Question 1amake a distinction between passive and active

Assignment Help Computer Networking
Reference no: EM13349526

QUESTION 1

(a)Make a distinction between passive and active attacks.

(b)Provide two reasons why it is very important to organise security awareness programs for users.

(c)Give explanation how symmetric cryptography provides

i. confidentiality

ii. authentication.

(d)What are the two sorts of operations used by symmetric cryptography?

(e)Give explanation for Kerchoff's principle.

(f)Which cryptanalytic attack is approximately theoretically feasible?

(g)State the four conditions that have to be satisfied for the one-time pad algorithm to provide unconditional security.

(h)Why is it that the one-time-pad algorithm gives unconditional security?

QUESTION 2

(a)Explain the two probable configurations for 3DES.

(b)What is the main drawback of 3DES?

(c)Why are mainly modern symmetric algorithm block ciphers?

(d)Give explanation for four weaknesses of symmetric cryptography.

(e)Presume that Alice have to send bulk data to a remote user Bob. Illustrate how Alice would use both symmetric and asymmetric cryptography to achieve both security and efficiency in terms of encryption time.

QUESTION 3

(a)Which PKI (Public Key Infrastructure) model is characteristically favored by business organization?

(b)Provide one possible use of the "extensions" ground of an X.509 certificate.

(c)Consumers in a PKI can obtain digital certificates of users they want to communicate with. Which protocol is typically used to interact with the directory server to obtain certificate(s)?

(d)Estimate the RSA public and private keys given the values of p and q as follows: p = 17; q = 11. Show details of workings. Choose e = 7.

(e)What is meant by Certificate Revocation? When would a certificate have to be cancelled?

(f)Alice and Bob are communing.

i. Give details how Alice and Bob can communicate such that all their communication can be authenticated and can be verified for integrity. Confidentiality is not required.

ii. Alter your answer such that now it also provides replay attack detection.

QUESTION 4:

(a)Regard the following authentication options:

A. Using password.

B. Using pin and fingerprint

Which option A or B gives stronger security and why?

(b)Provide one example of a strong password. Why should passwords be strong?

(c)In quantum cryptography, light is polarized before transmission. If a wave of light is polarized first by 00 followed by 450 and finally by 900, what is the intensity of the light after each polarization i.e. after 00, after 450 and after the final 900. Presume intensity of incident light is Io

(d)How can network datagrams (packets) be protected at the network layer?

(e)Does SSL protect against eavesdropping? Does SSL protect against traffic analysis? Give good reason for your answer.

(f)Name or provide three SSL protocol from the SSL protocol stack.

QUESTION 5

(a)Confer three security issues related to cellular networks.

(b)Briefly portray three different types of attack that can be undertaken on the cellular network infrastructure.

(c)What is the WAP protocol?

(d)What was the underlying principle following developing WAP2 protocol stack in regard to the existing WAP1 protocol stack?

(e)Draw the protocol stack for WAP2.

Reference no: EM13349526

Questions Cloud

Question 1figure 1 underneath shows the human development : question 1figure 1 underneath shows the human development index hdi and annual per capita energy utilization in kilo
Question 1there are many of issues affecting cost of : question 1there are many of issues affecting cost of software. list and explain the five parts affecting pricing in
Question 1a pool of newly qualified doctors are not : question 1a pool of newly qualified doctors are not satisfied with their existing revenue and decide to set up an
Question 1a is an intrusion avoidance system more like a : question 1a is an intrusion avoidance system more like a honeypot or a firewall? describe why?b what does the quality
Question 1amake a distinction between passive and active : question 1amake a distinction between passive and active attacks.bprovide two reasons why it is very important to
Question 1a differentiate between confidentiality integrity : question 1a differentiate between confidentiality integrity and availability. demonstrate your answer using an
Question 1ai why has stuxnet virus been named as a : question 1ai why has stuxnet virus been named as a cyber-weapon?ii what has been the first identified target of the
Question 1a list and illustrate seven security conceptsb : question 1a list and illustrate seven security concepts.b give explanation of the following eight common threats facing
Case studynetworks are evolving scalability presentation : case studynetworks are evolving. scalability presentation acts reliability safety measures and cost considerations are

Reviews

Write a Review

 

Computer Networking Questions & Answers

  What is the full address of the abbreviated ipv6

Given the following IPv6 addresses in hexadecimal colon notation, answer the following questions. Where applicable leave your answers in fully expanded hexadecimal colon notation.

  Develop best practices to address web server

Develop Best Practices to address Web server and wireless network threats.

  Explaining security-aware caching resolver

Suppose a security-aware caching resolver receives DNS RRset at time t0 with signatures on it which expire at time t1 (where t0

  Determine mean time to spend frame to another station

Determine the mean time to spend frame of 1000 bits to another station, measured from beginning of transmission to end of reception? Suppose propagation speed of 100 m/μs.

  Developing the network design

The Fiction CEO has informed you that the capital budget cannot exceed $500,000 and must not interrupt business operations. What follows is a brief overview that will serve as your foundation in developing the network design.

  Formula for the correction factor for mobile antenna

Explain fully why you chose that solution, why it is of more advantage than the other solutions.  Explain what other specific (how high, how much power, etc.) choices you might suggest to increase system performance as measured by received signal ..

  Explain graphic files were transmitted by a e-mail

Several graphic files were transmitted by a e-mail from the unknown source to suspect in the ongoing investigation. Lead investigator provides you these graphics files and tells you that at least four messages must  be embedded in them.

  Program to compute employee-s weekly pay

Write down the program which reads the employee's number from keyboard, number of hours worked and the hourly rate of pay.

  Diane the consultant summary of case

Case study:Diane the consultant Summary of case : Construct a diagram using Rationale to map the arguments about a moral claim that you have identified in the article/case study:

  Case study - diane the consultant

Construct a diagram using Rationale to map the arguments about a moral claim that you have identified in the article/case study:

  What else is needed to replace the pbx

In addition to Internet phone software and the interface in Part b (above) what else is needed to replace the PBX?

  Design a wireless network

(15%) Allen FINALLY has been able to secure broadband service to his home in a remote area of the country via newly installed telephone lines. He had a powerful desktop. But he wants to be able to sit on his deck when using his new laptop to do his o..

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd