Network + Acronyms

Front 1

ACL

Back 1

Access Control List
A list of users, or groups of users, who are permitted to access a resource, as well as the degree of access each user or group is permitted

Hint 1

Access Control List

Front 2

AD

Back 2

Active Directory

a technology created by Microsoft that provides a variety of network services, including: LDAP-like directory services, Kerberos based authentication and DNS based naming

Hint 2

Active Directory

Front 3

ADSL

Back 3

Asymmetric Digital Subscriber Line

A point–to–point,digital WAN technology that uses standard telephone lines to provide consumers withhigh–speed Internet access, remote LAN access, another services. The term“asymmetric” refers to the fact that the service provides a higher transmissionrate for downstream than for upstream traffic. Downstream transmission ratescan be up to 8.448 Mbps, whereas upstream rates range up to 640 Kbps.

Hint 3

Asymmetric Digital Subscriber Line

Front 4

AH

Back 4

Authentication Header

Oneof the protocols used by IPsec to protect data as it is transmitted over thenetwork. AH provides authentication, anti–replay, and data integrity services,but it does not encrypt the data

Hint 4

Authentication Header

Front 5

ARP

Back 5

Address Resolution Protocol

Adata–link layer protocol that resolves IP addresses into hardware addresses.

Hint 5

Address Resolution Protocol

Front 6

ATM

Back 6

Asynchronous Transfer Mode

A network communications technology based on53–byte cells, designed to carry voice, data, and video traffic over LANs andWANs at speeds ranging from 25.6 Mbps to2.46 Gbps

Hint 6

Asynchronous Transfer Mode

Front 7

BERT

Back 7

Bit-Error Rate Test

testing method for digital communication circuits that uses predetermined stress patterns comprising of a sequence of logical ones and zeros generated by a pseudorandom binary sequence.

Hint 7

Bit-Error Rate Test

Front 8

BootP

Back 8

Boot Protocol /Bootstrap Protocol

A UDP network protocol used by a network client to obtain its IP address automatically (similar to DHCP but less complex). This is usually done during the bootstrap process when a computer is starting up.

Hint 8

Boot Protocol /Bootstrap Protocol

Front 9

BRI

Back 9

Basic Rate Interface

An Integrated Services Digital Network (ISDN) service thatconsists of two64-Kbps B channels plus one 16-KbpsD channel, enablingusers to combine the B channelsfor a single128-Kbps data pipe or use them separately.Also called 2B+D,BRI is the primary consumer ISDNservice used forInternet access and remote networking.

Hint 9

Basic Rate Interface

Front 10

CHAP

Back 10

Challenge Handshake Authentication Protocol

An authentication scheme used by Point to Point Protocol (PPP) servers to validate the identity of remote clients. It periodically verifies the identity of the client by using a three-way handshake.

Hint 10

Challenge Handshake Authentication Protocol

Front 11

CIFS

Back 11

Common Internet File System

similar to SMB, it operates as an application-level network protocol mainly used to provide shared access to files, printers, serial ports, and miscellaneous communications between nodes on a network.

Hint 11

Common Internet File System

Front 12

CNAME

Back 12

Canonical Name

Alias of one name to another: the DNS lookup will continue by retrying the lookup with the new name. This helps when running multiple services (like an FTP and a webserver; each running on different ports) from a single IP address

Hint 12

Canonical Name

Front 13

CSMA / CD

Back 13

Carrier Sense Multiple Access / Collision Detection

Using this protocol, a node that wants to transfer data over the network first listens to the LAN to determine whether it is in use. If the LAN is not in use, the node begins transmitting its data. If the network is busy, the node waits for the LAN to clear for a predetermined time, and then it takes control of the LAN. If two nodes are waiting to use the LAN, they will periodically attempt to access the LAN at the same time. When this happens, a data collision occurs, rendering the data from both nodes useless.

Hint 13

Carrier Sense Multiple Access / Collision Detection

Front 14

CSU

Back 14

Channel Service Unit

A line bridging device for use with T-carrier that is used to perform loopback testing

Hint 14

Channel Service Unit

Front 15

DC

Back 15

Domain Controller

server that responds to security authentication requests (logging in, checking permissions, etc.) within the Windows Server domain.

Hint 15

Domain Controller

Front 16

DLC

Back 16

Data Link Control

the service provided by the data link layer.

Hint 16

Data Link Control

Front 17

DSU

Back 17

Data Service Unit

a piece of telecommunications circuit terminating equipment that transforms digital data between telephone company lines and local equipment.

