Network + Udemy Practice Exam
(This is a simulated Performance-Based Question. On the real certification exam, you will be asked to
drag-and-drop the correct antennas onto the APs.)
Your company has just purchased a new building down the street for its executive suites. You have been
asked to select the proper antennas to establish a wireless connection between the two buildings.
Which of the following is the BEST antenna configuration to use for AP4 and AP5 to control the signal
propagation and minimize the chances of the signal being intercepted? - correct answersPick a 15 dB
Right Parabolic for AP4 and a 15 dB Left Parabolic for an AP5
Parabolic antennas work well for outside wireless applications where you want directional control of the
signal (such as when connecting two buildings) and over a longer distance (such as "down the street" as
in this scenario).
The company's corporate headquarters provided your branch office a portion of their Class C subnet to
use at a new office location. In the next several questions, you will be asked to allocate the minimum
number of addresses using CIDR notation to accommodate each department's needs.
What is the correct CIDR notation for the Sales department's subnet, which requires 55 devices? -
correct answers/26
Since the Sales department needs 55 devices plus a network ID and broadcast IP, it will require 57 IP
addresses. The smallest subnet that can fit 57 IPs is a /26 (64 IPs).
What type of cable would you use to connect a computer to a switch? - correct answersStraight Through
A home user performs a speed test using SpeedTest.net and receives the following report:
Which of the following is a correct interpretation of these results? - correct answersThe user's pc is
receiving data to its server at 99.79 Mbps
, and uploads data from its server at 116.61
The user's PC is receiving data at 99.79 Mbps and sending data to the server at 116.61 Mbps. When you
run a speed test, your computer downloads a sample file from the test server, then uploads it back to
the server to determine your connection speed.
You are a network administrator troubleshooting an issue with a newly-installed web server. The web
server is available to internal network users, but users outside the internal network (Internet users)
cannot reach the server. You run an IPCONFIG and receive the configuration below:
Which of the following is the MOST LIKELY reason why the server is unreachable from the Internet?
The configured DNS server is not reachable by the web server.
(Incorrect)
The gateway IP has been misconfigured.
The Layer 3 switch port connecting the web server is blocking port 80.
NAT has not been configured on the border firewall.
(Correct) - correct answersNAT has not been configured for the border firewall
The most likely cause is that the NAT has not been properly configured on the border firewall. This
would cause the internal network users to access the web servers still (since internal traffic doesn't have
to transit the firewall) but would still prevent Internet users from accessing the web server.
It is 3 am on a Saturday, and you just received a call from a system administrator that reports multiple
network outages across the office network. It is snowing heavily outside, and the roads are inaccessible
for you to get to the building to check the configuration of the network devices. What technology should
you use to connect to your home office network to troubleshoot the network outages? - correct
answersSSH - You should use a VPN or an SSH connection to connect to your office network from home
remotely.
Your company has two office buildings which are connected via a copper network cable that is buried
underground. There is some construction being performed near the buildings. Now, the second building
discovers they have suffered a network outage that doesn't appear to be temporary. What is the MOST
likely cause of the outage? - correct answersAn open circuit has been created
(This is a simulated Performance-Based Question. On the real certification exam, you will be asked to
drag-and-drop the correct antennas onto the APs.)
Your company has just purchased a new building down the street for its executive suites. You have been
asked to select the proper antennas to establish a wireless connection between the two buildings.
Which of the following is the BEST antenna configuration to use for AP4 and AP5 to control the signal
propagation and minimize the chances of the signal being intercepted? - correct answersPick a 15 dB
Right Parabolic for AP4 and a 15 dB Left Parabolic for an AP5
Parabolic antennas work well for outside wireless applications where you want directional control of the
signal (such as when connecting two buildings) and over a longer distance (such as "down the street" as
in this scenario).
The company's corporate headquarters provided your branch office a portion of their Class C subnet to
use at a new office location. In the next several questions, you will be asked to allocate the minimum
number of addresses using CIDR notation to accommodate each department's needs.
What is the correct CIDR notation for the Sales department's subnet, which requires 55 devices? -
correct answers/26
Since the Sales department needs 55 devices plus a network ID and broadcast IP, it will require 57 IP
addresses. The smallest subnet that can fit 57 IPs is a /26 (64 IPs).
What type of cable would you use to connect a computer to a switch? - correct answersStraight Through
A home user performs a speed test using SpeedTest.net and receives the following report:
Which of the following is a correct interpretation of these results? - correct answersThe user's pc is
receiving data to its server at 99.79 Mbps
, and uploads data from its server at 116.61
The user's PC is receiving data at 99.79 Mbps and sending data to the server at 116.61 Mbps. When you
run a speed test, your computer downloads a sample file from the test server, then uploads it back to
the server to determine your connection speed.
You are a network administrator troubleshooting an issue with a newly-installed web server. The web
server is available to internal network users, but users outside the internal network (Internet users)
cannot reach the server. You run an IPCONFIG and receive the configuration below:
Which of the following is the MOST LIKELY reason why the server is unreachable from the Internet?
The configured DNS server is not reachable by the web server.
(Incorrect)
The gateway IP has been misconfigured.
The Layer 3 switch port connecting the web server is blocking port 80.
NAT has not been configured on the border firewall.
(Correct) - correct answersNAT has not been configured for the border firewall
The most likely cause is that the NAT has not been properly configured on the border firewall. This
would cause the internal network users to access the web servers still (since internal traffic doesn't have
to transit the firewall) but would still prevent Internet users from accessing the web server.
It is 3 am on a Saturday, and you just received a call from a system administrator that reports multiple
network outages across the office network. It is snowing heavily outside, and the roads are inaccessible
for you to get to the building to check the configuration of the network devices. What technology should
you use to connect to your home office network to troubleshoot the network outages? - correct
answersSSH - You should use a VPN or an SSH connection to connect to your office network from home
remotely.
Your company has two office buildings which are connected via a copper network cable that is buried
underground. There is some construction being performed near the buildings. Now, the second building
discovers they have suffered a network outage that doesn't appear to be temporary. What is the MOST
likely cause of the outage? - correct answersAn open circuit has been created
