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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?
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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?
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Question 386 - N10-008 discussion

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

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asked 02/10/2024
Peter Stones
39 questions
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