Deck 3: Physical and Network Layer Vulnerabilities and Communication System Concepts

Question 1

Which of the following is an example of physical layer vulnerability?

A)mac address spoofing
B)physical theft of data
C)route spoofing
D)weak or non-existent authentication

Answer 1

physical theft of data

Question 2

Which of the following is an example of data-link layer vulnerability?

A)mac address spoofing
B)physical theft of data
C)route spoofing
D)weak or non-existent authentication

Answer 2

mac address spoofing

Question 3

Which of the following is an example of network layer vulnerability?

A)mac address spoofing
B)physical theft of data
C)route spoofing
D)weak or non-existent authentication

Answer 3

route spoofing

Question 4

Which of the following is an example of physical layer vulnerability?

A)mac address spoofing
B)route spoofing
C)weak or non-existent authentication
D)keystroke & other input logging

Question 5

Which of the following is an example of data-link layer vulnerability?

A)physical theft of data
B)vlan circumvention
C)route spoofing
D)weak or non-existent authentication

Question 6

Bits can be sent over guided and unguided media as analog signal by                        

A)digital modulation
B)amplitude modulation
C)frequency modulation
D)phase modulation

Question 7

The portion of physical layer that interfaces with the media access control sublayer is called                        

A)physical signalling sublayer
B)physical data sublayer
C)physical address sublayer
D)physical transport sublayer

Question 8

In the digital communication system, signals in different frequency bands are

A)orthogonal
B)non orthogonal
C)orthogonal & non orthogonal
D)none of the mentioned

Question 9

Properties of impulse function are

A)symmetry
B)time scaling
C)shifting
D)all of the mentioned

Question 10

Properties of Fourier transform are

A)duality property
B)time shifting property
C)modulation property
D)all of the mentioned

Question 11

A base-band signal can be up-converted using

A)sine wave
B)cosine wave
C)filtering
D)none of the mentioned

Question 12

A band-pass signal can be down-converted using

A)sine wave
B)cosine wave
C)time delayed wave
D)none of the mentioned

Question 13

In down-conversion multiplication with cosine wave is followed by

A)low pass filter
B)high pass filter
C)bandpass filter
D)bandstop filter

Question 14

Fourier transform of a signal gives the

A)frequency content
B)bandwidth
C)frequency content & bandwidth
D)none of the mentioned

Question 15

Random things in a communication system are

A)timing offset
B)device frequency
C)attenuation
D)all of the mentioned

Question 16

Which can be used for periodic and non periodic?

A)fourier series
B)fourier transforms
C)fourier series & transforms
D)none of the mentioned

Question 17

A band-pass signal has a Fourier transform equal to

A)one
B)zero
C)infinity
D)cannot be determined

Question 18

A band-pass signal has

A)dc component
B)no dc component
C)no side lobes
D)cannot be determined