Write a Code Fragment That Connects to a Server Running

question 51

Multiple Choice

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.

• A) Socket sock = new Socket(gorge.divms.uiowa.edu, 2345);
• Scanner scan = new Scanner(sock.getOutputStream());
• String line = scan.nextLine();
• B) Socket sock = new Socket(gorge.divms.uiowa.edu, 2345);
• Scanner scan = new Scanner(sock.getInputStream());
• String line = scan.nextLine();
• C) Scanner scan = new Scanner(sock.getInputStream());
• Socket sock = new Socket(gorge.divms.uiowa.edu, 2345);
• String line = scan.nextLine();
• D) Socket sock = new Socket(2345, gorge.divms.uiowa.edu);
• Scanner scan = new Scanner(sock.getInputStream());
• String line = scan.next();

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Definitions:

Confidence Interval

A range of number sets, derived from statistical analyses of samples, assumed to hold the invisible value of a population characteristic.

Margin of Error

An expression of the range within which the true value of a statistic is expected to fall, based on sample observations.

Standard Error

A measure of how much sample means of a given data set are expected to vary, serving as a statistical indicator of precision.

Margin of Error

A measure of the range of values below and above the sample statistic in a confidence interval; it quantifies uncertainty in estimates.