Computer Concepts Chapter 3

connection speed is technically a measure of capacity

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

most Internet connections are symmetrical

DSL is an example of what type of Internet access?

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

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

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

is utility software designed to measure responsiveness of Internet connection

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.

Microwaves have more carrying capacity than radio waves

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

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

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

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

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

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

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.

___________ is the term for transmission capacity of a communication channel

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

LANS use many of the same network technologies as the Internet

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

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

The Internet is the worlds largest 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

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

Data cannot flow over multiple networks that have different topologies

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

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

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

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

the organization that supervises Internet addressing is ARPANET

the organization that supervises Internet addressing is ________

Dropbox is an example of a file hosting service

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.

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

Unauthorized changes to the DNS are called DNS __________

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

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

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

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

which network tier from the internet backbone

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?

networks that form the internet are maintained by who

Parcels of data that are sent over network are called ___________

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

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

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

any device in a network is called an ________

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

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

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

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

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

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

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

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

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

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

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

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

Internet addresses that are temporarily assigned are called _______ addresses

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

an ________ is the broadcasted name of a wireless network

wireless __________ scrambles the data transmitted between wireless devices

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

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

the maximum speed of a dial up connection is ____ Kbps

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

specify how shared files can be used

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

the _______ connects active sensors and passive tags to communication networks