Question 1

The late 1960s and early 1970s saw the rise of networked systems.

Accepted Answer

A) True 
 B)False

Question 2

Assuming that a socket has been created with a name of server, what effect does the server.listen(10)  have?

Accepted Answer

A)   The socket will listen for a maximum of 10 minutes, and then close.
B)   The socket will allow a maximum of 10 connections, then close.
C)   The socket will accept a maximum of 10 concurrent connections.
D)   The socket will listen until the integer "10" is seen in the data stream.E) A) and C)
F) B) and C)

Question 3

A thread object can die if it raises an exception that is not handled.

Accepted Answer

A) True 
 B)False

Question 4

In the event that a thread loses access to the CPU, such as via a time-out, sleep, block, or wait state, what happens when the thread is ready to resume execution?

Accepted Answer

A)   The thread is moved to the front of the ready-queue.
B)   The thread is moved to the rear of the ready-queue.
C)   The thread is given a chance to execute as soon as the running process enters a wait state.
D)   The thread is given a random interval to check if it is the thread's turn to execute, or if the processor is available.E) A) and D)
F) B) and C)

Question 5

What statement accurately describes the role of a socket?

Accepted Answer

A)   A socket is an object that serves as a communication link between a single server process and a single client process.
B)   A socket is a named pipe that is used to pass communications one way to a remote location.
C)   A socket is a unique computer resource that provides access to hardware.
D)   A socket is a communications channel within the TCP/IP stack that communicates only with the localhost.E) C) and D)
F) B) and D)

Question 6

You are designing a script that needs to get the current date and time as a string. What function can you use for this?

Accepted Answer

A)   time.ptime
B)   time.ctime
C)   time.today
D)   time.nowE) B) and C)
F) A) and B)

Question 7

Time-sharing systems are still in widespread use in the form of Web servers, e-mail servers, print servers, and other kinds of servers on networked systems.

Accepted Answer

A) True 
 B)False

Question 8

Few modern computers use threads to represent processes.

Accepted Answer

A) True 
 B)False

Question 9

What two items must be passed in a tuple to the socket module's connect method in order to connect a socket? (Choose two.)

Accepted Answer

A)   The target host's IP address.
B)   The protocol type that will be used.
C)   The operating system used by the host.
D)   A valid port number.E) All of the above
F) B) and D)

Question 10

Clients connect to servers via objects known as channels.

Accepted Answer

A) True 
 B)False

Question 11

What kind of problem occurs in a producer/consumer relationship in which the consumer attempts to access data that are not there, or accesses the same data more than once?

Accepted Answer

A)   procedural problems
B)   communication problems
C)   coordination problems
D)   synchronization problemsE) None of the above
F) A) and C)

Question 12

The process of saving or restoring a thread's state is called a scheduling switch.

Accepted Answer

A) True 
 B)False

Question 13

The discipline of building hardware architectures, operating systems, and specialized algorithms for running a program on a cluster of processors is known by what term?

Accepted Answer

A)   multi-computing
B)   resource sharing
C)   process distributing
D)   parallel computingE) All of the above
F) B) and D)

Question 14

You have just captured data using the socket.recv method into a variable named client_data. What can you use to convert client_data to a string?

Accepted Answer

A)   codecs.decode(client_data, "string") 
B)   socket.decode(client_data, type="string") 
C)   codecs.decode(client_data, 'ascii') 
D)   network.data(client_data, %s) E) None of the above
F) All of the above

Question 15

When working with sockets, it is important to synchronize the sending and the receiving of messages between the client and the server.

Accepted Answer

A) True 
 B)False

Question 16

A port serves as a channel through which several clients can exchange data with the same server or with different servers.

Accepted Answer

A) True 
 B)False

Question 17

What two Python data structures are already thread-safe, because they provide automatic support for synchronizing multiple readers and writers? (Choose two.)

Accepted Answer

A)   tuples
B)   strings
C)   lists
D)   dictionariesE) A) and D)
F) C) and D)

Question 18

What is the purpose of a condition object in a threaded application?

Accepted Answer

A)   The condition object functions as a lock on a resource.
B)   The condition object provides a similar function to if-else in threads.
C)   The condition object provides a try-except function in threads.
D)   The condition object functions as a timer for the ready-queue.E) A) and C)
F) A) and B)

Question 19

When a thread's run method has executed its last instruction, the thread dies as a process but continues to exist as an object.

Accepted Answer

A) True 
 B)False

Question 20

A socket is bound to an address (host, port) by running its bind method.

Accepted Answer

A) True 
 B)False

Exam 10: Multithreading Networks and Client Server Programming

The discipline of building hardware architectures, operating systems, and specialized algorithms for running a program on a cluster of processors is known by what term?

Correct AnswerverifiedShow Answer

What two Python data structures are already thread-safe, because they provide automatic support for synchronizing multiple readers and writers? (Choose two.)

Correct AnswerverifiedShow Answer

The process of saving or restoring a thread's state is called a scheduling switch.

Correct AnswerverifiedShow Answer

What statement accurately describes the role of a socket?

Correct AnswerverifiedShow Answer

A thread object can die if it raises an exception that is not handled.

Correct AnswerverifiedShow Answer

In the event that a thread loses access to the CPU, such as via a time-out, sleep, block, or wait state, what happens when the thread is ready to resume execution?

Correct AnswerverifiedShow Answer

Assuming that a socket has been created with a name of server, what effect does the server.listen(10) have?

Correct AnswerverifiedShow Answer

What is the purpose of a condition object in a threaded application?

Correct AnswerverifiedShow Answer

A port serves as a channel through which several clients can exchange data with the same server or with different servers.

Correct AnswerverifiedShow Answer

Clients connect to servers via objects known as channels.

Correct AnswerverifiedShow Answer

The late 1960s and early 1970s saw the rise of networked systems.

Correct AnswerverifiedShow Answer

When a thread's run method has executed its last instruction, the thread dies as a process but continues to exist as an object.

Correct AnswerverifiedShow Answer

When working with sockets, it is important to synchronize the sending and the receiving of messages between the client and the server.

Correct AnswerverifiedShow Answer

What kind of problem occurs in a producer/consumer relationship in which the consumer attempts to access data that are not there, or accesses the same data more than once?

Correct AnswerverifiedShow Answer

Few modern computers use threads to represent processes.

Correct AnswerverifiedShow Answer

You have just captured data using the socket.recv method into a variable named client_data. What can you use to convert client_data to a string?

Correct AnswerverifiedShow Answer

You are designing a script that needs to get the current date and time as a string. What function can you use for this?

Correct AnswerverifiedShow Answer

Time-sharing systems are still in widespread use in the form of Web servers, e-mail servers, print servers, and other kinds of servers on networked systems.

Correct AnswerverifiedShow Answer

A socket is bound to an address (host, port) by running its bind method.

Correct AnswerverifiedShow Answer

What two items must be passed in a tuple to the socket module's connect method in order to connect a socket? (Choose two.)

Correct AnswerverifiedShow Answer

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