Computer Concepts Chapter 3

Wi-Fi

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

channel

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

Fixed

DSL is an example of what type of Internet access?

False

Data cannot flow over multiple networks that have different topologies

True

Dropbox is an example of a file hosting service

DHCP

IP adresses can be assigned by a network administrator, but more commonly they are automatically assigned by

transceiver

In a wireless network, RF signals are sent and received by an _____

IP

Internet addresses are controlled by which one of the following protocols? a. HTTP b. IP c. TCP d. UDP

dynamic

Internet addresses that are temporarily assigned are called _______ addresses

True

LANS use many of the same network technologies as the Internet

True

Microwaves have more carrying capacity than radio waves

False

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

broadband

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

latency

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.

packet

Parcels of data that are sent over network are called ___________

True

The Internet is the worlds largest WAN

bits

The bandwidth of a channel that carries digital data is usually measured in ______ per second

spoofing

Unauthorized changes to the DNS are called DNS __________

True

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

all of the above

Which of the following is an advantage of wired connection? a. faster speeds b. more dependable c. more secure d. all of the above e. none of the above

True

Wi-Fi signals may reach up to 300 feet from the router

802.11ac

Wich wireless standard is faster: 802.11n or 802.11ac?

5

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.

topology

in the context of communication networks, the term ______ refers to the structure and layout of network components

protocol

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

FTTH

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

DSL

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

Traceroute

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

Ethernet

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

Ping

is utility software designed to measure responsiveness of Internet connection

True

most Internet connections are symmetrical

discovery

network _______ enables your computer to see other devices on a network, and whether your computer can be seen by others

ISP's

networks that form the internet are maintained by who

DTE

on a network, any device that stores or generates data is consider to be a

TCP

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?

True

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

Permissions

specify how shared files can be used

static

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

IoT

the _______ connects active sensors and passive tags to communication networks

56

the maximum speed of a dial up connection is ____ Kbps

False

the organization that supervises Internet addressing is ARPANET

ARPANET

the organization that supervises Internet addressing is ________

handshaking

two devices on a network negotiate their communication protocols through a process called

IPv6

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

ICANN

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

Asymmetric Connection

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

public

when a router connects to and communicates over the Internet, it has an public IP address that is routable over the internet

Hub

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

BitTorrent

which file sharing protocol distributes the role of a file server across a collection of dispersed computers

Tier 1

which network tier from the internet backbone

all of the above

which of the following is an example of a DCE? a. hub b. modem c. router d. all of the above e. none of the above

mobile

which type of broadband internet access involved using cellular data networks?

4G

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

Fiber-optic cables

which type of cables are used for high capacity trunk lines that provide main routes for telephone, cable, and Internet communications

Arrival

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

PAN

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

WAN

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

Mesh

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

Star

which type of network topology connections multiple devices to a central device?

Point-to-point

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

FTP

which type of protocol provides a way to transfer files from one computer to another over any TCP/IP network, such as a LAN or the Internet.

encryption key

wireless __________ scrambles the data transmitted between wireless devices

Cap

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

Packet Switching

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

Ethernet

_________ LANS are usually arrange in a star topology with computers wired to central switching circuitry that is incorporated in modern routers

Bandwidth

___________ is the term for transmission capacity of a communication channel

hotspot

a wi-fi _____ is a wireless local area network that drives internet access to the public

SSID

an ________ is the broadcasted name of a wireless network

node

any device in a network is called an ________

LANs

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

True

connection speed is technically a measure of capacity