It is considered good security practice to treat cryptographic keys with a healthy level of respect. The conventional wisdom appears to be that the more material you sign with a given private key the more clues you are leaving behind that could enable some form of effective key guessing. As RFC4641 states: “the longer a [...]

Are you ready for the exam? Test yourself.

A personal computer can be a laptop, desktop, palmtop or a tablet computer but, what they all have in common is that they are operated by individual end-users. A personal computer has the capabilities to undertake word processing and spreadsheets amongst a host of other functions, depending on the operating system and the software that has been included – either as an integral function, or which has been uploaded to the computer at a later stage. When it comes to internet facilities, personal computers are able to operate email clients, and Web browsers giving access to the World Wide Web and the innumerable resources available while online.

As all of us Cisco certified and future Cisco certified professionals know, the key to passing the CCNA is knowing your hands on configuration like the back of your hand. This presents a challenge to many of us who’s budget is limited from buying the latest and greatest Cisco equipment that could cost anywhere from hundreds to thousands of dollars to create a decent lab!