Exam 23: Internet Networking

What are among the most important pieces of information that must be included in an IP packet? I. The Internet address of the recipient II. The URL of the recipient III. The Internet address of the sender IV. The port number of the sender

The HTTP command POST ____________.

Suppose that sock refers to a TCP socket connected to another machine, and in is aScanner.Which code sends the string "Who is there?" to the other machine, receives the return answer, and then prints it?

Which code fragment creates a server running at port 6666 and sends one line of text, "Hello from earth" over and over to any machine that connects to the server?

To close a connection, which of the following statements can you use?

The following command: java pgmName hostname / lets you retrieve any item from a web server.The slash means:

IP breaks up large chunks of data into more manageable ____________________.

The HTTP response code 200 means _______________.

Which of the following HTTP commands supplies input to a server-side command and returns the result?

Write a code fragment that connects to a server running on gorge.divms.uiowa.edu at port 2345 and reads one line of text sent by the server.

Which of the following is false about packets?

Which of the following protocols is used to send email messages?

_________ objects are used for communication (IO) between two computers (client and server).

The HTTP command HEAD ____________.

A thread dies ______________

Two kinds of data are transmitted between computers: ______________ refers to the data that one computer actually wants to send to another.Network protocol data are the data that describe how to reach the intended recipient and how to check for errors and data loss in the transmission.

The ____________ has one function, to attempt to deliver data from one computer to another across the Internet.

The HTTP command OPTIONS ____________.

The HTTP command TRACE ____________.

Suppose you use the URLGet program in Section 23.5 to get a web page that does not exist on a server (which does exist).Assuming that the server is otherwise working properly, what will happen?