Defined Acronyms

Question 1

DNS

Answer 1

Domain Name Servers - translates domain/ host names into IP addresses

Question 2

VLAN

Answer 2

Virtual Local Area Network- group of computers configured to communicate as if attached to same wire

Question 3

OSI

Answer 3

Open Systems Interconnection - model used to detail how applications/ computers communicate over a network

Question 4

DHCP

Answer 4

Dynamic Host Configuration Protocol - a server that automatically assigns IP addresses to computers from a defined range of numbers configured for a given network

Question 5

NIC

Answer 5

Network Interface Card - a circuit board or card that is installed in a computer so that it can be connected to a network

Question 6

LAN

Answer 6

Local Area Network - a computer network that interconnects computers within a limited area

Question 7

CSU/DSU

Answer 7

Channel Service Unit/ Data Service Unit - a digital interface device used to connect a data terminal equipment

Question 8

UTP

Answer 8

Unshielded Twisted Pair - twisted pair is the ordinary copper wire that connects home and many business computers to the telephone company

Question 9

APIPA

Answer 9

Automatic Private IP Addressing - enables a computer to automatically assign itself an IP address when there is no DHCP server available

Question 10

VPN

Answer 10

Virtual Private Network - a network that is constructed by using public wires to connect to a private network

Question 11

PPTP

Answer 11

Point-to-Point Tunneling Protocol - method for implementing VPNs

Question 12

IPSec

Answer 12

Internet Protocol Security - a protocol suite for securing IP communications by authenticating and encrypting each IP packet of communication sent

Question 13

ESP

Answer 13

Encapsulating Security Payload - member of the IPSec protocol suite

Question 14

L2TP

Answer 14

Layer 2 Tunneling Protocol - protocol used to support VPN

Question 15

DMZ

Answer 15

Demilitarized Zone - conceptual network design where publicly accessible servers are placed on a separate, isolated between segment

Question 16

CIDR

Answer 16

Classless Inter-Domain Routing - a way to allocate and specify the Internet addresses used in inter-domain routing

Question 17

HTTP

Answer 17

Hypertext Transfer Protocol - application protocol for disturbed, collaborative, hypermedia information systems

Question 18

RIP

Answer 18

Routing Information Protocol - managing router info within a self-contained network

Question 19

ICMP

Answer 19

Internet Control Message Protocol - used by network devices, like routers, to send error messages indicating that a requested service is not available

Question 20

ARP

Answer 20

Address Resolution Protocol - mapping an IP address to a physical machine address that is recognized in the local network

Question 21

FDDI

Answer 21

Fiber Distributed Data Interface - set of ANSI and ISO standards for data transmission on fiber optic lines in a LAN

Question 22

NIDS

Answer 22

Network Intrusion Detection System - method of security management for computers and networks

Question 23

CSMA/CD

Answer 23

Carrier Sense Multiple Access with Collision Detection - media access control method used most notably in a LANing using early Ethernet technology

Question 24

SA

Answer 24

Security Association - establishment of shared security attributes between two network entities to support secure communication

Question 25

WPA2

Answer 25

Wi-Fi Protected Access - security protocol and security certification program that secures wireless computer networks

Question 26

NAT

Answer 26

Network Address Translation - methodology of remapping one IP address space into another by modifying network address info in IP datagram packet headers while they are in transit across a traffic routing device