Deck 11: Networked Applications

Question 1

If companies place antivirus software on all of their client PCs,this will stop almost all virus infections.

Answer 1

False

Question 2

Terminal-host systems tend to have poor response times compared with client-server processing.

Answer 2

True

Question 3

RFC 822 and RFC 2822 standards govern ________.

A)plain text content of e-mail messages
B)HTTP page contents
C)HTML commands and content
D)plain text,graphic,and video content of e-mail messages
E)HTML commands

Answer 3

A

Question 4

Antivirus software checks e-mail attachments for ________.

A)viruses
B)Trojan horses
C)Both A and B
D)Neither A nor B

Question 5

Users are primarily concerned about the ________ layer.

A)application
B)transport
C)internet
D)data link
E)physical

Question 6

An e-mail user sending messages to his or her mail server would most likely use ________.

A)the IMAP standard
B)the POP standard
C)either the IMAP or POP standard
D)the SMTP standard
E)RFC 2822

Question 7

________ depend on the ability of mail servers to store messages.

A)Senders
B)Receivers

Question 8

In client-server processing,processing is done on the ________.

A)client
B)server
C)On both of the above.
D)host computer

Question 9

E-mail bodies that have non-English text use ________.

A)RFC 822 and RFC 2822
B)HTTP
C)MIME
D)UNICODE
E)None of the above.

Question 10

Mail servers communicate with each other by using ________.

A)POP
B)IMAP
C)either POP or IMAP
D)RFC 2822
E)SMTP

Question 11

SMTP is a standard used at the ________ layer to transfer mail messages.

A)physical
B)application
C)internet
D)data link
E)transport

Question 12

The most widely used standard for downloading e-mail to e-mail clients is ________.

A)the IMAP standard
B)the POP standard
C)The IMAP and POP standards are equally popular.
D)the SMTP standard

Question 13

Which of the following allows you to read your e-mail easily at Internet cafés?

A)POP.
B)Web-enabled e-mail.
C)Both A and B
D)Neither A nor B

Question 14

Which of the following offers more reliable antivirus protection?

A)Antivirus software on user PCs.
B)Antivirus software on the mail server.
C)Both A and B are about equally reliable.

Question 15

In terminal-host systems,almost all processing is done on the ________.

A)host
B)terminal
C)Both of the above do a good deal of processing.
D)server

Question 16

Viewing webpages with a Web browser is an example of a client-server architecture.

Question 17

According to the principle of defense in depth,antivirus filtering should be done in at least ________ location(s).

A)1
B)2
C)3

Question 18

If you are using a Web-enabled e-mail system ________.

A)you have to install a special Web-enabled e-mail client to access your e-mail
B)you access and send mail by using a Web browser
C)you are more likely to be susceptible to viruses being introduced on your computer
D)you are unable to send/receive e-mail messages containing information other than letters or numbers

Question 19

The way in which application layer functions are spread among computers to deliver service to users is called ________.

A)distributed processing
B)peer-to-peer computing
C)client/server computing
D)an application architecture
E)Both b.and c.

Question 20

Processing is done only on a centralized machine in the ________ architecture.

A)client/server
B)P2P
C)terminal-host
D)None of the above.

Question 21

Codec data comes after the ________ header in VoIP transport frames.

A)IP
B)RTP
C)UDP
D)Ethernet
E)TCP

Question 22

Which of the following is likely to dominate in VoIP?

A)SIP.
B)H.323.

Question 23

How many HTTP request-response cycles are needed to transfer a webpage containing three graphics images?

A)1.
B)2.
C)3.
D)4.
E)None of the above.

Question 24

Speech codecs vary with respect to ________.

A)compression
B)voice quality
C)Both A and B
D)Neither A nor B

Question 25

Variable time delays between successive packets in a transport stream is called ________.

A)a timing error
B)a warble
C)RTP
D)a SIP violation
E)jitter

Question 26

For the transport layer,VoIP uses ________ for transport transmission.

A)TCP
B)UDP
C)codec standards
D)IP
E)Ethernet

Question 27

Telephones that can plug directly into a VoIP network are called PCs with multimedia hardware and added software.

Question 28

VoIP uses ________ switching.

A)circuit
B)packet
C)Either A or B

Question 29

A media gateway translates ________ transmissions.

A)signaling
B)transport
C)Both A and B
D)Neither A nor B

Question 30

How many HTTP request-response cycles are needed to transfer a webpage containing 88 lines of text and three different images?

A)1.
B)3.
C)4.
D)88.
E)91.

Question 31

HTTP is used at the ________ layer.

A)physical
B)data link
C)application
D)internet
E)transport

Question 32

VoIP users often have ________ in their phones or on their computers.

A)media gateways
B)codecs
C)Both A and B
D)Neither A nor B

Question 33

In HTTP,fields normally are ended by ________.

A)a colon (:)
B)a space
C)a carriage return/line feed
D)a blank line
E)All of the above.

Question 34

VoIP is the transmission of telephone signals over circuit-switched networks.

Question 35

RTP supports ________.

A)faster transmission speed
B)jitter control
C)Both A and B
D)Neither A nor B

Question 36

Which of the following is used in webpage bodies?

A)HTTP.
B)HTML.
C)Both A and B
D)Neither A nor B

Question 37

A media gateway connects a client computer or VoIP phone to the VoIP network.

Question 38

SIP is a ________ protocol for VoIP.

A)signaling
B)transport
C)Both A and B
D)Neither A nor B

Question 39

Which header comes SECOND in a VoIP transport packet?

