Question 1

The HTTP command DELETE ____________.

Accepted Answer

A)  deletes two items, an item on the server and an item from the client. 
B)  deletes an item from the client. 
C)  deletes an item on the server. 
D)  deletes input from a client-side command. 
A)  deletes two items, an item on the server and an item from the client. 
B)  deletes an item from the client. 
C)  deletes an item on the server. 
D)  deletes input from a client-side command.

Question 2

If a computer wants to request information from gateway.com, it must first ask a(n) ____ server to translate the domain name into a numeric Internet address.

Accepted Answer

A)  DNS 
B)  socket 
C)  URL 
D)  IP 
A)  DNS 
B)  socket 
C)  URL 
D)  IP

Question 3

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

Accepted Answer

A)  URL u = new URL("http://www.yahoo.com");
URLConnection conn = u.open(); 
B)  URL u = new URL("http://www.yahoo.com");
URLConnection conn = new URLConnection(u); 
C)  URL u = new URL("http://www.yahoo.com");
URLConnection conn = u.openURLConnection(); 
D)  URL u = new URL("http://www.yahoo.com");
URLConnection conn = u.openConnection(); 
A)  URL u = new URL("http://www.yahoo.com");
URLConnection conn = u.open(); 
B)  URL u = new URL("http://www.yahoo.com");
URLConnection conn = new URLConnection(u); 
C)  URL u = new URL("http://www.yahoo.com");
URLConnection conn = u.openURLConnection(); 
D)  URL u = new URL("http://www.yahoo.com");
URLConnection conn = u.openConnection();

Question 4

If your data gets lost or garbled during transmission from one computer to another, what is responsible for ensuring that the recipient is aware of the unfortunate fact and does not rely on incomplete data?

Accepted Answer

A)  TCP 
B)  IP 
C)  HTTP 
D)  DNS 
A)  TCP 
B)  IP 
C)  HTTP 
D)  DNS

Question 5

What does TCP/IP stand for?

Accepted Answer

A)  Transmission Control and Internet Protocol. 
B)  Transmission Control Protocol and Internet Protocol. 
C)  Transmission Protocol and Internet Protocol. 
D)  Transmission Control Protocol over Internet Protocol. 
A)  Transmission Control and Internet Protocol. 
B)  Transmission Control Protocol and Internet Protocol. 
C)  Transmission Protocol and Internet Protocol. 
D)  Transmission Control Protocol over Internet Protocol.

Question 6

When you communicate with a web server to obtain data, you have two choices:
I. You can make a socket connection and send GET and POST commands.
II. You can make a server connection and send GET and POST commands.
III. You can use the URLConnection class and have it issue the commands on your behalf.
IV. You can use the URL class and have it issue the commands on your behalf.

Accepted Answer

A)  I and II. 
B)  II and III. 
C)  III and I. 
D)  IV and II. 
A)  I and II. 
B)  II and III. 
C)  III and I. 
D)  IV and II.

Question 7

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

Accepted Answer

A)  ServerSocket 
B)  Socket 
C)  ClientSocket 
D)  Packet 
A)  ServerSocket 
B)  Socket 
C)  ClientSocket 
D)  Packet

Question 8

Sending commands over a socket connection is ___________.

Accepted Answer

A)  a high-level approach. 
B)  a medium-level approach. 
C)  a low-level approach. 
D)  a complex approach. 
A)  a high-level approach. 
B)  a medium-level approach. 
C)  a low-level approach. 
D)  a complex approach.

Question 9

What are the steps involved in designing a client/server application?
I. Design a communication protocol.
II. Test the server with the Telnet program.
III. Implement the server program.
IV. Write a client program.

Accepted Answer

A)  I 
B)  I and II 
C)  I, II, and III 
D)  I, II, III, and IV 
A)  I 
B)  I and II 
C)  I, II, and III 
D)  I, II, III, and IV

Question 10

What does the acronym SMTP stand for?

Accepted Answer

A)  Simple Mail Transfer Protocol 
B)  Small Mail Transport Protocol 
C)  Simple Mail Transport Protocol 
D)  Small Mail Transfer Protocol 
A)  Simple Mail Transfer Protocol 
B)  Small Mail Transport Protocol 
C)  Simple Mail Transport Protocol 
D)  Small Mail Transfer Protocol

Question 11

____ has built-in provisions for retrying incomplete transmissions.

Accepted Answer

A)  TCP 
B)  IP 
C)  DNS 
D)  HTTP 
A)  TCP 
B)  IP 
C)  DNS 
D)  HTTP

Question 12

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

Accepted Answer

A)  I, III, and IV 
B)  I, II, and III 
C)  II, III, and IV 
D)  I, II, III, and IV 
A)  I, III, and IV 
B)  I, II, and III 
C)  II, III, and IV 
D)  I, II, III, and IV

Question 13

Suppose you use the URLGet program in Section 22.5 to get a web page from a server that does not exist, such as http://wombat.java/index.html. What will happen?

