Deck 3: Networks

Question 1

The bandwidth of a channel that carries digital data is usually measured in ___________.

A) bytes per second
B) bits per second
C) GHz
D) microwaves

Answer 1

B

Question 2

Network channels that are capable of moving at least 25 megabits of data per second are classified as _________ channels.

Answer 2

broadband

Question 3

The Internet is the world's largest WAN.

Answer 3

True

Question 4

Networks can be classified according to their size and geographic scope.

Question 5

Microwaves have more carrying capacity than radio waves.

Question 6

Which type of network topology connects a peripheral device to a host device?

A) Mesh
B) Star
C) Bus
D) Point-to-point

Question 7

Which type of network topology connects multiple devices to a central device?

A) Mesh
B) Star
C) Bus
D) Point-to-point

Question 8

In the context of communication networks, the term __________ refers to the structure and layout of network components.

Question 9

Which type of network connects smart devices or consumer electronics within a range of about 30 feet (10 meters) and without the use of wires or cables?

A) PAN (personal area network)
B) LAN (local area network)
C) WAN (wide area network)
D) VPN (virtual private network)

Question 10

The most widespread wireless channel for communication networks is radio frequency (RF) signals.

Question 11

Which of the following is an advantage of wired connections?

A) More secure
B) More dependable
C) Faster speeds
D) All of the above

Question 12

In a wireless network, RF signals are sent and received by a ______________.

Question 13

When interference affects a wireless signal, data must be retransmitted.

Question 14

Wireless connections use unlicensed frequencies that are available for public use, including 2.4 GHz and _____ GHz, which is subject to less interference from other devices, but it has a more limited range.

Question 15

Which type of network covers a large geographical area and usually consists of several smaller networks, which might use different computer platforms and network technologies?

A) PAN
B) LAN
C) WAN
D) VPN

Question 16

A communication _________ is the medium used to transport information from one network device to another.

Question 17

Which type of cable is used for high-capacity trunk lines that provide main routes for telephone, cable, and Internet communications?

A) Category 6 cables
B) Fiber-optic cables
C) Coaxial cables
D) All of the above

Question 18

Which type of network topology allows for redundant paths between devices that can be used to bypass failed devices?

A) Mesh
B) Star
C) Bus
D) Point-to-Point

Question 19

________ is the term for the transmission capacity of a communication channel.

Question 20

Wireless connections use licensed frequencies that are available for public use.

Question 21

Parcels of data that are sent over a network are called ________.

Question 22

In the context of networks, a communication __________ refers to a set of rules for efficiently transmitting data from one network node to another.

Question 23

Networks that form the Internet are maintained by ____________.

A) ISPs
B) IXPs
C) ICANN
D) All of the above

Question 24

On a network, which protocol is responsible for dividing files into chunks, adding headers containing information for reassembling packets in their original order, and error checking?

A) UDP
B) IP
C) TCP
D) FTP (File Transfer Protocol)

Question 25

Which of the following is an example of a DCE?

A) Router
B) Modem
C) Hub
D) All of the above

Question 26

Data cannot flow over multiple networks that have different topologies.

Question 27

A communication port is a physical circuit through which data flows.

Question 28

Networks use more than one protocol, and the collection of protocols for a network is referred to as a protocol ________.

Question 29

A communication ______ is a virtual end point for data entering and leaving a digital device.

Question 30

Which network tier forms the Internet backbone?

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

Question 31

Two devices on a network negotiate their communication protocols through a process called ___________.

Question 32

The organization that supervises Internet addressing is ___________.

Question 33

Which type of communication protocol converts data into standard formats that can be used by applications?

A) Physical
B) Transport
C) Arrival
D) None of the above

Question 34

When connecting to the Internet, most Internet users connect to a Tier 1 network.

Question 35

UDP (User Datagram Protocol) is faster than TCP (Transmission Control Protocol) but does not perform error checking.

Question 36

On a network, any device that stores or generates data is considered to be a(n) _________.

A) router
B) DTE (data terminal equipment)
C) DCE (data communications equipment)
D) ATP (advanced threat protection)

Question 37

The organization that supervises Internet addressing is ARPANET.

Question 38

Any device in a network is called a(n) __________.

Question 39

_________ technology divides a message into several packets that can be routed independently to their destination.

A) Handshaking
B) Packet switching
C) Packet sniffing
D) Circuit switching

Question 40

Which DCE would you use if you wanted to extend a wired network by adding more ports?

