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chpt 10 terms
chpt 10 vocabulary
| Question | Answer |
|---|---|
| whois | utility that allows you to query ICANN's DNS registration database and find info about the domain |
| tracepath | version of the traceroute utility found on some Linux |
| traceroute | TCI/IP utility that uses ICMP to trace the path from one network node to another,identifying all hopss between the two nodes |
| traceroute | useful for determining router or subnet connectivity problems |
| supernet mask | a 32 bit number that,when combined with a devices IP address,indicates the kind of supernet to which the device belongs |
| static network address translation | a type of address translation in which each private IP address is correlated with its own Internet recognized IP address |
| simple mail transfer protocol | application layer tcp/ip subprotocol responsible for moving messages from one email server to another |
| route | a utility for viewing or modifying a hosts routing table |
| public network | a network that any user can access with no restrictions.internet is the most familiar example |
| private network | a network whose access is restricted to only clients with proper credentials |
| post office protocol version 3 | most commonly used version of pop |
| post office protocol | an application layer protocolused to retreive messages from a mail server. |
| pop3 | when a client retreives mail,messages previously stored on the mail server are downloaded to the clients workstation and then deleted from the server |
| pathping | a command line utility that combines the functionality of the tracert and ping commands |
| port address translation | a form of addressing translation that uses TCP port numbers to distinguish each clients transmission,thus allowing multiple clients to share a limited number of internet-recognized IP addresses |
| nslookup | a tcp/ip utility that allows you to look up the DNS host name of a network node by specifying its IP address or vice-versa |
| nslookup | useful for verifying that a host is configured correctly and for troubleshooting DNS resolution problems |
| netstat | a tcp/ip troubleshooting utility that displays statistics and the state of the current tcp/ip connections.displays ports,which can signal whether services are using the correct path |
| netbios | a protocol that runs in the session and transport layers of the osi model and associates netbios names with workstations |
| netbios | is not routable because it does not contain network layer information |
| nbstat | a tcp/ip troubleshooting utility that provides information about netbios names and their addresses. |
| network address translation | a technique in which ip addresses used on a private network are assigned a public address by a gateway when accessing a public network |
| my trace route mtr | a route discovery and analysis utility that comes with unix and linux operating systems |
| mtr | combines the functions of the ping and traceroute commands and delivers an easily readable chart as its output |
| multipurpose internet mail extension | a standard for encoding and interpreting binary files,images,video, and non ascii character sets with an email message |
| internet message access protocol | a mail retreival protocol that improves on the shortcomings of pop. |
| imap | it allows users to store messages on the server rather then having to download them to their local machine |
| internet connection sharing host | on a network using microsoft ,the computer whose internet connection other computers share |
| internet connection sharing | a service that allows one computer,the ics host,to share its internet connection with other computers on the same network |
| hostname | a tcp/ip utility used to show or modify a clients host name |
| host | a tcp/ip utility that at its simplest returns either the ip address of a host if its host name is specified or its host name if its ip address is specified |
| extended network prefix | the combination of an ip's address's network id and subnet information |
| extended network prefix | a device can determine the subnet to which an address belongs |
| dynamic network address translation | a type of address translation in which a limited pool of internet valid ip addresses is shared by multiple private network hhosts |
| domain information groper | a tcp/ip utillty that queries the dns database and provides information about a host given its ip address or vice versa. |
| dig | similiar to the nslookup utility,but provides more information,even in its simplest form,than nslookup can |
| default gateway | first interprets a devices outbound request and then interprets its inbound requests to and from other subnets |
| core gateway | operates on the internets backbone |
| classful addressing | convention that adheres to network class distinction |
| class A | first 8 bits |
| class B | first 16 bits |
| class c | first 24 bits |
| cidr notation | a method of denoting network id's and their subnet boundaries |
| cidr block | the number of bits used for an extended prefix |
| cidr notation | slash |
| classless interdomain routing | an ip addressing and subnetting method |
| cidr | network and host information is manipulated without adhering to the limitations imposed by traditional network class distinctions |
| cidr | supernetting |
| route command | allows you to view a hosts routing table and add,delete or modify preferred routes |
| nslookup utility | more flexible version of the host command |
| ifconfig | utility that establishes and allows management of the tcp/ip settings on a unix or linux system |
| nat | gateways assign transmissions valid internet ip addresses to be shared by multiple clients |
| dnat | allows one or more internet recognized ip addresses to be shared by multiple clients |
| snat | establishes a one to one correlation between each private ip address and internet recognized ip addresses |
| subnet mask | provides clues about the location of network information in an ip address. |
| subnet a network | simpler troubleshooting,enhanced network security,improved performance,and easier network management |
| subnetting | seperates one network or segment into multiple logically defined segments |
| -c | count mtr |
| -r | generate a report mtr |
| -n | display only ip addresses and not host names mtr |
| -i | specify a period of time mtr |
| -d | not resolve ip addresses to host names tracert |
| -h | maximum number of hops tracert |
| -w | timeout period for responses wait time tracert |
| -a | name of the machines table given its netbios name nbstat |
| -A | machines name table given its ip address nbstat |
| -r | useful for determining whether a workstation is resolving names properly or for determining whether wins is operating properly nbstat |
| -s | list of all current netbios sessions for a machine.attempts to resolve ip addresses to netbios names in the listing nbstat |
| -a | list of all available tcp and udp connections netstat |
| -e | display details about all the packets that have been sent over a network connection netstat |
| -n | lists currently connected hosts according to their port and ip address netstat |
| -p | allows you to specify what tyhpe of protocol statistics to list netstat |
| -r | list of routing table information netstat |
| -s | statistics about each packet transmitted by a host,seperated according to protocol type netstat |
| -a | applies the command to all interfaces on the device ifconfig unix linux |
| down | marks the interface as unavailable to the network ifconfig unix linux |
| up | reinitializes the interface after it has been taken down to make it available to the network ifconfig linux unix |
| /renew | renews dhcp assigned addresses for all of the devices network interfaces ipconfig |
| /release | releases dhcp assigned addressesw for all of the devices networks ipconfig |
| /all | displays complete tcp/ip configuration information for each network interface on that device ipconfig |
| /? | list of switches available for use with the ipconfig command |
Created by:
cgeaski
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