Question 1

A network technician is troubleshooting a PC that cannot access the Internet. However, the PC responds to ICMP echo requests from the same subset. Which of the following is the MOST likely reason the PC cannot communicate externally?

Accepted Answer

The PC can respond to ICMP echo requests, indicating it has network connectivity within its subnet. However, if the default gateway is incorrect, it cannot route traffic to external networks, preventing Internet access.

Question 2

A new employee is learning how to use multiple company applications. Upon logging in to one application, the employee notices the other applications do not require authentication. Which of the following explains the reason why this is happening?

Accepted Answer

Single sign-on (SSO) allows a user to log in once and gain access to multiple applications without needing to authenticate again for each application.

Question 3

A network technician is installing a wireless network for a small medical office. The doctors need to download high resolution x-rays quickly with minimal latency. Which of the following technologies should be utilized?

Accepted Answer

MIMO (Multiple Input Multiple Output) is a technology used in wireless communications to increase data throughput and reduce latency, making it suitable for high-resolution data transfers like x-rays.

Question 4

Which of the following technologies would allow a technician to install and run multiple guest operating systems on host hardware?

Accepted Answer

A hypervisor is a technology that allows multiple guest operating systems to run on a single host machine by managing and allocating resources to each virtual machine.

Question 5

A network technician is assisting a user who cannot connect to a wireless connection. The user is connecting to the correct SSID and has the correct pre-shared key. The technician verifies the WAP is working, and other clients are connected to it from the same location. Which of the following should the technician investigate?

Accepted Answer

The answer of A network technician is assisting a user...

Question 6

Which of the following BEST explains why a firewall would be subject to international export controls?

Accepted Answer

Firewalls often use encryption technology, which is subject to international export controls due to its potential use in securing communications and data, making it sensitive for national security reasons.

Question 7

Which of the following VPN technologies should a network technician utilize to tunnel IPv6 traffic and multicast over an IPv4 WAN link?

Accepted Answer

GRE (Generic Routing Encapsulation) is a tunneling protocol that can encapsulate a wide variety of network layer protocols, including IPv6 and multicast traffic, over an IPv4 network.

Question 8

A customer wants a technician to implement a solution that will allow its critical on-site servers to continue to function in the event of an extended power outage. Which of the following should the technician recommend?

Accepted Answer

A power generator is designed to provide electricity during an extended power outage, ensuring that critical on-site servers remain operational.

Question 9

Which of the following BEST explains why a network engineer would use a wireless mesh network when connecting sensors to a sensor gateway?

Accepted Answer

A wireless mesh network creates multiple paths to a destination, enhancing reliability and coverage, which is ideal for connecting sensors to a gateway.

Question 10

A network administrator needs to bring a new building online that houses multiple departments. The departments vary in size, with the smallest having 25 hosts and the largest having 140 hosts. When designing the addressing scheme for the new building, which of the following should the network administrator use lo limit the number of wasted IP addresses?

Accepted Answer

Variable Length Subnet Masking (VLSM) allows the network administrator to allocate IP addresses more efficiently by using different subnet masks for different subnets, minimizing wasted IP addresses.

Question 11

Two buildings are connected with 802.11a wireless bridges using omnidirectional antennas. However, the connection between the two bridges often drops. Which of the following would be the BEST solution?

Accepted Answer

Using unidirectional antennas will focus the signal between the two buildings, reducing interference and improving connection stability.

Question 12

A network technician is installing a new fiber-optic connection between two buildings on a campus network. When the network technician connects the fiber at the second location, the interface link light does not light up. Which of the following should the technician do NEXT?

Accepted Answer

Reversing the fiber pair is a common troubleshooting step when the link light does not illuminate, as it may indicate that the transmit and receive fibers are crossed.

Question 13

A network engineer is surveying the existing wireless infrastructure to propose additional changes to increase throughput. The SSID is already on an uncongested 5GHz frequency. Which of the following should the engineer configure?

Accepted Answer

Channel bonding can increase throughput by combining two channels into one, effectively doubling the bandwidth available for data transmission.

Question 14

A user from a remote office is reporting slow file transfers. Which of the following tools will an engineer MOST likely use to get detailed measurement data?

Accepted Answer

iPerf is a tool specifically designed to measure the bandwidth and performance of network links, providing detailed measurement data on file transfer speeds.

Question 15

A technician is dispatched to replace an access point that has failed. The device is preconfigured with the correct SSID and passphrase. When the user tries to connect to the SSID, the connection fails. Which of the following is the MOST likely cause of the issue?

Accepted Answer

The most likely cause of the issue is a security type mismatch. Even if the SSID and passphrase are correct, if the security type (e.g., WPA2, WPA3) configured on the access point does not match what the client device expects, the connection will fail.

Question 16

A network engineer needs to connect two network switches with a gigabit link. The proposed route to run the 164ft (50m) cable is directly underneath a large electrical generator. Which of the following cable types would BEST fit the needs of the network engineer?

Accepted Answer

STP (Shielded Twisted Pair) cable is best suited for environments with potential electromagnetic interference, such as being near a large electrical generator.

Question 17

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

Accepted Answer

Channel bonding combines multiple channels to increase bandwidth and improve performance.

Question 18

A new application is being deployed. The application team has asked the network team to monitor network performance and create alerts if fluctuations in the round-trip time for that traffic occur. Which of the following should the network team monitor to meet this requirement?

Accepted Answer

Jitter refers to the variation in packet arrival times, which can cause fluctuations in round-trip time. Monitoring jitter will help identify these fluctuations and create alerts accordingly.

Question 19

A network administrator plans to install network connectivity at a new remote office location. The administrator is concerned about how to troubleshoot network connectivity issues and reconfigure the remote router. The technician should use __________.

Accepted Answer

Using a modem with POTS (Plain Old Telephone Service) allows the administrator to access the remote router even if the primary network connection fails, providing a reliable method for troubleshooting and reconfiguration.

Question 20

A network technician is investigating an issue with handheld devices in a warehouse. Devices have not been connecting to the nearest APs, but they have been connecting to an AP on the far side of the warehouse. Which of the following is the MOST likely cause of this issue?

Accepted Answer

An incorrect channel assignment on the nearest APs can cause devices to connect to a farther AP with a stronger signal.

Exam 10: CompTIA Network+