 of the CompTIA Network+ N10-008 certification exam3. SNMPv3 provides authentication and encryption features for network monitoring12.

  SNMPv3 uses a user-based security model with three levels of security12.

  1: SNMP - N10-008 CompTIA Network+ : 3.1 - Professor Messer IT Certification Training Courses 2: CompTIA Network+ N10-008 Cert Guide, Chapter 13, page 413 3: CompTIA Network+ Certification Exam Objectives, page 7

• Question 897:

  An employee working in a warehouse facility is experiencing interruptions in mobile applications while walking around the facility. According to a recent site survey, the WLAN comprises autonomous APs that are directly connected to the internet, providing adequate signal coverage. Which of the following is the BEST solution to improve network stability?

  A. Implement client roaming using an extended service deployment employing a wireless controller.
  B. Remove omnidirectional antennas and adopt a directional bridge.
  C. Ensure all APs of the warehouse support MIMO and Wi-Fi 4.
  D. Verify that the level of EIRP power settings is set to the maximum permitted by regulations.
  A. Implement client roaming using an extended service deployment employing a wireless controller.

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  Explanation/Reference:

  Client roaming refers to the ability of a wireless device to seamlessly connect to a different access point (AP) as the user moves around the facility. This can help to improve network stability and reduce interruptions in mobile applications. An extended service deployment is a type of wireless network configuration that uses multiple APs to cover a large area, such as a warehouse facility. By using a wireless controller to manage the APs, the network can be better optimized for client roaming, which can improve network stability.

  "Roaming With multiple WAPs in an ESS, clients will connect to whichever WAP has the strongest signal. As clients move through the space covered by the broadcast area, they will change WAP connections seamlessly, a process called roaming."

• Question 898:

  A new student is given credentials to log on to the campus Wi-Fi. The student stores the password in a laptop and is able to connect; however, the student is not able to connect with a phone when only a short distance from the laptop. Given the following information:

  

  Which of the following is MOST likely causing this connection failure?

  A. Transmission speed
  B. Incorrect passphrase
  C. Channel overlap
  D. Antenna cable attenuation/signal loss
  B. Incorrect passphrase

• Question 899:

  A wireless network technician is receiving reports from some users who are unable to see both of the corporate SSIDs on their mobile devices. A site survey was recently commissioned, and the results verified acceptable RSSI from both APs in all user areas. The APs support modern wireless standards and are all broadcasting their SSIDs. The following table shows some of the current AP settings:

  

  Which of the following changes would result in all of the user devices being capable of seeing both corporate SSIDs?

  A. Implementing the WPA2 Enterprise authentication standard
  B. Implementing omnidirectional antennas for both APs
  C. Configuring the highest power settings for both APs
  D. Configuring both APs to use the 802.11ac wireless standard
  B. Implementing omnidirectional antennas for both APs

• Question 900:

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

  A. Data link
  B. Network
  C. Transport
  D. Session
  A. Data link

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  Explanation/Reference:

  "The Data Link layer also determines how data is placed on the wire by using an access method. The wired access method, carrier-sense multiple access with collision detection (CSMA/CD), was once used by all wired Ethernet networks, but is automatically disabled on switched full-duplex links, which have been the norm for decades. Carrier- sense multiple access with collision avoidance (CSMA/CA) is used by wireless networks, in a similar fashion."