Hint 17

Data Service Unit

Front 18

EAP

Back 18

Extensible Authentication Protocol

universal authentication framework frequently used in wireless networks and Point-to-Point connections.

Hint 18

Extensible Authentication Protocol

Front 19

EFS

Back 19

Encrypting File System

a file system driver that provides filesystem-level encryption in Microsoft Windows (2000 and later) operating systems, except Windows XP Home Edition, Windows Vista Basic, and Windows Vista Home Premium.

Hint 19

Encrypting File System

Front 20

FDDI (fiddy)

Back 20

Fiber Distributed Data Interface

provides a high-speed backbone for data transmission in a local area network that can extend in range up to 200 kilometers (124 miles). its protocol is derived from the IEEE 802.4 token bus timed token protocol. Uses single and mulitmode fiber, dual-ring architecture, 100mbps

Hint 20

Fiber Distributed Data Interface

Front 21

FDM

Back 21

Frequency Division Multiplexing

used by broadband, a form of signal multiplexing which involves assigning non-overlapping frequency ranges to different signals or to each "user" of a medium.

Hint 21

Frequency Division Multiplexing

Front 22

FHSS

Back 22

Frequency Hopping Spread Spectrum

In spread spectrum transmissions, the frequency of the radio signal hops in a random, defined sequence that is known to the receiving device. This method spreads the signal across the time spectrum using time division multiplexing (TDM) techniques.

Hint 22

Frequency Hopping Spread Spectrum

Front 23

GBIC

Back 23

Gigabit Interface Converter

a standard for transceivers, commonly used with Gigabit Ethernet and fibre channel. By offering a standard, hot swappable electrical interface, one gigabit ethernet port can support a wide range of physical media, from copper to long-wave single-mode optical fiber, at lengths of hundreds of kilometers.

Hint 23

Gigabit Interface Converter

Front 24

GPO

Back 24

Group Policy Object

what a set of Group Policy settings are stored in. It reduces the administrative burden and costs associated with managing these resources

Hint 24

Group Policy Object

Front 25

GSNW

Back 25

Gateway Services for NetWare

allows Microsoft networking clients to access files that reside on NetWare servers w/o having to load NetWare client software

Hint 25

Gateway Services for NetWare

Front 26

HDLC

Back 26

High-Level Data Link Control

a bit-oriented synchronous data link layer protocol used almost exclusively to connect one device to another, developed by the International Organization for Standardization (ISO).

Hint 26

High-Level Data Link Control

Front 27

IANA

Back 27

Internet Assigned Numbers Authority

the entity that oversees global IP address allocation, root zone management for the Domain Name System (DNS) , media types, and other Internet protocol assignments.

Hint 27

Internet Assigned Numbers Authority

Front 28

ICA

Back 28

Independent Computer Architecture

designed by Citrix, the protocol lays down a specification for passing data between server and clients, but is not bound to any one platform.

Hint 28

Independent Computer Architecture

Front 29

ICMP

Back 29

Internet Control Message Protocol

one of the core protocols of the Internet Protocol Suite. It is chiefly used by networked computers' operating systems to send error messages—indicating, for instance, that a requested service is not available or that a host or router could not be reached

Hint 29

Internet Control Message Protocol

Front 30

ICS

Back 30

Internet Connection Sharing

It makes use of DHCP and Network address translation (NAT). It routes TCP/IP packets from a small LAN to the Internet.

Hint 30

Internet Connection Sharing

Front 31

IEEE

Back 31

Institute of Electrical and Electronics Engineers an international non-profit, professional organization for the advancement of technology related to electricity.

Hint 31

Institute of Electrical and Electronics Engineers

Front 32

IGMP

Back 32

Internet Group Multicast Protocol

a communications protocol used to manage the membership of Internet Protocol multicast groups. IGMP is used by IP hosts and adjacent multicast routers to establish multicast group memberships.

Hint 32

Internet Group Multicast Protocol

Front 33

IIS

Back 33

Internet Information Services

a set of Internet-based services for servers created by Microsoft for use with Microsoft Windows. It is the world's second most popular web server in terms of overall websites behind the industry leader Apache HTTP Server. The servers currently include FTP, SMTP, NNTP, and HTTP/HTTPS.

Hint 33

Internet Information Services

Front 34

IKE

Back 34

Internet Key Exchange

is the protocol used to set up a security association (SA) in the IPsec protocol suite.

