Deck 3: Networks

Question 1

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

Answer 1

transceiver​

Question 2

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

Answer 2

Bandwidth​

Question 3

Microwaves have more carrying capacity than radio waves.​

Answer 3

True

Question 4

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

Question 5

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

Question 6

Which type of cables are 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 7

When interference affects a wireless signal, data must be re-transmitted.​

Question 8

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
B)​LAN
C)​WAN
D)​VPN

Question 9

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

Question 10

Which type of network cover 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 11

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

Question 12

The most widespread wireless channels for communication networks are microwaves and RF signals.​

Question 13

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

Question 14

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

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

Question 15

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 16

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 17

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

Question 18

The Internet is the world's largest WAN.​

Question 19

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

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

Question 20

Which of the following is an advantage of wired connection?​

A)​more secure
B)​more dependable
C)​faster speeds
D)​all of the above

Question 21

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

Question 22

Data cannot flow over multiple networks that have different topologies.​

Question 23

The organization that supervises Internet addressing is ARPANET.​

Question 24

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 25

Which of the following is an example of a DCE?​

A)​router
B)​modem
C)​hub
D)​all of the above

Question 26

_________ 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 27

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 28

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

Question 29

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

Question 30

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

Question 31

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

Question 32

Which network tier forms the Internet backbone?​

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

Question 33

The organization that supervises Internet addressing is ___________.​

Question 34

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

Question 35

​UDP is faster than TCP 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
C)​DCE
D)​ATP

Question 37

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

Question 38

Networks that form the Internet are maintained by who?​

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

Question 39

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

Question 40

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

Question 41

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

Question 42

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

Question 43

Internet addresses that are temporarily assigned are called ________ addresses.​

Question 44

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

Question 45

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

A)​TCP
B)​IP
C)​UDP
D)​HTTP

Question 46

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

Question 47

IP addresses can be assigned by a network administrator, but more commonly they are automatically assigned by _________.​

Question 48

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

Question 49

Unauthorized changes to the DNS are called DNS ________.​

Question 50

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

Question 51

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

Question 52

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

A)​DNS
B)​HTTP
C)​ISPs
D)​ICANN

Question 53

Connection speed is technically a measure of capacity.​

Question 54

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

Question 55

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

Question 56

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

Question 57

Most Internet connections are symmetrical.​

Question 58

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

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

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

Question 62

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

Question 63

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 64

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

Question 65

Most wireless LANs use licensed frequencies that require applying to the FCC for permission.​

Question 66

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

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

Question 67

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

Question 68

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

Question 69

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

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

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 72

_______ 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 73

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

Question 74

A ______ address is used to uniquely identify devices on LANs.​

Question 75

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

Question 76

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

Question 77

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

Question 78

DSL is an example of what type of Internet access?​

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

Question 79

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

Question 80

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