Deck 2: Application Layer

Question 1

All three parts (request line,request header,request body)of an HTTP request from a web browser to a web server are required when a request is made.

Answer 1

False

Question 2

One major drawback to a client-server network lies in the fact that client-server networks enable software and hardware from different vendors to be used together.

Answer 2

False

Question 3

A cluster is a group of computers that are linked together so they act as a one computer.

Answer 3

True

Question 4

The four general functions of any application program are: data storage,data access logic,application logic and presentation logic.

Question 5

Middleware is the software that sits between the application software on the client and the application software on the server.

Question 6

In a client-server network,the presentation logic is the responsibility of the client computer.

Question 7

In the three-tier architecture,the software on the client computer is responsible for the presentation logic,an application server is responsible for the application logic and a separate database server is responsible for the data access logic and data storage.

Question 8

A "thin client" approach places most of the application logic on the client.

Question 9

Host-based and client-based networks are similar in that the client computer performs most of the work.

Question 10

The World Wide Web was conceived at University of Utah as part of the development of the Internet.

Question 11

The earliest data communications networks were client-server networks.

Question 12

A request header for an HTTP request starts with a command,such as GET,and ends with the HTTP version number that the browser understands.

Question 13

The standard protocol for communication between a Web browser and a Web server is the web protocol.

Question 14

As the demand for more and more network applications grow; host-based computing becomes the best solution.

Question 15

The two functions of middleware are to: 1)provide a standard way of communicating that can translate between software from different vendors,and 2)manage the message transfer between clients and servers so that clients do not need to 'know' which server contains the application's data.

Question 16

To use the Web,each client computer requires a data link layer software package called a Web browser.

Question 17

A network computer is designed primarily to communicate using Internet based standards,but has no hard disk.It has only limited functionality.

Question 18

The application architecture called the distributed computing model uses the "thick" client approach.

Question 19

Scalability refers to the ability to increase or decrease the capacity of the computing infrastructure in response to changing capacity needs.

Question 20

An application architecture is the way in which the functions of the application layer are performed solely by the clients in the network.

Question 21

The two-tier e-mail architecture does not require any application software on the client computer.

Question 22

________ is the presentation of information to the user and the acceptance of the user's commands.

A) data storage
B) data access logic
C) application logic
D) presentation logic
E) application access storage

Question 23

An application program function is __________,or the processing required to access data.

A) data storage
B) data access logic
C) application logic
D) presentation logic
E) application access storage

Question 24

The fundamental problem in client-based networks is that all data on the server must travel to the client for processing

Question 25

A(n)__________ is the way in which the functions of the application layer software are spread among the clients and servers in the network.

A) anonymous FTP
B) data access logic
C) fat client
D) application architecture
E) response status architecture

Question 26

One underlying problem with a host-based network is that:

A) there are economies of scale because all computer resources are centralized
B) the server can get overloaded since it must process all messages
C) the architecture is relatively simple and works well
D) the server is the one point of control which simplifies security
E) clients (terminals) do not require sophisticated hardware/software because they do not perform most of the work in this type of architecture

Question 27

______________,or the algorithms or business logic programmed into the application,can be simple or complex depending on the application.

A) data storage
B) data access logic
C) application logic
D) presentation logic
E) application access storage

Question 28

Which of the following is not the type of computer commonly used as a server:

A) personal computer
B) network computer
C) handheld
D) mainframe computer

Question 29

_________ is an application program function that deals with storing and retrieving data.

A) data storage
B) data access logic
C) application logic
D) presentation logic
E) application access storage

Question 30

Which of the following is not true a dumb terminal:

A) it has a monitor, keyboard and no CPU
B) all the processing takes place on the host computer.
C) it does not participate in the processing of the data it displays
D) you can install your latest application software on it.
E) it is basically an input/output device.

Question 31

A _____________ is the type of computer you use in your home and is the most common type of client today.

A) personal computer
B) mainframe
C) handheld
D) cluster
E) transaction terminal

Question 32

Which of the following is not a general function by any application program?

A) data storage
B) data access logic
C) application logic
D) presentation logic
E) application access storage

Question 33

A ________ is a group of computers linked together so that they act as one computer.

A) workstation
B) transaction terminal
C) cluster
D) network computer
E) transaction terminal

Question 34

A ________ is a very large general-purpose computer that is capable of performing very many functions as if these are done simultaneously,and storing extremely large amounts of data.

A) workstation
B) transaction terminal
C) cluster
D) mainframe
E) personal computer

Question 35

The Simple Mail Transfer Protocol is the least commonly used e-mail standard.

Question 36

Web-based e-mail like Hotmail is an example of three-tier client-server architecture that provides access to e-mail messages.

Question 37

A ________ is a group of computers linked together so that they act as one computer.

