CompTIA Network+ N10-009 B.2.7 Practice
Test: Questions and Answers
Question 1
During a routine network maintenance check, you notice that the connection to a
remote branch office is slower than usual. To investigate further, you use the ping
command with the -t switch to continuously monitor the connection to the branch
office's network gateway at IP address 10.10.10.1.
After a few minutes, you observe that the RTT values fluctuate between 50 ms and
200 ms.
What might be causing these fluctuations?
Correct Answer
Network congestion or varying network conditions between the main office and the
branch office.
Question 2
A network engineer is tasked with optimizing the network performance of a Linux-
based server. The engineer suspects that there are unnecessary services running that
could be consuming network resources.
The network engineer wants to identify all services that are currently listening for
incoming connections so they can review and potentially disable any that are not
required.
Which netstat command should the network engineer use to identify these services?
Correct Answer
netstat -l
Page 1 of 31
,Question 3
A new Internet Service Provider (ISP) is setting up its network infrastructure. The ISP's
primary goal is to ensure that data packets are routed using the most efficient paths
to minimize latency and maximize throughput.
The network team is evaluating various routing protocols to deploy within their
autonomous system that will best meet these requirements.
Given the ISP's focus on efficiency and performance, which routing protocol should
they consider implementing?
Correct Answer
OSPF (Open Shortest Path First)
Question 4
You are monitoring network traffic and notice that ARP requests for a specific IP
address are receiving responses from two different MAC addresses.
What is the MOST likely cause of this issue, and how should you proceed to
troubleshoot it?
Correct Answer
The IP address is configured on a virtual machine and its host; reassign the IP
address to only one device.
Question 5
A system administrator is setting up a new Linux server for their company. The
administrator needs to ensure that all user passwords are stored securely and that the
authentication process is robust.
The system administrator decides to configure the system so that when users log in,
their passwords are checked against a hash stored in a specific file.
Which file should the system administrator configure to store the hashed passwords
for user authentication?
Correct Answer
/etc/shadow
Page 2 of 31
,Question 6
You are the network administrator for a medium-sized company. Recently, you've
noticed that the performance of the network firewall has significantly decreased.
Upon investigation, you discover that the current configuration of the firewall has
deviated from the baseline configuration that was documented six months ago. You
suspect this configuration drift might be the cause of the performance issues.
What should be your next step to address this issue?
Correct Answer
Perform testing to compare the current configuration with the baseline to identify
which configuration performs better.
Question 7
During a security audit, you discover that an internal application used by your
company for file transfers is still using TLSv1.0.
What should be your immediate recommendation to enhance the security of the
application?
Correct Answer
Upgrade to a more recent version of TLS.
Question 8
You are tasked with installing a new network in an office that includes running
Ethernet cables close to several electrical power lines, fluorescent lights, and a large
server room that contains multiple radio transmitters.
After installation, users report intermittent connectivity issues and slow network
speeds.
What is the most likely cause of these network issues?
Correct Answer
The proximity to electrical power lines and fluorescent lights is causing
Electromagnetic Interference (EMI).
Page 3 of 31
, Question 9
You are configuring a network that requires globally unique IPv6 addresses for each
device to ensure they are routable over the Internet. The first three bits of an address
you plan to use are 001.
Is this address suitable for your needs?
Correct Answer
Yes, because the first 3 bits indicate a global scope.
Question 10
During a wireless network upgrade, you notice that the antenna cables connecting to
some of the APs are quite long, potentially leading to signal loss.
Which type of cable would minimize antenna cable attenuation?
Correct Answer
400 cable
Question 11
An organization allows its employees to work remotely. One of the employees uses
various consumer-grade IoT devices at home, including smart speakers, cameras, and
a thermostat. The employee frequently connects to the corporate VPN to access work
resources.
Considering the potential security risks, what is the BEST practice for mitigating the
risk of a security breach through the employee's home network?
Correct Answer
Provide security awareness training and regular security audits of the devices used
by remote employees.
