If you want to learn Linux / Unix command but don't want to install it, here is something interesting for you.
"PC Emulator" created by "Fabrice Bellard" allows you to test Linux commands in your favorite web browser. No need to install Linux, Click on window and wait for # command line,
OR simply open the URL in browser and test desired Linux commands.- PC Emulator
This PC emulator is written in Javascript and support following browsers officially :
I am currently revising for an EMC exam and part of the course material involves doing some training on the Navisphere simulator. No problems, except where on earth do you download the simulator software? I searched for ages before finding out that you only get access to it on EMC PowerLink if you are an EMC employee, partner or you have bought the relevant training. I had done the latter but still couldn’t get it downloaded for some reason, that’s when a google search turned up a link to the following page which required no credentials, EMC Education Services product simulators.
ControlCenter3 is a software utility that lets you quickly and easily access your often used applications. Using ControlCenter3 eliminates the need to manually launch specific applications.
Smclient formally named "Terminal Server Client Simulation", is a tool designed for simple simulation of multiple client connections to a Terminal Server.
Like many testing and simulation tools, however, its usability goes far beyond the original design goal. Smclient enables automated logon/logoff/disconnect, with activity which can be controlled by a decently-sized scripting language. Since it displays the mstsc.exe GUI, you can even start a session and intervene. It has some excellent verbose debugging options, so running it while attempting to connect to a remote system will allow you to do some nice diagnostics.
RouterSim's CCNA™ Network Visualizer® 6.0 is a CCNA™ router and network simulator that offers more features and flexibility than any product on the market. You can design, build and configure your own network. With a program that offers 500 supported commands and over 190 labs, you are empowered to build, test and preview a large variety of networks
NetSim for CCNP includes new labs for theROUTE,SWITCHandTSHOOTtechnologies. In addition to new content, NetSim for CCNP 8.0 contains a new and improved interface that makes completing labs, compiling new labs and designing network topologies easier than ever before. The network topology, device consoles and lab instructions can share the screen in NetSim 8.0 with easy-to-use panes. NetSim 8.0 also supports multiple monitors.
I’m currently revising for an EMC exam and part of the course material involves doing some training on the Navisphere simulator. No problems, except where on earth do you download the simulator software? I searched for ages before finding out that you only get access to it on EMC PowerLink if you are an EMC employee, partner or you have bought the relevant training. I had done the latter but still couldn’t get it downloaded for some reason, that’s when a google search turned up a link to the following page which required no credentials, EMC Education Services product simulators.
I managed to download the latest version for EMC Flare release 28 without issue. I was however asked for my EMC PowerLink credentials when I first opened the simulator so perhaps that’s how it’s authenticated against the training purchased. It’s a really good learning aid and I’ve been able to find out how to do things on it that I wouldn’t have dared to attempt on our actual CLARiiON implementation. Hope this link helps someone who’s searching for this, took me ages to find it.
"Routersim Ccna Network Visualizer" in Software Title
1. Network Visualizer - CCNA Network... RouterSim Network Visualizer 4.0 is a CCNA network simulator that allows you to design, build and configure your own network with drag and drop design. Use unlimited devices, 432 commands and work with 233 supported labs in building your virtual.
2. killtest CCNA certification 640-801... High quality and Value for the 640-801 Exam.Killtest Practice Exams for Cisco Certified Network Associate (CCNA) 640-801 are written to the highest standards of technical accuracy, using only certified subject matter experts and published authors.
3. SimulationExams.com CCNA Intro Exams 1.0 About CCNA Intro- The exam is one of two-part CCNA. CCNA 640-801 can be taken in one sitting (by taking 640-801 exam) or in two sittings (by taking CCNA Intro and CCNA ICND separately).
4. SimulationExams.com CCNA ICND Exams 1.0 About CCNA Intro- The exam is one of two-part CCNA. CCNA 640-801 can be taken in one sitting (by taking 640-801 exam) or in two sittings (by taking CCNA Intro and CCNA ICND separately).
5. CCNA Practice Tests 3.1.0 About CCNA - Cisco Certified Network Associate certification is awarded by Cisco(R) Systems on successful completion of CCNA (Exam code: 640-607) exam. CCNA is a foundation level certification offered by Cisco(R).
Users of Packet Tracer 3.2, 4.0 and 5.0 will note a variety of new features in Packet Tracer 5.2.
Protocol Improvements
Packet Tracer 5.2 models protocols not included in earlier versions. These protocols include models of IPv6 Routing, IPv6 and IPv4 Dual Stack, IPv6 ND, IPv6 Routing Protocols, DHCPv6, NATv6, Multi-Area OSPF, Redistribution, RSTP, SSH, Multilayer Switching, and EtherChannel. Also, a model of the Cisco Catalyst 3560-24PS Multilayer Switch has been added.
Extendable Architecture
Packet Tracer is designed in a modular fashion for future expansion and the Packet Tracer team is interested in learning what new features would be most useful to the community.
GUI Improvements
Packet Tracer 5.2 retains the logical topology as the primary workspace but adds additional physical representations of devices, Realtime and Simulation modes, and a wide variety of views and windows. The GUI supports multiple languages so the application may be locally translated. New features included in Packet Tracer 5.2 are the following: Multiuser, ACL Filters, user profile, improved print functuality, the ability to toggle toolbars in the main interface, Desktop tab for the Server including IP Configuration and Command Prompt dialogs, and various Activity Wizard improvements including additional locking items, the ability to import/export activity instructions, assign point values and component categories to assessment items, lock the user profile, toggle the Dynamic Percentage Feedback, and the ability to test an activity without restarting from beginning.
Representation and Visualization Tools
An Event List, a form of global network sniffer, is included in Packet Tracer 5.2. This allows the display of the majority of simulated PDUs as events. For detailed protocol analysis, these events may be played in a continuous animation mode, forward, backward or in a stepped through process. Powerful OSI Layer view and PDU view, and more sophisticated custom PDUs, are also supported.
This white paper provides best practices for managing large configurations using Navisphere Manager. It discusses performance issues one might encounter when managing large configurations, and provides recommendations for improving Navisphere Manager's performance with large configurations. This paper also includes an overview release 28. It also says about two primary keys to maximize the performance of a Navisphere Manager GUI session.
Enjoy The Downloading 
![HP Data Protector - [61:12500] cannot connect to inet for getting file system list on host](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgspn5NG8tEmjj5Xzbc0tmr2kIxxoQtKH3SvCGZFUWR7Sa7Q_hjKEMXJHSsw8T6ILflqVpQ68OrtdMn48o5feFi3b50lM3QNKJIYHVjqZ_ReWhIOTrFC_Rwc5FX2HZkr77DlKqbLK_2Kk4/s72-c/HP-Data_protector-backup-tool.png "HP Data Protector - [61:12500] cannot connect to inet for getting file system list on host")
