Question 1

Which is true about wireless AP and device optimization?
A) using autonomous APs reduces TCO
B) always use picocell APs for large coverage areas
C) conservative roaming setting should be used for VoWiFi devices
D) devices should be set to maintain their wireless connection even when connected to a wired network

Accepted Answer

Conservative roaming settings help ensure that VoWiFi devices maintain a stable connection by avoiding frequent handoffs, which can disrupt voice communication.

Question 2

Describe intersymbol interference.

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Question 3

What are three ways to resolve a hidden node problem?

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Question 4

How can modifying power levels mitigate all-band interference problems?

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Question 5

Describe the issue of duplicate SSIDs and why this may cause a wireless device to intermittently disconnect from the AP.

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Question 6

Describe the noise floor.

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Question 7

When scanning,the wireless network adapter sends a series of ____________________ frames and the APs within range respond with a Beacon frame that contains the capabilities of the wireless AP,such as the supported speeds,SSID,and security options.

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Question 8

Which of the following are proposed solutions to the interference caused by competing technologies that use FHSS to hop across the spectrum? (Choose all that apply.)
A) change the RF spectrum used
B) add switching software
C) change the Network layer
D) modify power levels

Accepted Answer

Changing the RF spectrum, adding switching software, and modifying power levels are all proposed solutions to mitigate interference in technologies using Frequency-Hopping Spread Spectrum (FHSS). Changing the RF spectrum can help avoid crowded frequencies, adding switching software can improve how devices select frequencies to minimize collisions, and adjusting power levels can reduce the interference range between devices. Changing the Network layer does not directly address the interference issues inherent to the physical and link layers where FHSS operates.

Question 9

What are four factors that influence system throughput?

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Question 10

When a wireless device running Windows attempts to connect to the WLAN it goes through a five-step process.List the steps in this process.

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Question 11

Which of the following are categories of external noise interference on a WLAN? (Choose all that apply.)
A) multiband interference
B) narrowband interference
C) weather interference
D) longband interference

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Question 12

How would you solve a near/far transmission problem?

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Question 13

One of the main sources of WLAN problems is ____________ interference.

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Question 14

The _________ floor indicates the weakest signal that can be received.

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Question 15

Explain why the statement "The network seems to be working OK so there must not be any RF interference." might be considered a wireless 'myth'.

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Question 16

Which of the following are factors to consider when troubleshooting slow throughput? (Choose all that apply.)
A) distance from the AP
B) number of users
C) type of interference
D) network layer protocol

Accepted Answer

Distance from the access point, number of users, and type of interference are all factors that can affect the speed of throughput on a wireless network. The network layer protocol may also play a role in some cases, but it is not as commonly a factor as the other three.

Question 17

If a wireless device is not connecting with the AP,what are the first two things you should check? (Choose two.)
A) wireless device and AP are configured for the same subnet
B) matching SSID
C) excessive collisions
D) security settings

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Question 18

If the wireless device is configured for DHCP yet no DHCP server is active,then Windows assigns a(n)____________________ IP Addressing address that begins with the IP range 169.254.x.x.

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Question 19

Competing technologies that use FHSS can create ______________ interference.

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Question 20

What is cochannel interference?

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Quiz 12: Wireless Network Troubleshooting and Optimization

Which is true about wireless AP and device optimization?