Page 4 of 31
Test: Questions and Answers
Question 1
During a routine network maintenance check, you notice that the connection to a
remote branch office is slower than usual. To investigate further, you use the ping
command with the -t switch to continuously monitor the connection to the branch
office's network gateway at IP address 10.10.10.1.
After a few minutes, you observe that the RTT values fluctuate between 50 ms and
200 ms.
What might be causing these fluctuations?
Correct Answer
Network congestion or varying network conditions between the main office and the
branch office.
Question 2
A network engineer is tasked with optimizing the network performance of a Linux-
based server. The engineer suspects that there are unnecessary services running that
could be consuming network resources.
The network engineer wants to identify all services that are currently listening for
incoming connections so they can review and potentially disable any that are not
required.
Which netstat command should the network engineer use to identify these services?
Correct Answer
netstat -l
Page 1 of 31
,Question 3
A new Internet Service Provider (ISP) is setting up its network infrastructure. The ISP's
primary goal is to ensure that data packets are routed using the most efficient paths
to minimize latency and maximize throughput.
The network team is evaluating various routing protocols to deploy within their
autonomous system that will best meet these requirements.
Given the ISP's focus on efficiency and performance, which routing protocol should
they consider implementing?
Correct Answer
OSPF (Open Shortest Path First)
Question 4
You are monitoring network traffic and notice that ARP requests for a specific IP
address are receiving responses from two different MAC addresses.
What is the MOST likely cause of this issue, and how should you proceed to
troubleshoot it?
Correct Answer
The IP address is configured on a virtual machine and its host; reassign the IP
address to only one device.
Question 5
A system administrator is setting up a new Linux server for their company. The
administrator needs to ensure that all user passwords are stored securely and that the
authentication process is robust.
The system administrator decides to configure the system so that when users log in,
their passwords are checked against a hash stored in a specific file.
Which file should the system administrator configure to store the hashed passwords
for user authentication?
Correct Answer
/etc/shadow
Page 2 of 31
,Question 6
You are the network administrator for a medium-sized company. Recently, you've
noticed that the performance of the network firewall has significantly decreased.
Upon investigation, you discover that the current configuration of the firewall has
deviated from the baseline configuration that was documented six months ago. You
suspect this configuration drift might be the cause of the performance issues.
What should be your next step to address this issue?
Correct Answer
Perform testing to compare the current configuration with the baseline to identify
which configuration performs better.
Question 7
During a security audit, you discover that an internal application used by your
company for file transfers is still using TLSv1.0.
What should be your immediate recommendation to enhance the security of the
application?
Correct Answer
Upgrade to a more recent version of TLS.
Question 8
You are tasked with installing a new network in an office that includes running
Ethernet cables close to several electrical power lines, fluorescent lights, and a large
server room that contains multiple radio transmitters.
After installation, users report intermittent connectivity issues and slow network
speeds.
What is the most likely cause of these network issues?
Correct Answer
The proximity to electrical power lines and fluorescent lights is causing
Electromagnetic Interference (EMI).
Page 3 of 31
, Question 9
You are configuring a network that requires globally unique IPv6 addresses for each
device to ensure they are routable over the Internet. The first three bits of an address
you plan to use are 001.
Is this address suitable for your needs?
Correct Answer
Yes, because the first 3 bits indicate a global scope.
Question 10
During a wireless network upgrade, you notice that the antenna cables connecting to
some of the APs are quite long, potentially leading to signal loss.
Which type of cable would minimize antenna cable attenuation?
Correct Answer
400 cable
Question 11
An organization allows its employees to work remotely. One of the employees uses
various consumer-grade IoT devices at home, including smart speakers, cameras, and
a thermostat. The employee frequently connects to the corporate VPN to access work
resources.
Considering the potential security risks, what is the BEST practice for mitigating the
risk of a security breach through the employee's home network?
Correct Answer
Provide security awareness training and regular security audits of the devices used
by remote employees.
Page 4 of 31
