ELRO CR1 WLAN Repeater USERS MANUAL User Manual
Page 81

802.11n WiFi Repeater
User’s Manual
81
such as software, files, etc. A network can be small, such as 
a LAN, or very large, such as the Internet. 
network mask
A network mask is a sequence of bits applied to an IP 
address to select the network ID while ignoring the host ID. 
Bits set to 1 mean "select this bit" while bits set to 0 mean 
"ignore this bit." For example, if the network mask 
255.255.255.0 is applied to the IP address 100.10.50.1, the 
network ID is 100.10.50, and the host ID is 1. See binary, IP 
address, subnet. 
NIC
Network Interface Card 
An adapter card that plugs into your computer and provides 
the physical interface to your network cabling. For Ethernet 
NICs this is typically an RJ-45 connector. See Ethernet, RJ-
45. 
packet
Data transmitted on a network consists of units called 
packets. Each packet contains a payload (the data), plus 
overhead information such as where it came from (source 
address) and where it should go (destination address). 
ping
Packet Internet (or Inter-Network) Groper 
A program used to verify whether the host associated with an 
IP address is online. It can also be used to reveal the IP 
address for a given domain name.  
port
A physical access point to a device such as a computer or 
router, through which data flows into and out of the device. 
PPP
Point-to-Point Protocol 
A protocol for serial data transmission that is used to carry IP 
(and other protocol) data between your ISP and your 
computer. The WAN interface on the device uses two forms 
of PPP called PPPoA and PPPoE. See PPPoA, PPPoE. 
PPPoA
Point-to-Point Protocol over ATM 
One of the two types of PPP interfaces you can define for a 
Virtual Circuit (VC), the other type being PPPoE. You can 
define only one PPPoA interface per VC. 
PPPoE
Point-to-Point Protocol over Ethernet 
One of the two types of PPP interfaces you can define for a 
Virtual Circuit (VC), the other type being PPPoA. You can 
define one or more PPPoE interfaces per VC. 
protocol
A set of rules governing the transmission of data. In order for 
a data transmission to work, both ends of the connection 
have to follow the rules of the protocol. 
remote
In a physically separate location. For example, an employee 
away on travel who logs in to the company’s intranet is a 
remote user. 
RIP
Routing Information Protocol 
The original TCP/IP routing protocol. There are two versions 
of RIP: version I and version II.  
RJ-11
Registered Jack Standard-11 
The standard plug used to connect telephones, fax 
machines, modems, etc. to a telephone port. It is a 6-pin 
connector usually containing four wires. 
RJ-45
Registered Jack Standard-45 
The 8-pin plug used in transmitting data over phone lines. 
Ethernet cabling usually uses this type of connector. 
