Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Electrical & Electronics Expert

problem1) An ex of an active attack is an attack where someone is eavesdropping on a communication line to capture information being transmitted.

 • True
 • False

problem2) How can a symmetric encryption algorithm be figured out or "cracked"?

A. Cryptanalysis
B. Denial of service
C. Man in the middle
D. Brute force
E. Eavesdropping

1) A, D
2) A, B
3) A, E
4) B, C
5) D, E
6) A, C

problem3) The number of passwords that can be generated from the set of characters {a,b,c,d} with replacement is? (replacement means you can use each character multiple times)

1) 64
2) 24
3) 256
4) 512
5) 1024

problem4) The standard that defines and guides Public Key Infrastructure is:

1) X.800
2) X.509
3) RFC 3280
4) Document - New Directions in Cryptography
5) ASN.1 for PKIX

problem5) Assume there are 256 possible keys in the universe of keys for a particular cipher. How many keys on average would need to be tried to break the cipher?

problem6) A message is sent using a Message Authentication Code (MAC). An attacker intercepts the message, changes the message and sends it to the original recipient. The recipient of the message will not detect the change.

• True
• False

problem7) A block encryption algorithm encrypts fixed size blocks.

• True
• False

problem8) The number of passwords that can be generated from the set of characters {a,b,c,d} without replacement is? (without replacement means you can use each character once and only once)

1) 24
2) 64
3) 128
4) 256
5) 512

problem9) A digital certificate is issued with a digital signature from a certificate authority. The digital certificate binds together a public key with an identity.

• True
• False

problem10) The difference between the DES and 3DES algorithms is?

1) DES is symmetric encryption. 3DES is asymmetric encryption.
2) DES uses 16 subkeys for encryption and decryption, 3DES uses 3.
3) DES uses 1 key for encryption and decryption; 3DES uses 3 keys.
4) 3DES uses a Feistel network, DES does not.
5) None of the answers are correct.

problem11)

Using a rail fence cipher with depth of 2 decrypt the following ciphertext: TEATIAMDIH HPRYSTINGT_______

problem12) XOR the two values together.

Select the correct result.

0110 1011 1111
1101 1100 1100

1) 0100 1000 1100
2) 1011 0111 0011
3) None of the selections
4) 1111 1111 1111
5) 0100 1000 1100

problem13) An attribute of randomness that can be used to determine the strength of a password is known as?

1) Entropy
2) Diffusion
3) Confusion
4) Maturation
5) Reversability

problem14) The standard that guides Security Architecture for OSI:

1) X.800
2) X.504
3) FIPS Pub 200
4) X.895 Security Standard
5) RFC 2828

Electrical & Electronics, Engineering

  • Category:- Electrical & Electronics
  • Reference No.:- M92939

Have any Question? 


Related Questions in Electrical & Electronics

Two-wattmeter method is used to measure the power taken by

Two-wattmeter method is used to measure the power taken by a 3-phase induction motor on no load. The wattmeter readings are 375w and -50w. Calculate; i) power factor of the motor at no load. ii) phase difference of volta ...

Show how the input controller described in example 813 on

Show how the input controller described in Example 8.13 on page 364 can be used for a volume control knob with an incremental encoder. Example 8.13 Design an input controller that has 8-bit binary-coded input from a sens ...

A speech signal has a bandwidth of 3 khz and an rms voltage

A speech signal has a bandwidth of 3 kHz and an rms voltage of 1 V. This signal exists in background noise which has a level of 5 mV rms. Determine the signalto-noise ratio and the information rate of the digitized signa ...

Identify the control steps required for sequential

Identify the control steps required for sequential multiplication using the datapath described in Example 4.4, and develop a finite-state machine for the control section. Assume that the x and y operand values are valid ...

Repeat given problem for the circuit of given figure

Repeat given problem for the circuit of given figure, replacing IL with IC in parts (c) and (d). Problem For the circuit of given figure: a. Find the total admittance Y T  in polar form. b. Draw the admittance diagram. c ...

For the circuit in given figure the transistor parameters

For the circuit in given Figure, the transistor parameters are: h FE  = 150, V BE  (on) = 0.7 V, and V A  = ∞. Determine the value of R F  that will result in a closed-loop voltage gain of Av = V o /V s  = -5.0.

A what is the saturated synchronous reactance of this

(a) What is the saturated synchronous reactance of this generator at the rated conditions? (b) What is the unsaturated synchronous reactance of this generator? (c) Plot the saturated synchronous reactance of this generat ...

Rg-402u semirigid coaxial cable has an inner conductor

RG-402U semirigid coaxial cable has an inner conductor diameter of 0.91 mm and a dielectric diameter (equal to the inner diameter of the outer conductor) of 3.02 mm. Both conductors are copper, and the dielectric materia ...

For the network of given figurea write the mathematical

For the network of given figure: a. Write the mathematical expression for the current i L  and the voltage v L  following the closing of the switch. b. Determine the mathematical expressions for i L   and v L  if the swi ...

Calculate the diamagnetic susceptibility of germanium take

Calculate the diamagnetic susceptibility of germanium. Take r = 0.92 A. (Note: Check your units! Does X come out unitless? Compare your result with that listed in Table 14.1.)

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

A cola-dispensing machine is set to dispense 9 ounces of

A cola-dispensing machine is set to dispense 9 ounces of cola per cup, with a standard deviation of 1.0 ounce. The manuf

What is marketingbullwhat is marketing think back to your

What is Marketing? • "What is marketing"? Think back to your impressions before you started this class versus how you

Question -your client david smith runs a small it

QUESTION - Your client, David Smith runs a small IT consulting business specialising in computer software and techno

Inspection of a random sample of 22 aircraft showed that 15

Inspection of a random sample of 22 aircraft showed that 15 needed repairs to fix a wiring problem that might compromise

Effective hrmquestionhow can an effective hrm system help

Effective HRM Question How can an effective HRM system help facilitate the achievement of an organization's strate