Define checksum, Computer Network Security

Assignment Help:

The method used to check errors is checksum. In this method data is treated as a sequence of integers and their arithmetic sum is calculated and the carry bits are added to the final sum. Then checksum is calculated by transmission then it is sent along the data and the receiver and the same camputation is done and then compared with the original checksum transferred. In this way errors are checked if the received checksum is different from the sender.

The figure explained the example.

704_CheckSum.png

The integers may be 8,32 or 16 bits. Checksum is easy to check. It needs only addition but it has also limitations and can not check all errors. As given below.

 

 

1542_CheckSum.png


Related Discussions:- Define checksum

Quote, How much would it cost to have a project completed by tomorrow night...

How much would it cost to have a project completed by tomorrow night?

What is information security, What is information security Information s...

What is information security Information security protects information (and facilities and systems which store, use and transmit it) from a broad range of threats, in order to p

Characteristics of radial basis function neural networks, Problem : (a)...

Problem : (a) Provide one possible classification of PCA, ART, RBF, and Fuzzy ARTMAP networks. (b) Describe in detail the characteristics of Radial Basis Function Neural Net

Information asset classification-risk management, Information asset classif...

Information asset classification-risk management A number of organizations have data classification schemes (for instance confidential, internal, public data). The classificat

Potential risks to information systems, Information System Security 1. ...

Information System Security 1. Write about: a. Potential Risks to Information Systems b. Factors to be addressed for making information systems more secure 2. Write about t

Implement database security, Question: (a) Describe fully with example ...

Question: (a) Describe fully with example the two access control methods available to implement database security. (b) Discuss why database statistics (meta data) provide es

Web accessibility initiative standards, Australian government sites were ma...

Australian government sites were mandated to conform to at least single 'A' level of the World Wide Web Consortium (W3C) Web Accessibility Initiative (WAI) standards, by the end of

Explain the various costs of quality, Problem 1: Show what are the bene...

Problem 1: Show what are the benefits of project quality management? • Customer satisfaction • Reduced cost • Increased competitiveness • Fulfilment of social and economic r

Emulation, In this section, you should create a program that emulates a GBN...

In this section, you should create a program that emulates a GBN node. Two GBN nodes will be running to send packets to each other through the UDP protocol. For emulation purpose,

Routing protocol for a banking network, You have been asked to design a Ban...

You have been asked to design a Banking Network with two primary types of locations.  Branches that will have 3 subnets, one /25 subnet one /26 subnet for ABMS and one /26 s

Write Your Message!

Captcha
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