A) handheld
B) mainframe
C) network computer
D) cluster
E) transaction terminal

Question 38

With a client-based network,one fundamental problem is that:

A) the clients each must store all the data
B) the server does not have any data storage capability
C) the host or server must perform presentation logic, application logic, and data access logic at the same time
D) all data on the server must travel to the client for processing
E) the clients must perform the data storage logic

Question 39

With the two-tier client-server architecture,the client is responsible for the ________ logic and the server is responsible for the ________ logic.

A) Application; presentation
B) Presentation; data access
C) Data access; presentation
D) Application; data access
E) Presentation; application storage

Question 40

Using the POP standard for client to server e-mail communication,the e-mail messages remain on the server computer.

Question 41

With respect to costs for a client-server network,which of the following is true?

A) Personal computers used as clients in a client-server network cost about the same as mainframes for the same amount of computing power.
B) More network capacity, which costs more money, is required for client-server networks than for client-based networks.
C) Experts believe that client server architectures can be complex, but that developing application software for host based architectures is usually cheaper.
D) Updating the network with new version of software tends to be less expensive in a client-server network since the software is centralized in one client.
E) None of the above

Question 42

In a client-server network,_________ gets software from different vendors to work together.

A) a front-end processor
B) serverware
C) middleware
D) centerware
E) programmer

Question 43

The protocol that makes it possible for a Macintosh web browser to be able to retrieve a Web page from a Microsoft Web server is called _____________________.

A) Hypertext Transfer Protocol
B) File Transfer Protocol
C) Simple Mail Transfer Protocol
D) Internet Message Access Protocol
E) Hyperlink Transfer Protocol.

Question 44

A "thin client" architecture approach:

A) always is a two-tier network architecture
B) always is an n-tiered architecture
C) places all or almost all of the application logic on the client
D) places all or almost all of the application logic on the server
E) refers to the size of the cable connecting the clients to the network

Question 45

How are the application architecture functions split up in a client-server network?

A) the presentation logic and data storage are on the client, while the data access logic is on the server
B) the data storage, data access, and presentation logic are on the client
C) the presentation logic is on the client, while the data storage and data access logic are on the server
D) the data storage and data access logic are on the client, while the presentation logic are on the server
E) the presentation logic and data access logic are on the client, and the data storage is on the server

Question 46

To get a page from the Web,a user must type in a URL,which stands for:

A) Unknown Resource Locator
B) Unknown Router Location
C) Uniform Router Location
D) Uniform Resource Locator
E) Uniform Resource Library

Question 47

Marc Andreessen led a team that developed the first graphical Web browser,which was called:

A) Internet Explorer
B) Mosaic
C) Firebird
D) Netscape Navigator
E) Mozilla

Question 48

To interact with the World Wide Web,a client computer needs an application layer software package called a:

A) Web browser
B) Web server
C) Telnet package
D) Uniform Resource Locator package
E) Router package

Question 49

In the three tier architecture the software on the client computer is responsible for____________.

A) presentation logic
B) application logic
C) data access logic
D) data storage
E) application storage

Question 50

There are required and optional parts of an HTTP response.They are:

A) response status, response header, response body
B) response address, response header, response body
C) response status, response body
D) response address, response header
E) response status, response header

Question 51

There are optional and required parts of an HTTP request.They are:

A) request address, request body
B) request address, request header, request body
C) request line, request header
D) request line, request body
E) request line, request header, request body

Question 52

With the "thin client" architecture,when an application changes,only the _________ with the application logic needs to be updated.

A) client
B) server
C) middleware
D) hardware
E) software

Question 53

A(n)_________-tiered architecture uses only two sets of computers:one set of clients and one set of servers.

A) one
B) two
C) three
D) five
E) n

Question 54

____________ is not an important middleware standard.

A) CORBA (Common Object Request Broker Architecture
B) Distributed Computed Environment (DCE)
C) Asynchronous Transfer Mode (ATM)
D) Open Database Connectivity (ODBC)
E) none of the above is an appropriate answer

Question 55

Each server on a network that needs to act as a web server needs an application layer software package called a (n)______________.

A) browser
B) application web
C) web server
D) operating system
E) none of the above

Question 56

Client-server architectures:

A) cannot connect computers that use different hardware
B) are one of the least used network architectures today
C) can use middleware to provide a standard way of communicating between software from more than one vendor
D) assign the responsibility for the presentation logic to the server
E) were the earliest type of network architectures

Question 57

A "thick client" architecture approach:

A) always is a two-tier network architecture
B) always is an n-tiered architecture
C) places all or almost all of the application logic on the client
D) places all or almost all of the application logic on the server
E) refers to the size of the cable connecting the clients to the network

Question 58

One disadvantage of the ____________ architecture is that places a greater load on the network.

