Deck 11: Networked Applications

Question 1

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

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

Answer 1

C

Question 2

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

A)IMAP standard
B)POP standard
C)either IMAP or POP standard
D)SMTP standard

Answer 2

D

Question 3

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

A)IMAP standard
B)POP standard
C)either IMAP or POP standard
D)SMTP standard

Answer 3

C

Question 4

A networked application is an application that requires a network to operate.

Question 5

The Trojan horse placed on the first compromised GHOSTNET client could ________.

A)conduct audio and video surveillance
B)delete files
C)both A and B
D)neither A nor B

Question 6

RFC 822 and RFC 2822 standards govern ________.

A)plain text content of e-mail messages
B)HTTP page contents
C)HTML page contents
D)pages written in any language

Question 7

In XSS,the malicious script that gets placed in a webpage sent to a target is ________.

A)created by a Trojan horse
B)sent by someone who has compromised the webserver
C)embedded in a database the user queries
D)sent by a user

Question 8

Antivirus software checks e-mail attachments for ________.

A)viruses
B)Trojan horses
C)both A and B
D)neither A nor B

Question 9

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

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

Question 10

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 11

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

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

Question 12

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

Question 13

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

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

Question 14

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

A)POP
B)Web-enabled e-mail
C)both A and B
D)neither A nor B

Question 15

The attack on GHOSTNET began with ________.

A)a wireless vulnerability
B)a social engineering attack
C)malicious mobile code
D)an insider attack

Question 16

Users are primarily concerned with the ________ layer.

A)application
B)transport
C)internet
D)physical

Question 17

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 18

Mail servers communicate with each other by using ________.

A)POP
B)HTTP
C)RFC 2822
D)SMTP

Question 19

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

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

Question 20

In SQL injection attacks,the attacker sends ________.

A)a legitimate SQL query
B)a malformed SQL query
C)user input that is used in an SQL query
D)an SQL query in malware that is delivered to the target computer

Question 21

Which of the following signaling standards is likely to dominate in VoIP?

A)SIP
B)H)323

Question 22

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 23

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

Question 24

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

Question 25

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

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

Question 26

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 27

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

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

Question 28

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

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

Question 29

Which header comes SECOND in a VoIP transport packet?

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

Question 30

SIP is a ________ protocol for VoIP.

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

Question 31

When an e-mail user encrypts an outgoing messages 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 32

The main promise of VoIP is to ________.

A)add video
B)improve voice quality
C)improve reliability
D)reduce cost

Question 33

A media gateway translates ________ transmissions.

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

Question 34

Which of the following is used to retrieve Web pages?

A)HTTP
B)HTML
C)RTP
D)SQL

Question 35

Speech codecs vary with respect to ________.

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

Question 36

RTP supports ________.

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

Question 37

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 38

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

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

Question 39

VoIP ________ uses the Internet Protocol for transmission.

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

Question 40

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

A)1
B)2
C)3
D)4

Question 41

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 42

Which of the following steps are done in order during a call with Skype?

A)login, signaling, transport
B)signaling, transport, end a call
C)login, signaling, end a call
D)none of the above

Question 43

Skype offers ________.

A)free calling among Skype customers
B)free calling to and from Public Switched Telephone Network customers
C)both A and B
D)neither A nor B

Question 44

BitTorrent's .torrent files are stored on the ________.

A)swarm
B)index server
C)tracker
D)individual peers

Question 45

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 46

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

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

Question 47

In BitTorrent,a(n)________ is a server that coordinates the file transfer.

A)swarm
B)index
C)tracker
D)none of the above

Question 48

Which element of the Skype network is in charge of transport?

A)the login server
B)the calling and called host nodes
C)super nodes
D)media gateways

Question 49

Which of the following is a security risk associated with BitTorrent?

A)danger caused by opening ports on the firewall
B)danger that an employee may download an infected file that cannot be rejected by filtering
C)both A and B
D)neither A nor B

Question 50

Tor was created to improve ________.

A)anonymity
B)end-to-end encryption
C)file download speed
D)all of the above

Question 51

In BitTorrent,the group of all connected computers that have all or part of the file to be downloaded is called the ________.

A)swarm
B)index peers
C)trackers
D)none of the above

Question 52

Which element of the Skype network is in charge of signaling?

A)the login server
B)host nodes
C)super nodes
D)media gateways

Question 53

The main advantage of ________ file sharing is that it brings cost savings by using clients rather than server processing power.

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

Question 54

In Skype,________ is the process where a Skype application looks up the username and IP address of the party it wants to contact.

A)login
B)directory search
C)transport
D)signaling

Question 55

In BitTorrent,a(n)________ website is a site the BitTorrent client program goes to in order to get .torrent files.

A)swarm
B)index
C)tracker
D)none of the above

Question 56

Which of the following is NOT one of the main elements of the Skype network?

A)login server
B)proxy server
C)host node
D)super node

Question 57

Which of the following is used to define webpage bodies?

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

Question 58

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 59

Which of the following is a processor-sharing application?

A)BitTorrent
B)SETI@home
C)SIP
D)Skype

Question 60

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 61

Tor provides confidentiality ________.

A)all the way to the destination host
B)up to the entry P2P node
C)up to the exit P2P node
D)Tor does not provide confidentiality.

Question 62

Most P2P applications use servers.