Hint 34

Internet Key Exchange

Front 35

IMAP

Back 35

Internet Message Access Protocol

advantages over POP3: When using it, clients often stay connected as long as the user interface is active and download message content on demand. Plus access to MIME message parts and partial fetch

Hint 35

Internet Message Access Protocol

Front 36

IP

Back 36

Internet Protocol

is the primary protocol in the Internet Layer of the Internet Protocol Suite and has the task of delivering datagrams (packets) from the source host to the destination host solely based on their addresses.

Hint 36

Internet Protocol

Front 37

IPSec

Back 37

Internet Protocol Security

a suite of protocols for securing Internet Protocol (IP) communications by authenticating and encrypting each IP packet of a data stream. Operates at the Network Layer

Hint 37

Internet Protocol Security

Front 38

IPv4

Back 38

Internet Protocol version 4

these addresses exist in the numeric format of XXX.YYY.ZZZ.AAA. Each address consists of four 8-bit (32-bits total) fields separated by dots (.). This format of specifying addresses is called dotted decimal notation.

Hint 38

Internet Protocol version 4

Front 39

IPv6

Back 39

Internet Protocol version 6

supports 2x128 (about 3.4×10x38) addresses

Hint 39

Internet Protocol version 6

Front 40

IPX

Back 40

Inter network Packet Exchange

is the OSI-model Network layer protocol in the IPX/SPX protocol stack.

Hint 40

Inter network Packet Exchange

Front 41

IRC

Back 41

Internet Relay Chat

a form of real-time Internet chat or synchronous conferencing.

Hint 41

Internet Relay Chat

Front 42

ISDN

Back 42

Integrated Services Digital Network

The key feature of this is that it integrates speech and data on the same lines, adding features that were not available in the classic telephone system. There are several kinds of access interfaces to it defined: Basic Rate Interface (BRI), Primary Rate Interface (PRI) and Broadband-ISDN (B-ISDN).

Hint 42

Integrated Services Digital Network

Front 43

ISM

Back 43

Industrial, Scientific, and Medical

radio bands originally reserved internationally for the use of RF electromagnetic fields for industrial, scientific and medical purposes other than communications. In general, communications equipment must accept any interference generated by this equipment.

Hint 43

Industrial, Scientific, and Medical

Front 44

L2F

Back 44

Layer 2 Forwarding

a tunneling protocol developed by Cisco Systems, Inc. to establish Virtual Private Network connections over the Internet.

Hint 44

Layer 2 Forwarding

Front 45

L2TP

Back 45

Layer 2 Tunneling Protocol

a tunneling protocol used to support virtual private networks (VPNs). IPsec is often used to secure these packets by providing confidentiality, authentication and integrity.

Hint 45

Layer 2 Tunneling Protocol

Front 46

LC

Back 46

Local Connector

is a small form-factor (half size) SC connector developed by Lucent Technologies for use in telephone environments. provide higher connection densities than the SC connectors and are as easy to connect and disconnect as RJ-11

Hint 46

Local Connector

Front 47

LDAP

Back 47

Lightweight Directory Access Protocol

an application protocol for querying and modifying directory services running over TCP/IP. Its deployments today tend to use Domain name system (DNS) names for structuring the topmost levels of the hierarchy. Deeper inside the directory might appear entries representing people, organizational units, printers, documents, groups of people or anything else that represents a given tree entry (or multiple entries).

Hint 47

Lightweight Directory Access Protocol

Front 48

LLC

Back 48

Logical Link Control

provides multiplexing and flow control mechanisms that make it possible for several network protocols (IP, IPX) to coexist within a multipoint network and to be transported over the same network media.

Hint 48

Logical Link Control

Front 49

LPD

Back 49

Line Printer Daemon

a set of programs that provide printer spooling and network print server functionality for Unix-like systems. The most common implementation of it is the official BSD UNIX operating system

Hint 49

Line Printer Daemon

Front 50

MAU

Back 50

Multistation Access Unit

a device to attach multiple network stations in a star topology in a Token ring network, internally wired to connect the stations into a logical ring.

Hint 50

Multistation Access Unit

Front 51

MDI

Back 51

Media Dependent Interface

This connection requires an external crossover (either the cable or the other hub must perform the crossover function)

Hint 51

Media Dependent Interface

Front 52

MDIX

Back 52

Media Dependent Interface Crossover

This type of connection performs the crossover function. This allows a straight-through cable to be used to make the connection when engaged.

