Module 10

Question 1

What are the most widely used wireless networks?

Answer 1

Cellular networks, operated by telecom service providers.

Question 2

What is the purpose of fixed wireless networks?

Answer 2

To provide internet access to areas with no wired infrastructure.

Question 3

Who owns, manages, and charges for cellular networks?

Answer 3

Telecom providers.

Question 4

What type of wireless technology uses radio frequency transmission?

Answer 4

Bluetooth.

Question 5

What are some categories of Bluetooth use?

Answer 5

Automotive, Personal, Home Entertainment, Computer, Sports & Fitness, Health.

Question 6

What are some examples of Bluetooth devices?

Answer 6

Hands-free system, wireless headphones, smart door locks, wireless keyboards, heart rate monitors, blood pressure monitors.

Question 7

What are some common Bluetooth usage scenarios?

Answer 7

Browsing phone, creating playlists, controlling door locks remotely, monitoring heart rate and sleep, sampling data for analysis.

Question 8

What is the latest Bluetooth version as of 2023?

Answer 8

Bluetooth 5.4.

Question 9

What is Bluetooth Basic Rate/Enhanced Data Rate (BR/EDR) used for?

Answer 9

Sharing range with continuous connectivity.

Question 10

What is the data rate for Bluetooth Low Energy (LE)?

Answer 10

1 Mbps, 2 Mbps, 3 Mbps.

Question 11

What are the ranges for Bluetooth connectivity?

Answer 11

130 ft (40m), 260 ft (80m), 400 ft (120m).

Question 12

What factors affect Bluetooth network topology?

Answer 12

Distance, transmission power, and antenna gain.

Question 13

What are the roles in Bluetooth network topology?

Answer 13

Broadcaster, Observer, Follower (active and inactive).

Question 14

What are the two types of Bluetooth network topology?

Answer 14

Point-to-point and point-to-multipoint.

Question 15

What additional topology does Bluetooth LE support?

Answer 15

Many-to-many or mesh networks, which may extend the network range.

Question 16

What is a scatternet?

Answer 16

A network of piconets, rarely used.

Question 17

What is Bluejacking?

Answer 17

An attack that sends messages (text, sound, images) to Bluetooth devices, considered annoying but not harmful.

Question 18

What is Bluesnarfing?

Answer 18

An attack that accesses and copies information through a Bluetooth connection.

Question 19

What is Near Field Communication (NFC)?

Answer 19

A communication protocol allowing two electronic devices to communicate over 4 cm or less.

Question 20

What are the roles in NFC communication?

Answer 20

Initiator (actively generates RF field) and Target (can be powered passively).

Question 21

What are examples of NFC usage?

Answer 21

Wireless payments, public transport payment systems, computer setup.

Question 22

What are NFC vulnerabilities?

Answer 22

Eavesdropping, data theft, MITM attacks, device theft.

Question 23

What are defenses against NFC attacks?

Answer 23

Limiting range, encryption, secure elements, authentication.

Question 24

What is Radio Frequency Identification (RFID)?

Answer 24

The use of radio waves to read and capture information from a tag attached to an object.

Question 25

How far can an RFID tag be read from?

Answer 25

Several feet away, without requiring direct line-of-sight.

Question 26

What is the maximum amount of data an RFID tag can transmit?

Answer 26

2048 bytes.

Question 27

What are some uses of RFID?

Answer 27

Animal identification, inventory management, retail tracking, automated toll collection.

Question 28

What are some RFID vulnerabilities?

Answer 28

Fake tags, data theft, undermining data integrity.

Question 29

What are defenses against RFID attacks?

Answer 29

Encryption, secure protocols, physical security.

Question 30

What common items contain embedded RFID chips?

Answer 30

Contactless credit cards, passports, hotel key cards, Enhanced Driver’s License (EDL).

Question 31

How do RFID passports work?

Answer 31

Embedded in the front cover and must be open to transmit information.

Question 32

What security measure makes it harder to steal passport RFID data?

Answer 32

The passport must be open for transmission, requiring attackers to steal the entire passport.

Question 33

What is an Enhanced Driver’s License (EDL), and how does it use RFID?

Answer 33

Some states and border crossings use EDLs; biometric data is retrieved when an RFID signal is sent.

Question 34

What information is stored on a hotel key card?

Answer 34

Dates of stay, room number, and authorized guests.

Question 35

What type of RFID do hotel key cards use?

Answer 35

Low-frequency (LF) RFID.

Question 36

Why is it difficult for attackers to steal RFID data from hotel key cards?

Answer 36

Short-range LF RFID limits the effectiveness of data theft.

Question 37

What frequency does RFID blocking technology target?

Answer 37

13.56 MHz.

Question 38

What type of RFID signals do RFID-blocking wallets block?

Answer 38

Low-frequency signals such as hotel room cards, building access cards, and ID badges.