ANSWERS RATED A+
✔✔Network Topology - ✔✔The physical structure of a network including its devices and
connections.
✔✔Network Node - ✔✔In a network, a connection point; in a hierarchical database, a
segment or record type.
✔✔Modem - ✔✔A device that modulates and demodulates a signal; typically used to
send data from a computer to the Internet over telephone, cable television, or satellite
networks.
✔✔TCP/IP - ✔✔Internet Protocol) One of the main protocols of TCP/IP; responsible for
addressing packets so that they can be routed to their destinations; IPv4 offers 32-bit
addresses whereas IPv6 offers 128-bit addresses.
✔✔Private IP Address - ✔✔An IP address that cannot be routed over the Internet
✔✔Public IP Address - ✔✔IP addresses that can be routed over the Internet
✔✔DNS - ✔✔(domain name system)
A large database of unique IP addresses that correspond to domain names.
✔✔Symmetric Connection - ✔✔Any connection to the Internet in which the upstream
speed is the same as the downstream speed.
✔✔Asymmetric Connection - ✔✔A network connection in which the download capacity
is different from (usually faster than) the upload capacity.
✔✔LAN - ✔✔Local area networks are often referred to as LANs. They are designed to
provide connectivity for devices within a limited area, typically within the premises of a
home, office building, business, or school.
✔✔NIC - ✔✔network interface controller
Circuitry, often on an expansion card mounted inside a computer, that transmits and
receives data on a local area network. Also called a NIC, network card, or network
adapter.
✔✔Ethernet - ✔✔A popular network technology in which network nodes are connected
by coaxial cable or twisted-pair wire.
✔✔Communications Protocols - ✔✔A set of rules that ensures the orderly and accurate
transmission and reception of data.
, ✔✔Physical - ✔✔Specify cable and signal standards for the channels that carry data
✔✔Transport - ✔✔Make sure data gets to its destination by establishing standards for
dividing data into chunks, assigning addresses, and correcting errors
✔✔Arrival - ✔✔Convert data into standard formats that can be used by applications,
such as email, Web browsers, and Skype
✔✔ARPANET - ✔✔(Advanced Research Projects Agency Network) One of the first
packet switching computer networks using TCP/IP, and the prototype for the Internet.
✔✔IXP - ✔✔IXPs) Nodes on the Internet where data from one service provider is
transferred to a different service provider.
✔✔Latency - ✔✔The elapsed time it takes for a packet of data to arrive at its
destination.
✔✔Packet - ✔✔A small unit of data transmitted over a network.
✔✔Circuit Switching - ✔✔The method used by the telephone network to temporarily
connect one telephone with another for the duration of a call.
✔✔Packet Switching - ✔✔A technology used by data communications networks, such
as the Internet, where a message is divided into smaller units called packets for
transmission.
✔✔Jitter Loss - ✔✔Deviations in the timing of a digital signal that can interfere with
communications, especially voice over IP
✔✔Packet Loss - ✔✔A situation in which data bits are lost in transit, requiring them to
be resent, which significantly increases the time required for an intact message to arrive
at its destination.
✔✔Internet Connection (FIXED) - ✔✔Any Internet access service designed to be used
from a fixed, non-portable location (for example, dial-up, DSL, and cable Internet
service).
✔✔Portable - ✔✔• Any type of Internet service, such as portable satellite, that can be
moved from one place to another.
✔✔Mobile - ✔✔Any service that allows subscribers to access the Internet while on the
go.