Answer:
Stellar Spectra Classification The patterns of lines detected in stellar spectra are used by astronomers to classify stars into spectral classes. These spectral classes are a measure of a star's surface temperature since the temperature of a star dictates which absorption lines are present in its spectrum.
Explanation:
The answer for this would be B!!
Answer:
Personal mode or Pre-Shared key mode.
Explanation:
Personal mode is good for mostly for smaller networks like home networks. An encryption passphrase is defined on the wireless router and other APs ( access points) After that the passphrase is entered by the users in order to connect with the wifi. This mode is not good for business networks.