terms
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| pan | consists of personal devices at close range such as a cell phone
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| lan | covers a small area such as a home or office
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| wlan | covers a limited geographical area and is popular in places where networking cableare difficult to install such as outdoors
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| man | covers a large campus or city
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| wan | covers a large geographical area and is made up of many smaller networks
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| bandwidth | the theoretical number of bits that can be transmitted over a network at one time,similiar to the number of lanes on a highway
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| internet service providers | earthlink comcast
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| ieee | creates standards for computer and electronic industries
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| tcp/ip | a group of protocols that control many different aspects of communication
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| isdn | an outdated broadband technology developed in the 1980s that uses regular phone lines and is accessed by a dialup connection
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| computer | when two or more computers communiate with each other
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| data throughput | actual speed of a network
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| latency | delay in network transmissions
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| broadband | networking technology that carries more then one signal such as dsl or telephone
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| packet | data segment
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| header | info at the beginning of the packet
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| trailer | info at the end of the packet
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| cable modem | converts pc digital signal to analog when sending them and converts incoming analog data to digital
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| dsl | group of broadband technologies that covers a wide range of speeds
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| dsl | uses ordinary copper phone lines and a range of frequencies on that copper wire that re not used by voice
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| adsl | uses one upload speed from the consumer to an isp and a faster download speed
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| sdsl | uses equal bandwiths in both directions
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| disadvantage of using satellite for an internet connection | delays in transmission
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| wireless networks | uses radio waves or infrared light instead of cables or wires to connect computers or ther devices
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| 802.11 | most popular technology for for wireless local networks
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| 802.11g | freguency range 2.4 ghz distance 100 meters
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| 802.11b | freguency range 2.4 ghz distance 100 meters
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| mimo | two or more atennas are used at both ends of transmission
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| 802.11n | compatible with 802.11b/g
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| 802.11n | can use the 5ghz range
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| 802.11a | works in the 5ghz range 50 meters
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| 802.11k | help manage connections between wireless devices and access points
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| 802.11k | defines how wireless network traffic can better be distributed over multiple access points covering a wide area so that the strongest signal is not overloaded
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| 802.11r | defines how a mobile wireless device can easily and quickly transition as it moves out of range from one access point snd into the range of another
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| 802.11d | designed to run in countries outside the united states
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| three main protocols for encryption for 802.11 networks | wep wpa wpa2
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| ssid | name of the wireless access point
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| mac address | six byte number that uniquely identifies a network adapter on a computer
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| 802.16d | wimax
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| 802.16e | supports up to 75 Mbps range of several miles uses 2 to 11 ghz frequency
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| base station | fixed transceiver and antenna
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| wpa2 | 802.11i standard
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| aes | advanced encryption standard
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| tkip encryption | temporal key integrity protocol
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| bluetooth | range of 10 meters 2.4 ghz range transfer data up to 3 mbps
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| gsm | uses att open standard that uses digital communication of data and accepted worldwide
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| cdma | used by cell phone providers in the us only
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| tdma | older outdated technology
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| full duplex | simultaneous send and receive at the same time
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| half duplex | only send or receive
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| point to point | send data packets over phone lines line protocol
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| dial up networking | plain old telephone service
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| modem standard | v92
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| cellular internet card | air card
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| air card | works like a cell phone to connect to a cellular wan to give you computer access
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| mobile satellite broadband | requires portable satellie dish
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| 100BaseT | an ethernet standard that operates at 100 Mbps and uses twisted pair cabling up to 100 meters-328 feet also called fast ethernet
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| 10Base2 | an outdated ethernet standard that operates at 10mbps and uses small coaxial cable up to 500 meters long.also called thinnet
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| 10Base5 | an outdated ethnernet standard that operates at 10Mbps and uses thick coaxial cable up to 500 meters long also called thicknet
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| 10BaseT | an ethernet standard that operates at 10mbps and uses twisted pair cables up to 100 meters or 328 feet
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| coaxial cable | single copper wire down the middle and a braided shield around it
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| fiber optic | transmits signals as pulses of light over glass strands inside protected tubing
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| fiber optic cable | single mode and multimode
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| ethernet cabling | unshielded and shielded twisted pair
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| ethernet types | 10mbps 100mbps 1000Mbps 10Gbps
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| fiber optic cables | straight tip standard connector local connector mechanical transfer rj
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| 1000Mbps | gigabit ethernet
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| 100BaseT | 100BaseTX and 100BaseFX
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| 100BaseFX | uses fiber optic cable
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| 100Mbps | fast Ethernet
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| twisted pair cable | most popular cabling for local networks
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| fiber optic | transmits signals as pulses of light over glass strands inside protective tubing
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| coaxial | single copper wire down the middle and a braided shield around it
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| 10Base2 | 185meters or 607 feet
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| 10Base5 | 500 meters or 607 feet
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| 10BaseT | 100 meters or 328 feet
