Wireless Networking

Question 1

A way to network without wires

Answer 1

Wireless Networking

Question 2

The most common specifications for how wireless networking devices should communicated are defined by the…

Answer 2

IEEE 802.11 standards

Question 3

Wireless networking devices communicate to each other through

Answer 3

Radiowaves

Question 4

A certain section of the radio spectrum that’s been agreed upon to be used for certain communications

Answer 4

Frequency Band

Question 5

In North America, FM radio transmissions operate between

Answer 5

88 and 108 MHz

Question 6

WiFi networks operate on what frequency bands?

Answer 6

2.4GHz and 5GHz

Question 7

Some of the most common specifications for 802.11 specifications?

Answer 7

802. 11b
803. 11a
804. 11g
805. 11n
806. 11ac

Question 8

802.11 defines how we operate at which layers?

Answer 8

physical and data link layers

Question 9

_ is the first field of the 802.11 frame format. This field is 16 bits long and contains a number of subfields that are used to describe how the frame itself should be processed.

Answer 9

Frame control

Question 10

_ is the second field of the 802.11 frame format. It specifies how long the total frame is, so the receiver knows how long it should expect to listen to this transmission.

Answer 10

Duration field

Question 11

A device that bridges the wireless and wired portion of a network

Answer 11

Wireless access point

Question 12

How many address fields are there in a 802.11 frame?

Answer 12

4

Question 13

Address 1 field in the 802.11 frame defines the _

Answer 13

Source address - represents the MAC address of the sending device

Question 14

Address 2 field in the 802.11 frame defines the _

Answer 14

Intended destination

Question 15

Address 3 field in the 802.11 frame defines the _

Answer 15

Receiving address

Question 16

Address 4 field in the 802.11 frame defines the _

Answer 16

Transmitter address

Question 17

MAC address of the access point that should receive the frame

Answer 17

Receiving address (Address 3)

Question 18

MAC address of the device that transmitted the frame

Answer 18

Transmitter address (Address 4)

Question 19

How many bits is the Frame control field?

Answer 19

16 bits

Question 20

How many bits is each Address field?

Answer 20

6 bits

Question 21

How many bits is the Duration field?

Answer 21

2 bits

Question 22

A 16 bit field in the 802.11 frame that contains a sequence number used to keep track of the ordering of frames

Answer 22

Sequence control field

Question 23

This field has all of the data of the protocols further up the stack

Answer 23

Data payload

Question 24

Contains a checksum used for a cyclical redundancy check, just like how ethernet does

Answer 24

FCS (Frame check sequence) field