Network + Vocabulary

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Network + Vocabulary

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An implementation of Ethernet that specifies a 10 Mbps (megabits per second) signaling rate, baseband signaling, and fiber-optic cabling
An implementation of Ethernet that specifies a 10 Mbps signaling ratre, baseband signaling, and twisted-pair cabling
Access Control List (ACL)
List of rights that an object has to resources in the network. Also a type of firewall. In this case, the lists reside on a router and determine which machines can use the router and in what direction.
Active Directory
The replacement for NT Directory Service (NTDS) that is included with Windows 2000 and 2003. It acts similarly to Novell Directory Services (NDS) because it is a true X.500-based directory service.
active hub
A hub that is powered and actively regenerates any signal that is received.
active monitor
Used in Token Ring networks, a process that prevents data frames from roaming the ring unchecked. If the frame passes the active monitor too many times, it is removed from the ring. Also ensures that a token is always circulating the ring
Technically, the peripheral hardware that installs into your computer or the software that defines how the computer talks to that hardware.
Designation to allow PC's to be known by a name or number to other PC's. Addressing allows a PC to transmit data directly to aqnother PC by using its address (IP or MAC)
address record
Part of a DNS table that maps an IP address to a domain name. Also known as an A (or host) record.
Address Resolution Protocol (ARP)
The Network layer protocol that IP uses to ascertain the MAC address of a known IP address when IP determines that the destination is on the local subnet and communication with the destination must therefore occur at the Data Link layer.
ad hoc RF network
A network created when two RF-capable devices are brought within transmission range of each other. A common example is handheld PDAs bearing data to each other.
A category of slftware that uses various methods to eliminate viruses in a computer. It typically also protects against future infection
The Macintosh server implementation of the AppleTalk Filing Protocol (AFP)
Application layer
The seventh layer of the OSI model, it deals with how applications access the network and describes application functionality, such as file transfer, messaging, and so on
ARP table
A table used by the Address Resolution Protocol (ARP). Contains a list of known TCP/IP addresses and their associated MAC addresses. The table is cached in memory so that ARP lookups do not have to be performed for frequently accessed TCP/IP addresses but aged out so that associations do not become stagnant.
asymmetrical digital subscriber line (ADSL)
An implementation of DSL, where the upload and download speeds are different,
Asynchronous Transfer Mode (ATM)
A connection-oriented network archetecture based on broadband ISDN technology that uses constant size 53-byte cells instead of packets. Because cells don't change size, they are switched much faster and more efficiently than packets across a network.
Attachment Unit Interface (AUI) port
Port on some NICs that allows connecting the NiC to different media types by using an external transceiver.
The part of most networks that connects multiple segments together to form a LAN. The backbone usally has higher speed than the segments.
backup plan
Term used to describe a company's strategy tomake copies of and restore its data in case of an emergency.
backup window
The amount of time that an administrator has available to perform a complete, successful backup.
In network communications, the amount of data that can be sent across a wire in a given time. Each communication that passes along the wire decreases the amount of available bandwidth.
A transmission technique in which the signal uses the entire bandwidth of a transmission medium.
A category of network documentation that indicates how the network normally runs. It includes such information as network statistics, server utilization trends, and processor performance statistics.
bearer channel (B channel)
The channels in an ISDN line that carry data. Each bearer channel typically has a bandwidth of 64Kbps
A hexadecimal value computed from transmitted data that is used in error-checking routines
circuit switching
A switching method where a dedicated connection between the sender and receiver is maintained throughout the conversation. POTS and ISDN, for example, establish circuit-switched connections through dialed numbers
Relates to the default characteristics of and constraints placed on an IP address based on the class of address in question. For example, a Class C address, by default, has 24 network bits and i host bits, limiting it to no more than 254 hosts per network. Classful defaults are considered in the absence of detailed configuration informattion, such as a nondefault subnet mask.
Classless Interdomain Routing (CIDR)
The new routing method used by InterNIC to assign IP addresses, CIDR can be described as a "slashx" network. The x represents the number of bits in the network that InterNIC controls.
A client is a part of a client/server network. It is the part where the computing is usually done. In a typical setting, a client will use the server for remote storage, backups, or security such as a firewall.