Hint 52

Media Dependent Interface Crossover

Front 53

MIB

Back 53

Management Information Base

a database of objects that can be monitored by a network mgmt system. SNMP devices stores data about themselves in these

Hint 53

Management Information Base

Front 54

MMF

Back 54

MultiMode Fiber

a network cable that has higher "light-gathering" capacity. In practical terms, the larger core size simplifies connections and also allows the use of lower-cost electronics such as light-emitting diodes (LEDs) and vertical-cavity surface-emitting lasers (VCSELs) which operate at the 850 nm wavelength (single-mode fibers used in telecommunications operate at 1310 or 1550 nm and require more expensive laser sources. these cables typically have orange jackets, while SM cable jackets are usually yellow.

Hint 54

MultiMode Fiber

Front 55

MT-RJ

Back 55

Mechanical Transfer-Registered Jack

small form-factor fiber-optic connector that resembles an RJ-45 connector. It was designed by AMP to provide an inexpensive, easy-to-implement fiber connection method. These smaller fiber connectors provide higher connection densities than the ST connectors and are as easy to connect and disconnect as RJ-45 connectors. In addition, they fit in conventional RJ-45 faceplates and patch panel openings

Hint 55

Mechanical Transfer-Registered Jack

Front 56

MX

Back 56

Mail Exchanger

in the context of the Domain Name System formally refers to an IP address assigned to a device hosting a mail server, and by extension also indicates the server itself.

Hint 56

Mail Exchanger

Front 57

NAT

Back 57

Network Address Translation

the process of modifying network address information in datagram packet headers while in transit across a traffic routing device for the purpose of remapping a given address space into another

Hint 57

Network Address Translation

Front 58

NCP

Back 58

NetWare Core Protocol

a NetWare network protocol used to access file, print, directory, clock synchronization, messaging, remote command execution and other network service functions.

Hint 58

NetWare Core Protocol

Front 59

NDS

Back 59

NetWare Directory Services

a NetWare directory service software product for centrally managing access to resources on multiple servers and computers within a given network.

Hint 59

NetWare Directory Services

Front 60

NFS

Back 60

Network File System

any computer file system that supports sharing of files, printers and other resources as persistent storage over a computer network.

Hint 60

Network File System

Front 61

NIS

Back 61

Network Information Service

developed by Sun Microsystems, it consists of a client-server directory service protocol for distributing system configuration data such as user and host names between computers on a computer network.

Hint 61

Network Information Service

Front 62

NLM

Back 62

NetWare Loadable Module

used to implement extensions to the core NetWare operating system. These extensions can be hardware drivers, server functions (for example, clustering), applications (for example, GroupWise), OS libraries (for example, CLIB.NLM) or utilities (for example, MONITOR.NLM).

Hint 62

NetWare Loadable Module

Front 63

NNTP

Back 63

Network News Transport Protocol

an Internet application protocol used primarily for reading and posting Usenet articles

Front 64

NTP

Back 64

Network Time Protocol

a protocol for synchronizing the clocks of computer systems over packet-switched, variable-latency data networks. Uses UDP port 123 as its transport layer.

Front 65

OSPF

Back 65

Open Shortest Path First

a dynamic routing protocol for use in Internet Protocol (IP) networks that detects changes in the topology, such as link failures, very quickly and converges on a new loop-free routing structure within seconds. uses link state routing (sends out their routing tables via multicast or unicast, not broadcast, and only when neccessary).

Front 66

OTDR

Back 66

Optical Time Domain Reflectometer

an optoelectronic instrument used for estimating the fiber's length and overall attenuation, including splice and mated-connector losses. It may also be used to locate faults, such as breaks, and to measure optical return loss.

Front 67

OU

Back 67

Organizational Unit

provides a way of classifying objects located in directories, or names in a digital certificate hierarchy, typically used either to differentiate between objects with the same name (John Doe in OU "marketing" versus John Doe in OU "customer service"), or to parcel out authority to create and manage objects (for example: to give rights for user-creation to local technicians instead of having to manage all accounts from a single central group).

Front 68

PAP

Back 68

Password Authentication Protocol

a simple authentication protocol used to authenticate a user to a network access server

Front 69

PDC

Back 69

Primary Domain Controller

a server computer in a pre-Windows 2000 NT server Domain. It has the master copy of the user accounts database which it can access and modify.

Front 70

POP3

Back 70

Post Office Protocol version 3

an application-layer Internet standard protocol used by local e-mail clients to retrieve e-mail from a remote server over a TCP/IP connection.

Front 71

PPP

Back 71

Point-to-Point Protocol

remote access protocol used to establish an internet connection between serial point-to-point links, replaced SLIP, more feature rich

Front 72

PPPoE

Back 72

Point-to-Point Protocol over Ethernet

remote access protocol that connects LAN to the internet using ADSL or cable modem

Front 73

PPTP

Back 73

Point-to-Point Tunneling Protocol

a method for implementing virtual private networks. It does not provide confidentiality or encryption. Made obsolete by L2TP.