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| hub | pass thru device tp connect nodes on a network
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| bus toplogy | nodes are all strung together in a daisy chain with terminators at each end
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| star topology | nodes are connected to a centralized hub or switch
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| switch | keeps a table of all devices connected to it
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| switch | uses a table to decide which path to use when sending packets
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| hub | no egard for data
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| network cables | patch cable or crossover table
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| patch cable | straight thru cable
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| patch cable | connects computer to hub or switch
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| hub | data overload because everyone gets the request or the data
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| ethernet hub | transmits the data packet to every device except the device that sent the transmission
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| crossover cable | used to connect two like devices such as a switch to a switch or a pc to a pc
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| hub | sends data to everyone
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| switch | sends data to specific people
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| patch cable | connect two different devices
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| crossover cable | connect two like devices
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| ad hoc mode | wireless devices commnicate directly pc to pc
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| router | device that manages traffic between two networks
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| router | gateway to the Internet
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| crossover | transmit and receiv lines are reversed
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| router | a device that connects one device to another
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| dhcp | dynamic host configuration protocol
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| dhcp server | gives ip addresses to computers on the network when they attempt to initiate a connection to the network and request an ip address
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| access points | provide coverage
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| wireless access points | allow wireless device connection to a lan
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| firewall | blocks unwanted traffic initiated from the internet
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| router | connection between two networks
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| nat | network address translation
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| nat | protocol that substitutes the ip address of the router for the ip address of other computers inside the network when these computers need to communicate on the internet
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| dynamic ip addressing | an assigned ip address used for the current session only,when the session is terminated , the ip address returns to a list of available addresses
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| dhcp server | provides ip addresses out to network computers
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| router functions | router switch dhcp server wireless access point firewall with or without nat redirection
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| port 20 | ftp
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| port 22 | ssh
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| port 23 | telne
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| port 25 | smtp
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| port 53 | dns
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| port 80 | http
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| port 110 | pop3
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| port 143 | imap
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| port 443 | https
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| port 3389 | rdp
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| client server applications | two computers and two applications are involved
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| server | any computer or application that brings up data when that data is requested
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| wireless access point | a computer can connect to the network using a wireless device
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| three levels where communication happens between a client and server application | hardware application operating system
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| protocols | predetermines rules for communicqtion
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| hardware level | root level of communication
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| ip address | a thirty two bit string used to identify a computer on the network
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| the largest possible bit number | two hundred and fifty five
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| two kinds of network addressing | static dynamic
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| static addressing | a unique IP address that never changes
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| dynamic addressing | each time the computer connects to the network it gets a new ip address from the dhcp server which is called leasing the address
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| ip address | used to identify a computer both inside and outside its local network
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| operating system | responsible for managing communication between itself and another computer using rules for communication that both operating systems understand
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| application level | when you use the internet to surf the web or download your email you need to use an
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| client | requests information
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| server | has information requested
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| hardware level | includes the mac address
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| port number | uniquely identifies an application on your computer
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| mac address | local address
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| ip address | long distance address
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| socket | endpoint of an inter-process communication flow across a computer network
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| application level | client communicationg with another application
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| socket | ip address followed by a colon and a port number
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| pop3 | post office protocol version 3 used by a client to receive mail
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| dns | domain name service used to find an ip address when a coomputers character based name is unknown
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| imap | stays on the server you can check your email from phone or internet and the email is always there
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| pop3 | deleted off the server as it is being sent to me it is the only copy
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| telnet | has no encryption
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| https | has encryption
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| ip address | 32 bits long made up of 4 bytes each 8 bits long
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| intranet | private network that uses he tcp/ip protocols
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| octet | eight bits
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| class A | 127 possibilities
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| class B | 16,000 possibilities
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| class C | 2 million possibilities
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| first part of an IP address | identifies the network
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| last part of an IP address | identifies the host
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| IPv4 | 32 bits
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| IPv6 | 128 bits
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| when data is routed over interconnected networks | the network portion of the ip address is used to locate the right network
