Wireless Concept

Question 1

Which type of antenna is used in wireless communication

Answer 1

Omnidirectional

Question 2

antennas radiate electromagnetic energy in all directions

Answer 2

Omnidirectional

Question 3

method of digital modulation of data in which a signal, at a chosen frequency, is split into multiple carrier frequencies that are orthogonal (occurring at right angles) to each other

Answer 3

Orthogonal Frequency-division Multiplexing (OFDM)

Question 4

Influences the spectral efficiency of 4G and 5G wireless communication services. Technique reduces the interference and increases how robust the channel is.

Answer 4

Multiple input, multiple output-orthogonal frequency-division multiplexing (MIMO-OFDM)

Question 5

Spread spectrum technique that multiplies the original data signal with a pseudo random noise spreading code. Also referred to as a data transmission scheme or modulation scheme, the technique protects signals against interference or jamming.

Answer 5

Direct-sequence Spread Spectrum (DSSS)

Question 6

Transmitting radio signals by rapidly switching a carrier among many frequency channels

Answer 6

Frequency-hopping Spread Spectrum (FHSS)

Question 7

Antennas can achieve very long-distance Wi-Fi transmissions by using a highly focused radio beam. This type of antenna is useful for transmitting weak radio signals over very long distances – on the order of 10 miles

Answer 7

A parabolic grid antenna

Question 8

centralized authentication and authorization management system

Answer 8

RADIUS

Question 9

protocol that encapsulates the EAP within an encrypted and authenticated Transport Layer Security (TLS) tunnel.

Answer 9

PEAP

Question 10

proprietary version of EAP developed by Cisco

Answer 10

LEAP

Question 11

It is an encryption protocol used in WPA2 for stronger encryption and authentication

Answer 11

CCMP

Question 12

availability attacks

Answer 12

Beacon Flood, Denial-of-Service, Routing Attacks, Authenticate Flood

Question 13

Generating thousands of counterfeit 802.11 beacons to make it hard for clients to find a legitimate AP.

Answer 13

Beacon Flood

Question 14

Exploiting the CSMA/CA Clear Channel Assessment (CCA) mechanism to make a channel appear busy.

Answer 14

Denial-of-Service

Question 15

Distributing routing information within the network.

Answer 15

Routing Attacks

Question 16

Sending forged authenticates or associates from random MACs to fill a target AP’s association table.

Answer 16

Authenticate Flood

Question 17

proof of concept code for a Bluetooth wardriving utility. It is useful for finding hidden and discoverable Bluetooth devices.

Answer 17

BlueSniff

Question 18

an attack in which an attacker gains remote access to a target Bluetooth-enabled device without the victim being aware of it. In this attack, an attacker sniffs sensitive information and might perform malicious activities such as intercepting phone calls and messages, forwarding calls and text messages, etc.

Answer 18

Bluebugging

Question 19

Foot printing technique performed by an attacker in order to determine the make and model of the target Bluetooth-enabled device. Attackers collect this information to identify model, manufacturer, etc. and analyze them in an attempt to find out whether the devices are in the range of vulnerability to exploit.

Answer 19

BluePrinting

Question 20

Attack is a passive attack in which attackers spoof the MAC address of the target Bluetooth-enabled device, in order to intercept or manipulate the data sent towards the target device.

Answer 20

MAC Spoofing Attack

Question 21

Blackjack Attack

Answer 21

BBProxy

Question 22

Re-purposed access points that do only packet capturing and analysis (RF sensors) are plugged in all over the wired network to detect and warn the WLAN administrator about any wireless devices operating in the area.

Answer 22

RF Scanning

Question 23

Network management software uses this technique to detect rogue APs. This software detects devices connected in the LAN, including Telnet, SNMP, CDP (Cisco discovery protocol) using multiple protocols.

Answer 23

Wired Side Inputs

Question 24

Access points that have the functionality of detecting neighboring APs operating in the nearby area will expose the data through its MIBS and web interface.

Answer 24

AP Scanning

Question 25

A Virtual Private Network (VPN) is a network that provides secure access to the private network through the internet. VPNs are used for connecting wide area networks (WAN). It allows computers on one network to connect to computers on another network.

Answer 25

Virtual-Private-Network

Question 26

It is a technique used to provide wireless security by hiding the SSID and network name from public broadcasting. Use SSID cloaking to keep certain default wireless messages from broadcasting the ID to everyone.

Answer 26

SSID Cloaking

Question 27

use of Bluetooth to send messages to users without the recipient’s consent, similar to email spamming.

Answer 27

Bluejacking

Question 28

Attack occurs when an attacker sends an oversized ping packet to a victim’s device, causing a buffer overflow

Answer 28

Bluesmacking

Question 29

a passive attack in which attackers spoof the MAC address of the target Bluetooth-enabled device, in order to intercept or manipulate the data sent towards the target device.

Answer 29

MAC Spoofing