CompTIA CompTIA Certifications N10-008 Questions & Answers

• Question 741:

  A network technician is investigating an issue with a desktop that is not connecting to the network. The desktop was connecting successfully the previous day, and no changes were made to the environment. The technician locates the switchport where the device is connected and observes the LED status light on the switchport is not lit even though the desktop is turned on Other devices that arc plugged into the switch are connecting to the network successfully. Which of the following is MOST likely the cause of the desktop not connecting?

  A. Transceiver mismatch

  B. VLAN mismatch

  C. Port security

  D. Damaged cable

  E. Duplex mismatch

  Correct Answer: D

  A damaged cable is most likely the cause of the desktop not connecting to the network. A damaged cable can cause physical layer issues such as loss of signal, attenuation, interference, or crosstalk. These issues can prevent the desktop from establishing a link with the switch and result in the LED status light on the switchport being off. Other possible causes of physical layer issues are faulty connectors, ports, or transceivers.

  References: https://www.cisco.com/c/en/us/support/docs/lan-switching/ethernet/14119-37.html

• Question 742:

  A company that uses VoIP telephones is experiencing intermittent issues with one-way audio and dropped conversations The manufacturer says the system will work if ping times are less than 50ms. The company has recorded the following ping times:

  

  Which of the following is MOST likely causing the issue?

  A. Attenuation

  B. Latency

  C. VLAN mismatch

  D. Jitter

  Correct Answer: D

  Jitter is most likely causing the issue of intermittent one-way audio and dropped conversations for the company that uses VoIP telephones. Jitter is a variation in delay of packets arriving at the destination. It can cause choppy or distorted audio quality for VoIP applications, especially over WAN links that have limited bandwidth and high latency. The recommended jitter for VoIP is less than 10ms1. The company has recorded ping times that exceed 50ms, which indicates high jitter and latency on their network. References: https://www.voip-info.org/voip-jitter/

• Question 743:

  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

  Correct Answer: A

  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 744:

  Given the following output:

  

  Which of the following attacks is this MOST likely an example of?

  A. ARP poisoning

  B. VLAN hopping

  C. Rogue access point

  D. Amplified DoS

  Correct Answer: A

  The output is most likely an example of an ARP poisoning attack. ARP poisoning, also known as ARP spoofing, is a type of attack that exploits the ARP protocol to associate a malicious device's MAC address with a legitimate IP address on a local area network. This allows the attacker to intercept, modify, or redirect network traffic between two devices without their knowledge. The output shows that there are multiple entries for the same IP address (192.168.1.1) with different MAC addresses in the ARP cache of the device. This indicates that an attacker has sent fake ARP replies to trick the device into believing that its MAC address is associated with the IP address of another device (such as the default gateway). References: https://www.cisco.com/c/en/us/about/security-center/arp- spoofing.html

• Question 745:

  A network technician is installing an analog desk phone for a new receptionist After running a new phone line, the technician now needs to cnmp on a new connector. Which of the following connectors would MOST likely be used in this case?

  A. DB9

  B. RJ11

  C. RJ45

  D. DB25

  Correct Answer: B

  RJ11 as discussed before was widely used in analog telephony to connect the phone instrument and the cable.

• Question 746:

  A Chief Information Officer (CIO) wants to improve the availability of a company's SQL database. Which of the following technologies should be utilized to achieve maximum availability?

  A. Clustering

  B. Port aggregation

  C. NIC teaming

  D. Snapshots

  Correct Answer: A

  Clustering is a technique that involves grouping multiple servers or instances together to provide high availability and fault tolerance for a database. Clustering can help improve the availability of a SQL database by allowing automatic failover

  and load balancing between the cluster nodes. If one node fails or becomes overloaded, another node can take over the database operations without disrupting the service.

  References: https://www.educba.com/sql-cluster/

• Question 747:

  A wireless network was installed in a warehouse for employees to scan crates with a wireless handheld scanner. The wireless network was placed in the corner of the building near the ceiling for maximum coverage However users in the offices adjacent lo the warehouse have noticed a large amount of signal overlap from the new network Additionally warehouse employees report difficulty connecting to the wireless network from the other side of the building; however they have no issues when Ihey are near the antenna.

  Which of the following is MOST likely the cause?

  A. The wireless signal is being refracted by the warehouse's windows

  B. The antenna's power level was set too high and is overlapping

  C. An omnidirectional antenna was used instead of a unidirectional antenna

  D. The wireless access points are using channels from the 5GHz spectrum

  Correct Answer: C

  An omnidirectional antenna was used instead of a unidirectional antenna, which is most likely the cause of the wireless network issues. An omnidirectional antenna provides wireless coverage in all directions from the antenna, which can cause signal overlap with adjacent offices and interference with other wireless networks. A unidirectional antenna, on the other hand, provides wireless coverage in a specific direction from the antenna, which can reduce signal overlap and interference and increase signal range and quality. A unidirectional antenna would be more suitable for a warehouse environment where users are located on one side of the building1.

  References: https://www.cisco.com/c/en/us/support/docs/wireless-mobility/wireless-lan-wlan/82068-omni-vs-direct.html

• Question 748:

  A network technician is reviewing an upcoming project's requirements to implement laaS. Which of the following should the technician consider?

  A. Software installation processes

  B. Type of database to be installed

  C. Operating system maintenance

  D. Server hardware requirements

  Correct Answer: D

  IaaS stands for Infrastructure as a Service, which is a cloud computing model that provides virtualized computing resources such as servers, storage, and networking over the Internet. When implementing IaaS, the network technician should consider the server hardware requirements, such as CPU, RAM, disk space, and network bandwidth, that are needed to run the applications and services on the cloud. The other options are not relevant to IaaS, as they are either handled by the cloud provider or by the end-user.

  References: https://www.comptia.org/blog/what-is-iaas

• Question 749:

  A corporation has a critical system that would cause unrecoverable damage to the brand if it was taken offline. Which of the following disaster recovery solutions should the corporation implement?

  A. Full backups

  B. Load balancing

  C. Hot site

  D. Snapshots

  Correct Answer: C

  A hot site is the disaster recovery solution that the corporation should implement for its critical system that would cause unrecoverable damage to the brand if it was taken offline. A hot site is a fully operational backup site that can take over

  the primary site's functions in case of a disaster or disruption. A hot site has all the necessary hardware, software, data, network connections, and personnel to resume normal operations with minimal downtime. A hot site is suitable for

  systems that require high availability and cannot afford any data loss or interruption. References:

  https://www.enterprisestorageforum.com/management/disaster-recovery-site/

• Question 750:

  A technician is troubleshooting a previously encountered issue. Which of the following should the technician reference to find what solution was implemented to resolve the issue?

  A. Standard operating procedures

  B. Configuration baseline documents

  C. Work instructions

  D. Change management documentation

  Correct Answer: D

  Change management documentation is a record of the changes that have been made to a system or process, including the reason, date, time, and impact of each change. A technician can reference this documentation to find what solution was implemented to resolve a previously encountered issue, as well as any potential side effects or dependencies of the change. References: https://www.comptia.org/blog/what-is-change-management