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| after the data arrives at the local network | the host portion of the ip address is used to identify the one computer on the network that is to receive the data
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| ICANN | responsible for keeping track of assigned ip addresses and domain names
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| class D | multicasting
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| class d | octets 224 thru 239
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| class e | research
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| class e |
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| subnet mask | tells the os which part of an ip address is the network portion and which part is the host
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| subnet mask | a computer or other device can know if an ip address of another computer is on its network or another network
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| classful subnet masks | contain all ones or all zeros
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| classless subnet mask | contains a mix of ones and zeros
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| public ip addresses | ip addresses available on the internet
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| private ip addresses | ip addresses not available on the internet
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| cidr | classless interdomain routing
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| nat redirection | the device substitutes its own public ip address for the private ip address of a computer behind the firewall
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| apipa | automatic private ip adress
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| dynamic ip address | assigned for current connection only
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| dhcp server | manages dynamically assigned ip adresses on a network
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| dhcp clients | workstations that work with dhcp servers
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| apipa | automatic private ip address
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| apipa | an ip address used by a computer when it cannot successfully lease an ip address from a dhcp server
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| host name | computer name
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| host name | name of a computer and can be used in place of its ip address
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| netbios | network basic input output system
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| netbios name | can be up to 15 characters
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| netbeui | windows networking protocol
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| domain name | identifies a network
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| fully qualified domain name | identifies a computer and the network to which it belongs
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| name resolution | the process of associating a character based name with an ip address
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| apipa address that means there is a network problem somewhere | 169.254.x.y.
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| apipa address | can still have a peer to peer network
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| domain name system | domain name service
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| domain name system | the protocol and service used to track these character based names with ip addresses
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| chracter based names | substitute for ip addresses
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| netbios name | a fifteen character name used on legacy system
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| dns server | finds ip address when fdqn known
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| hosts file | contains computer names and their associated ip addresses on the local network
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| http | protocol used for the www and is used by web browsers and servers to communicate
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| wins | windows internet naming service
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| wins | used to track netbios names
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| https | protocol used by web browsers and servers to encrypt the data before it is sent and then decrypt it before the data is processed
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| ftp | transfers files between two computers
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| api | application programming interface
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| api | the way applications ask the operating system to do something
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| smtp | used to send an email to a recipients mail server
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| smtp auth | protocol is used to authenticate a user to an email server when the email client first tries to connect to the email server to send email
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| pop3 or imap4 | used to download email to the client
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| ping | packet internet groper
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| ping | tests connectivity by sending an echo request to a computer
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| ipconfig | can display tcp ip configuration and refresh the ip address
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| telnet | a user connects to a remote computer and controls it through the command prompt window
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| tcp and udp | control communication on the network
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| imap | leaves a copy on the server
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| pop3 | look at it and it is gone
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| tcp | guarantees packet delivery
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| udp | no guarantee of delivery
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| tcp | connection oriented protocol
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| udp | connectionless protocol
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| tcp | makes a connection checks whether the data was received and if not it resends
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| udp | best effort protocol primarily used for broadcasting
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| udp | does not check if the connection checks whether the data was received and if not it resends
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| arp | address resolution protocol
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| arp | locating a host on a local network
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| rarp | discovering internet address on a local network
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| telnet | allows user connection to a remote computer
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| ping -a | tests for name resolution
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| ping -t | pings until it is interrupted
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| ping 127.0.0.1 | loopback address
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| ping -l | changes the size of the data packet sent with the ping
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| ipconfig /all | displays tcp ip information
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| ipconfig /release | release the ip address
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| ipconfig /renew | lease a new address from a dhcp server
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| ipconfig /displaydns | displays info about name resolutions that windows currently hold in the dns resolver cache
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| vpn | secures private data traveling over a public network
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| vpn tunneling protocols | pptp L2tp ssl ipsec
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| point to point protocol | weakest protocol
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| strongest tunneling protocol | layer two tunneling protocol over ipsec
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| subnet mask | group of four dotted decimal numbers that tells tcp ip if a computers ip address is on the same network
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| gateway | device that allows a computer on one network to communicate with another network
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| default gateway | is the gateway a computer uses to access another network if it does not have a better option
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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