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CompTIA N10-008 Practice Test - Questions Answers, Page 39

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The cybersecurity department needs to monitor historical IP network traffic on the WAN interface of the outside router without installing network sensors. Which of the following would be best to allow the department to complete this task?
Staff members notify a network technician that the wireless network is not working as expected and connectivity to wireless devices is intermittent. Some devices connect but then disconnect. The technician reviews the logs on the WAP controller and identifies thousands of connection attempts from unrecognized devices within a short amount of time. Which of the following is the most likely reason for the wireless network connectivity issue?
A firewall administrator observes log entries of traffic being allowed to a web server on port 80 and port 443. The policy for this server is to only allow traffic on port 443. The firewall administrator needs to investigate how this change occurred to prevent a reoccurrence. Which of the following should the firewall administrator do next?
Which of the following is the most accurate NTP time source that is capable of being accessed across a network connection?
Which of the following BEST describes a network appliance that warns of unapproved devices that are accessing the network?
A user is unable to perform a reverse DNS lookup of an IP address to a hostname. Which of the following DNS record types is missing?
A global company has acquired a local company. The companies are geographically separate. The IP address ranges for the two companies are as follows: * Global company: 10.0.0.0/16 * Local company: 10.0.0.0/24 Which of the following can the network engineer do to quickly connect the two companies?
Which of the following records is the main type in a reverse DNS lookup zone?
A network administrator is designing a new datacenter in a different region that will need to communicate to the old datacenter with a secure connection. Which of the following access methods would provide the BEST security for this new datacenter?
A network is experiencing a number of CRC errors during normal network communication. At which of the following layers of the OSI model will the administrator MOST likely start to troubleshoot?

Question 381

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A technician is deploying a new SSID for an industrial control system. The control devices require the network to use encryption that employs TKIP and a symmetrical password to connect. Which of the following should the technician configure to ensure compatibility with the control devices?

A.
WPA2-Enterprise
A.
WPA2-Enterprise
Answers
B.
WPA-Enterprise
B.
WPA-Enterprise
Answers
C.
WPA-PSK
C.
WPA-PSK
Answers
D.
WPA2-PSK
D.
WPA2-PSK
Answers
Suggested answer: C

Explanation:

"WPA uses Temporal Key Integrity Protocol (TKIP) for enhanced encryption. TKIP uses RC4 for the encryption algorithm, and the CompTIA Network+ exam may reference TKIP-RC4 in a discussion of wireless."

" WPA2 uses Counter Mode with Cipher Block Chaining Message Authentication Code Protocol (CCMP) for integrity checking and Advanced Encryption Standard (AES) for encryption. On the Network+ exam, you might find this referenced as simply CCMP-AES"

Question 382

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Which of the following ports should be used to securely receive mail that is synchronized across multiple devices?

A.
25
A.
25
Answers
B.
110
B.
110
Answers
C.
443
C.
443
Answers
D.
993
D.
993
Answers
Suggested answer: D

Question 383

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A technician is configuring a static IP address on a new device in a newly created subnet. The work order specifies the following requirements:

• The IP address should use the highest address available in the subnet.

• The default gateway needs to be set to 172.28.85.94.

• The subnet mask needs to be 255.255.255.224.

Which of the following addresses should the engineer apply to the device?

A.
172.28.85.93
A.
172.28.85.93
Answers
B.
172.28.85.95
B.
172.28.85.95
Answers
C.
172.28.85.254
C.
172.28.85.254
Answers
D.
172.28.85.255
D.
172.28.85.255
Answers
Suggested answer: A

Explanation:

https://www.tunnelsup.com/subnet-calculator/

IP Address: 172.28.85.95/27

Netmask: 255.255.255.224

Network Address: 172.28.85.64

Usable Host Range: 172.28.85.65 - 172.28.85.94

Broadcast Address: 172.28.85.95

Question 384

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Which of the following is most likely to have the HIGHEST latency while being the most accessible?

A.
Satellite
A.
Satellite
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B.
DSL
B.
DSL
Answers
C.
Cable
C.
Cable
Answers
D.
4G
D.
4G
Answers
Suggested answer: A

Question 385

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Which of the following commands can be used to display the IP address, subnet address, gateway address, and DNS address on a Windows computer?

