Deck 6: Data Communication and the Cloud

Question 1

An internet is a network of networks that connect LANs, WANs, and other internets.

Answer 1

True

Question 2

Communications speeds are expressed in bytes, whereas memory sizes are expressed in bits.

Answer 2

False

Question 3

Bluetooth is a wireless protocol designed for transmitting data over long distances.

Answer 3

False

Question 4

As DSL signals interfere with telephone signals, DSL data transmission and telephone conversations cannot occur simultaneously.

Question 5

Wired LAN connections use the IEEE 802.3 protocol, while wireless LAN connections use the IEEE 802.11 protocol.

Question 6

A modem converts digital data into analog signals.

Question 7

An intranet is a private internet that is used exclusively within an organization.

Question 8

A university would use a WAN to connect its campuses in two cities.

Question 9

Wired LAN connections use a protocol standard called Ethernet to communicate.

Question 10

The abbreviations k, M, and G have the same meaning for computer memory as they have for communication speeds.

Question 11

A computer network is a collection of computers that communicate with one another over transmission lines or wirelessly.

Question 12

For two devices to communicate, they must use the same protocol.

Question 13

With a WAN, an organization is allowed to place communications lines wherever it wants, because all lines reside on its premises.

Question 14

NICs which support 10/100/1000 Ethernet allow for transmission at a rate of 10, 100, or 1,000 Mbps.

Question 15

A computer network between Seattle and Philadelphia is made possible through a LAN.

Question 16

When you connect to the Internet, you are actually connecting to an ISP.

Question 17

The World Wide Web sponsors committees that create and publish protocols and other standards.

Question 18

A switch is a special-purpose computer that receives and transmits wired traffic on a LAN.

Question 19

UTP cable contains sets of wires that are twisted together to improve signal quality.

Question 20

An NIC is a device that connects a computer's or printer's circuitry to network wires.

Question 21

The owner of a domain name is capable of changing the affiliated IP addresses at its discretion.

Question 22

DSL modems use their own protocols for data transmission.

Question 23

ICANN controls the assignment of all IP addresses, both public and private.

Question 24

If you had a private IP address for your computer, every time you moved it, the Internet would have to update its addressing mechanisms to route traffic to your new location.

Question 25

TCP/IP Protocol architecture is a scheme of four protocol types arranged in layers.

Question 26

To ensure security, VPN client software decrypts the original message so that its contents are protected from snooping.

Question 27

A domain name is a worldwide-unique name that is affiliated with a public IP address.

Question 28

Cable modems modulate in such a way that their signals interfere with TV signals.

Question 29

Unlike HTTP, FTP does not have a secure version.

Question 30

A packet is a piece of a message that is handled by programs that implement IP.

Question 31

TCP provides internet routing and IP provides reliable internet transport.

Question 32

Web servers run on a server-tier computer and manage HTTP traffic by sending and receiving Web pages to and from clients.

Question 33

FTP is the protocol used between browsers and Web servers.

Question 34

HTML is the most common language for defining the structure and layout of Web pages.

Question 35

A URL usually consists of a protocol followed by a domain name or public IP address.

Question 36

In three-tier architecture, the user tier consists of computers that run Web servers and process application programs.

Question 37

The primary protocol of the Internet is called IP.

Question 38

Broadband lines typically have transmission speeds less than 56 Kbps.

Question 39

HTTPS is the secure version of HTTP.

Question 40

SMTP is the protocol used between browsers and Web servers.

Question 41

A private internet that is used exclusively within an organization is called a(n)________.

A) ethernet
B) intranet
C) cloud
D) server

Question 42

To enable the seamless flow of data across the networks that comprise an internet, an elaborate scheme called a(n)________ is used.

A) layered protocol
B) virtual private network
C) three-tier system
D) remote access system

Question 43

One of the advantages of cloud-based hosting is the in-depth visibility of security and disaster preparedness.

Question 44

Silverlight is an add-on to browsers that was developed by Adobe and is useful for providing animation, movies, and other advanced graphics inside a browser.

Question 45

The term "cloud" is used to refer to the elastic leasing of pooled computer resources over the Internet.

Question 46

Computers that reside in different geographic locations are connected using a(n)________.

A) WAN
B) LAN
C) URL
D) IP address

Question 47

A ________ is a special-purpose computer that receives and transmits wired traffic on the LAN.

A) codec
B) modem
C) switch
D) port

Question 48

Which of the following is the device that connects a computer's or printer's circuitry to network wires?

A) port
B) switch
C) router
D) NIC

Question 49

A computer ________ is a collection of computers that communicate with one another over transmission lines or wirelessly.