A) two-tier
B) three tier
C) one-tier
D) n-tier
E) layered

Question 59

An N-tiered architecture:

A) is generally more "scalable" than a three-tiered architecture
B) is generally less "scalable" than a three-tiered architecture
C) uses only two sets of computers in which the clients are responsible for the application and presentation logic, and the servers are responsible for the data
D) uses exactly three sets of computers in which the client is responsible for presentation, one set of servers is responsible for data access logic and data storage, and application logic is spread across two or more different sets of servers
E) puts less load on a network than a two-tiered architecture because there tends to be less communication among the servers

Question 60

The idea for a special hypertext network,called the World Wide Web,was conceived of by:

A) Microsoft in 1994 as part of the Windows 95 project
B) Tim Berners-Lee at the European Laboratory for Particle Physics (CERN) in 1989
C) Vinton Cerf, for the U.S. Department of Defense in 1969 as a network of four computers called ARPANET
D) Howard Flieshman of IBM in 1982 as part of the development of the IBM PC
E) the University of Minnesota as an extension of Gopher

Question 61

The acronym,MIME,refers to:

A) Multimedia Internet Mail Enterprise
B) Multiple Internet Media Extension
C) Multipurpose Internet Mail Extension
D) Media Internet Mail Extension
E) Multimedia Internet Mime Extension

Question 62

In a host-based system with a mainframe,upgrades to the host are _____________.

A) Small
B) Cheap
C) Lumpy
D) Never going to happen
E) Always performed annually

Question 63

What do the following tools enable you to do: the Web,email,Telnet,IM?

Question 64

_________ is a special type of one directional; videoconferencing in which content is sent from the server to the user.

A) broadcasting
B) instant messaging
C) webcasting
D) H.323
E) Net Meeting.

Question 65

Another term for a user agent is:

A) message transfer agent
B) router agent
C) e-mail client
D) Webcast package
E) Web client

Question 66

A response status code of 404 means:

A) the requested page was not found
B) the server is currently unavailable
C) the sever is currently busy
D) your browser is incompatible with the Web server software.
E) your browser needs to be updated to the latest version.

Question 67

Which of the following is not a user agent package?

A) Outlook Express
B) Microsoft Word
C) Fedora
D) Netscape Messenger
E) Microsoft Outlook

Question 68

In a two-tier client-server architecture,a client computer needs to use an application layer software package called a ________________ to send e-mail:

A) message transfer agent
B) router agent
C) user agent
D) Webcast package
E) gateway agent

Question 69

In a ___________ architecture,computers are both client and server,thus sharing the work.

A) Host-based
B) Client-based
C) Client-server
D) Peer-to-peer
E) Network

Question 70

The acronym,HTML,refers to:

A) Header Markup Language
B) Hypertext Markup Locator
C) Hypertext Markup Language
D) Hypertext Markup Library
E) Hypertext Modulating Language

Question 71

The standards H.320,H.323,and MPEG-2 are commonly used with

A) Telnet
B) Videoconferencing
C) Email
D) IM
E) Microsoft Office

Question 72

With a _____________,one computer acts as several servers.

A) Mainframe
B) Virtual server
C) Terminal
D) Network computer
E) Transaction terminal

Question 73

The fastest growing form of videoconferencing is

A) mainframe
B) Outlook
C) Telnet
D) webcasting
E) desktop

Question 74

The most commonly used e-mail standard is:

A) Simple Mail Transfer Protocol
B) X.400
C) CMC
D) Post Office Protocol
E) Telnet

Question 75

IMAP (Internet Message Access Protocol):

A) is a set of standards that define how email is to be processed between mail servers
B) is exactly the same as SMTP
C) copies an e-mail message from the client computer's hard disk, deletes it from the client, and stores it on the mail server
D) is exactly the same as POP
E) permits an e-mail message to remain stored on the mail server even after they have been read by a client computer

Question 76

One of the most frequently used Telnet applications is

A) WS-FTP
B) PuTTY
C) Outlook
D) Word

Question 77

Which of the following is not true about Telnet?

A) Telnet requires an application layer program on the client computer and an application layer program on the server or host computer.
B) Telnet poses no security threat.
C) Telnet was designed in the early days of the Internet.
D) You are using a host-based architecture with Telnet.
E) One program that conforms to the Telnet standard is EWAN.

Question 78

Describe the history of the Internet and the Web (part of this is in Chapter 1,part in Chapter 2).Where do you forsee the future evolution of the Internet heading,and why?

Question 79

The software that runs on the mail server is referred to as the____________

A) Mail transfer agent
B) Mail user agent
C) Microsoft Outlook
D) Web server
E) SMTP

Question 80

Which of the following is not an advantage of instant messaging?

A) It usually takes days for an IM message to be delivered to the recipient.
B) It allows real time typed messages to be exchanged.
C) Some products are ICQ and AOL Instant Messenger.
D) It is generally faster than snail-mail.
E) It helps people avoid telephone tag.