A) Hub
B) Switch
C) Bridge
D) Repeater

Question 41

Domain name servers maintain lists of all domain names and their corresponding IP addresses.

Question 42

A domain name ends with a(n) ________ that indicates its top-level domain.

Question 43

Unauthorized changes to the DNS are called DNS ________.

Question 44

Internet addresses that are temporarily assigned are called ________ addresses.

Question 45

Connection speed is technically a measure of capacity.

Question 46

A Web site cannot be accessed by its domain name until the name is added to the domain name server lists.

Question 47

You may be able to bypass DNS outages by changing your DNS server.

Question 48

__________ uses 32-bit addresses to uniquely identify devices connected to the Internet.

Question 49

IP addresses can be assigned by a network administrator, but more commonly they are automatically assigned by _________.(Hint: Use the acronym.)

Question 50

When a router connects to and communicates over the Internet, it has a(n) ________ IP address that is routable over the Internet.

Question 51

The mechanism for tracking domain names and their corresponding IP addresses is called the ________.

Question 52

Internet addresses are controlled by which one of the following protocols?

A) TCP
B) IP
C) UDP
D) HTTP (Hypertext Transfer Protocol)

Question 53

Most Internet connections are symmetrical.

Question 54

Your bandwidth _________ is the top speed allowed by your ISP plan.

Question 55

__________ uses 128-bit addresses to uniquely identify devices connected to the Internet.

Question 56

A private IP address can be used to send data over the Internet.

Question 57

What organization is the top-level authority for supervising domain name requests?

A) DNS
B) HTTP
C) ISPs (Internet service providers)
D) ICANN (Internet Corporation for Assigned Names and Numbers)

Question 58

________ is utility software designed to measure responsiveness and availability of an Internet connection.

Question 59

Suppose you wanted to run a Web server or FTP server from your home.What type of IP address would you want?

A) Dynamic
B) Static
C) TCP
D) Broadband

Question 60

What type of Internet connection do you have when upload speed differs from download speed?

A) Dynamic
B) Asymmetric
C) Broadband
D) Symmetric

Question 61

________ is a wired network technology that is defined by IEEE 802.3 standards.

Question 62

_______ involves the use of high-capacity fiber-optic cables to connect homes to broader municipal networks.

Question 63

DSL is an example of what type of Internet access?

A) Mobile
B) Portable
C) Fixed
D) Wireless

Question 64

The circuitry that enables a device to access a LAN is called a(n) ________.

Question 65

A(n) ______ address is used to uniquely identify devices on LANs.

Question 66

Which type of broadband Internet access involves using cellular data networks?

A) Fixed
B) Portable
C) Mobile
D) Dial-up

Question 67

Most wireless LANs use licensed frequencies that require applying to the Federal Communications Commission (FCC) for permission.

Question 68

The maximum speed of a dial-up connection is _____ Kbps.

Question 69

A Wi-Fi ______ is a wireless local area network that provides Internet access to the public.

Question 70

__________ LANs are usually arranged in a star topology with computers wired to central switching circuitry that is incorporated in modern routers.

A) Internet
B) Ethernet
C) Wireless
D) Mobile

Question 71

LANs use many of the same network technologies as the Internet.

Question 72

DHCP assigns an IP address to a device and links it to the device's _______ address.

Question 73

_____________ is a network diagnostic tool that shows you each router and server that your data encounters as it travels over the Internet.

Question 74

A(n) ________ device transmits data as radio waves and is compatible with Ethernet, so you can use the two technologies in a single network.

Question 75

Mobile broadband can be used to access the Internet from a laptop or desktop computer.

Question 76

_______ is a high-speed, digital, always-on, Internet access technology that runs over standard phone lines.

Question 77

_______ are designed to provide connectivity for devices within a limited area, typically within the premises of a home, office building, business, or school.

A) WANs
B) PANs
C) LANs
D) BANs

Question 78

Which type of mobile broadband service has maximum download rates of 300 Mbps and upload rates of 75 Mbps?

A) TCP
B) ICANN
C) 3G
D) 4G

Question 79

On a network, _______ is the elapsed time for data to make a round-trip from point A to point B and back to point A.

Question 80

Packet loss of less than 2% is required for acceptable streaming, gaming, Skype, and voice calls.