A)RTP.
B)UDP.
C)IP.
D)Application.

Question 40

Which of the following is used to retrieve Web pages?

A)HTTP.
B)HTML.

Question 41

In cloud ________,the user accesses the software over the Internet,often with a browser.

A)SaaS
B)utility computing

Question 42

Which of the following is an attraction of cloud utility computing?

A)Flexibility.
B)Control over operations.
C)Both A and B
D)Neither A nor B

Question 43

In virtualization,the real computer's capacity is divided among a number of ________.

A)hypervisors
B)virtual machines
C)Neither A nor B

Question 44

Utility computing is usually offered as a pay-as-you-go service.

Question 45

________ is a standard to describe a file's format type.

A)RFC 2822
B)SMTP
C)HTML
D)MIME

Question 46

Which of the following is not an issue for cloud utility computing?

A)The possibility of losing access.
B)The possibility of getting locked into proprietary software.
C)Very high costs.
D)Security concerns.
E)Legal complications.

Question 47

Utility computing is a new phenomenon.

Question 48

If a company runs its own data center,it might face problems with ________.

A)overprovisioning
B)underprovisioning
C)Both A and B
D)Neither A nor B

Question 49

In ________,a company offloads server processing work to another company at a remote site.

A)utility computing
B)Software as a Service
C)None of the above.

Question 50

Cloud computing is a form of computing where the company outsources some combination of servers,server applications,and client PC software to a cloud service provider.

Question 51

Virtualization has contributed to the popularity of cloud computing.

Question 52

In HTTP response messages,the attached file is preceded by a ________.

A)colon (:)
B)space
C)blank line
D)All of the above.

Question 53

SaaS software vendors may make an application available by ________.

A)hosting it on their own webservers
B)allowing the application to be downloaded to the consumer device
C)Both A and B
D)Neither A nor B

Question 54

In HTTP,keywords usually are followed by ________.

A)a colon (:)
B)a space
C)a carriage return/line feed
D)a blank line
E)All of the above.

Question 55

Which of the following is a factor that has contributed to the popularity of cloud computing?

A)The Internet.
B)Web services.
C)Both A and B
D)Neither A nor B

Question 56

Which of the following services predates cloud computing?

A)Software as a Service.
B)Utility computing.
C)Both A and B
D)Neither A nor B

Question 57

Which of the following is not an issue for cloud Software as a Service?

A)The possibility of losing access.
B)The possibility of getting locked into proprietary software.
C)Security concerns.
D)Legal complications.
E)All of the above are issues for cloud Software as a Service.

Question 58

The code "200" may be found in HTTP ________ messages.

A)request
B)response
C)Both A and B
D)Neither A nor B

Question 59

Which of the following is an attraction of cloud SaaS?

A)Potential lowered costs in hardware and personnel.
B)Mobility.
C)Collaboration.
D)All of the above.

Question 60

Which of the following is not an issue for cloud utility computing?

A)The possibility of losing access.
B)The possibility of getting locked into proprietary software.
C)Security concerns.
D)Legal complications.
E)All of the above are issues for cloud utility computing.

Question 61

Which of the following is true?

A)A Web service is one way to implement a SOA.
B)SOAP is one way to implement a Web service.
C)Both A and B
D)Neither A nor B

Question 62

The purpose of ________ is to allow a calling program to understand how to use a service object.

A)SOAP
B)XML
C)WDSL
D)UDDI

Question 63

By definition,Web services are implemented using SOAP.

Question 64

In SOA,what language can be used to create service objects?

A)Java.
B)C++.
C)Both A and B
D)Neither A nor B

Question 65

In SOA,access to service objects is ________.

A)ad hoc
B)standardized
C)Either a.not b.
D)Neither A nor B

Question 66

The purpose of ________ is to help someone to find an appropriate service object.

A)SOAP
B)XML
C)WDSL
D)UDDI

Question 67

Transient client presence tends to be a problem in ________.

A)P2P applications
B)client/server applications
C)Both A and B
D)Neither A nor B

Question 68

In SOA,SOAP messages are encoded in ________.

A)HTML
B)XML
C)Both A and B
D)Neither A nor B

Question 69

SOAs are language-independent.

Question 70

SOAs are attractive because of ________

A)reuse
B)language independence
C)Both A and B
D)Neither A nor B

Question 71

________ use ________ that provide services to customers using WWW interaction standards.

A)Web services,service objects
B)Service objects,web services

Question 72

To be considered a peer-to-peer application architecture,there can be no dedicated servers included on the network.

Question 73

Which of the following is true?

A)A Web service is one way to implement a SOA.
B)A Web service is one way to implement SOAP.
C)Both A and B
D)Neither A nor B

Question 74

A service-oriented architecture is an application architecture in which a few large programs interact to provide a unified service.

Question 75

When deciding whether to use cloud computing,a company must consider security risk.

Question 76

Which of the following is considered a bigger problem with traditional client-server based architectures than with peer-to-peer architectures?

A)Underutilized processing capacity of client PCs.
B)Potential for essential data/services to become unavailable as a device is turned off.
C)Both A and B
D)Neither A nor B

Question 77

In virtualization,each virtual machine acts like a stand-alone computer to its users.

Question 78

In ________ file retrieval,your computer downloads a file from a server.

A)P2P
B)client/server
C)BitTorrent
D)None of the above.

Question 79

The terms SOA and Web services mean the same thing.

Question 80

In SOA,calls are placed to ________.

A)programs
B)subprograms
C)subroutines
D)service objects