Describe how RF waves are transmitted and received by an antenna.
What will be an ideal response?
RF waves are transmitted and received by an antenna. One end of the antenna points into the air and the other end is fixed to the ground directly or via a grounded device. Antennas are generally made of copper wire or another conductive medium; radio waves that strike the wire during transmission or reception cause electrical pressure (voltage) on the wire. The voltage forces the wire to oscillate at the same frequency as the radio waves striking the wire
or being emitted. Therefore, RF waves are broadcast by applying an electrical current to the antenna, causing the antenna's wire to oscillate at the same frequency as the radio signal.
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Which statement is false?
a. When a List is backed by an array, any modifications made through the List view change the array. b. When a List is backed by an array, any modifications made to the array change the List view. c. The only operation permitted on the view returned by Arrays method asList is delete, which deletes the value from the view and the backing array. d. Adding elements to the view returned by Arrays method asList results in an UnsupportedOperationException.
Desktop and laptop computers use ________, such as those that come with Microsoft Office, for creating and editing documents
Fill in the blank(s) with correct word
The Access Save As option to back up a database
a. Back UpDatabase b. Save c. Save as Template
A string variable can hold digits such as account numbers and zip codes.
Answer the following statement true (T) or false (F)