Suppose That Sock Refers to a TCP Socket Connected to Another

question 4

Multiple Choice

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?

• A) PrintWriter pw = new PrintWriter(sock.getOutputStream().println("Who is there?"));
• InputStream instream = sock.getInputStream();
• Scanner in = new Scanner(instream);
• System.out.println(in.nextLine());
• B) PrintWriter pw = new PrintWriter(sock.getInputStream());
• pw.println("Who is there?");
• pw.flush();
• InputStream instream = sock.getInputStream();
• Scanner in = new Scanner(instream);
• System.out.println(in.nextLine());
• C) PrintWriter pw = new PrintWriter(sock.getOutputStream());
• pw.flush("Who is there");
• InputStream instream = sock.getInputStream();
• Scanner in = new Scanner(instream);
• System.out.println(in.nextLine());
• D) PrintWriter pw = new PrintWriter(sock.getOutputStream());
• pw.println("Who is there?");
• pw.flush();
• InputStream instream = sock.getInputStream();
• Scanner in = new Scanner(instream);
• System.out.println(in.nextLine());

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Definitions:

Complaint

An expression of dissatisfaction or a formal accusation against a party, product, or service.

Profit Maximization

The process by which a firm determines the price and output level that returns the greatest profit, considering the cost and demand functions.

Human Capital

The grouped skillset, awareness, or subtle properties of individuals that can be utilized to create financial benefits for the individuals, the organizations they work for, or their local communities.

Discriminated

Treated unfairly or prejudicially against an individual or group based on characteristics such as race, age, sex, or religion.