D) both a and b
Microwaves are used to heat foods in ovens. We all know that. They are also used for data and information transfer. Microwaves are used in wifi, gps, and radio astronomy.
<span>So if some access your computer and erased some data without your permission or knowing then this threat is called as security threat. So you should have these stand alone systems with username and password concept that would protect your sensitive and private data and have the control over your computer.</span>
Cal command is a calendar command in Linux which is used to see the calendar of a specific month or a whole year and enter a command, using output redirection (>), to output of the date command to a file called todaysdate.
<h3>What is cal command?</h3>
cal is a command- line utility on a number of computer operating system which includes Unix, Plan 9, Inferno and Unix - like operating system such as Linux that prints an ASCII calendar of the given month or year.
cal command is generally stands for calendar and the function of cal command is to display a simple calendar. The example of cal command is cal sep 1752.
Therefore, Cal command is a calendar command in Linux which is used to see the calendar of a specific month or a whole year and enter a command, using output redirection (>), to output of the date command to a file called todaysdate.
Learn more about cal command here:
brainly.com/question/22970860
#SPJ4
Answer:
The answer is "Category 5 cable".
Explanation:
It is also known as Cat 5 or class 5, but many of us consider it just "Ethernet wire". It was established in the early 1990s, which was included by the Electronics Industry group and the Telecom industry Association. It uses a twisted pair cable, which is used for carrying signals.
- It supports up to 100 MHz capacity and can be used for 10Base-T, 100Base-TX, or perhaps 1000Base-T Gigabit.
- It is the right solution for four twisted pairs of copper cable that attached to the RJ-45 connector.