A.
netstat -a
A.
netstat -a
Answers
B.
ifconfig
B.
ifconfig
Answers
C.
ip addr
C.
ip addr
Answers
D.
ipconfig /all
D.
ipconfig /all
Answers
Suggested answer: D

Explanation:

The ipconfig command is a utility that allows you to view and modify the network configuration of a Windows computer. By running the command "ipconfig /all", you can view detailed information about the network configuration of your computer, including the IP address, subnet mask, default gateway, and DNS server addresses.

Option A (netstat -a) is a command that displays active network connections and their status, but it does not display IP address or other network configuration information. Option B (ifconfig) is a command used on Linux and Unix systems to view and modify network configuration, but it is not available on Windows. Option C (ip addr) is a command used on Linux and Unix systems to view and modify network configuration, but it is not available on Windows.

Question 386

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An office area contains two PoE-enabled WAPs. After the area was remodeled, new cable uplinks were installed in the ceiling above the fluorescent lights. However, after the WAPs were reconnected, users reported slowness and application errors. An intern reviewed the network and discovered a lot of CRC errors. A network engineer reviewed the intern's work and realized UTP cabling was used. Which of the following is the MOST likely cause of the CRC errors?

A.
Insufficient power at the antennas
A.
Insufficient power at the antennas
Answers
B.
PoE and UTP incompatibility
B.
PoE and UTP incompatibility
Answers
C.
Electromagnetic interference
C.
Electromagnetic interference
Answers
D.
Wrong cable pinout
D.
Wrong cable pinout
Answers
Suggested answer: C

Explanation:

"EMI is a problem when cables are installed near electrical devices, such as air conditioners or fluorescent light fixtures. If a network medium is placed close enough to such a device, the signal within the cable might become corrupt. Network media vary in their resistance to the effects of EMI. Standard unshielded twisted-pair (UTP) cable is susceptible to EMI, whereas fiber cable, with its light transmissions, is resistant to EMI. When deciding on a particular medium, consider where it will run and the impact EMI can have on the installation."

Question 387

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Several users with older devices are reporting intermittent connectivity while in an outdoor patio are a. After some research, the network administrator determines that an outdoor WAP might help with the issue. However, the company does not want the signal to bleed into the building and cause interference. Which of the following should the network administrator perform to BEST resolve the issue?

A.
Disable the SSID broadcast on the WAP in the patio area.
A.
Disable the SSID broadcast on the WAP in the patio area.
Answers
B.
Install a WAP and enable 5GHz only within the patio area.
B.
Install a WAP and enable 5GHz only within the patio area.
Answers
C.
Install a directional WAP in the direction of the patio.
C.
Install a directional WAP in the direction of the patio.
Answers
D.
Install a repeater on the back wall of the patio area.
D.
Install a repeater on the back wall of the patio area.
Answers
Suggested answer: C

Question 388

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A network engineer developed a plan of action to resolve an ongoing issue. Which of the following steps should the engineer take NEXT?

A.
Verify full system functionality and implement preventative measures.
A.
Verify full system functionality and implement preventative measures.
Answers
B.
Implement the solution to resolve the problem.
B.
Implement the solution to resolve the problem.
Answers
C.
Document findings, actions, outcomes, and lessons learned.
C.
Document findings, actions, outcomes, and lessons learned.
Answers
D.
Establish a theory of probable cause.
D.
Establish a theory of probable cause.
Answers
Suggested answer: B

Explanation:

Network troubleshooting is a repeatable process, which means that you can break it down into clear steps that anyone can follow.

Identify the Problem. ...

Develop a Theory. ...

Test the Theory. ...

Plan of Action. ...

Implement the Solution. ...

Verify System Functionality. ...

Document the Issue.

Theory of probable cause is before Plan of action.

https://www.comptia.org/content/guides/a-guide-to-network-troubleshooting

Question 389

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Which of the following can have multiple VLAN interfaces?

A.
Hub
A.
Hub
Answers
B.
Layer 3 switch
B.
Layer 3 switch
Answers
C.
Bridge
C.
Bridge
Answers
D.
Load balancer
D.
Load balancer
Answers
Suggested answer: B

Question 390

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Which of the following connector types would be used to connect to the demarcation point and provide network access to a cable modem?

A.
F-type
A.
F-type
Answers
B.
RJ45
B.
RJ45
Answers
C.
LC
C.
LC
Answers
D.
RJ11
D.
RJ11
Answers
Suggested answer: A

Explanation:

An F-type connector is a type of coaxial connector that is commonly used to connect a cable modem to the demarcation point, which is the point at which the cable provider's network ends and the customer's network begins. The F-type connector is a threaded connector that is typically used for television, cable modem, and satellite antenna connections.

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