A) database
B) application
C) network
D) server

Question 50

Remote access systems save time and travel expense and make the skills and abilities of an expert available in places where he or she is not physically located.

Question 51

An organization that provides software as a service provides only operating systems and application programs.

Question 52

The most basic cloud offering is platform as a service (PaaS), which is the cloud hosting of a bare server computer or disk drive.

Question 53

For a printer or laptop to connect to a wireless LAN, it must have a(n)________.

A) hyperlink
B) UTP cable
C) WNIC
D) DSL

Question 54

Teleaction reduces the need for local support staff.

Question 55

A ________ is a set of rules that programs on two communicating devices follow.

A) codec
B) URL
C) packet
D) protocol

Question 56

Amazon EC2 and Amazon S3 are both examples of platform as a service.

Question 57

Salesforce.com is an example of a cloud vendor who provides software as a service.

Question 58

Which of the following is the distinguishing feature of a LAN as compared to a WAN?

A) single location
B) number of users
C) bandwidth
D) hardware requirements

Question 59

Teleaction increases the value of robotics.

Question 60

Most LAN connections are made using ________.

A) Sc/TP cable
B) UTP cable
C) STP cable
D) F/TP cable

Question 61

________ typically have transmission speeds less than 56 Kbps.

A) Narrowband lines
B) Digital subscriber lines
C) Cable modems
D) WAN wireless connections

Question 62

Which of the following is true about cable modems?

A) They provide high-speed data transmission using telephone cables.
B) They offer consistent performance, irrespective of the number of users sending and receiving data.
C) They rely on high-capacity optical fiber cables and use their own protocols for data transmission.
D) They provide faster download speeds than DSL modems.

Question 63

Which of the following is true of DSL modems?

A) DSL modem signals do not interfere with telephone signals.
B) DSL modems use the same protocols as cable modems for data transmission.
C) DSL modem signals replace phone signals and are sent to the ISP.
D) DSL data transmission and telephone conversations cannot occur simultaneously.

Question 64

The protocols used on the Internet are arranged according to a structure known as the ________ protocol architecture.

A) FTP
B) VOIP
C) ICANN
D) TCP/IP

Question 65

________ is a wireless protocol designed for transmitting data over short distances, replacing cables.

A) IPv6
B) PaaS
C) Bluetooth
D) Silverlight

Question 66

Which of the following TCP/IP application-layer protocols is used for e-mail transmission?

A) FTP
B) HTTPS
C) SMTP
D) IP

Question 67

A(n)________ converts an analog signal to a digital one during data transmission.

A) switch
B) access point
C) modem
D) ISP

Question 68

The top layer of TCP/IP Protocol architecture is related to ________.

A) internets
B) transport
C) applications
D) data links

Question 69

Which of the following TCP/IP application-layer protocols is used to move files over the Internet and to maintain Web sites?

A) FTP
B) IP
C) HTTPS
D) HTTP

Question 70

________ modems modulate in such a way that they do not interfere with TV signals, even though they use the same lines.

A) DSL
B) Dial-up
C) Cable
D) ADSL

Question 71

The primary protocol of the Internet layer of the TCP/IP protocol architecture is called ________.

A) IP
B) SMTP
C) HTTP
D) TCP

Question 72

Communications speeds are expressed in ________.

A) bits
B) bytes
C) hertz
D) packets

Question 73

The IEEE 802.3 protocol standard is also known as ________.

A) Bluetooth
B) Ethernet
C) Intranet
D) Internet

Question 74

Which of the following protocols is concerned with the application layer of TCP/IP Protocol architecture?

A) HTTP
B) IEEE 802.3
C) IEEE 802.11
D) IP

Question 75

Which of the following protocols guarantees secure data transmission?

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

Question 76

Which of the following statements is true about IEEE 802.3?

A) It is the protocol for wireless LAN connections.
B) It is the protocol for Bluetooth.
C) It is the protocol for wired LAN connections.
D) It is the universal standard protocol for WNICs.

Question 77

Which of the following is a component of a LAN device that processes wireless traffic and communicates with the wired switch?

A) access point
B) packet
C) server
D) router

Question 78

Which of the following is a function of an ISP?

A) It transmits data over short distances, replacing cables.
B) It serves as a gateway to the Internet.
C) It describes how messages must be processed for wired transmission.
D) It connects computers within a LAN.

Question 79

Which of the following statements is true about the IEEE 802.11 protocol?

A) It is also known as Ethernet.
B) It is used for wired LAN connections.
C) It cannot be processed by access points.
D) It allows speeds of up to 600 Mbps.

Question 80

A(n)________ is a piece of a message that is handled by programs that implement IP.

A) e-mail
B) packet
C) tag
D) attribute