A null session is an anonymous login to a network that allows users to view available resources. It can give hackers access to computers and confidential data, making it a security threat. Disabling null sessions can be done with the help of IT staff. A null session is a login to a network using an […]
A null modem is a cable or adapter that allows communication between two serial devices without a modem. It is used for debugging operating systems and accessing devices without a built-in console. A crossover cable is a type of null modem where serial data lines are crossed within the cable. Hardware handshake signals can also […]
The null character, with a zero value, is used to indicate empty, undefined or uninitialized variables, classes or pointers. It was originally used to communicate with peripheral hardware and is now used to save memory space and initialize new variables. A null character in computer programming is a character with a zero value. It is […]
A null marriage is not recognized by law and does not require special steps to separate. It can be voided if it violates laws such as same-sex or closely related marriages. A voidable marriage can be challenged and annulled by the court, but can be legalized if the spouses take steps to do so. A […]
Scientists use hypotheses to explain observations and make predictions that can be tested through experimentation. The null hypothesis is the belief that there will be no effect, and alternative hypotheses are contradictory possibilities. A good hypothesis is simple, explains all aspects of the observation, and can be tested. The null hypothesis is rejected if there […]
