The SI unit for radioactivity, the becquerel (Bq), is named after him. Roentgen discovered X-rays on November 8, 1895. The press reported this on January 5, 1896, shortly before Becquerel did his famous experiment. Thus radioactivity was discovered the following year but within a year of the discovery of X-rays.
Book Details. Book Description. A penetration test, also known as pentest, is a method of assessing computer and network security by replicating an attack on a computer system or network from the outside world and internal threats. With the increase of advanced hackers and threats to our virtual world, pentesting is an absolute necessity.
A captive portal is a Web page that the user of a public-access network is obliged to view and interact with before access is granted. Captive portal s are typically used by business centers, airports, hotel lobbies, coffee shops, and other venues that offer free Wi-Fi hot spot s for Internet users. simple captive portal forces the user to at least look at (if not read) an acceptable use policy (AUP) page, and then click on a button indicating agreement to the terms of the policy.