Introduction Of Computer by Lalit Bansal
Internet and Networks Computer network is a group of computers linked together, so that they can share information and resources. Internet is “network of networks”. It can also be described as information highway. It is the world’s largest network of computers. ... Client and Server: The term client refers to the application involved in a communication that actively initiates the contact and the term server refers to the application that passively waits for contact. ... The first one TCP (Transmission Control Protocol) is a reliable, connection –oriented protocol that allows stream of...

Basic Problem in a PC by Pawan Bangar
I have a p3 500MHz PC with 128MB RAM, 10.2 GB HDD Sony CD ROM 48x with window ME edition operating system. I have a problem- when I insert my audio cd, it shows the error message: “window cannot access the specified device path or file. You may not have appropriate permission the access the... Birbals: digital signature an encryption and decryption process allowing both the positive identification of the author of an electronic message (who wrote the message) and verification of integrity of the message.

How Do Spammers Harvest Email Addresses? by Sandeep Kautish
Introduction It is often difficult or impossible to tell how a spammer acquired a user's e-mail address. Is it a result of some activity the user engaged in? Did the user give his/her e-mail address to the wrong person? Is the user randomly targeted? ... Then they wait for either an error message to return by email, indicating that the email address is correct, or for a confirmation. ... Using the HTTP_FROM header that browsers send to the server.Some browsers pass a header with your email address to every web server you visit.

Computer Hard Drive Recovery Ideas by Jeffrey Meier
If you have never faced the loss of data, you still need to take precautions that your server, hard disk or RAID stay in good health. Also, you need to have some sort of plan in mind to help you in case there is any problem. Data losses, if and when they happen, take time to amend and may be... • Server Crash: In case you had been working on server and it has crashed, never try data recovery on the same server. ... • Locate logical corruption: This can be easily found by booting from the floppy or using the F disk and then viewing the partitioning information.

Microsoft Great Plains Security Setup - Overview For Consultant by Andrew Karasev
Microsoft Business Solutions Great Plains is very good fit for mid-size company and probably good budget solutions for large corporation. Former product name was Great Plains Dynamics / eEnterprise. Both versions: old and new are Great Plains Dexterity written and Dexterity itself was planned as... When you give this user new computer and do not take care on transferring REPORTS.DIC from the old machine – user will get error message – can not open report: dictionary not found. ... Currently Great Plains (version 8.0 and coming 8.5) is MS SQL Server based and the last multi-database version...

Review Of XClone From Babboo by James Koopmann
XClone from Babboo.com is a completely automated solution for cloning Oracle databases and Oracle applications. As far as I have been able to determine these guys are the only company that clones both and accomplishes it in a fully automated fashion. ... The first time I did this I had forgotten to start my XClone server and thus I got an error. ... Now let’s install the XClone Server Software In the default directory for the client software, “C:Program FilesBabbooXCloneservers” you will find a directory for Windows and one for Unix.

Challenges of SOA Testing by Jason English
Why is SOA testing such a different beast than previous forms of browser, client/server and mainframe testing? Many of the benefits of SOA become challenges to testing an SOA application. 1. SOA is distributed by definition Services are based on heterogeneous technologies. ... It becomes much harder to predictably find the source of a problem when you cannot get direct insight into why two or more disparate technologies do not create a cohesive application. ... And expecting developers to find missed requirements by conducting more unit testing at the code level doesn't get the team...

Disaster Recovery by Prabir Sen
In today's world, businesses are beginning to demand more from their information systems. At the same time, the outer limit of technology is being stretched to its limit to meet this demand. This in turn puts a greater responsibility on the service Organisation, with the kind of daunting... To understand a recovery process, you should first understand your current state, find out ways mitigating the risks, and last of all make a thorough plan of recovery. ... If you find that it is making you taking chances, there are such services available, who are professionally experienced, equipped...

WRT54g Linux Firmware Distributions by Eric Meyer
HYPERWRT Mission Statement is “HyperWRT is a power boost firmware for the Linksys WRT54G and WRT54GS router. The goal of this project is to add a limited set of features to the last Linksys firmware, extending its possibilities but staying close to the official firmware.” HYPER-WRT –... When I started NOCAT splash and connected to the internet I did receive an error “NO DATA ON THIS PAGE” once in a while but that could be my fault some how. ... Administration Tab – If you go all the way to the bottom you will find the option for enabling WDS/connection watch dog.

Virtual Private Network Frequently Asked Questions by Aaron Adams
1. Why do I get disconnected after 4 hours of use? You will get disconnected because of the limited number of ports and the fact that 90% of all users do not need to be connected more than 4 hours, all units have been set to a 4-hour time limit. If you require more time, you should disconnect... When trying to load the VPN Client on a Dual Processor unit you get an error message. ... Cause 1: A DNS server may not be configured for IPsec connections on the Contivity VPN Switch. ... Cannot VPN Web Servers on the Internet after Establishing a Contivity VPN Client Connection.