Week 3 not graded questions answer key

Week 3 not graded questions answer key - Week 3 ungraded...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Week 3 ungraded questions answer key Chap 4. 6. Define two fundamental types of errors. There are two fundamental types of errors: human errors and network errors. Human errors, such as a mistake in typing a number, usually are controlled through the application program. Network errors, such as those that occur during transmission, are controlled by the network hardware and software. There are two categories of network errors: corrupted data (data that have been changed) and lost data. 16. Describe three approaches to detecting errors, including how they work, the probability of detecting an error, and any other benefits or limitations. Three common error detection methods are parity checking, longitudinal redundancy checking, and polynomial checking (particularly checksum and cyclic redundancy checking). One of the oldest and simplest error detection methods is parity. With this technique, one additional bit is added to each byte in the message. The value of this additional parity bit is based on the number of 1’s in each byte transmitted. This parity bit is set to make the total number of ones in the byte (including the
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 03/11/2011 for the course CIS 589 taught by Professor Dave during the Spring '11 term at Keller Graduate School of Management.

Page1 / 2

Week 3 not graded questions answer key - Week 3 ungraded...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online