Front 74

PRI

Back 74

Primary Rate Interface

avail in North America and Japan. getting 23 B (carries data) channels (64k each) and 1 D (control info) channel (64k) = 1.544 mbps = T1

Front 75

PVC

Back 75

Permanent Virtual Circuit

based on packet switching used in WANs that require a constant flow of data. PVCs decrease the bandwidth use that's associated with a permanent connection

Front 76

QoS

Back 76

Quality of Service

refers to resource reservation control mechanisms rather than the achieved service quality. It is the ability to provide different priority to different applications, users, or data flows, or to guarantee a certain level of performance to a data flow.

Front 77

RADIUS

Back 77

Remote Authentication Dial-In User Service

a service that provides centralized network authentication and accounting for multiple users. It's frequently used w/dial-up networking connections.

Front 78

RAS

Back 78

Remote Access Service

a Windows NT 4.0 service for remote networking. Predominately a Microsoft technology

Front 79

RDP

Back 79

Remote Desktop Protocol

allows you access to a GUI to the desktop on a server or workstation and run it locally on your machine as if it were actually your machine, runs on TCP port 3389, it's an open standard

Front 80

RSA

Back 80

Rivest, Shamir, Adelman

a popular public key algorithm. the key is created by choosing two large primary numbers and multiplying them together.

Front 81

S / MIME

Back 81

Secure Multipurpose Internet Mail Extensions

a standard for public key encryption and signing of e-mail encapsulated in MIME.

Front 82

SCP

Back 82

Secure Copy Protocol

an extension to OpenSSH (open source secure shell), it allows you to copy files from one host to another securely. It effectively replaces FTP

Front 83

SFTP

Back 83

Secure File Transfer Protocol

slightly different from SCP, used in conjunction with the proprietary SSH. It allows you to securely copy files

Front 84

SLIP

Back 84

Serial Line Internet Protocol

access remote networks using serial ports and modems, slower and less reliable, quickly replaced by PPP

Front 85

SMF

Back 85

Single Mode Fiber

fiber cable that does not exhibit modal dispersion resulting from multiple spatial modes. They are therefore better at retaining the fidelity of each light pulse over long distances. For these reasons, they can have a higher bandwidth.

Front 86

SNMP

Back 86

Simple Network Management Protocol

consists of a set of standards for network management, including an application layer protocol, a database schema, and a set of data objects.

Front 87

SONET

Back 87

Synchronous Optical Network

a high-bandwidth WAN technique, it can work w/different standards, uses a double-ring topology over fiber-optic cable, has OC throughput levels (OC1 - OC768)

Front 88

SSH

Back 88

Secure Shell

a network protocol that allows data to be exchanged using a secure channel between two networked devices. It was designed as a replacement for Telnet and other insecure remote shells.

Front 89

SSID

Back 89

Service Set Identifier

is a friendly name used to identify the particular 802.11 wireless LAN(s).

Front 90

T1

Back 90

T-Carrier Level 1

transmission rate of 1.544mbps = PRI. T3 = 45mbps

Front 91

UDP

Back 91

User Datagram Protocol

a connection-less transport protocol that is designed for speed but has no sequence checking, usually used for streaming video

Front 92

VPN

Back 92

Virtual Private Network

a logically constructed WAN that uses existing public transmission systems. They are created through the use of software and/or hardware. two popular VPN tunneling protocols are PPTP and L2TP

Front 93

Zeroconf

Back 93

Zero Configuration

a set of techniques that automatically creates a usable IP network without configuration or special servers.

Hint 93

Zero Configuration

Front 94

AAA

Back 94

Authentication, Authorization, Accounting

Front 95

AS

Back 95

Autonomous System

The largest and highest-leveladministrative uniton the Internet.

Hint 95

Autonomous System

Front 96

BSSID

Back 96

Basic service setIdentifier

In wireless networking,the 6-byte MACaddress of the basic serviceset. In an ad hocnetwork, the BSSID is a randomlygenerated number.u&

Hint 96

Basic service set Identifier

Front 97

BNC Connector

Back 97

British Naval Connectoror Bayonet Neill-Concelman

Hint 97

British Naval Connectoror Bayonet Neill-Concelman

Front 98

APIPA

Back 98

AutomaticPrivate Internet Protocol Addressing

Hint 98

Automatic Private Internet Protocol Addressing