Accepted Answer

A)  The call to the URL constructor will throw an exception. 
B)  The call to getResponseCode will throw an exception. 
C)  The call to getResponseCode will return the error code 404. 
D)  The call to getInputStream will throw an exception. 
A)  The call to the URL constructor will throw an exception. 
B)  The call to getResponseCode will throw an exception. 
C)  The call to getResponseCode will return the error code 404. 
D)  The call to getInputStream will throw an exception.

Question 14

A(n) ____ describes how data for a particular application is transmitted.

Accepted Answer

A)  URL 
B)  application protocol 
C)  socket 
D)  IP address 
A)  URL 
B)  application protocol 
C)  socket 
D)  IP address

Question 15

The HTTP command OPTIONS ____________.

Accepted Answer

A)  requests the item's communication options. 
B)  returns the item's options from the client. 
C)  returns the item's option on the server. 
D)  changes the options of the item. 
A)  requests the item's communication options. 
B)  returns the item's options from the client. 
C)  returns the item's option on the server. 
D)  changes the options of the item.

Question 16

You should use a ______ to connect to a web server.

Accepted Answer

A)  Packet 
B)  Socket 
C)  URLConnection 
D)  HttpURLConnection 
A)  Packet 
B)  Socket 
C)  URLConnection 
D)  HttpURLConnection

Question 17

Suppose you use the URLGet program in Section 22.5 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?

Accepted Answer

A)  The call to openConnection will throw an exception. 
B)  The call to getResponseCode will return the error code 404. 
C)  The call to getResponseMessage will return null. 
D)  The call to getInputStream will throw an exception. 
A)  The call to openConnection will throw an exception. 
B)  The call to getResponseCode will return the error code 404. 
C)  The call to getResponseMessage will return null. 
D)  The call to getInputStream will throw an exception.

Question 18

The HTTP response code 200 means _______________.

Accepted Answer

A)  the response is successful. 
B)  the page is found successfully. 
C)  the page was not found. 
D)  the connection is lost. 
A)  the response is successful. 
B)  the page is found successfully. 
C)  the page was not found. 
D)  the connection is lost.

Question 19

When you communicate with a mail server, you ___________, or you can learn how to use Java mail extensions.

Accepted Answer

A)  can write programs that send GET and POP commands. 
B)  can write programs that send SMTP and POST commands. 
C)  can write programs that send GET and POST commands 
D)  can write programs that send SMTP and POP commands. 
A)  can write programs that send GET and POP commands. 
B)  can write programs that send SMTP and POST commands. 
C)  can write programs that send GET and POST commands 
D)  can write programs that send SMTP and POP commands.

Question 20

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

Accepted Answer

A)  the port of the hostname. 
B)  the root page of the web server. 
C)  the character to end the command. 
D)  the item name needs to be retrieved. 
A)  the port of the hostname. 
B)  the root page of the web server. 
C)  the character to end the command. 
D)  the item name needs to be retrieved.

Exam 22: Internet Networking

The HTTP command DELETE ____________.

If a computer wants to request information from gateway.com, it must first ask a(n) ____ server to translate the domain name into a numeric Internet address.

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

If your data gets lost or garbled during transmission from one computer to another, what is responsible for ensuring that the recipient is aware of the unfortunate fact and does not rely on incomplete data?

What does TCP/IP stand for?

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

Sending commands over a socket connection is ___________.

What are the steps involved in designing a client/server application? I. Design a communication protocol. II. Test the server with the Telnet program. III. Implement the server program. IV. Write a client program.

What does the acronym SMTP stand for?

____ has built-in provisions for retrying incomplete transmissions.

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

Suppose you use the URLGet program in Section 22.5 to get a web page from a server that does not exist, such as http://wombat.java/index.html. What will happen?

A(n) ____ describes how data for a particular application is transmitted.

The HTTP command OPTIONS ____________.

You should use a ______ to connect to a web server.

Suppose you use the URLGet program in Section 22.5 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?

The HTTP response code 200 means _______________.

When you communicate with a mail server, you ___________, or you can learn how to use Java mail extensions.

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

Introduction

Using Objects

Implementing Classes

Fundamental Data Types

Decisions

Loops

Arrays and Array Lists

Designing Classes

Inheritance

Interfaces

Inputoutput and Exception Handling

Object-Oriented Design

Recursion

Sorting and Searching

The Java Collections Framework

Basic Data Structures

Tree Structures

Generic Classes

Graphical User Interfaces

Streams and Binary Inputoutput

Multithreading

Relational Databases

XML

Web Applications

Filters