Deck 11: Networked Applications

Question 1

Content delivery networks mainly ________.

A) increase transmission speed
B) increase program selection
C) decrease program selection
D) reduce latency

Answer 1

D

Question 2

A ________ may have multiple ________.

A) physical server; virtual machines
B) virtual machine; physical servers
C) both A and B
D) neither A nor B

Answer 2

A

Question 3

A lesson of XSS is that programmers should never trust ________.

A) contractors
B) their own staff colleagues
C) databases
D) user input

Answer 3

D

Question 4

Netflix uses AWS for its ________.

A) recommendation system
B) content delivery appliances
C) both A and B
D) neither A nor B

Question 5

Falling network costs are resulting in ________.

A) the consolidation of servers
B) server farms for cloud computing
C) both A and B
D) neither A nor B

Question 6

Having all privileges on a computer is known as having ________.

A) access
B) totality
C) root privileges
D) mojo

Question 7

The primary applications architecture is ________.

A) TCP/IP
B) OSI
C) client/server
D) HTTP

Question 8

The main advance that made the client/server application architecture possible was ________.

A) the Internet
B) growing client processing power
C) growing application sophistication
D) new input/output methods

Question 9

Creating a new VM is ________.

A) booting
B) startup
C) birthing
D) instantiation

Question 10

The primary applications architecture is ________.

A) TCP/IP
B) OSI
C) both A and B
D) neither A nor B

Question 11

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

Question 12

A networked application requires a network to operate.

Question 13

Typically,the most common way for an attacker to get extensive privileges on a computer is ________.

A) to take over an application program
B) to take over the operating system
C) to take over a computer's hardware
D) privilege escalation after a hack

Question 14

The main advance that made the client/server application architecture possible was ________.

A) the Internet
B) growing client processing power
C) growing application sophistication
D) new input/output methods

Question 15

Compared to physical servers,virtual machines ________.

A) can be moved more easily
B) potentially have infinite capacity
C) both A and B
D) neither A nor B

Question 16

For ________,Netflix owns and operates the servers.

A) its recommendation system
B) e-mail
C) both A and B
D) neither A nor B

Question 17

When you login to a website and it responds by saying,"Hello yourname," this is primarily creates a ________ problem.

A) security
B) privacy
C) user interface
D) network

Question 18

The explosion of apps on small mobile devices raises ________ issues.

A) cumulative cost
B) inventory control
C) security
D) network load

Question 19

Netflix transcoding is based on ________.

A) network speed
B) the user's display device characteristics
C) both A and B
D) neither A nor B

Question 20

Growing client processing power was a major driving force behind the ________ application architecture.

A) client/server
B) P2P
C) both A and B
D) neither A nor B

Question 21

Netflix has the most VMs ________.

A) on weekends
B) on weekdays
C) in the evenings
D) The number of VMs is fixed over periods of a month or longer.

Question 22

Which type of service manages application software for users?

A) IaaS
B) SaaS
C) both A and B
D) neither A nor B

Question 23

If you are downloading a webpage containing three graphics images,which file will you download first?

A) The first image.
B) The second image.
C) The third image.
D) none of the above

Question 24

For Netflix,Google is a(n)________.

A) IaaS
B) SaaS
C) both A and B
D) neither A nor B

Question 25

Which tends to have a data field?

A) an HTTP request message
B) an HTTP response message
C) both A and B
D) neither A nor B

Question 26

Which of the following is a file transfer standard?

A) HTML
B) HTTP
C) both A and B
D) neither A nor B

Question 27

An IaaS owns and operates ________.

A) servers
B) application programs
C) both A and B
D) neither A nor B

Question 28

IaaSs own ________.

A) application software
B) servers
C) both A and B
D) neither A nor B

Question 29

An IaaS owns ________.

A) servers
B) application programs
C) both A and B
D) neither A nor B

Question 30

When a cloud client customer moves from one client machine to another,________.

A) the same data files are available
B) the same application software personalization is in effect
C) both A and B
D) neither A nor B

Question 31

The first line in an HTTP request message is called the ________.

A) request line
B) status line
C) both A and B
D) neither A nor B

Question 32

CSPs often offer ________.

A) ISP services
B) IaaS services
C) both A and B
D) neither A nor B

Question 33

In cloud computing,latency is important for ________.

A) AI-based cloud applications
B) e-mail
C) both A and B
D) neither A nor B

Question 34

Which of the following is a file format standard?

A) HTML
B) HTTP
C) both A and B
D) neither A nor B

Question 35

For Netflix,________ is a(n)________,and ________ is a(n)________.

A) Google; IaaS; AWS; IaaS
B) Google; SaaS; AWS; SaaS
C) Google; IaaS; AWS; SaaS
D) Google; SaaS; AWS; IaaS

Question 36

On networks,cloud computing is increasing the need for ________.

A) sudden changes in traffic
B) reliability
C) controlled latency
D) all of the above

Question 37

Cloud customers are concerned that ________.

A) their data might be hacked
B) the government may access their data secretly
C) both A and B
D) neither A nor B

Question 38

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

A) 3
B) 4
C) 88
D) 91

Question 39

For Netflix,AWS is a(n)________.

A) ISP
B) IaaS
C) SaaS
D) all of the above

Question 40

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

A) 1
B) 2
C) 3
D) none of the above

Question 41

Speech codecs ________.

