Answer:
a.the number of cycles per second
Explanation:
The frequency of a sine wave is defined as the number of cycles per second.
Frequency is the inverse of the time period. The frequency of a sine wave is given by 1/TimePeriod . It is generally expressed in units of Hertz(Hz) or sec^-1. Larger the time period, lower will be the frequency and vice versa. So for higher frequency waves we need to ensure that the time period is small.
Answer:
Placeholders
Explanation: Placeholders are boxes with dotted borders that hold content in its place on a slide layout. Slide layouts contain different types of placeholders (for example, for text, pictures, videos, and more). You can change a placeholder by resizing or repositioning it on a slide layout. You can also delete a placeholder.
Answer:
To make sure that data sent from a device is just received by appropriate device we use "<u>Switch</u>"
Explanation:
Switch is the networking device. It is used to connect all the Local area networks in a computer network. The switch store the addresses of all computers over the network. Whenever data packet arrives to the switch, it just read the address of destination computer and just send it to appropriate device instead of all devices.
Hub is also used for this purpose, but it has no ability to read the address and send the packet to all devices over the network.
<em>So, we use Switch to send data to appropriate device.</em>
