What is data communications??
What will be an ideal response?
We will define data communications as the transfer of digital or analog data using digital or analog signals. Once created, these analog and digital signals then are transmitted over conducted media or wireless media. Both the data and the signal can be analog or digital, allowing for four possible combinations. Transmitting analog data by analog signals and digital data by digital signals are fairly straightforward processes- he conversion from one form to another is relatively simple. Transmitting digital data using analog signals, however, requires the digital data to be modulated onto an analog signal, which is what happens with a modem and the telephone system. Transmitting analog data using digital signals requires the data to be sampled at specific intervals and then digitized into a digital signal, which is what happens with a device called a digitizer, or codec.?
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You can open and close panels using the ____ menu.
A. View B. Window C. Panel D. Workspace
Which of the following is NOT true when changing the data type in an existing field?
A) You can change the size of a field in Datasheet view and Design view. B) If you decide that a field length needs to be longer, you can change the field without concern. C) If you make a field length shorter and there were data that needed the longer length, you may truncate those values. D) Access will always warn you that data may be lost if you change the length to a smaller size.
A placeholder is a grid of columns and rows that organizes data
Indicate whether the statement is true or false
What command will list only current connections, including IP addresses and port numbers?
a. show ip stats b. netstat -n c. netstat -s d. portstat