WIRELESS DAY 1

Question 1

Connect widely separated networks via multiplexed channels.

Regional to global connections.

Answer 1

Wireless Wide Area Networks (WWAN)

Question 2

Networks which include implants and wearable devices.

Typical coverage up to 1 meter.

Answer 2

Wireless Body Area Network (WBAN)

Question 3

Groups of dedicated sensors to monitor and record their environment.

Typically low-power/short-range communications deployed in mesh architecture .

10-20 meters between sensors
Can have thousands of sensors

Answer 3

Wireless Sensor Networks (WSN)

Question 4

Home and office networks. Most common protocol is Wi-Fi.

Typical coverage up to 100 meters.

Answer 4

Wireless Local Area Network (WLAN)

Question 5

Wireless connection of peripheral devices via Bluetooth, ZigBee, Z-Wave, etc.

Typical coverage area up to 10 meters.

Answer 5

Wireless Personal Area Networks (WPAN)

Question 6

Dedicated communication channels leased to customers by service providers.

City-sized networks. Typical range up to 30 miles.

Answer 6

Wireless Metropolitan Area Networks (WMAN)

Question 7

Provides access to the radio frequency (RF) physical layer.

Answer 7

Radio Adapter

Question 8

Houses CPU, GPU, display and video processors, cellular modems, and other hardware functionality.

Answer 8

System-on-a-Chip (SoC)

Question 9

Functions as primary input device on many mobile devices.

Answer 9

Display

Question 10

Comes in the form of RAM memory and Flash memory.

Answer 10

Storage

Question 11

Examples of common sensors:

Answer 11

accelerometer, gyroscope, digital compass, ambient light sensor, and proximity sensor.

Question 12

Three components of the camera.

Answer 12

sensor, lens, and image processor

Question 13

Antenna constructed of a loop of wire

Answer 13

NFC/RFID Antenna

Question 14

Cellular antenna on mobile devices capable of receive-only functionality

Answer 14

Diversity Cellular Antenna

Question 15

Examples of Semi-directional Antenna

Answer 15

Patch/Panel, Yagi, or Sector

Question 16

Examples of omnidirectional Antenna

Answer 16

Dipole or Whip

Question 17

Highly focused beam for long-range communication up to 30-miles

Most amount of gain

Answer 17

Highly-directional

Question 18

2 or 4 of these antenna are present on mobile devices

Answer 18

Cellular Antennas

Question 19

Receive-only antenna used to determine physical location

Answer 19

GPS Antenna

Question 20

Examples of a highly-directional Antenna

Answer 20

Parabolic Dish or Grid

Question 21

Cellular antenna on mobile devices capable of two-way communications

Answer 21

Primary Cellular Antenna

Question 22

Provide 360 degree coverage around the axis of the antenna

Least amount of gain

Answer 22

omnidirectional

Question 23

Provides coverage in a beam pattern less than 120 degrees

Answer 23

Semi-directional

Question 24

Email phishing is a form of…

Answer 24

Social Engineering

Question 25

Poor passcode hygiene could end with a compromise of …

Answer 25

Physical Security

Question 26

Encryption attempts to secure this aspect of wireless communications.

Answer 26

Confidentiality

Question 27

May be compromised by the unbounded nature of wireless communications.

Answer 27

Confidentiality

Question 28

may be compromised by man-in-the-middle attacks.

Answer 28

integrity

Question 29

Hardest aspect of wireless communications to secure or harden.

Answer 29

Availability

Question 30

devices may be compromised through publicly-known vulnerabilities in …

Answer 30

out of date software

Question 31

Antennas provide _________ by focusing the radiation patter in a certain direction.

Answer 31

passive gain

Question 32

Amplifiers provide _________ by injecting extra energy into the communications path between the radio the antenna.

Answer 32

Active gain