A) translate human voice signals into digital signals for transmission
B) translate human voice signals into analog signals for transmission
C) both A and B
D) neither A nor B

Question 42

VoIP ________ uses the Internet Protocol for transmission.

A) always
B) usually
C) seldom
D) never

Question 43

In e-mail,SSL/TLS provides ________.

A) link encryption
B) end-to-end encryption
C) both A and B
D) neither A nor B

Question 44

Why is link-by-link encryption for confidentiality not fully secure even if there is encryption for confidentiality in all links along the way?

A) There cannot be confidentiality on each link.
B) Devices along the way may not be secure.
C) both A and B
D) neither A nor B

Question 45

Which of the following allows you to read your e-mail easily on an Internet café's computer?

A) IMAP
B) HTTP
C) HTML
D) SMTP

Question 46

When an e-mail user encrypts an outgoing message with SSL/TLS,how far will this encryption extend?

A) to the sender's e-mail server
B) to the receiver's e-mail server
C) to the receiver's client host
D) to an application program on the receiver's client host

Question 47

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

A) RFC 822 and RFC 2822
B) HTTP
C) MIME
D) UNICODE

Question 48

There is usually a time difference ________.

A) between transmission from the sender to his or her mail server and the transmission to the receiver's mail server
B) between transmission to the receiver's mail server and the reading of the message by the receiver.
C) both A and B
D) neither A nor B

Question 49

When the sender's mail host sends the message to the receiver's mail host,what standard does it use?

A) HTTP
B) HTML
C) SMTP
D) FTP

Question 50

In traditional e-mail,when a client sends a message to its mail host,what standard does it use?

A) HTTP
B) HTML
C) SMTP
D) FTP

Question 51

A traditional e-mail user retrieving messages from her mail server could use ________.

A) IMAP
B) HTTP
C) HTML
D) SMTP

Question 52

VoIP is an acronym for ________.

A) Voice over IP
B) Video over IP
C) both A and B
D) neither A nor B

Question 53

The first line in an HTTP response message is called the ________.

A) status line
B) command line
C) reply line
D) response line

Question 54

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

A) media gateways
B) codecs
C) both A and B
D) neither A nor B

Question 55

What is the universal standard for end-to-end encryption?

A) SSL/TLS
B) IPsec
C) S/MIME
D) There is no universal standard for end-to-end encryption.

Question 56

In e-mail,UNICODE enhances security.

Question 57

In Web-based e-mail,when a client sends a message to its mail host,what standard does it use?

A) HTTP
B) HTML
C) SMTP
D) FTP

Question 58

Which of the following provides end-to-end encryption?

A) SSL/TLS
B) S/MIME
C) both A and B
D) neither A nor B

Question 59

Which of the following forms of e-mail is usually easier to use if you are using someone else's computer?

A) Webmail
B) Mail programs using SMTP and POP
C) Mail programs using SMTP and IMAP
D) none of the above

Question 60

In HTTP,each line after the first begins with a ________.

A) keyword
B) command
C) CRLF
D) value

Question 61

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

Question 62

Speech codecs vary with respect to ________.

A) compression
B) voice quality
C) both A and B
D) neither A nor B

Question 63

RTP supports ________.

A) faster transmission speed
B) jitter control
C) both A and B
D) neither A nor B

Question 64

In which VoIP phase does Skype use a server instead of service directly between peers?

A) signaling
B) transport
C) login
D) none of the above

Question 65

Which phase of VoIP is different in traditional VoIP and Skype?

A) signaling
B) transport
C) login
D) none of the above

Question 66

Skype login is necessary so that the user ________.

A) can find the IP address of a Skype proxy server
B) can find the IP address of a client it wishes to communicate with
C) can find her own Skype address
D) none of the above

Question 67

Which of the following is considered a bigger problem with client/server architecture than peer-to-peer architecture?

A) underutilized processing capacity of client PCs
B) potential for essential data/services to become unavailable because devices providing services are often turned off
C) lack of corporate control
D) none of the above

Question 68

A media gateway translates ________ methods.

A) signaling
B) transport
C) both A and B
D) neither A nor B

Question 69

SIP is a ________ protocol for VoIP.

A) signaling
B) transport
C) both A and B
D) neither A nor B

Question 70

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

A) TCP
B) UDP
C) SIP
D) IP

Question 71

In which VoIP phase does Skype implement with peer-to-peer service?

A) signaling
B) login
C) both A and B
D) neither A nor B

Question 72

P2P applications ________.

A) increase IT control
B) increase user control
C) both A and B
D) neither A nor B

Question 73

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

Question 74

In Skype,a directory search to find the IP address of a client to be called,is done by ________.

A) peers
B) super nodes
C) Skype servers
D) direct communication between the calling and receiving clients

Question 75

The SIP invite is transmitted to the ________.

A) called party's SIP proxy server
B) called party's VoIP phone or computer
C) both A and B
D) neither A nor B

Question 76

In Skype,signaling is done by ________.

A) peers
B) super nodes
C) direct communication between the calling and receiving clients
D) none of the above

Question 77

In Skype,transport is governed by ________.

A) peers providing signaling
B) super nodes
C) Skype servers
D) direct communication between the calling and receiving peers

Question 78

In VoIP traffic,the data field in a signaling packet usually carries codec data.

Question 79

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

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

Question 80

Skype provides ________.

A) Voice over IP
B) Video over IP
C) both A and B
D) neither A nor B