Wireless Networking

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Questions Bank

Introduction to Networking
Network Infrastructure and Documentation
Addressing on Networks
Network Protocols and Routing
Network Cabling
Wireless Networking
Virtualization and Cloud Computing
Subnets and VLANs
Network Risk Management
Security in Network Design
Network Performance and Recovery
Wide Area Networks

All Questions

Question 1

Free

True/False

All wireless signals are carried through the air by electromagnetic waves.

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True

False

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Question 2

Free

True/False

NFC tags are very expensive and cannot be purchased blank, requiring them to be pre-loaded.

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True

False

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Question 3

Free

True/False

The Wi-Fi Protected Setup PIN can be easily cracked through a brute force attack.

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True

False

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Question 4

Free

True/False

Infrared technology utilizes an LED that emits light with shorter wavelengths than red light.

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True

False

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Question 5

Free

True/False

The most secure Wi-Fi communication is made possible by combining a RADIUS server with WPA or WPA2, known as WPA-Enterprise or WPA2-Enterprise, respectively.

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True

False

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Question 6

True/False

Due to many vulnerabilities and a short key length, the WPA security standard was replaced with WEP.

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True

False

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Question 7

True/False

Z-Wave transmissions have a range of up to 50m per hop, and can tolerate up to 8 hops through repeaters.

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True

False

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Question 8

True/False

The LLC sublayer is primarily concerned with managing MAC addresses in message frames.

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True

False

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Question 9

Multiple Choice

Diffraction has what affect on a wireless signal's propagation?

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The signal is redirected into multiple directions.

The signal is split into secondary waves that continue in the direction in which they split.

The signal is returned back towards the source of the original signal.

The signal is completely absorbed by the diffracting material.

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Question 10

Multiple Choice

How does refraction affect the propagation of a wireless transmission?

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It distorts the signal as it travels into and through a different transmission medium.

It splits the signal into secondary waves that continue in the direction in which they split.

It causes the signal to be returned back towards the source of the origin.

It causes the signal to be absorbed by the refracting material.

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Question 11

Multiple Choice

In Linux, what command can be used for viewing and setting wireless interface parameters?

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ifconfig

iwconfig

wlanconf

wifid

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Question 12

Multiple Choice

At what layer of the OSI model do the 802.11 standards vary?

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Physical layer

Network layer

Data link layer

Transport layer

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Question 13

Multiple Choice

What special signal is issued periodically from an AP and contains the network transmission rate and service set identifier (SSID), as well as other information needed for a computer to associate with the AP?

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broadcast frame

beacon frame

announcement packet

alert message

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Question 14

Multiple Choice

In IEEE terminology, a group of stations that share an access point are said to be part of which of the following?

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extended service set

basic service set

modified service set

generic service set

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Question 15

Multiple Choice

What 802.11 frame type is involved in association and reassociation, including probe and beacon frames?

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management frames

control frames

data frames

extended frames

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Question 16

Multiple Choice

Which 802.11 frame type is related to medium access and data delivery, and includes ACK and RTS/CTS frames?

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management frames

control frames

data frames

extended frames

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Question 17

Multiple Choice

How does the 802.11 data frame indicate how a large packet should be fragmented?

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It uses the preamble header to estimate the ideal packet size.

The frame check sequence dictates the calculated packet size.

The sequence control field indicates how packets will be subdivided.

The duration field determines how long the station can transmit a packet, which then determines how it is divided.

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Question 18

Multiple Choice

The use of multiple antennas on an access point to issue a signal to one or more receivers is enabled by what 802.11 innovation?

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multiple input-multiple output (MIMO)

channel bonding

frame aggregation

spread spectrum frequency hopping

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Question 19

Multiple Choice

In an 802.11 data frame, what is the size of the frame check sequence field?

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2 bytes

4 bytes

6 bytes

8 bytes

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Question 20

Multiple Choice

How many data streams are used in 802.11ac Wave 2 devices?

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2 data streams

3 data streams

4 data streams

8 data streams

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