Describe communications at the application level - give an example.
What will be an ideal response?
Each client and server application installed on a computer listens at a predetermined address that uniquely identifies the application on the computer. This address is a number and is called a port number, port, or port address. For example, you can address a web server by entering into a browser address box an IP address followed by a colon and then 80, which is the port number for a web server application. Suppose a computer with an IP address of 136.60.30.5 is running both an email server, which listens at port 25, and a web server application listening at port 80. If a client computer sends a request to 136.60.30.5:25, the email server that is listening at that port responds. On the other hand, if a request is sent to 136.60.30.5:80, the web server listening at port 80 responds
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In the figure above, which of the following software is being used?
A. Windows Media Player B. Apple iTunes C. Apple iRip D. Windows Music Player
Oracle database consists of logical and physical database structures. Describe each of the following concepts and state to which structure they belong:
(a) Schema; (b) Data block; (c) Redo log file.
A ____ image is one that appears behind the content of a Web page.
A. hidden B. transparent C. background D. foreground
Clicking the Track Changes button on the Data tab will open the Highlight Changes dialog box.
Answer the following statement true (T) or false (F)