Intro to Data communications hw quiz ch 2

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

c) middleware

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 the _____________________. a) Hypertext Transfer Protocol b) File Transfer Protocol c) Simple Mail Transfer Protocol d) Internet Message Access Protocol e) Hyperlink Transfer Protocol.

a) Hypertext Transfer Protocol

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

a) Mail transfer agent

The most commonly used e-mail standard is: a) Simple Mail Transfer Protocol b) X.400 c) CMC d) Post Office Protocol e) Telnet

a) Simple Mail Transfer Protocol

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

a) Web browser

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

a) is generally more "scalable" than a three-tiered architecture

In the three tier architecture, the software on the client computer is responsible for the ____________. a) presentation logic b) application logic c) data access logic d) data storage e) application storage

a) presentation logic

The ________________ cloud deployment model provides the highest levels of control, privacy and security. a) private b) public c) community d) hybrid

a) private

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.

a) the requested page was not found

Which of the following is not an example of a mail user agent software package? a) Outlook Express b) Microsoft Word c) Eudora d) Microsoft Outlook e) All of these are mail user agent packages

b) Microsoft Word

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) Keystrokes are sent over the network in clear text. e) One program that conforms to the Telnet standard is PuTTY.

b) Telnet poses no security threat.

The standards H.320, H.323, and MPEG-2 are commonly used with a) Telnet b) Videoconferencing c) Email d) IM e) Microsoft Office

b) Videoconferencing

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

b) server

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

b) the server can get overloaded since it must process all messages

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) mail user agent d) Webcast package e) gateway agent

c) mail user agent

____________ 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

c) Asynchronous Transfer Mode (ATM)

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

c) Hypertext Markup Language

______________, 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

c) application logic

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

c) can use middleware to provide a standard way of communicating between software from more than one vendor

With the two-tier client-server architecture, the server is responsible for the ________ logic. a) application b) presentation c) data access d) session e) physical

c) data access

Another term for a mail user agent is: a) message transfer agent b) router agent c) e-mail client d) webcast package e) Web client

c) e-mail client

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

c) places all or almost all of the application logic on the client

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) refers to the size of the cable connecting the clients to the network

c) places all or almost all of the application logic on the server

A ________ is a group of computers linked together so that they appear to act as one computer. a) workstation b) transaction terminal c) server farm d)network computer e) transaction terminal

c) server farm

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

c) the presentation logic is on the client, while the data storage and data access logic are on the server

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

c) web server

_________ 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

c) webcasting

With ______________, the cloud provider manages the hardware including servers, storage, and networking components. The organization is responsible for all the software, including operating system (and virtualization software), database software, and its applications and data. a) private clouds b) hardware clouds c) storage services d) IaaS

d) IaaS

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

d) Uniform Resource Locator

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

d) all data on the server must travel to the client for processing

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

d) application architecture

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

d) mainframe

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

d) n-tier

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

e) application access storage

What technique is used by most videoconferencing applications to reduce the amount of data being transmitted? a) hashing b) encryption c) authentication d) identification e) compression

e) compression

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

e) permits an e-mail message to remain stored on the mail server even after they have been read by a client computer

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

e) request line, request header, request body

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

false

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

false

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

false

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

false

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

false

The earliest data communications networks were client-server networks. true false

false

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

false

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

true

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

true

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

true

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

true

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. true false

true

Your typical web browsing scenario where a person using a web browser accesses a web page from a server on the Internet is a good example of a client-server application architecture. true false

true